newsletter.pragmaticengineer.com Open in urlscan Pro
104.18.40.87 Public Scan

Go To Rescan
Add Verdict Report

Submitted URL:
http://newsletter.pragmaticengineer.com/
Effective URL:
https://newsletter.pragmaticengineer.com/
Submission: On November 01 via api (November 1st 2023, 3:53:42 pm UTC) from US — Scanned from DE

Summary HTTP 55 Redirects Links 12 Behaviour Indicators

Summary

This website contacted 12 IPs in 2 countries across 11 domains to perform 55 HTTP transactions. The main IP is 104.18.40.87, located in and belongs to CLOUDFLARENET, US. The main domain is newsletter.pragmaticengineer.com.
TLS certificate: Issued by Cloudflare Inc ECC CA-3 on June 25th 2023. Valid for: a year.

This is the only time newsletter.pragmaticengineer.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
1 7	104.18.40.87 104.18.40.87	13335 (CLOUDFLAR...) (CLOUDFLARENET)
25	18.244.155.41 18.244.155.41	16509 (AMAZON-02) (AMAZON-02)
2	151.101.194.217 151.101.194.217	54113 (FASTLY) (FASTLY)
2	104.16.57.101 104.16.57.101	13335 (CLOUDFLAR...) (CLOUDFLARENET)
1	142.250.185.195 142.250.185.195	15169 (GOOGLE) (GOOGLE)
2	18.172.158.35 18.172.158.35	16509 (AMAZON-02) (AMAZON-02)
4	172.64.154.11 172.64.154.11	13335 (CLOUDFLAR...) (CLOUDFLARENET)
3	142.250.185.136 142.250.185.136	15169 (GOOGLE) (GOOGLE)
4	104.16.56.101 104.16.56.101	13335 (CLOUDFLAR...) (CLOUDFLARENET)
2	142.250.186.130 142.250.186.130	15169 (GOOGLE) (GOOGLE)
2	142.250.184.196 142.250.184.196	15169 (GOOGLE) (GOOGLE)
2	172.217.18.3 172.217.18.3	15169 (GOOGLE) (GOOGLE)
55	12

7 104.18.40.87 (None, ) 1 redirects

ASN13335 (CLOUDFLARENET, US)

newsletter.pragmaticengineer.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

25 18.244.155.41 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-18-244-155-41.lhr50.r.cloudfront.net

substackcdn.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 151.101.194.217 (United States)

ASN54113 (FASTLY, US)

js.sentry-cdn.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 104.16.57.101 (None, )

ASN13335 (CLOUDFLARENET, US)

static.cloudflareinsights.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 142.250.185.195 (United States)

ASN15169 (GOOGLE, US)
PTR: fra16s52-in-f3.1e100.net

fonts.gstatic.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 18.172.158.35 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-18-172-158-35.lhr50.r.cloudfront.net

www.datadoghq-browser-agent.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

4 172.64.154.11 (United States)

ASN13335 (CLOUDFLARENET, US)

substack.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 142.250.185.136 (United States)

ASN15169 (GOOGLE, US)
PTR: fra16s50-in-f8.1e100.net

www.googletagmanager.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

4 104.16.56.101 (None, )

ASN13335 (CLOUDFLARENET, US)

cloudflareinsights.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 142.250.186.130 (United States)

ASN15169 (GOOGLE, US)
PTR: fra24s07-in-f2.1e100.net

googleads.g.doubleclick.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 142.250.184.196 (United States)

ASN15169 (GOOGLE, US)
PTR: fra24s11-in-f4.1e100.net

www.google.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 172.217.18.3 (United States)

ASN15169 (GOOGLE, US)
PTR: fra02s19-in-f3.1e100.net

www.google.de	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
25	substackcdn.com substackcdn.com — Cisco Umbrella Rank: 17917	1 MB
7	pragmaticengineer.com 1 redirects newsletter.pragmaticengineer.com	43 KB
6	cloudflareinsights.com static.cloudflareinsights.com — Cisco Umbrella Rank: 899 cloudflareinsights.com — Cisco Umbrella Rank: 881	14 KB
4	substack.com substack.com — Cisco Umbrella Rank: 17604	10 KB
3	googletagmanager.com www.googletagmanager.com — Cisco Umbrella Rank: 35	232 KB
2	google.de www.google.de — Cisco Umbrella Rank: 6862	563 B
2	google.com www.google.com — Cisco Umbrella Rank: 2	563 B
2	doubleclick.net googleads.g.doubleclick.net — Cisco Umbrella Rank: 33	3 KB
2	datadoghq-browser-agent.com www.datadoghq-browser-agent.com — Cisco Umbrella Rank: 1471	100 KB
2	sentry-cdn.com js.sentry-cdn.com — Cisco Umbrella Rank: 5817	3 KB
1	gstatic.com fonts.gstatic.com	36 KB
55	11

	Domain	Requested by
25	substackcdn.com	newsletter.pragmaticengineer.com substack.com
7	newsletter.pragmaticengineer.com	1 redirects newsletter.pragmaticengineer.com
4	cloudflareinsights.com	static.cloudflareinsights.com www.datadoghq-browser-agent.com
4	substack.com	substackcdn.com substack.com
3	www.googletagmanager.com	substackcdn.com www.googletagmanager.com
2	www.google.de
2	www.google.com
2	googleads.g.doubleclick.net	www.googletagmanager.com
2	www.datadoghq-browser-agent.com	newsletter.pragmaticengineer.com substack.com
2	static.cloudflareinsights.com	newsletter.pragmaticengineer.com substack.com
2	js.sentry-cdn.com	newsletter.pragmaticengineer.com substack.com
1	fonts.gstatic.com	newsletter.pragmaticengineer.com
55	12

This site contains links to these domains. Also see Links.

Domain
substack.com
www.lennysnewsletter.com
www.developing.dev
www.latent.space
www.bigtechnology.com
tidyfirst.substack.com

Subject Issuer	Validity	Valid
newsletter.pragmaticengineer.com Cloudflare Inc ECC CA-3	`2023-06-25` - `2024-06-24`	a year	crt.sh
substackcdn.com Amazon RSA 2048 M02	`2023-03-14` - `2024-04-12`	a year	crt.sh
*.sentry-cdn.com GlobalSign Atlas R3 DV TLS CA 2023 Q3	`2023-08-01` - `2024-09-01`	a year	crt.sh
sni.cloudflaressl.com Cloudflare Inc ECC CA-3	`2023-04-10` - `2024-04-09`	a year	crt.sh
*.gstatic.com GTS CA 1C3	`2023-10-16` - `2024-01-08`	3 months	crt.sh
*.datadoghq-browser-agent.com DigiCert TLS RSA SHA256 2020 CA1	`2023-01-14` - `2024-01-16`	a year	crt.sh
substack.com Cloudflare Inc ECC CA-3	`2023-09-13` - `2024-09-12`	a year	crt.sh
*.google-analytics.com GTS CA 1C3	`2023-10-16` - `2024-01-08`	3 months	crt.sh
*.g.doubleclick.net GTS CA 1C3	`2023-10-16` - `2024-01-08`	3 months	crt.sh
www.google.com GTS CA 1C3	`2023-10-16` - `2024-01-08`	3 months	crt.sh
www.google.de GTS CA 1C3	`2023-10-16` - `2024-01-08`	3 months	crt.sh

This page contains 3 frames:

Primary Page: https://newsletter.pragmaticengineer.com/
Frame ID: 4BF1B27A1E1E6C12964EBCB5BF6C719C
Requests: 37 HTTP requests in this frame

Frame: https://substack.com/channel-frame
Frame ID: 6AD0A0B90E1CAF16049FAFC56DBC805D
Requests: 1 HTTP requests in this frame

Frame: https://substack.com/channel-frame
Frame ID: 67CEDE44A9780B0AEA03DFCB21A66CE5
Requests: 15 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

The Pragmatic Engineer | Gergely Orosz | Substack

Page URL History Show full URLs

http://newsletter.pragmaticengineer.com/ HTTP 301
https://newsletter.pragmaticengineer.com/ Page URL

Detected technologies

Cloudflare Browser Insights (Analytics) Expand

Overall confidence: 100%
Detected patterns

static\.cloudflareinsights\.com/beacon(?:\.min)?\.js

Google Tag Manager (Tag Managers) Expand

Overall confidence: 100%
Detected patterns

googletagmanager\.com/gtag/js

Page Statistics

55
Requests

100 %
HTTPS

0 %
IPv6

11
Domains

12
Subdomains

12
IPs

2
Countries

1867 kB
Transfer

6822 kB
Size

12
Cookies

12 Outgoing links

These are links going to different origins than the main page.

URL: https://substack.com/@pragmaticengineer
Title: Gergely Orosz

Search URL Search Domain Scan URL

URL: https://www.lennysnewsletter.com/?utm_source=homepage_recommendations&utm_campaign=458709
Title: Lenny's NewsletterLenny Rachitsky

Search URL Search Domain Scan URL

URL: https://www.developing.dev/?utm_source=homepage_recommendations&utm_campaign=458709
Title: The Developing DevRyan Peterman

Search URL Search Domain Scan URL

URL: https://www.latent.space/?utm_source=homepage_recommendations&utm_campaign=458709
Title: Latent Spaceswyx

Search URL Search Domain Scan URL

URL: https://www.bigtechnology.com/?utm_source=homepage_recommendations&utm_campaign=458709
Title: Big TechnologyAlex Kantrowitz

Search URL Search Domain Scan URL

URL: https://tidyfirst.substack.com/?utm_source=homepage_recommendations&utm_campaign=458709
Title: SSoftware Design: Tidy First?Kent Beck

Search URL Search Domain Scan URL

URL: https://substack.com/tos
Title: Terms of Service

Search URL Search Domain Scan URL

URL: https://substack.com/privacy
Title: Privacy Policy

Search URL Search Domain Scan URL

URL: https://substack.com/ccpa#personal-data-collected
Title: Information Collection Notice

Search URL Search Domain Scan URL

URL: https://substack.com/signup?utm_source=substack&utm_medium=web&utm_content=footer
Title: Start Writing

Search URL Search Domain Scan URL

URL: https://substack.com/app/app-store-redirect?utm_campaign=app-marketing&utm_content=web-footer-button
Title: Get the app

Search URL Search Domain Scan URL

URL: https://substack.com/
Title: Substack

Search URL Search Domain Scan URL

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

http://newsletter.pragmaticengineer.com/ HTTP 301
https://newsletter.pragmaticengineer.com/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

55 HTTP transactions
0 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2

200

Primary Request / Show response
newsletter.pragmaticengineer.com/
Redirect Chain

http://newsletter.pragmaticengineer.com/
https://newsletter.pragmaticengineer.com/

419 KB
38 KB

483ms
135ms

Document
text/html

104.18.40.87
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.18.40.87 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

23f227ead9490402aa8ea03772e49ae09d2b1c28ba3841f4bc98321e6e7f8da9

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Frame-Options	sameorigin

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36
accept-language: de-DE,de;q=0.9

Response headers

alt-svc: h3=":443"; ma=86400
cache-control: no-cache
cf-cache-status: HIT
cf-ray: 81f54f3a0d4f5c74-FRA
content-encoding: br
content-type: text/html; charset=utf-8
date: Wed, 01 Nov 2023 15:53:14 GMT
etag: W/"68dc9-DaZI7KUminamICxgs8K5wEd7VWc"
link: <https://substackcdn.com>; rel=preconnect
server: cloudflare
strict-transport-security: max-age=31536000
vary: Accept-Encoding
x-cluster: substack
x-deploy: 4cce908996
x-frame-options: sameorigin
x-powered-by: Express
x-served-by: Substack
x-sub: pragmaticengineer

Redirect headers

CF-RAY: 81f54f37887f1c34-FRA
Connection: keep-alive
Content-Length: 0
Date: Wed, 01 Nov 2023 15:53:14 GMT
Location: https://newsletter.pragmaticengineer.com/
Server: cloudflare
Vary: Accept-Encoding
alt-svc: h3=":443"; ma=86400

GET
H2 200 main.9ff163c480234b5cbc14.css
substackcdn.com/bundle/theme/ 475 KB
58 KB 434ms
35ms Stylesheet
text/css 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/theme/main.9ff163c480234b5cbc14.css
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: AmazonS3 /
Resource Hash: 1bbc4230f4bec79eb50eefd3615425816f949681ddef51c47de4b2e92b7274ca

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 02:37:01 GMT
content-encoding: br
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 47775
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
x-amz-expiration: expiry-date="Thu, 25 Apr 2024 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Fri, 27 Oct 2023 23:02:58 GMT
server: AmazonS3
etag: W/"9ff163c480234b5cbc14422f02bbebea"
vary: Accept-Encoding
content-type: text/css
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: gq3k-7-HUEnQi9Wiz2jBYEgmUSxKgmaRXR6Efk7yZ6xRQ4mVNeXRbg==

GET
H2 200 main.6aa5b181f79fef537ab5.css
substackcdn.com/bundle/ 356 KB
50 KB 444ms
45ms Stylesheet
text/css 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/main.6aa5b181f79fef537ab5.css
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: AmazonS3 /
Resource Hash: 247b92164eea1c52d1f237f4da678002602630a32d6d761ba329ff39cd21b895

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Tue, 31 Oct 2023 17:59:20 GMT
content-encoding: gzip
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 78836
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
x-amz-expiration: expiry-date="Mon, 29 Apr 2024 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Tue, 31 Oct 2023 17:46:46 GMT
server: AmazonS3
etag: W/"368671450c11fd6661503b3eb4f49cbf"
vary: Accept-Encoding
content-type: text/css
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: Tl-GyM1R5MU2LL8u1rIqTg1hh7t0X3Nlz5-YcEoadsTevayAyTalHw==

GET
H2 200 https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F5ecbf7ac-260b-423b-8493-26783bf01f06_600x600.png
substackcdn.com/image/fetch/w_96,c_limit,f_auto,q_auto:good,fl_progressive:steep/ 2 KB
2 KB 460ms
62ms Image
image/png 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://substackcdn.com/image/fetch/w_96,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F5ecbf7ac-260b-423b-8493-26783bf01f06_600x600.png
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: imgproxy /
Resource Hash: bf812196f6f89c7171885b412253fa1f134603574c2fb6d1bc9e47f5a69233d4

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Tue, 29 Nov 2022 01:14:35 GMT
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
server: imgproxy
x-amz-cf-pop: LHR50-P8
age: 29169520
etag: "BFcyhJUgw6kDr9UPxBpSsKXSMElaOAVla8V55nXtu48/RIjFkYTczOTRiNzczMTY5YWRhZDlkMmU1OGQ3NWI1MTM5Ig"
x-cache: Hit from cloudfront
content-type: image/png
cache-control: public, max-age=31536000
content-disposition: inline; filename="5ecbf7ac-260b-423b-8493-26783bf01f06_600x600.png"
alt-svc: h3=":443"; ma=86400
content-length: 1537
x-amz-cf-id: LwReI-TV8fOIIhM992PL6FthtqDj1Zz-pMuRvbsEBMUry-ys_bOvCg==
x-request-id: _TJs89rDG6ODXN4IMzuQE

GET
H2 200 https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0f43fa96-50b7-492a-bf37-f571b0126a4f_1858x1160.png
substackcdn.com/image/fetch/w_848,h_565,c_fill,f_webp,q_auto:good,fl_progressive:steep,g_center/ 20 KB
20 KB 459ms
61ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://substackcdn.com/image/fetch/w_848,h_565,c_fill,f_webp,q_auto:good,fl_progressive:steep,g_center/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0f43fa96-50b7-492a-bf37-f571b0126a4f_1858x1160.png

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

18.244.155.41 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-244-155-41.lhr50.r.cloudfront.net

Software

imgproxy / Express

Resource Hash

bbfb10f21020ea3de27514c5199eec570e6ccba4d48cc0ace93b3b3501bcee49

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Sun, 15 Oct 2023 22:21:02 GMT
content-security-policy: script-src 'none'
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 1445532
x-powered-by: Express
x-cache: Hit from cloudfront
content-disposition: inline; filename="0f43fa96-50b7-492a-bf37-f571b0126a4f_1858x1160.webp"
alt-svc: h3=":443"; ma=86400
content-length: 20320
x-request-id: xA554ffNPpjrMzAh8P-my
server: imgproxy
etag: "wyQjTwQTUXkBnMU8wTOlWpu_yQXt1YOC0F8UiMKljrU/RIjBlZGNiMmM5MzMxZjNjNmM5ODYwNjk5MDM4N2Y3N2IwIg"
content-type: image/webp
cache-control: public, max-age=31536000
x-amz-cf-id: AluopjSXxg8wAoZCWNP7BMMl_2Q56Gm_GWmLkOgpP3_R5vZqKoj05w==

GET
H2 200 https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F5ecbf7ac-260b-423b-8493-26783bf01f06_600x600.png
substackcdn.com/image/fetch/w_88,c_limit,f_auto,q_auto:good,fl_progressive:steep/ 1 KB
2 KB 451ms
63ms Image
image/png 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://substackcdn.com/image/fetch/w_88,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F5ecbf7ac-260b-423b-8493-26783bf01f06_600x600.png
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: imgproxy /
Resource Hash: b0ba6f14e19efc06a8be91a16c0eeb4e121b909838f41be4921e55facb63d275

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 26 Apr 2023 15:53:06 GMT
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
server: imgproxy
x-amz-cf-pop: LHR50-P8
age: 16329609
etag: "KpEvGLcOf77HgKHSbtA4DR-5GlsPYs2nTXoNQFZEZZ4/RIjFkYTczOTRiNzczMTY5YWRhZDlkMmU1OGQ3NWI1MTM5Ig"
x-cache: Hit from cloudfront
content-type: image/png
cache-control: public, max-age=31536000
content-disposition: inline; filename="5ecbf7ac-260b-423b-8493-26783bf01f06_600x600.png"
alt-svc: h3=":443"; ma=86400
content-length: 1424
x-amz-cf-id: JgPaJQ-noRDyDOMcuhEUz_4W5CjodJD42d2mNbr7QT-MtFh_NbCf_A==
x-request-id: jnHZOhC6LALJqQ3BG2zYb

GET
H2 200 https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F5a9e5545-0407-4cd2-9fd1-cc2c3882fe59_1279x268.png
substackcdn.com/image/fetch/w_1360,c_limit,f_webp,q_auto:best,fl_progressive:steep/ 56 KB
57 KB 429ms
63ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://substackcdn.com/image/fetch/w_1360,c_limit,f_webp,q_auto:best,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F5a9e5545-0407-4cd2-9fd1-cc2c3882fe59_1279x268.png

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

18.244.155.41 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-244-155-41.lhr50.r.cloudfront.net

Software

imgproxy / Express

Resource Hash

dbcf4cd0063bc0d36290e835388e4747e498b5c32b28565908e1580fea3f0712

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 20 Sep 2023 11:22:22 GMT
content-security-policy: script-src 'none'
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 3645053
x-powered-by: Express
x-cache: Hit from cloudfront
content-disposition: inline; filename="5a9e5545-0407-4cd2-9fd1-cc2c3882fe59_1279x268.webp"
alt-svc: h3=":443"; ma=86400
content-length: 57624
x-request-id: e0DJcynxtrjbfewqCNFvQ
server: imgproxy
etag: "iWLEOGNAotTr_FUaiWo425O1NJlzfWt0WEaeu0x84jc/RIjM1ZGVhMGEyZTgwNzMyN2Y1ZWY5OTYyMzFiMTlkNjE3Ig"
content-type: image/webp
cache-control: public, max-age=31536000
x-amz-cf-id: YgSIOIMUIk2lLgeOdFVBzmP-TMM5UzUzpYXL4VPNx8uLZ3Jmqdb-sA==

GET
H2 200 6c2ff3e3828e4017b7faf7b63e24cdf8.min.js Show response
js.sentry-cdn.com/ 2 KB
2 KB 434ms
33ms Script
text/javascript 151.101.194.217
FASTLY

General

Check archive.org

Show headers Download Go to

Full URL

https://js.sentry-cdn.com/6c2ff3e3828e4017b7faf7b63e24cdf8.min.js

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.2, ECDHE_RSA, AES_128_GCM

Server

151.101.194.217 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

1ed42382c80c36c20d46d4d1a4f0dae562420acf881527033662bfdadd135d79

Security Headers

Name	Value
Content-Security-Policy	object-src 'self'; base-uri 'none'; script-src 'self' 'unsafe-inline' 'report-sample' 'unsafe-eval' s1.sentry-cdn.com js.sentry-cdn.com browser.sentry-cdn.com statuspage-production.s3.amazonaws.com static.zdassets.com aui-cdn.atlassian.com connect-cdn.atl-paas.net js.stripe.com ssl.google-analytics.com 'strict-dynamic' cdn.pendo.io data.pendo.io pendo-io-static.storage.googleapis.com pendo-static-5634074999128064.storage.googleapis.com; img-src * blob: data:; frame-ancestors 'self' .sentry.io; style-src 'unsafe-inline'; default-src ; connect-src ; font-src * data:; report-uri https://o1.ingest.sentry.io/api/54785/security/?sentry_key=f724a8a027db45f5b21507e7142ff78e&sentry_release=d990685b2e3a984258e3fb0fa0eb61e8a272f75d
Strict-Transport-Security	max-age=31536000; includeSubDomains
X-Content-Type-Options	nosniff
X-Frame-Options	deny
X-Xss-Protection	1; mode=block

Request headers

Referer: https://newsletter.pragmaticengineer.com/
Origin: https://newsletter.pragmaticengineer.com
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

content-security-policy: object-src 'self'; base-uri 'none'; script-src 'self' 'unsafe-inline' 'report-sample' 'unsafe-eval' s1.sentry-cdn.com js.sentry-cdn.com browser.sentry-cdn.com statuspage-production.s3.amazonaws.com static.zdassets.com aui-cdn.atlassian.com connect-cdn.atl-paas.net js.stripe.com ssl.google-analytics.com 'strict-dynamic' cdn.pendo.io data.pendo.io pendo-io-static.storage.googleapis.com pendo-static-5634074999128064.storage.googleapis.com; img-src * blob: data:; frame-ancestors 'self' *.sentry.io; style-src * 'unsafe-inline'; default-src *; connect-src *; font-src * data:; report-uri https://o1.ingest.sentry.io/api/54785/security/?sentry_key=f724a8a027db45f5b21507e7142ff78e&sentry_release=d990685b2e3a984258e3fb0fa0eb61e8a272f75d
content-encoding: gzip
x-content-type-options: nosniff
date: Wed, 01 Nov 2023 15:53:15 GMT
strict-transport-security: max-age=31536000; includeSubDomains
age: 26
x-envoy-upstream-service-time: 56
content-length: 1222
x-xss-protection: 1; mode=block
x-served-by: getsentry-web-default-common-production-5985c8b966-tbxzv, cache-chi-kigq8000087-CHI, cache-fra-eddf8230127-FRA
x-frame-options: deny
vary: Accept-Encoding
content-type: text/javascript
access-control-allow-origin: *
content-language: en
cache-control: public, max-age=3600, s-maxage=60, stale-while-revalidate=315360000, stale-if-error=315360000
x-envoy-attempt-count: 1
accept-ranges: bytes
timing-allow-origin: *

GET
H2 200 main.5613f6d521876acd3993.bundle.js Show response
substackcdn.com/bundle/ 4 MB
1 MB 39ms
38ms Script
application/javascript 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/main.5613f6d521876acd3993.bundle.js
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: AmazonS3 /
Resource Hash: 327b0f9fc02553d7a8e949e5c42ea250c9fcc9fd2bbe3fa2eb6cdae5f4997e66

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 13:41:01 GMT
content-encoding: br
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 7935
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
x-amz-expiration: expiry-date="Tue, 30 Apr 2024 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Wed, 01 Nov 2023 13:20:13 GMT
server: AmazonS3
etag: W/"696a628f9adffbcc15d48c3fb9bf2152"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: mL3MdkRgPVcws8NnuRq-254AB9GzR7uHsUmKh1tWtFMVzvQMcJuc0Q==

GET
H2 200 beacon.min.js Show response
static.cloudflareinsights.com/ 20 KB
7 KB 570ms
112ms Script
text/javascript 104.16.57.101
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://static.cloudflareinsights.com/beacon.min.js
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.16.57.101 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash: 6153d13804862b0fc1c016cf1129f34cb7c6185f2cf4bf1a3a862eecdab50101

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:15 GMT
content-encoding: gzip
last-modified: Tue, 10 Oct 2023 21:38:13 GMT
server: cloudflare
etag: W/"2023.10.0"
vary: Accept-Encoding
content-type: text/javascript;charset=UTF-8
access-control-allow-origin: *
cache-control: public, max-age=86400
cross-origin-resource-policy: cross-origin
cf-ray: 81f54f3eaf9191ea-FRA

GET
H2 200 0QIvMX1D_JOuMwr7I_FMl_E.woff2
fonts.gstatic.com/s/lora/v32/ 35 KB
36 KB 853ms
14ms Font
font/woff2 142.250.185.195
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/lora/v32/0QIvMX1D_JOuMwr7I_FMl_E.woff2

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.185.195 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra16s52-in-f3.1e100.net

Software

sffe /

Resource Hash

963ef2b3b0a8b5db60d69df5814239c385bc4e8e8781c6c24bc7390457e1e6dc

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Referer: https://newsletter.pragmaticengineer.com/
Origin: https://newsletter.pragmaticengineer.com
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Fri, 27 Oct 2023 23:33:16 GMT
x-content-type-options: nosniff
age: 404400
content-security-policy-report-only: require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 36036
x-xss-protection: 0
last-modified: Tue, 21 Feb 2023 21:46:02 GMT
server: sffe
cross-origin-opener-policy: same-origin; report-to="apps-themes"
report-to: {"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000
accept-ranges: bytes
timing-allow-origin: *
expires: Sat, 26 Oct 2024 23:33:16 GMT

GET
H2 200 https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F9289c14f-3445-4fbe-b65a-a74e9fccccf9_1658x1190.png
substackcdn.com/image/fetch/w_320,h_213,c_fill,f_webp,q_auto:good,fl_progressive:steep,g_center/ 5 KB
6 KB 28ms
28ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://substackcdn.com/image/fetch/w_320,h_213,c_fill,f_webp,q_auto:good,fl_progressive:steep,g_center/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F9289c14f-3445-4fbe-b65a-a74e9fccccf9_1658x1190.png

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

18.244.155.41 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-244-155-41.lhr50.r.cloudfront.net

Software

imgproxy / Express

Resource Hash

7b4fc261ed1452835c4cf6b42443120bfeaedb49564704fca5146c5edcd39af3

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Tue, 31 Oct 2023 18:59:12 GMT
content-security-policy: script-src 'none'
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 75243
x-powered-by: Express
x-cache: Hit from cloudfront
content-disposition: inline; filename="9289c14f-3445-4fbe-b65a-a74e9fccccf9_1658x1190.webp"
alt-svc: h3=":443"; ma=86400
content-length: 5476
x-request-id: xjFQ_qBXGB-dYcTCy6KAZ
server: imgproxy
etag: "7iB3qrOsRDoXXjCq3o1xIubbBpzlDrQjnfMSzCM-oCk/RImFlZTkyMWUzZTE4YTMwZTY1OGRmYTc0Y2Y1MDAzMTlmIg"
content-type: image/webp
cache-control: public, max-age=31536000
x-amz-cf-id: gOfCs6ztMDyFjc3O_T3xib6zsV8-o4355oLxfdHdtCQQjciL2O5vTw==

GET
H2 200 https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F01129bde-f856-4194-b7c3-ad99f6f2738e_420x300.png
substackcdn.com/image/fetch/w_320,h_213,c_fill,f_webp,q_auto:good,fl_progressive:steep,g_center/ 6 KB
7 KB 28ms
28ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

18.244.155.41 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-244-155-41.lhr50.r.cloudfront.net

Software

imgproxy / Express

Resource Hash

89a6445caf28f8d1d2a92221c2494e95bce338e7bb4691ea9a079e683dfa294c

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Thu, 26 Oct 2023 16:53:37 GMT
content-security-policy: script-src 'none'
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 514778
x-powered-by: Express
x-cache: Hit from cloudfront
content-disposition: inline; filename="01129bde-f856-4194-b7c3-ad99f6f2738e_420x300.webp"
alt-svc: h3=":443"; ma=86400
content-length: 6330
x-request-id: rUWVCDGJyaBdhbclRLXf6
server: imgproxy
etag: "7iB3qrOsRDoXXjCq3o1xIubbBpzlDrQjnfMSzCM-oCk/RImYxMjBhNDg1ZDkyMDFlODkyMmE1NzEzNzljZDdmYTA2Ig"
content-type: image/webp
cache-control: public, max-age=31536000
x-amz-cf-id: gZ5HXjzCMx0S7lAymF4EosicfONH4M2KQP--m76GCS9FHWkoNpQ5Ow==

GET
H2 200 https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F98dcf1cf-fe25-43d4-9cd8-62e2ad980aff_1588x1102.png
substackcdn.com/image/fetch/w_320,h_213,c_fill,f_webp,q_auto:good,fl_progressive:steep,g_center/ 8 KB
9 KB 27ms
27ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

18.244.155.41 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-244-155-41.lhr50.r.cloudfront.net

Software

imgproxy / Express

Resource Hash

9a32875ff4fdf59fe69d1ee0548348c36857ac20a7772addc2bd54dec702caa9

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Tue, 24 Oct 2023 15:58:04 GMT
content-security-policy: script-src 'none'
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 690910
x-powered-by: Express
x-cache: Hit from cloudfront
content-disposition: inline; filename="98dcf1cf-fe25-43d4-9cd8-62e2ad980aff_1588x1102.webp"
alt-svc: h3=":443"; ma=86400
content-length: 8388
x-request-id: mxnXJltLWq_s4X6xIfJOB
server: imgproxy
etag: "7iB3qrOsRDoXXjCq3o1xIubbBpzlDrQjnfMSzCM-oCk/RImVlMmZkYWQzOGZmYmNlODk5ZmEwM2M3NDhiNmZmOWIxIg"
content-type: image/webp
cache-control: public, max-age=31536000
x-amz-cf-id: egx3phj4cQGpHiiKQ19XBBYXBnA3ng75ub1qFyfkNu5Doi5Ai2gtlA==

GET
H2 200 https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fdc0cb490-b2e5-4d49-a554-4e0b90b34d97_420x300.png
substackcdn.com/image/fetch/w_320,h_213,c_fill,f_webp,q_auto:good,fl_progressive:steep,g_center/ 6 KB
7 KB 26ms
26ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

18.244.155.41 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-244-155-41.lhr50.r.cloudfront.net

Software

imgproxy / Express

Resource Hash

9e63e951341ee22323cc4ab9cc80ba638e17a94683c281b7cd35e8dfbef0392c

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Thu, 19 Oct 2023 16:07:15 GMT
content-security-policy: script-src 'none'
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 1122360
x-powered-by: Express
x-cache: Hit from cloudfront
content-disposition: inline; filename="dc0cb490-b2e5-4d49-a554-4e0b90b34d97_420x300.webp"
alt-svc: h3=":443"; ma=86400
content-length: 6384
x-request-id: Kd3eIdHakHfIjtz1bLLvo
server: imgproxy
etag: "7iB3qrOsRDoXXjCq3o1xIubbBpzlDrQjnfMSzCM-oCk/RIjQxNTg2M2U5Njk5M2I2YzVkM2U3YWIxNmY1NTMwYjZmIg"
content-type: image/webp
cache-control: public, max-age=31536000
x-amz-cf-id: OPbkNIz_HSsfJpJekCRmwynSjY5IM9AxEiRJWAcxwd2crbibCIo14w==

GET
H2 200 https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F340025d1-dbd3-4207-95d3-c38e05ced85e_1854x1352.png
substackcdn.com/image/fetch/w_320,h_213,c_fill,f_webp,q_auto:good,fl_progressive:steep,g_center/ 4 KB
5 KB 29ms
28ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

18.244.155.41 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-244-155-41.lhr50.r.cloudfront.net

Software

imgproxy / Express

Resource Hash

e204aa634388bfe43d643fceffee13da7e4897545042a29ad084d225216a656d

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Tue, 17 Oct 2023 16:07:23 GMT
content-security-policy: script-src 'none'
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 1295152
x-powered-by: Express
x-cache: Hit from cloudfront
content-disposition: inline; filename="340025d1-dbd3-4207-95d3-c38e05ced85e_1854x1352.webp"
alt-svc: h3=":443"; ma=86400
content-length: 4388
x-request-id: gSCZ2r0-jI8YWq52RSsUu
server: imgproxy
etag: "7iB3qrOsRDoXXjCq3o1xIubbBpzlDrQjnfMSzCM-oCk/RImM5NDU1NjNkNGZiNGIzYmQ4ZmYzYjhjOTlkZTZlNjc2Ig"
content-type: image/webp
cache-control: public, max-age=31536000
x-amz-cf-id: s3W3VfEQvO4o7zzNus0cuz5B6PA6j0r9y8nZ4bMkwgf10bCQ48wR7g==

GET
H2 200 https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F29694312-5340-4683-b0c6-ad404dd24e1c_420x300.png
substackcdn.com/image/fetch/w_320,h_213,c_fill,f_webp,q_auto:good,fl_progressive:steep,g_center/ 6 KB
7 KB 41ms
39ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

18.244.155.41 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-244-155-41.lhr50.r.cloudfront.net

Software

imgproxy / Express

Resource Hash

d6e77fcbe61c1cbb945dc6e8c8a817f78b80658f14e23bce9449308075c1316f

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Thu, 12 Oct 2023 15:51:19 GMT
content-security-policy: script-src 'none'
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 1728116
x-powered-by: Express
x-cache: Hit from cloudfront
content-disposition: inline; filename="29694312-5340-4683-b0c6-ad404dd24e1c_420x300.webp"
alt-svc: h3=":443"; ma=86400
content-length: 6336
x-request-id: 34xtLviUW3Uo54-v9FNrE
server: imgproxy
etag: "7iB3qrOsRDoXXjCq3o1xIubbBpzlDrQjnfMSzCM-oCk/RIjAzZWFjNDQyYjYwNjk5YWI3OWJhOTY5NDZmYWUyNzkxIg"
content-type: image/webp
cache-control: public, max-age=31536000
x-amz-cf-id: wi-Cu54JY8U4vJZ2fIJ6qeIRKvA-AWlgQxkHSTsKeQOJoUAGDpZMcg==

GET
H2 200 https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F1e3a48b6-e877-4397-858b-dcc7ad3d7af7_1424x1058.png
substackcdn.com/image/fetch/w_320,h_213,c_fill,f_webp,q_auto:good,fl_progressive:steep,g_center/ 3 KB
4 KB 41ms
40ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

18.244.155.41 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-244-155-41.lhr50.r.cloudfront.net

Software

imgproxy / Express

Resource Hash

7da97879e29e2b7c8dd2d704dc73400bb23f4f7c10698630b5221b31baaad387

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Tue, 10 Oct 2023 16:16:24 GMT
content-security-policy: script-src 'none'
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 1899411
x-powered-by: Express
x-cache: Hit from cloudfront
content-disposition: inline; filename="1e3a48b6-e877-4397-858b-dcc7ad3d7af7_1424x1058.webp"
alt-svc: h3=":443"; ma=86400
content-length: 3268
x-request-id: rtvixrU5jovkcsSB0kSTO
server: imgproxy
etag: "7iB3qrOsRDoXXjCq3o1xIubbBpzlDrQjnfMSzCM-oCk/RImFhNTAyM2Y3NzQ1MTY2NGNlODNmZjI1Y2I5ZmY0NzQ1Ig"
content-type: image/webp
cache-control: public, max-age=31536000
x-amz-cf-id: _G78Ot6mFQ1lLMMkqQlNuj5gkUGqYSIn_NO5vossig-u1uPsG-WmLw==

GET
H2 200 https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F40b73d36-7447-4f52-83b5-4bbf44b9324a_1200x1200.png
substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/ 3 KB
4 KB 42ms
40ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F40b73d36-7447-4f52-83b5-4bbf44b9324a_1200x1200.png
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: imgproxy /
Resource Hash: e52b8f8400b3bebb00e493735d5ef57864391dea779b56fa5e7695e588c6c212

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Tue, 29 Nov 2022 01:12:59 GMT
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
server: imgproxy
x-amz-cf-pop: LHR50-P8
age: 29169616
etag: "fNAPfeGAhIe4WLxyNIUHx9uquBlcI_-jpAHHyDUPgw0/RIjJiY2QxNTMxZTZhYTU1NjUwNmQ3NmE4YThiZGRiZjUyIg"
x-cache: Hit from cloudfront
content-type: image/webp
cache-control: public, max-age=31536000
content-disposition: inline; filename="40b73d36-7447-4f52-83b5-4bbf44b9324a_1200x1200.webp"
alt-svc: h3=":443"; ma=86400
content-length: 3190
x-amz-cf-id: d3p3GCI463U5up70XDyd2Mr6u6plROJHpqNaYEXetdVj3frJrhqSmw==
x-request-id: C9-VhW-YehrRIGjq8y4j-

GET
H2 200 https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ffb980aa1-65a4-4e90-aacb-fc07a563b5f7_500x500.png
substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/ 672 B
1 KB 45ms
44ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ffb980aa1-65a4-4e90-aacb-fc07a563b5f7_500x500.png
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: imgproxy /
Resource Hash: 01073d81fa5b4170f4ce1e451e0b4e12a5dbdd62ba4ae21c43dde2ef2f2e3db4

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Mon, 20 Mar 2023 18:40:17 GMT
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
server: imgproxy
x-amz-cf-pop: LHR50-P8
age: 19516378
etag: "fNAPfeGAhIe4WLxyNIUHx9uquBlcI_-jpAHHyDUPgw0/RIjhmZjczYWE4NTcxZjJmODRmZmE1N2JlMjU3NDcxZWQwIg"
x-cache: Hit from cloudfront
content-type: image/webp
cache-control: public, max-age=31536000
content-disposition: inline; filename="fb980aa1-65a4-4e90-aacb-fc07a563b5f7_500x500.webp"
alt-svc: h3=":443"; ma=86400
content-length: 672
x-amz-cf-id: KvgCAeJ2Sj7lzdgfCLwxKbK9sdOdLavHhza5B3I15zIXMHl5mxa-kQ==
x-request-id: jNPDTn3L1siPADGS3rzwf

GET
H2 200 https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F22fff541-7037-4d24-8a42-c53bad8ddf76_1280x1280.png
substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/ 3 KB
3 KB 44ms
43ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F22fff541-7037-4d24-8a42-c53bad8ddf76_1280x1280.png
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: imgproxy /
Resource Hash: 8d77c9b1cda8cefbee334fb224bfb4b3169828979c971689b35d2b21a04d4c2d

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Mon, 01 May 2023 16:41:23 GMT
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
server: imgproxy
x-amz-cf-pop: LHR50-P8
age: 15894712
etag: "fNAPfeGAhIe4WLxyNIUHx9uquBlcI_-jpAHHyDUPgw0/RIjgyMDAzZDNjNDAzZjA3NTUxZWIwY2I4ZGJjZmZhYmE3Ig"
x-cache: Hit from cloudfront
content-type: image/webp
cache-control: public, max-age=31536000
content-disposition: inline; filename="22fff541-7037-4d24-8a42-c53bad8ddf76_1280x1280.webp"
alt-svc: h3=":443"; ma=86400
content-length: 2804
x-amz-cf-id: IbUu50X_LGdLvhOSRVAnDtPEY37dOctsBiuJm1ShGipf_ljUhm7ozQ==
x-request-id: yag9ZFy3FhFWsjilMgGQH

GET
H2 200 https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F0aa684da-9913-4b0c-80fd-c0c24912931b_1280x1280.png
substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/ 1 KB
2 KB 43ms
43ms Image
image/webp 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F0aa684da-9913-4b0c-80fd-c0c24912931b_1280x1280.png
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: imgproxy /
Resource Hash: dd52be221000316e5f3c2e2ec4b8496758fc69b993ac7b17922d86a0a33d914e

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Tue, 29 Nov 2022 01:24:57 GMT
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
server: imgproxy
x-amz-cf-pop: LHR50-P8
age: 29168898
etag: "fNAPfeGAhIe4WLxyNIUHx9uquBlcI_-jpAHHyDUPgw0/RIjQ3MWU4YzE4NDE4NmMyMGQ4MWU5ODgzODU3NmI5ZjQ4Ig"
x-cache: Hit from cloudfront
content-type: image/webp
cache-control: public, max-age=31536000
content-disposition: inline; filename="0aa684da-9913-4b0c-80fd-c0c24912931b_1280x1280.webp"
alt-svc: h3=":443"; ma=86400
content-length: 1310
x-amz-cf-id: S_6daamNMe5qBPLPPBn70pKpSce-6u4gV-K1TpZHSr-JcehimOPw7w==
x-request-id: 3xkxjjteWqytu2jxiIbJN

GET
H2 200 datadog-rum-v4.js Show response
www.datadoghq-browser-agent.com/ 150 KB
50 KB 566ms
28ms Script
application/javascript 18.172.158.35
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://www.datadoghq-browser-agent.com/datadog-rum-v4.js
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.172.158.35 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-172-158-35.lhr50.r.cloudfront.net
Software: AmazonS3 /
Resource Hash: cd5eb76033d96219a0c4fe45fb0df10202e1febcb4d086fb1305f1b3304a6b1a

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:52:42 GMT
content-encoding: gzip
via: 1.1 e0f7b9809801dee6376c04a94d95b8f8.cloudfront.net (CloudFront)
last-modified: Mon, 09 Oct 2023 11:26:13 GMT
server: AmazonS3
x-amz-cf-pop: LHR50-P5
age: 35
x-amz-server-side-encryption: AES256
etag: W/"2630b3d7ad4a41fac67742216e506d83"
vary: Accept-Encoding
x-cache: Hit from cloudfront
content-type: application/javascript
cache-control: max-age=14400, s-maxage=60
timing-allow-origin: *
x-amz-cf-id: oar1OZDYGE-fIram0JP4BBjpBXuuwpDJsspfA0scqfT31XYUev1KUg==

GET
H2 200 channel-frame
substack.com/ Frame 6AD0 0
0 634ms
154ms Document
text/html 172.64.154.11
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://substack.com/channel-frame

Requested by

Host: substackcdn.com
URL: https://substackcdn.com/bundle/main.5613f6d521876acd3993.bundle.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.64.154.11 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000

Request headers

Referer: https://newsletter.pragmaticengineer.com/
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36
accept-language: de-DE,de;q=0.9

Response headers

alt-svc: h3=":443"; ma=86400
cache-control: no-cache
cf-cache-status: DYNAMIC
cf-ray: 81f54f50a9119025-FRA
content-encoding: br
content-type: text/html; charset=utf-8
date: Wed, 01 Nov 2023 15:53:18 GMT
etag: W/"65ef-ghAjOUYvDztkoOElIfquZITRK/I"
server: cloudflare
strict-transport-security: max-age=31536000
vary: Accept-Encoding
x-cluster: substack
x-deploy: 69e5cde166
x-powered-by: Express
x-served-by: Substack

GET
H2 200 channel-frame Show response
substack.com/ Frame 67CE 25 KB
8 KB 173ms
138ms Document
text/html 172.64.154.11
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://substack.com/channel-frame

Requested by

Host: substackcdn.com
URL: https://substackcdn.com/bundle/main.5613f6d521876acd3993.bundle.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.64.154.11 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

0bb51480960e0316d5f3219a17f021483ef52b859ae7999ad79ee0400d9e216e

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000

Request headers

Referer: https://newsletter.pragmaticengineer.com/
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36
accept-language: de-DE,de;q=0.9

Response headers

alt-svc: h3=":443"; ma=86400
cache-control: no-cache
cf-cache-status: DYNAMIC
cf-ray: 81f54f58b94a9025-FRA
content-encoding: br
content-type: text/html; charset=utf-8
date: Wed, 01 Nov 2023 15:53:19 GMT
etag: W/"65f1-i9xFOyoM02KJEgvgsRqctXkfwsw"
server: cloudflare
strict-transport-security: max-age=31536000
vary: Accept-Encoding
x-cluster: substack
x-deploy: 69e5cde166
x-powered-by: Express
x-served-by: Substack

GET
H2 200 firehose
newsletter.pragmaticengineer.com/api/v1/ 35 B
991 B 129ms
129ms Image
image/gif 104.18.40.87
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://newsletter.pragmaticengineer.com/api/v1/firehose?_=1698853997096&d=eyJldmVudCI6IlBhZ2VzIiwicHJvcGVydGllcyI6eyJicm93c2VyU2Vzc2lvbklkIjoiYjNndGpkbXh3MWMiLCJpZnJhbWVWaXNpdElkIjpmYWxzZX0sImNvbnRleHQiOnsiY2xpZW50X3R5cGUiOiJ3ZWIiLCJkaXNwbGF5TW9kZSI6ImJyb3dzZXIiLCJwYWdlIjp7InJlZmVycmVyIjoiIiwidGl0bGUiOiJUaGUgUHJhZ21hdGljIEVuZ2luZWVyIHwgR2VyZ2VseSBPcm9zeiB8IFN1YnN0YWNrIiwidXJsIjoiaHR0cHM6Ly9uZXdzbGV0dGVyLnByYWdtYXRpY2VuZ2luZWVyLmNvbS8ifSwiY2FtcGFpZ24iOnt9fX0%3D

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.18.40.87 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:19 GMT
x-cluster: substack
cf-cache-status: DYNAMIC
server: cloudflare
strict-transport-security: max-age=31536000
x-powered-by: Express
vary: Accept-Encoding
content-type: image/gif
x-deploy: 69e5cde166
cache-control: no-cache
cf-ray: 81f54f555c205c74-FRA
alt-svc: h3=":443"; ma=86400
x-served-by: Substack

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F40b73d36-7447-4f52-83b5-4bbf44b9324a_1200x1200.png
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: imgproxy /
Resource Hash: e52b8f8400b3bebb00e493735d5ef57864391dea779b56fa5e7695e588c6c212

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Tue, 29 Nov 2022 01:12:59 GMT
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
server: imgproxy
x-amz-cf-pop: LHR50-P8
age: 29169619
etag: "fNAPfeGAhIe4WLxyNIUHx9uquBlcI_-jpAHHyDUPgw0/RIjJiY2QxNTMxZTZhYTU1NjUwNmQ3NmE4YThiZGRiZjUyIg"
x-cache: Hit from cloudfront
content-type: image/webp
cache-control: public, max-age=31536000
content-disposition: inline; filename="40b73d36-7447-4f52-83b5-4bbf44b9324a_1200x1200.webp"
alt-svc: h3=":443"; ma=86400
content-length: 3190
x-amz-cf-id: YQADhC99krK3jXLZrEss7uEzrr1_Wy39SdAEIzlzLrg2ztixtVpERQ==
x-request-id: C9-VhW-YehrRIGjq8y4j-

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ffb980aa1-65a4-4e90-aacb-fc07a563b5f7_500x500.png
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: imgproxy /
Resource Hash: 01073d81fa5b4170f4ce1e451e0b4e12a5dbdd62ba4ae21c43dde2ef2f2e3db4

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Mon, 20 Mar 2023 18:40:17 GMT
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
server: imgproxy
x-amz-cf-pop: LHR50-P8
age: 19516381
etag: "fNAPfeGAhIe4WLxyNIUHx9uquBlcI_-jpAHHyDUPgw0/RIjhmZjczYWE4NTcxZjJmODRmZmE1N2JlMjU3NDcxZWQwIg"
x-cache: Hit from cloudfront
content-type: image/webp
cache-control: public, max-age=31536000
content-disposition: inline; filename="fb980aa1-65a4-4e90-aacb-fc07a563b5f7_500x500.webp"
alt-svc: h3=":443"; ma=86400
content-length: 672
x-amz-cf-id: 9a7yyvF6zd1iPbKMoSP9DUvt_P33mPScMQ-BYFrUlyxk4Sa0mDNHMw==
x-request-id: jNPDTn3L1siPADGS3rzwf

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F22fff541-7037-4d24-8a42-c53bad8ddf76_1280x1280.png

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

18.244.155.41 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-244-155-41.lhr50.r.cloudfront.net

Software

imgproxy / Express

Resource Hash

8d77c9b1cda8cefbee334fb224bfb4b3169828979c971689b35d2b21a04d4c2d

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Fri, 22 Sep 2023 17:26:58 GMT
content-security-policy: script-src 'none'
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 3450380
x-powered-by: Express
x-cache: Hit from cloudfront
content-disposition: inline; filename="22fff541-7037-4d24-8a42-c53bad8ddf76_1280x1280.webp"
alt-svc: h3=":443"; ma=86400
content-length: 2804
x-request-id: Yim092hkQQ8TrzdpqsUvw
server: imgproxy
etag: "fNAPfeGAhIe4WLxyNIUHx9uquBlcI_-jpAHHyDUPgw0/RIjgyMDAzZDNjNDAzZjA3NTUxZWIwY2I4ZGJjZmZhYmE3Ig"
content-type: image/webp
cache-control: public, max-age=31536000
x-amz-cf-id: gEEzCjbraza9CfPvrguVnAmrZv9OLaCM3tolqcIH4iTFR2eAGDBu9g==

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://substackcdn.com/image/fetch/w_80,h_80,c_fill,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F0aa684da-9913-4b0c-80fd-c0c24912931b_1280x1280.png
Requested by: Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: imgproxy /
Resource Hash: dd52be221000316e5f3c2e2ec4b8496758fc69b993ac7b17922d86a0a33d914e

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Tue, 29 Nov 2022 01:24:57 GMT
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
server: imgproxy
x-amz-cf-pop: LHR50-P8
age: 29168901
etag: "fNAPfeGAhIe4WLxyNIUHx9uquBlcI_-jpAHHyDUPgw0/RIjQ3MWU4YzE4NDE4NmMyMGQ4MWU5ODgzODU3NmI5ZjQ4Ig"
x-cache: Hit from cloudfront
content-type: image/webp
cache-control: public, max-age=31536000
content-disposition: inline; filename="0aa684da-9913-4b0c-80fd-c0c24912931b_1280x1280.webp"
alt-svc: h3=":443"; ma=86400
content-length: 1310
x-amz-cf-id: h_4Mq_mOXirQLJb_cOibkjrJ3ZIBMa3Rbl_h0dI3xyj6w6tn9Q7WUg==
x-request-id: 3xkxjjteWqytu2jxiIbJN

GET
H2 200 firehose
newsletter.pragmaticengineer.com/api/v1/ 35 B
947 B 136ms
135ms Image
image/gif 104.18.40.87
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://newsletter.pragmaticengineer.com/api/v1/firehose?_=1698853999300&d=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

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.18.40.87 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:19 GMT
x-cluster: substack
cf-cache-status: DYNAMIC
server: cloudflare
strict-transport-security: max-age=31536000
x-powered-by: Express
vary: Accept-Encoding
content-type: image/gif
x-deploy: 69e5cde166
cache-control: no-cache
cf-ray: 81f54f57be0f5c74-FRA
alt-svc: h3=":443"; ma=86400
x-served-by: Substack

GET
H2 200 firehose
newsletter.pragmaticengineer.com/api/v1/ 35 B
568 B 136ms
136ms Image
image/gif 104.18.40.87
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://newsletter.pragmaticengineer.com/api/v1/firehose?_=1698853999300&d=eyJldmVudCI6IkZ1bGwgRW1haWwgRm9ybSBTaG93biIsInByb3BlcnRpZXMiOnsiYnJvd3NlclNlc3Npb25JZCI6ImIzZ3RqZG14dzFjIiwiaWZyYW1lVmlzaXRJZCI6ZmFsc2UsInNvdXJjZSI6ImNvdmVyX3BhZ2UiLCJmdW5jdGlvbmFsX3ZlcnNpb24iOnRydWV9LCJjb250ZXh0Ijp7ImNsaWVudF90eXBlIjoid2ViIiwiZGlzcGxheU1vZGUiOiJicm93c2VyIiwicGFnZSI6eyJyZWZlcnJlciI6IiIsInRpdGxlIjoiVGhlIFByYWdtYXRpYyBFbmdpbmVlciB8IEdlcmdlbHkgT3Jvc3ogfCBTdWJzdGFjayIsInVybCI6Imh0dHBzOi8vbmV3c2xldHRlci5wcmFnbWF0aWNlbmdpbmVlci5jb20vIn0sImNhbXBhaWduIjp7fX19

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.18.40.87 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:19 GMT
x-cluster: substack
cf-cache-status: DYNAMIC
server: cloudflare
strict-transport-security: max-age=31536000
x-powered-by: Express
vary: Accept-Encoding
content-type: image/gif
x-deploy: 69e5cde166
cache-control: no-cache
cf-ray: 81f54f57be105c74-FRA
alt-svc: h3=":443"; ma=86400
x-served-by: Substack

GET
H2 200 firehose
newsletter.pragmaticengineer.com/api/v1/ 35 B
520 B 145ms
145ms Image
image/gif 104.18.40.87
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://newsletter.pragmaticengineer.com/api/v1/firehose?_=1698853999302&d=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%3D

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.18.40.87 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:19 GMT
x-cluster: substack
cf-cache-status: DYNAMIC
server: cloudflare
strict-transport-security: max-age=31536000
x-powered-by: Express
vary: Accept-Encoding
content-type: image/gif
x-deploy: 69e5cde166
cache-control: no-cache
cf-ray: 81f54f57be125c74-FRA
alt-svc: h3=":443"; ma=86400
x-served-by: Substack

GET
H2 200 channelFrame.d41d8cd98f00b204e980.css
substackcdn.com/bundle/theme/ Frame 67CE 0
471 B 55ms
54ms Stylesheet
text/css 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/theme/channelFrame.d41d8cd98f00b204e980.css
Requested by: Host: substack.com
URL: https://substack.com/channel-frame
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: AmazonS3 /
Resource Hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 04:59:17 GMT
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 39243
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
content-length: 0
x-amz-expiration: expiry-date="Tue, 30 Apr 2024 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Wed, 01 Nov 2023 01:56:48 GMT
server: AmazonS3
etag: "d41d8cd98f00b204e9800998ecf8427e"
content-type: text/css
cache-control: public, max-age=31536000, immutable
accept-ranges: bytes
x-amz-cf-id: 6waKfCe3tnD2Fgqnxta6Plc4UNgs6_qsZPSxJfmDQraYgUTo369K-A==

GET
H2 200 channelFrame.c660662fde39b4671c64.css
substackcdn.com/bundle/ Frame 67CE 14 KB
3 KB 57ms
56ms Stylesheet
text/css 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/channelFrame.c660662fde39b4671c64.css
Requested by: Host: substack.com
URL: https://substack.com/channel-frame
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: AmazonS3 /
Resource Hash: 6e63b2a0b2c6578f2994354df47785e8cfeaf3d1335d38989c532d1afcbe6eee

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 07:52:59 GMT
content-encoding: gzip
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 28823
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
x-amz-expiration: expiry-date="Thu, 25 Apr 2024 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Fri, 27 Oct 2023 23:02:58 GMT
server: AmazonS3
etag: W/"a2d84bc6baed836048d978c0d1c24629"
vary: Accept-Encoding
content-type: text/css
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: gYzoBMawF5vesS7dtu5MlzYF2tDpZE7GDK8G3WOe1oLzXvzciP5FTg==

GET
H2 200 6c2ff3e3828e4017b7faf7b63e24cdf8.min.js Show response
js.sentry-cdn.com/ Frame 67CE 2 KB
1 KB 53ms
52ms Script
text/javascript 151.101.194.217
FASTLY

General

Check archive.org

Show headers Download Go to

Full URL

https://js.sentry-cdn.com/6c2ff3e3828e4017b7faf7b63e24cdf8.min.js

Requested by

Host: substack.com
URL: https://substack.com/channel-frame

Protocol

Security

TLS 1.2, ECDHE_RSA, AES_128_GCM

Server

151.101.194.217 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

1ed42382c80c36c20d46d4d1a4f0dae562420acf881527033662bfdadd135d79

Security Headers

Name	Value
Content-Security-Policy	object-src 'self'; base-uri 'none'; script-src 'self' 'unsafe-inline' 'report-sample' 'unsafe-eval' s1.sentry-cdn.com js.sentry-cdn.com browser.sentry-cdn.com statuspage-production.s3.amazonaws.com static.zdassets.com aui-cdn.atlassian.com connect-cdn.atl-paas.net js.stripe.com ssl.google-analytics.com 'strict-dynamic' cdn.pendo.io data.pendo.io pendo-io-static.storage.googleapis.com pendo-static-5634074999128064.storage.googleapis.com; img-src * blob: data:; frame-ancestors 'self' .sentry.io; style-src 'unsafe-inline'; default-src ; connect-src ; font-src * data:; report-uri https://o1.ingest.sentry.io/api/54785/security/?sentry_key=f724a8a027db45f5b21507e7142ff78e&sentry_release=d990685b2e3a984258e3fb0fa0eb61e8a272f75d
Strict-Transport-Security	max-age=31536000; includeSubDomains
X-Content-Type-Options	nosniff
X-Frame-Options	deny
X-Xss-Protection	1; mode=block

Request headers

Referer: https://substack.com/
Origin: https://substack.com
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

content-security-policy: object-src 'self'; base-uri 'none'; script-src 'self' 'unsafe-inline' 'report-sample' 'unsafe-eval' s1.sentry-cdn.com js.sentry-cdn.com browser.sentry-cdn.com statuspage-production.s3.amazonaws.com static.zdassets.com aui-cdn.atlassian.com connect-cdn.atl-paas.net js.stripe.com ssl.google-analytics.com 'strict-dynamic' cdn.pendo.io data.pendo.io pendo-io-static.storage.googleapis.com pendo-static-5634074999128064.storage.googleapis.com; img-src * blob: data:; frame-ancestors 'self' *.sentry.io; style-src * 'unsafe-inline'; default-src *; connect-src *; font-src * data:; report-uri https://o1.ingest.sentry.io/api/54785/security/?sentry_key=f724a8a027db45f5b21507e7142ff78e&sentry_release=d990685b2e3a984258e3fb0fa0eb61e8a272f75d
content-encoding: gzip
x-content-type-options: nosniff
date: Wed, 01 Nov 2023 15:53:19 GMT
strict-transport-security: max-age=31536000; includeSubDomains
age: 30
x-envoy-upstream-service-time: 56
content-length: 1222
x-xss-protection: 1; mode=block
x-served-by: getsentry-web-default-common-production-5985c8b966-tbxzv, cache-chi-kigq8000087-CHI, cache-fra-eddf8230127-FRA
x-frame-options: deny
vary: Accept-Encoding
content-type: text/javascript
access-control-allow-origin: *
content-language: en
cache-control: public, max-age=3600, s-maxage=60, stale-while-revalidate=315360000, stale-if-error=315360000
x-envoy-attempt-count: 1
accept-ranges: bytes
timing-allow-origin: *

GET
H2 200 channelFrame.a47b9b1c9c81d552399e.bundle.js Show response
substackcdn.com/bundle/ Frame 67CE 337 KB
103 KB 52ms
52ms Script
application/javascript 18.244.155.41
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/channelFrame.a47b9b1c9c81d552399e.bundle.js
Requested by: Host: substack.com
URL: https://substack.com/channel-frame
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.244.155.41 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-244-155-41.lhr50.r.cloudfront.net
Software: AmazonS3 /
Resource Hash: f369089dc0a5c9a72309c13c5c605e1dd16dafaa047f36cf04dca3820ecc1607

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:38:36 GMT
content-encoding: br
via: 1.1 550a2e33920b164c7fc3dddc1871c3ba.cloudfront.net (CloudFront)
x-amz-cf-pop: LHR50-P8
age: 884
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
x-amz-expiration: expiry-date="Tue, 30 Apr 2024 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Wed, 01 Nov 2023 15:21:18 GMT
server: AmazonS3
etag: W/"39ea71ab51872886a7f01c2d668a67c5"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: kUApVSIqB37xEkKGilBGA_SxAflJJzcJIrhSSFTAWH13x-4Pd5X-Og==

GET
H2 200 beacon.min.js Show response
static.cloudflareinsights.com/ Frame 67CE 20 KB
7 KB 86ms
86ms Script
text/javascript 104.16.57.101
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://static.cloudflareinsights.com/beacon.min.js
Requested by: Host: substack.com
URL: https://substack.com/channel-frame
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.16.57.101 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash: 6153d13804862b0fc1c016cf1129f34cb7c6185f2cf4bf1a3a862eecdab50101

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:19 GMT
content-encoding: gzip
last-modified: Tue, 10 Oct 2023 21:38:13 GMT
server: cloudflare
etag: W/"2023.10.0"
vary: Accept-Encoding
content-type: text/javascript;charset=UTF-8
access-control-allow-origin: *
cache-control: public, max-age=86400
cross-origin-resource-policy: cross-origin
cf-ray: 81f54f59e96f91ea-FRA

GET
H2 200 datadog-rum-v4.js Show response
www.datadoghq-browser-agent.com/ Frame 67CE 150 KB
50 KB 32ms
17ms Script
application/javascript 18.172.158.35
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://www.datadoghq-browser-agent.com/datadog-rum-v4.js
Requested by: Host: substack.com
URL: https://substack.com/channel-frame
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.172.158.35 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-172-158-35.lhr50.r.cloudfront.net
Software: AmazonS3 /
Resource Hash: cd5eb76033d96219a0c4fe45fb0df10202e1febcb4d086fb1305f1b3304a6b1a

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:52:42 GMT
content-encoding: gzip
via: 1.1 e0f7b9809801dee6376c04a94d95b8f8.cloudfront.net (CloudFront)
last-modified: Mon, 09 Oct 2023 11:26:13 GMT
server: AmazonS3
x-amz-cf-pop: LHR50-P5
age: 38
x-amz-server-side-encryption: AES256
etag: W/"2630b3d7ad4a41fac67742216e506d83"
vary: Accept-Encoding
x-cache: Hit from cloudfront
content-type: application/javascript
cache-control: max-age=14400, s-maxage=60
timing-allow-origin: *
x-amz-cf-id: FdVJfIE29iRddB-1G4p3iIcGR0BR2PrMXhWdRAWaTeUueVYzS9IILw==

GET
H2 200 firehose
substack.com/api/v1/ Frame 67CE 35 B
1015 B 133ms
133ms Image
image/gif 172.64.154.11
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://substack.com/api/v1/firehose?_=1698854000216&d=eyJldmVudCI6IlBhZ2VzIiwicHJvcGVydGllcyI6eyJicm93c2VyU2Vzc2lvbklkIjoiZGR1b3R4d2lwdjgiLCJpZnJhbWVWaXNpdElkIjp7ImlkIjoiZTJkZDViMGUtNDZkNS00ZjEzLWE1YWMtYmJhYmI2NDM1NjFkIiwidGltZXN0YW1wIjoiMjAyMy0xMS0wMVQxNTo1MzoyMC4xNThaIn19LCJjb250ZXh0Ijp7ImNsaWVudF90eXBlIjoid2ViIiwiZGlzcGxheU1vZGUiOiJicm93c2VyIiwicGFnZSI6eyJyZWZlcnJlciI6Imh0dHBzOi8vbmV3c2xldHRlci5wcmFnbWF0aWNlbmdpbmVlci5jb20vIiwidGl0bGUiOiIiLCJ1cmwiOiJodHRwczovL3N1YnN0YWNrLmNvbS9jaGFubmVsLWZyYW1lIn0sImNhbXBhaWduIjp7fX19

Requested by

Host: substack.com
URL: https://substack.com/channel-frame

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.64.154.11 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/channel-frame
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:20 GMT
x-cluster: substack
cf-cache-status: DYNAMIC
server: cloudflare
strict-transport-security: max-age=31536000
x-powered-by: Express
vary: Accept-Encoding
content-type: image/gif
x-deploy: 69e5cde166
cache-control: no-cache
cf-ray: 81f54f5dbcdd9025-FRA
alt-svc: h3=":443"; ma=86400
x-served-by: Substack

GET
H2 200 firehose
substack.com/api/v1/ Frame 67CE 35 B
979 B 134ms
133ms Image
image/gif 172.64.154.11
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://substack.com/api/v1/firehose?_=1698854000272&d=eyJldmVudCI6IkZyYW1lIE1lc3NhZ2UgU2VudCIsInByb3BlcnRpZXMiOnsiYnJvd3NlclNlc3Npb25JZCI6ImRkdW90eHdpcHY4IiwiaWZyYW1lVmlzaXRJZCI6eyJpZCI6ImUyZGQ1YjBlLTQ2ZDUtNGYxMy1hNWFjLWJiYWJiNjQzNTYxZCIsInRpbWVzdGFtcCI6IjIwMjMtMTEtMDFUMTU6NTM6MjAuMTU4WiJ9LCJoYXNVc2VyU3RhdGUiOmZhbHNlfSwiY29udGV4dCI6eyJjbGllbnRfdHlwZSI6IndlYiIsImRpc3BsYXlNb2RlIjoiYnJvd3NlciIsInBhZ2UiOnsicmVmZXJyZXIiOiJodHRwczovL25ld3NsZXR0ZXIucHJhZ21hdGljZW5naW5lZXIuY29tLyIsInRpdGxlIjoiIiwidXJsIjoiaHR0cHM6Ly9zdWJzdGFjay5jb20vY2hhbm5lbC1mcmFtZSJ9LCJjYW1wYWlnbiI6e319fQ%3D%3D

Requested by

Host: substack.com
URL: https://substack.com/channel-frame

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.64.154.11 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/channel-frame
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:20 GMT
x-cluster: substack
cf-cache-status: DYNAMIC
server: cloudflare
strict-transport-security: max-age=31536000
x-powered-by: Express
vary: Accept-Encoding
content-type: image/gif
x-deploy: 69e5cde166
cache-control: no-cache
cf-ray: 81f54f5dbce79025-FRA
alt-svc: h3=":443"; ma=86400
x-served-by: Substack

GET
H2 200 firehose
newsletter.pragmaticengineer.com/api/v1/ 35 B
1011 B 159ms
158ms Image
image/gif 104.18.40.87
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://newsletter.pragmaticengineer.com/api/v1/firehose?_=1698854000285&d=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%3D%3D

Requested by

Host: newsletter.pragmaticengineer.com
URL: https://newsletter.pragmaticengineer.com/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.18.40.87 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:20 GMT
x-cluster: substack
cf-cache-status: DYNAMIC
server: cloudflare
strict-transport-security: max-age=31536000
x-powered-by: Express
vary: Accept-Encoding
content-type: image/gif
x-deploy: 69e5cde166
cache-control: no-cache
cf-ray: 81f54f5dcb265c74-FRA
alt-svc: h3=":443"; ma=86400
x-served-by: Substack

GET
H2 200 js Show response
www.googletagmanager.com/gtag/ Frame 67CE 257 KB
87 KB 393ms
60ms Script
application/javascript 142.250.185.136
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.googletagmanager.com/gtag/js?id=G-TLW0DF6G5V&l=localGaDataLayer

Requested by

Host: substackcdn.com
URL: https://substackcdn.com/bundle/channelFrame.a47b9b1c9c81d552399e.bundle.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.185.136 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra16s50-in-f8.1e100.net

Software

Google Tag Manager /

Resource Hash

944ecfd51eb5c4f723016392a26df439065d5b13e562a91bbc296b48df2f05c6

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:20 GMT
content-encoding: br
strict-transport-security: max-age=31536000; includeSubDomains
server: Google Tag Manager
vary: Accept-Encoding
content-type: application/javascript; charset=UTF-8
access-control-allow-origin: *
cache-control: private, max-age=900
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
access-control-allow-headers: Cache-Control
content-length: 89079
x-xss-protection: 0
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires: Wed, 01 Nov 2023 15:53:20 GMT

POST
H2 204 rum Show response
cloudflareinsights.com/cdn-cgi/ Frame 67CE 0
37 B 132ms
51ms XHR
text/plain 104.16.56.101
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cloudflareinsights.com/cdn-cgi/rum

Requested by

Host: static.cloudflareinsights.com
URL: https://static.cloudflareinsights.com/beacon.min.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.16.56.101 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

Referer: https://substack.com/
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36
content-type: application/json

Response headers

date: Wed, 01 Nov 2023 15:53:21 GMT
x-content-type-options: nosniff
server: cloudflare
vary: Origin
access-control-max-age: 86400
access-control-allow-methods: POST,OPTIONS
access-control-allow-origin: https://substack.com
x-frame-options: DENY
access-control-allow-credentials: true
cf-ray: 81f54f62585865af-FRA

OPTIONS
H2 200 rum
cloudflareinsights.com/cdn-cgi/ Frame 0
0 440ms
68ms Preflight
text/plain 104.16.56.101
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cloudflareinsights.com/cdn-cgi/rum

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.16.56.101 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

Accept: */*
Access-Control-Request-Headers: content-type
Access-Control-Request-Method: POST
Origin: https://substack.com
Sec-Fetch-Mode: cors
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

access-control-allow-credentials: true
access-control-allow-headers: Content-Type
access-control-allow-methods: POST,OPTIONS
access-control-allow-origin: https://substack.com
access-control-max-age: 86400
cf-ray: 81f54f613f4965af-FRA
content-encoding: gzip
content-type: text/plain
date: Wed, 01 Nov 2023 15:53:20 GMT
server: cloudflare
vary: Origin
x-content-type-options: nosniff
x-frame-options: DENY

GET
H2 200 js Show response
www.googletagmanager.com/gtag/ 198 KB
72 KB 304ms
33ms Script
application/javascript 142.250.185.136
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.googletagmanager.com/gtag/js?id=AW-316245675&l=localGaDataLayer

Requested by

Host: substackcdn.com
URL: https://substackcdn.com/bundle/main.5613f6d521876acd3993.bundle.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.185.136 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra16s50-in-f8.1e100.net

Software

Google Tag Manager /

Resource Hash

5348dbd16eb5dc3fe24018adbdce13a0ecc63c4cb3a71acfa3ea88263b58245a

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:20 GMT
content-encoding: br
strict-transport-security: max-age=31536000; includeSubDomains
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 73664
x-xss-protection: 0
last-modified: Wed, 01 Nov 2023 15:00:00 GMT
server: Google Tag Manager
vary: Accept-Encoding
content-type: application/javascript; charset=UTF-8
access-control-allow-origin: *
cache-control: private, max-age=900
access-control-allow-credentials: true
access-control-allow-headers: Cache-Control
expires: Wed, 01 Nov 2023 15:53:20 GMT

POST
H2 204 rum Show response
cloudflareinsights.com/cdn-cgi/ 0
60 B 130ms
49ms XHR
text/plain 104.16.56.101
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cloudflareinsights.com/cdn-cgi/rum

Requested by

Host: www.datadoghq-browser-agent.com
URL: https://www.datadoghq-browser-agent.com/datadog-rum-v4.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.16.56.101 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

Referer: https://newsletter.pragmaticengineer.com/
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36
content-type: application/json

Response headers

date: Wed, 01 Nov 2023 15:53:21 GMT
x-content-type-options: nosniff
server: cloudflare
vary: Origin
access-control-max-age: 86400
access-control-allow-methods: POST,OPTIONS
access-control-allow-origin: https://newsletter.pragmaticengineer.com
x-frame-options: DENY
access-control-allow-credentials: true
cf-ray: 81f54f62585665af-FRA

OPTIONS
H2 200 rum
cloudflareinsights.com/cdn-cgi/ Frame 0
0 262ms
64ms Preflight
text/plain 104.16.56.101
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cloudflareinsights.com/cdn-cgi/rum

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.16.56.101 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

Accept: */*
Access-Control-Request-Headers: content-type
Access-Control-Request-Method: POST
Origin: https://newsletter.pragmaticengineer.com
Sec-Fetch-Mode: cors
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

access-control-allow-credentials: true
access-control-allow-headers: Content-Type
access-control-allow-methods: POST,OPTIONS
access-control-allow-origin: https://newsletter.pragmaticengineer.com
access-control-max-age: 86400
cf-ray: 81f54f613f4b65af-FRA
content-encoding: gzip
content-type: text/plain
date: Wed, 01 Nov 2023 15:53:20 GMT
server: cloudflare
vary: Origin
x-content-type-options: nosniff
x-frame-options: DENY

GET
H2 200 / Show response
googleads.g.doubleclick.net/pagead/viewthroughconversion/316245675/ 3 KB
2 KB 544ms
24ms Script
text/javascript 142.250.186.130
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://googleads.g.doubleclick.net/pagead/viewthroughconversion/316245675/?random=1698854000901&cv=11&fst=1698854000901&bg=ffffff&guid=ON&async=1&gtm=45be3au1v887153041&gcd=11l1l1l1l1&u_w=1600&u_h=1200&url=https%3A%2F%2Fnewsletter.pragmaticengineer.com%2F&hn=www.googleadservices.com&frm=0&tiba=The%20Pragmatic%20Engineer%20%7C%20Gergely%20Orosz%20%7C%20Substack&auid=1592812402.1698854001&uamb=0&uaw=0&data=event%3Dgtag.config&rfmt=3&fmt=4

Requested by

Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=AW-316245675&l=localGaDataLayer

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.186.130 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra24s07-in-f2.1e100.net

Software

cafe /

Resource Hash

8f7c7f0754b82de32cfc345e4d63c877c89824b379fb2bdf84f39aeb6fc00d87

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

pragma: no-cache
date: Wed, 01 Nov 2023 15:53:21 GMT
content-encoding: br
x-content-type-options: nosniff
server: cafe
content-type: text/javascript; charset=UTF-8
p3p: policyref="https://googleads.g.doubleclick.net/pagead/gcn_p3p_.xml", CP="CURa ADMa DEVa TAIo PSAo PSDo OUR IND UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"
cache-control: no-cache, must-revalidate
cross-origin-resource-policy: cross-origin
content-disposition: attachment; filename="f.txt"
timing-allow-origin: *
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 1357
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H2 200 js Show response
www.googletagmanager.com/gtag/ Frame 67CE 198 KB
72 KB 44ms
36ms Script
application/javascript 142.250.185.136
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.googletagmanager.com/gtag/js?id=AW-316245675&l=localGaDataLayer&cx=c

Requested by

Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=G-TLW0DF6G5V&l=localGaDataLayer

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.185.136 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra16s50-in-f8.1e100.net

Software

Google Tag Manager /

Resource Hash

5b9380518c7902d892c0f2835f8e7ef73647b549f98918ddfb6bce4816a48c30

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

date: Wed, 01 Nov 2023 15:53:21 GMT
content-encoding: br
strict-transport-security: max-age=31536000; includeSubDomains
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 73668
x-xss-protection: 0
last-modified: Wed, 01 Nov 2023 15:00:00 GMT
server: Google Tag Manager
vary: Accept-Encoding
content-type: application/javascript; charset=UTF-8
access-control-allow-origin: *
cache-control: private, max-age=900
access-control-allow-credentials: true
access-control-allow-headers: Cache-Control
expires: Wed, 01 Nov 2023 15:53:21 GMT

GET
H2 200 / Show response
googleads.g.doubleclick.net/pagead/viewthroughconversion/316245675/ Frame 67CE 3 KB
2 KB 31ms
29ms Script
text/javascript 142.250.186.130
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://googleads.g.doubleclick.net/pagead/viewthroughconversion/316245675/?random=1698854001565&cv=11&fst=1698854001565&bg=ffffff&guid=ON&async=1&gtm=45be3au1v887153041&gcd=11l1l1l1l1&u_w=1600&u_h=1200&url=https%3A%2F%2Fsubstack.com%2Fchannel-frame&ref=https%3A%2F%2Fnewsletter.pragmaticengineer.com%2F&top=https%3A%2F%2Fnewsletter.pragmaticengineer.com%2F&hn=www.googleadservices.com&frm=2&uamb=0&uaw=0&data=event%3Dgtag.config&rfmt=3&fmt=4

Requested by

Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=AW-316245675&l=localGaDataLayer&cx=c

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.186.130 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra24s07-in-f2.1e100.net

Software

cafe /

Resource Hash

620cc80b0b920b3005fdada046eba41267c0dea5b516dbc8761d25f1fe6c5859

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

pragma: no-cache
date: Wed, 01 Nov 2023 15:53:21 GMT
content-encoding: br
x-content-type-options: nosniff
server: cafe
content-type: text/javascript; charset=UTF-8
p3p: policyref="https://googleads.g.doubleclick.net/pagead/gcn_p3p_.xml", CP="CURa ADMa DEVa TAIo PSAo PSDo OUR IND UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"
cache-control: no-cache, must-revalidate
cross-origin-resource-policy: cross-origin
content-disposition: attachment; filename="f.txt"
timing-allow-origin: *
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 1328
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H2 200 /
www.google.com/pagead/1p-user-list/316245675/ 42 B
455 B 358ms
21ms Image
image/gif 142.250.184.196
GOOGLE

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.google.com/pagead/1p-user-list/316245675/?random=1698854000901&cv=11&fst=1698850800000&bg=ffffff&guid=ON&async=1&gtm=45be3au1v887153041&u_w=1600&u_h=1200&url=https%3A%2F%2Fnewsletter.pragmaticengineer.com%2F&frm=0&tiba=The%20Pragmatic%20Engineer%20%7C%20Gergely%20Orosz%20%7C%20Substack&data=event%3Dgtag.config&fmt=3&is_vtc=1&random=3650765166&rmt_tld=0&ipr=y

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.184.196 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra24s11-in-f4.1e100.net

Software

cafe /

Resource Hash

ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'; object-src 'none'
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

pragma: no-cache
date: Wed, 01 Nov 2023 15:53:22 GMT
content-security-policy: script-src 'none'; object-src 'none'
x-content-type-options: nosniff
server: cafe
content-type: image/gif
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cache-control: no-cache, no-store, must-revalidate
cross-origin-resource-policy: cross-origin
timing-allow-origin: *
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 42
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H2 200 /
www.google.de/pagead/1p-user-list/316245675/ 42 B
108 B 392ms
31ms Image
image/gif 172.217.18.3
GOOGLE

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.google.de/pagead/1p-user-list/316245675/?random=1698854000901&cv=11&fst=1698850800000&bg=ffffff&guid=ON&async=1&gtm=45be3au1v887153041&u_w=1600&u_h=1200&url=https%3A%2F%2Fnewsletter.pragmaticengineer.com%2F&frm=0&tiba=The%20Pragmatic%20Engineer%20%7C%20Gergely%20Orosz%20%7C%20Substack&data=event%3Dgtag.config&fmt=3&is_vtc=1&random=3650765166&rmt_tld=1&ipr=y

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.217.18.3 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra02s19-in-f3.1e100.net

Software

cafe /

Resource Hash

ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'; object-src 'none'
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://newsletter.pragmaticengineer.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

pragma: no-cache
date: Wed, 01 Nov 2023 15:53:22 GMT
content-security-policy: script-src 'none'; object-src 'none'
x-content-type-options: nosniff
server: cafe
content-type: image/gif
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cache-control: no-cache, no-store, must-revalidate
cross-origin-resource-policy: cross-origin
timing-allow-origin: *
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 42
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H2 200 /
www.google.com/pagead/1p-user-list/316245675/ Frame 67CE 42 B
108 B 340ms
23ms Image
image/gif 142.250.184.196
GOOGLE

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.google.com/pagead/1p-user-list/316245675/?random=1698854001565&cv=11&fst=1698850800000&bg=ffffff&guid=ON&async=1&gtm=45be3au1v887153041&u_w=1600&u_h=1200&url=https%3A%2F%2Fsubstack.com%2Fchannel-frame&ref=https%3A%2F%2Fnewsletter.pragmaticengineer.com%2F&frm=2&data=event%3Dgtag.config&fmt=3&is_vtc=1&random=1682459412&rmt_tld=0&ipr=y

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.184.196 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra24s11-in-f4.1e100.net

Software

cafe /

Resource Hash

ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'; object-src 'none'
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

pragma: no-cache
date: Wed, 01 Nov 2023 15:53:22 GMT
content-security-policy: script-src 'none'; object-src 'none'
x-content-type-options: nosniff
server: cafe
content-type: image/gif
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cache-control: no-cache, no-store, must-revalidate
cross-origin-resource-policy: cross-origin
timing-allow-origin: *
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 42
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H2 200 /
www.google.de/pagead/1p-user-list/316245675/ Frame 67CE 42 B
455 B 371ms
27ms Image
image/gif 172.217.18.3
GOOGLE

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.google.de/pagead/1p-user-list/316245675/?random=1698854001565&cv=11&fst=1698850800000&bg=ffffff&guid=ON&async=1&gtm=45be3au1v887153041&u_w=1600&u_h=1200&url=https%3A%2F%2Fsubstack.com%2Fchannel-frame&ref=https%3A%2F%2Fnewsletter.pragmaticengineer.com%2F&frm=2&data=event%3Dgtag.config&fmt=3&is_vtc=1&random=1682459412&rmt_tld=1&ipr=y

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.217.18.3 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra02s19-in-f3.1e100.net

Software

cafe /

Resource Hash

ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'; object-src 'none'
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://substack.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.105 Safari/537.36

Response headers

pragma: no-cache
date: Wed, 01 Nov 2023 15:53:22 GMT
content-security-policy: script-src 'none'; object-src 'none'
x-content-type-options: nosniff
server: cafe
content-type: image/gif
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cache-control: no-cache, no-store, must-revalidate
cross-origin-resource-policy: cross-origin
timing-allow-origin: *
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 42
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

Verdicts & Comments Add Verdict or Comment

18 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

12 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

Domain/Path	Expires	Name / Value
.newsletter.pragmaticengineer.com/	1970-01-20 15:54:15	Name: __cf_bm Value: 5S0Dbnpdtl30JfAih50toWLf7iuEVW7PNjCndw3vL9w-1698853994-0-ASi/HUNjDY2OcU/v2VFtI1bXMI1tLrD7ixvoFgif7Jx1VdNmLeKLdCWDfJtfeQylONJMEOmQGM1vQM93GaHsq6Q=
newsletter.pragmaticengineer.com/	1970-01-21 00:39:49	Name: ajs_anonymous_id Value: %22718bedef-3940-4472-b02e-05d7adb8deb2%22
.substack.com/	1970-01-20 15:54:15	Name: __cf_bm Value: IcPi_HFuq1ASslvUP_PR8sV8z7sFPiikHWQE1Az92RE-1698853998-0-AUIQLlYNXTEpzVGruhrEfLY7m6eAF4GAtf7xD5oqC+v4hZI/Qp46lKbBRV4higxZj5vZuPASujeJLWOThTW0gBM=
.newsletter.pragmaticengineer.com/	1970-01-21 00:39:50	Name: ajs_anonymous_id Value: %22718bedef-3940-4472-b02e-05d7adb8deb2%22
.newsletter.pragmaticengineer.com/	1970-01-20 15:54:15	Name: visit_id Value: %7B%22id%22%3A%2235de4ad3-90f0-4c00-b473-72cb85f822a9%22%2C%22timestamp%22%3A%222023-11-01T15%3A53%3A18.997Z%22%7D
.newsletter.pragmaticengineer.com/	1970-01-21 00:39:50	Name: ab_testing_id Value: %224a4cd472-349f-4e0e-8e65-2b0c052d89af%22
substack.com/	1970-01-20 16:04:18	Name: AWSALBTGCORS Value: xpumE+LKcpKQjFIVZTWJwWBIVVzwZt+wVZS72N68If+HMO54LoidxoQ5oYyUBkeGX5sRvsKXcOLyzRctw7701nALdVe2l1N1IzXo1gfMlnBRD6a75wkzhAth6QuKhted6ZcYt9PBxO7A25GxnXWLN0grS5zgweHzZS/66CCHF5Hw
newsletter.pragmaticengineer.com/	1970-01-20 16:04:18	Name: AWSALBTG Value: 7+BeTLSpAfuO4qVH+I3ubx7cfnkkE1UN1QKUFdlI6aaQH2komrgeaiWi6TnbmSy9ZQH9f8GCLl4+4OST/HVtBmWRMkzA/XW6fJo0bnt4fkQisWvBbJ6NkAEIW8KpQbeFFU0ic6fvGGi02RfCjAQzfiKBZaDOrV1sWnUjUYaEPNKq
newsletter.pragmaticengineer.com/	1970-01-20 16:04:18	Name: AWSALBTGCORS Value: 7+BeTLSpAfuO4qVH+I3ubx7cfnkkE1UN1QKUFdlI6aaQH2komrgeaiWi6TnbmSy9ZQH9f8GCLl4+4OST/HVtBmWRMkzA/XW6fJo0bnt4fkQisWvBbJ6NkAEIW8KpQbeFFU0ic6fvGGi02RfCjAQzfiKBZaDOrV1sWnUjUYaEPNKq
.pragmaticengineer.com/	1970-01-20 18:03:50	Name: _gcl_au Value: 1.1.1592812402.1698854001
.doubleclick.net/	1970-01-21 01:15:50	Name: IDE Value: AHWqTUldbTPcvqxvQZ7KTEHLzFHAsSUytoRzzP7m6FiVg_gxv1T5lIo_phtnCmdT
newsletter.pragmaticengineer.com/	1970-01-20 15:54:14	Name: _dd_s Value: rum=0&expire=1698854899325

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header	Value
Strict-Transport-Security	max-age=31536000
X-Frame-Options	sameorigin

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

cloudflareinsights.com
fonts.gstatic.com
googleads.g.doubleclick.net
js.sentry-cdn.com
newsletter.pragmaticengineer.com
static.cloudflareinsights.com
substack.com
substackcdn.com
www.datadoghq-browser-agent.com
www.google.com
www.google.de
www.googletagmanager.com
104.16.56.101
104.16.57.101
104.18.40.87
142.250.184.196
142.250.185.136
142.250.185.195
142.250.186.130
151.101.194.217
172.217.18.3
172.64.154.11
18.172.158.35
18.244.155.41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newsletter.pragmaticengineer.com Open in urlscan Pro 104.18.40.87 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Page URL History Show full URLs

Detected technologies

Page Statistics

55 Requests

100 %HTTPS

0 %IPv6

11 Domains

12 Subdomains

12 IPs

2 Countries

1867 kBTransfer

6822 kBSize

12 Cookies

12 Outgoing links

Page URL History

Redirected requests

55 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

Request headers

Response headers

Redirect headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

newsletter.pragmaticengineer.com Open in urlscan Pro
104.18.40.87 Public Scan

Screenshot
Live screenshot

Full Image

55
Requests

100 %
HTTPS

0 %
IPv6

11
Domains

12
Subdomains

12
IPs

2
Countries

1867 kB
Transfer

6822 kB
Size

12
Cookies

55 HTTP transactions
0 data transactions