fs.blog Open in urlscan Pro
2606:4700:3108::ac42:28e7 Public Scan

Go To Rescan
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URL:
https://fs.blog/first-principles/
Submission: On May 10 via manual (May 10th 2024, 8:56:12 pm UTC) from TH — Scanned from DE

Summary HTTP 101 Redirects Links 14 Behaviour Indicators

Summary

This website contacted 21 IPs in 3 countries across 17 domains to perform 101 HTTP transactions. The main IP is 2606:4700:3108::ac42:28e7, located in United States and belongs to CLOUDFLARENET, US. The main domain is fs.blog. The Cisco Umbrella rank of the primary domain is 468834.
TLS certificate: Issued by E1 on March 16th 2024. Valid for: 3 months.

This is the only time fs.blog was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
10	2606:4700:310... 2606:4700:3108::ac42:28e7	13335 (CLOUDFLAR...) (CLOUDFLARENET)
33	192.0.77.39 192.0.77.39	2635 (AUTOMATTIC) (AUTOMATTIC)
3	2a00:1450:400... 2a00:1450:4001:82f::2008	15169 (GOOGLE) (GOOGLE)
7	2a02:26f0:350... 2a02:26f0:3500:16::215:1485	20940 (AKAMAI-ASN1) (AKAMAI-ASN1)
2	2606:4700::68... 2606:4700::6811:bb70	13335 (CLOUDFLAR...) (CLOUDFLARENET)
1	23.56.201.9 23.56.201.9	16625 (AKAMAI-AS) (AKAMAI-AS)
19	2400:52e0:1e0... 2400:52e0:1e00::1079:1	200325 (BUNNYCDN) (BUNNYCDN)
4	192.0.76.3 192.0.76.3	2635 (AUTOMATTIC) (AUTOMATTIC)
1	2606:4700::68... 2606:4700::6810:5417	13335 (CLOUDFLAR...) (CLOUDFLARENET)
1	2a02:26f0:350... 2a02:26f0:3500:16::215:148b	20940 (AKAMAI-ASN1) (AKAMAI-ASN1)
1	2606:4700:310... 2606:4700:3108::ac42:2908	13335 (CLOUDFLAR...) (CLOUDFLARENET)
2	2a00:1450:400... 2a00:1450:4001:803::200e	15169 (GOOGLE) (GOOGLE)
1	2001:4860:480... 2001:4860:4802:34::36	15169 (GOOGLE) (GOOGLE)
2	2a00:1450:400... 2a00:1450:400c:c00::9a	15169 (GOOGLE) (GOOGLE)
1	2a00:1450:400... 2a00:1450:4001:827::2003	15169 (GOOGLE) (GOOGLE)
3	2606:4700:7::92 2606:4700:7::92	13335 (CLOUDFLAR...) (CLOUDFLARENET)
2	52.87.144.2 52.87.144.2	14618 (AMAZON-AES) (AMAZON-AES)
2	2a00:1450:400... 2a00:1450:4001:812::2004	15169 (GOOGLE) (GOOGLE)
1	2a00:1450:400... 2a00:1450:4001:831::2003	15169 (GOOGLE) (GOOGLE)
1	2a00:1450:400... 2a00:1450:4001:81c::200a	15169 (GOOGLE) (GOOGLE)
4	2a00:1450:400... 2a00:1450:4001:830::2003	15169 (GOOGLE) (GOOGLE)
101	21

10 2606:4700:3108::ac42:28e7 (United States)

ASN13335 (CLOUDFLARENET, US)

fs.blog	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

33 192.0.77.39 (San Francisco, United States)

ASN2635 (AUTOMATTIC, US)
PTR: wordpress.com

149664534.v2.pressablecdn.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 2a00:1450:4001:82f::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

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

7 2a02:26f0:3500:16::215:1485 (Frankfurt am Main, Germany)

ASN20940 (AKAMAI-ASN1, NL)

use.typekit.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2606:4700::6811:bb70 (United States)

ASN13335 (CLOUDFLARENET, US)

farnam-street-media-inc.ck.page	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 23.56.201.9 (Frankfurt am Main, Germany)

ASN16625 (AKAMAI-AS, US)
PTR: a23-56-201-9.deploy.static.akamaitechnologies.com

cloud.typography.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

19 2400:52e0:1e00::1079:1 (Germany)

ASN200325 (BUNNYCDN, SI)

a.omappapi.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

4 192.0.76.3 (San Francisco, United States)

ASN2635 (AUTOMATTIC, US)

stats.wp.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools
pixel.wp.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2606:4700::6810:5417 (United States)

ASN13335 (CLOUDFLARENET, US)

js.memberful.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a02:26f0:3500:16::215:148b (Frankfurt am Main, Germany)

ASN20940 (AKAMAI-ASN1, NL)

p.typekit.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2606:4700:3108::ac42:2908 (United States)

ASN13335 (CLOUDFLARENET, US)

api.omappapi.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:803::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

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

1 2001:4860:4802:34::36 (United States)

ASN15169 (GOOGLE, US)

region1.analytics.google.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:400c:c00::9a (Brussels, Belgium)

ASN15169 (GOOGLE, US)

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

1 2a00:1450:4001:827::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

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

3 2606:4700:7::92 (United States)

ASN13335 (CLOUDFLARENET, US)

f.convertkit.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools
app.convertkit.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 52.87.144.2 (Ashburn, United States)

ASN14618 (AMAZON-AES, US)
PTR: ec2-52-87-144-2.compute-1.amazonaws.com

secure.gaug.es	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:812::2004 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

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

1 2a00:1450:4001:831::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

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

1 2a00:1450:4001:81c::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

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

4 2a00:1450:4001:830::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

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

	Apex Domain Subdomains	Transfer
33	pressablecdn.com 149664534.v2.pressablecdn.com — Cisco Umbrella Rank: 692474	259 KB
20	omappapi.com a.omappapi.com — Cisco Umbrella Rank: 5911 api.omappapi.com — Cisco Umbrella Rank: 5964	91 KB
10	fs.blog fs.blog — Cisco Umbrella Rank: 468834	106 KB
8	typekit.net use.typekit.net — Cisco Umbrella Rank: 448 p.typekit.net — Cisco Umbrella Rank: 565	326 KB
5	gstatic.com www.gstatic.com fonts.gstatic.com	261 KB
4	wp.com stats.wp.com — Cisco Umbrella Rank: 2906 pixel.wp.com — Cisco Umbrella Rank: 2883	8 KB
3	convertkit.com f.convertkit.com — Cisco Umbrella Rank: 15968 app.convertkit.com — Cisco Umbrella Rank: 17117	17 KB
3	google.com region1.analytics.google.com — Cisco Umbrella Rank: 3095 www.google.com — Cisco Umbrella Rank: 2	1 KB
3	googletagmanager.com www.googletagmanager.com — Cisco Umbrella Rank: 39	283 KB
2	gaug.es secure.gaug.es — Cisco Umbrella Rank: 25513	4 KB
2	doubleclick.net stats.g.doubleclick.net — Cisco Umbrella Rank: 89	396 B
2	google-analytics.com www.google-analytics.com — Cisco Umbrella Rank: 32	21 KB
2	ck.page farnam-street-media-inc.ck.page — Cisco Umbrella Rank: 915159	10 KB
1	googleapis.com fonts.googleapis.com — Cisco Umbrella Rank: 33	1 KB
1	google.de www.google.de — Cisco Umbrella Rank: 7810	63 B
1	memberful.com js.memberful.com — Cisco Umbrella Rank: 32578	23 KB
1	typography.com cloud.typography.com — Cisco Umbrella Rank: 7973	248 B
101	17

	Domain	Requested by
33	149664534.v2.pressablecdn.com	fs.blog
19	a.omappapi.com	fs.blog a.omappapi.com
10	fs.blog	fs.blog 149664534.v2.pressablecdn.com
7	use.typekit.net	fs.blog use.typekit.net
4	fonts.gstatic.com	fonts.googleapis.com
3	www.googletagmanager.com	fs.blog www.googletagmanager.com
2	app.convertkit.com	f.convertkit.com
2	www.google.com	f.convertkit.com www.gstatic.com
2	secure.gaug.es	fs.blog
2	pixel.wp.com	fs.blog
2	stats.g.doubleclick.net	www.googletagmanager.com www.google-analytics.com
2	www.google-analytics.com	www.googletagmanager.com www.google-analytics.com
2	stats.wp.com	fs.blog
2	farnam-street-media-inc.ck.page	fs.blog
1	fonts.googleapis.com	a.omappapi.com
1	www.gstatic.com	www.google.com
1	f.convertkit.com	farnam-street-media-inc.ck.page
1	www.google.de	fs.blog
1	region1.analytics.google.com	www.googletagmanager.com
1	api.omappapi.com	a.omappapi.com
1	p.typekit.net	use.typekit.net
1	js.memberful.com	fs.blog
1	cloud.typography.com	fs.blog
101	23

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

Domain
farnamstreet.memberful.com
twitter.com
www.linkedin.com
www.amazon.com
www.quora.com
www.reddit.com
wordpress.com
pressable.com
syruspartners.com
www.facebook.com
www.youtube.com
www.instagram.com
jetpack.com

Subject Issuer	Validity	Valid
fs.blog E1	`2024-03-16` - `2024-06-14`	3 months	crt.sh
*.v2.pressablecdn.com Sectigo RSA Domain Validation Secure Server CA	`2023-08-02` - `2024-09-01`	a year	crt.sh
*.google-analytics.com GTS CA 1C3	`2024-04-16` - `2024-07-09`	3 months	crt.sh
use.typekit.net DigiCert Global G2 TLS RSA SHA256 2020 CA1	`2024-02-01` - `2025-03-03`	a year	crt.sh
ck.page E1	`2024-05-09` - `2024-08-07`	3 months	crt.sh
*.typography.com DigiCert TLS RSA SHA256 2020 CA1	`2024-03-04` - `2025-03-07`	a year	crt.sh
a.omappapi.com R3	`2024-03-29` - `2024-06-27`	3 months	crt.sh
*.wp.com Sectigo ECC Domain Validation Secure Server CA	`2023-11-28` - `2024-12-28`	a year	crt.sh
memberful.com Cloudflare Inc ECC CA-3	`2024-02-29` - `2024-12-31`	10 months	crt.sh
omappapi.com GTS CA 1P5	`2024-04-18` - `2024-07-17`	3 months	crt.sh
*.g.doubleclick.net GTS CA 1C3	`2024-04-16` - `2024-07-09`	3 months	crt.sh
*.google.de GTS CA 1C3	`2024-04-16` - `2024-07-09`	3 months	crt.sh
convertkit.com Cloudflare Inc ECC CA-3	`2024-03-11` - `2024-12-31`	10 months	crt.sh
*.gaug.es Sectigo RSA Domain Validation Secure Server CA	`2024-03-03` - `2025-04-03`	a year	crt.sh
*.google.com GTS CA 1C3	`2024-04-16` - `2024-07-09`	3 months	crt.sh
*.gstatic.com GTS CA 1C3	`2024-04-16` - `2024-07-09`	3 months	crt.sh
upload.video.google.com GTS CA 1C3	`2024-04-16` - `2024-07-09`	3 months	crt.sh

This page contains 2 frames:

Primary Page: https://fs.blog/first-principles/
Frame ID: F32696A13F11D45E97A6A7AABBA2B23C
Requests: 99 HTTP requests in this frame

Frame: https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LdkIV0UAAAAABtNVAAP99TC6f_18LiETnPK6ziX&co=aHR0cHM6Ly9mcy5ibG9nOjQ0Mw..&hl=de&v=vjbW55W42X033PfTdVf6Ft4q&size=invisible&cb=7fykr9cdetde
Frame ID: 54A26412E9B669EAC5A492CF8B6C1AEE
Requests: 1 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

First Principles: The Building Blocks of True Knowledge

Detected technologies

WordPress (CMS) Expand

Overall confidence: 100%
Detected patterns

<link rel=["']stylesheet["'] [^>]+/wp-(?:content|includes)/
/wp-(?:content|includes)/

Google Analytics (Analytics) Expand

Overall confidence: 100%
Detected patterns

google-analytics\.com/(?:ga|urchin|analytics)\.js

Google Tag Manager (Tag Managers) Expand

Overall confidence: 100%
Detected patterns

googletagmanager\.com/gtag/js

Typekit (Font Scripts) Expand

Overall confidence: 100%
Detected patterns

<link [^>]*href="[^"]+use\.typekit\.(?:net|com)

jQuery (JavaScript Libraries) Expand

Overall confidence: 100%
Detected patterns

jquery.*\.js(?:\?ver(?:sion)?=([\d.]+))?

reCAPTCHA (Captchas) Expand

Overall confidence: 100%
Detected patterns

/recaptcha/api\.js

Page Statistics

101
Requests

100 %
HTTPS

81 %
IPv6

17
Domains

23
Subdomains

21
IPs

3
Countries

1412 kB
Transfer

3199 kB
Size

16
Cookies

14 Outgoing links

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

URL: https://farnamstreet.memberful.com/account
Title: Log In

Search URL Search Domain Scan URL

URL: https://twitter.com/share?url=https://fs.blog/first-principles/&text=First%20Principles%3A%20The%20Building%20Blocks%20of%20True%20Knowledge
Title: Tweet

Search URL Search Domain Scan URL

URL: https://www.linkedin.com/shareArticle?mini=true&url=https://fs.blog/first-principles/
Title: LinkedIn

Search URL Search Domain Scan URL

URL: https://www.amazon.com/gp/product/1591848261/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=farnamstreet-20&creative=9325&linkCode=as2&creativeASIN=1591848261&linkId=1256e603a17e40ab2bcc0cd0f58b23a4
Title: Anything You Want

Search URL Search Domain Scan URL

URL: https://www.quora.com/What-does-Elon-Musk-mean-when-he-said-I-think-it%E2%80%99s-important-to-reason-from-first-principles-rather-than-by-analogy/answer/Bruce-Achterberg
Title: What does Elon Musk mean when he said “I think it’s important to reason from first principles rather than by analogy?”

Search URL Search Domain Scan URL

URL: https://www.reddit.com/r/IAmA/comments/2rgsan/i_am_elon_musk_ceocto_of_a_rocket_company_ama/cnfre0a/
Title: I am Elon Musk, CEO/CTO of a rocket company, AMA!

Search URL Search Domain Scan URL

URL: https://wordpress.com/
Title: WordPress

Search URL Search Domain Scan URL

URL: https://pressable.com/?utm_source=Automattic&utm_medium=rpc&utm_campaign=Concierge%20Referral&utm_term=concierge
Title: Pressable

Search URL Search Domain Scan URL

URL: https://syruspartners.com/
Title: Syrus Partners

Search URL Search Domain Scan URL

URL: https://www.facebook.com/FarnamStreet/

Search URL Search Domain Scan URL

URL: https://twitter.com/shaneaparrish

Search URL Search Domain Scan URL

URL: http://www.youtube.com/c/TheKnowledgeProject

Search URL Search Domain Scan URL

URL: https://www.instagram.com/farnamstreet/

Search URL Search Domain Scan URL

URL: https://jetpack.com/upgrade/search/?utm_source=poweredby
Title: Search powered by Jetpack

Search URL Search Domain Scan URL

Redirected requests

There were HTTP redirect chains for the following requests:

101 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
fs.blog/first-principles/ 93 KB
27 KB 294ms
230ms Document
text/html 2606:4700:3108::ac42:28e7
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://fs.blog/first-principles/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:3108::ac42:28e7 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

93d1c1073d7a30dadeb6df10c60b680ef2a8a8b943299e674df5aaf9e5f9aa5b

Security Headers

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

Request headers

Accept-Language: de-DE,de;q=0.9;q=0.9
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Win32"

Response headers

cache-control: max-age=291, must-revalidate
cf-cache-status: DYNAMIC
cf-ray: 881cd5879bd865bd-FRA
content-encoding: br
content-type: text/html; charset=UTF-8
date: Fri, 10 May 2024 20:56:07 GMT
host-header: wpcloud
last-modified: Fri, 10 May 2024 20:55:58 GMT
link: <https://fs.blog/wp-json/>; rel="https://api.w.org/" <https://fs.blog/wp-json/wp/v2/posts/34975>; rel="alternate"; type="application/json" <https://wp.me/pa4bze-967>; rel=shortlink
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=Fsa6KbUG%2FebWtHjUL8k%2B8FlNsa4GkK0RM6mTb5axWcf2bmNDjcekk0V6IHNhSRJCpFi%2FIHZ2CWF2xS4F5JL59PeSAKsAQZS40imIO6U%2BJXhm2J7C%2FqYr6MlToFB5jGlJTkpix2Q%3D"}],"group":"cf-nel","max_age":604800}
server: cloudflare
strict-transport-security: max-age=31536000
vary: Accept-Encoding Cookie
x-ac: 1.ams _atomic_ams MISS
x-frame-options: SAMEORIGIN
x-nananana: Batcache-Hit

GET
H2 200 fsblog-logo@2x.png
149664534.v2.pressablecdn.com/wp-content/uploads/2021/06/ 2 KB
3 KB 97ms
44ms Image
image/png 192.0.77.39
AUTOMATTIC

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://149664534.v2.pressablecdn.com/wp-content/uploads/2021/06/fsblog-logo@2x.png

Requested by

Host: fs.blog
URL: https://fs.blog/first-principles/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

192.0.77.39 San Francisco, United States, ASN2635 (AUTOMATTIC, US),

Reverse DNS

wordpress.com

Software

nginx /

Resource Hash

40aa4e9ee17261b0b090afcbc2dfaf608bad41352bc268f66ec11d26a4e1a96e

Security Headers

Name	Value
Strict-Transport-Security	max-age=15552000

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

x-nc: HIT hhn 1
date: Fri, 10 May 2024 20:56:07 GMT
x-ac: 1.hhn _atomic_ams MISS
strict-transport-security: max-age=15552000
last-modified: Wed, 13 Oct 2021 20:01:22 GMT
server: nginx
access-control-allow-methods: GET, HEAD
content-type: image/png
access-control-allow-origin: *
cache-control: max-age=604800
accept-ranges: bytes
link: <http://fs.blog/wp-content/uploads/2021/06/fsblog-logo@2x.png>; rel="canonical"
content-length: 2213
alt-svc: h3=":443"; ma=86400, h3=":443"; ma=86400
expires: Fri, 17 May 2024 20:56:07 GMT

GET
H2 200 style.min.css
149664534.v2.pressablecdn.com/wp-includes/css/dist/block-library/ 111 KB
15 KB 74ms
21ms Stylesheet
text/css 192.0.77.39
AUTOMATTIC

General

Check archive.org

Show headers Download Go to

Full URL

https://149664534.v2.pressablecdn.com/wp-includes/css/dist/block-library/style.min.css?ver=6.5.3

Requested by

Host: fs.blog
URL: https://fs.blog/first-principles/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

192.0.77.39 San Francisco, United States, ASN2635 (AUTOMATTIC, US),

Reverse DNS

wordpress.com

Software

nginx /

Resource Hash

98cecf88a23542fa047ce46eedb650b5c5128761ed4386c0977b847094ddfa20

Security Headers

Name	Value
Strict-Transport-Security	max-age=15552000

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

x-nc: HIT hhn 1
date: Fri, 10 May 2024 20:56:07 GMT
content-encoding: br
x-ac: 2.hhn _atomic_ams MISS
strict-transport-security: max-age=15552000
last-modified: Tue, 27 Feb 2024 14:48:23 GMT
server: nginx
vary: Accept-Encoding
access-control-allow-methods: GET, HEAD
content-type: text/css
access-control-allow-origin: *
cache-control: max-age=315360000
link: <http://fs.blog/wp-includes/css/dist/block-library/style.min.css>; rel="canonical"
alt-svc: h3=":443"; ma=86400, h3=":443"; ma=86400
expires: Thu, 31 Dec 2037 23:55:55 GMT

GET
H2 200 mediaelementplayer-legacy.min.css
149664534.v2.pressablecdn.com/wp-includes/js/mediaelement/ 11 KB
3 KB 95ms
42ms Stylesheet
text/css 192.0.77.39
AUTOMATTIC

General

Check archive.org

Show headers Download Go to

Full URL

https://149664534.v2.pressablecdn.com/wp-includes/js/mediaelement/mediaelementplayer-legacy.min.css?ver=4.2.17

Requested by

Host: fs.blog
URL: https://fs.blog/first-principles/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

192.0.77.39 San Francisco, United States, ASN2635 (AUTOMATTIC, US),

Reverse DNS

wordpress.com

Software

nginx /

Resource Hash

b7908a015a567ec2363011df2475368dbff34360e9da3fdff50604d6395fb646

Security Headers

Name	Value
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text/css 192.0.77.39
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text/css 192.0.77.39
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41ms Stylesheet
text/css 192.0.77.39
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Protocol

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22ms Stylesheet
text/css 192.0.77.39
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Protocol

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Server

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21ms Stylesheet
text/css 192.0.77.39
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Protocol

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Server

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wordpress.com

Software

nginx /

Resource Hash

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Response headers

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alt-svc: h3=":443"; ma=86400, h3=":443"; ma=86400
expires: Thu, 31 Dec 2037 23:55:55 GMT

GET
H2 200 style.css
149664534.v2.pressablecdn.com/wp-content/themes/fsblog/ 37 KB
8 KB 94ms
43ms Stylesheet
text/css 192.0.77.39
AUTOMATTIC

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Full URL

https://149664534.v2.pressablecdn.com/wp-content/themes/fsblog/style.css?ver=2.0.0.111620231929

Requested by

Host: fs.blog
URL: https://fs.blog/first-principles/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

192.0.77.39 San Francisco, United States, ASN2635 (AUTOMATTIC, US),

Reverse DNS

wordpress.com

Software

nginx /

Resource Hash

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Security Headers

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Response headers

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link: <http://fs.blog/wp-content/themes/fsblog/style.css>; rel="canonical"
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GET
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20 KB 93ms
41ms Stylesheet
text/css 192.0.77.39
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https://149664534.v2.pressablecdn.com/wp-content/plugins/jetpack/css/jetpack.css?ver=13.4

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Host: fs.blog
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Protocol

Security

TLS 1.3, , AES_128_GCM

Server

192.0.77.39 San Francisco, United States, ASN2635 (AUTOMATTIC, US),

Reverse DNS

wordpress.com

Software

nginx /

Resource Hash

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sec-ch-ua-mobile: ?0
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Response headers

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alt-svc: h3=":443"; ma=86400, h3=":443"; ma=86400
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GET
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872 B 95ms
44ms Script
application/javascript 192.0.77.39
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https://149664534.v2.pressablecdn.com/wp-content/mu-plugins/t51-footnotes/public/footnote-frontend.js?m=1644509025

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Host: fs.blog
URL: https://fs.blog/first-principles/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

192.0.77.39 San Francisco, United States, ASN2635 (AUTOMATTIC, US),

Reverse DNS

wordpress.com

Software

nginx /

Resource Hash

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Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
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Response headers

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alt-svc: h3=":443"; ma=86400, h3=":443"; ma=86400
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GET
H2 200 jquery.min.js Show response
149664534.v2.pressablecdn.com/wp-includes/js/jquery/ 86 KB
31 KB 95ms
44ms Script
application/javascript 192.0.77.39
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https://149664534.v2.pressablecdn.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1

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Host: fs.blog
URL: https://fs.blog/first-principles/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

192.0.77.39 San Francisco, United States, ASN2635 (AUTOMATTIC, US),

Reverse DNS

wordpress.com

Software

nginx /

Resource Hash

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sec-ch-ua-mobile: ?0
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Response headers

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link: <http://fs.blog/wp-includes/js/jquery/jquery.min.js>; rel="canonical"
alt-svc: h3=":443"; ma=86400
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GET
H2 200 / Show response
fs.blog/_static/ 70 KB
25 KB 180ms
178ms Script
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CLOUDFLARENET

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Protocol

Security

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Server

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sec-ch-ua-mobile: ?0
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Response headers

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GET
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4 KB 95ms
43ms Script
application/javascript 192.0.77.39
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https://149664534.v2.pressablecdn.com/wp-includes/js/dist/i18n.min.js?ver=5e580eb46a90c2b997e6

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Protocol

Security

TLS 1.3, , AES_128_GCM

Server

192.0.77.39 San Francisco, United States, ASN2635 (AUTOMATTIC, US),

Reverse DNS

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Software

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Resource Hash

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3 KB 95ms
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application/javascript 192.0.77.39
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https://149664534.v2.pressablecdn.com/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-assets/build/i18n-loader.js?minify=true&ver=b5d2a25bb8ad1698db1c

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Host: fs.blog
URL: https://fs.blog/first-principles/

Protocol

Security

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Server

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Reverse DNS

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Software

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Resource Hash

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sec-ch-ua-mobile: ?0
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alt-svc: h3=":443"; ma=86400, h3=":443"; ma=86400
expires: Thu, 31 Dec 2037 23:55:55 GMT

GET
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www.googletagmanager.com/gtag/ 204 KB
74 KB 96ms
38ms Script
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GOOGLE

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https://www.googletagmanager.com/gtag/js?id=UA-9390663-1

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Host: fs.blog
URL: https://fs.blog/first-principles/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

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AKAMAI-ASN1

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https://use.typekit.net/xmp6ejt.css

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Protocol

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Server

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Response headers

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GET
H2 200 /
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https://fs.blog/?custom-css=166d04c8ad

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URL: https://fs.blog/first-principles/

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TLS 1.3, , AES_128_GCM

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sec-ch-ua-mobile: ?0
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Response headers

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GET
H2 200 js Show response
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105 KB 127ms
68ms Script
application/javascript 2a00:1450:4001:82f::2008
GOOGLE

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https://www.googletagmanager.com/gtag/js?id=G-GL3PCW4PYD

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URL: https://fs.blog/first-principles/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:82f::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

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Response headers

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Response headers

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Response headers

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Response headers

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Request headers

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Response headers

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Request headers

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Response headers

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105 KB 40ms
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GOOGLE

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Full URL

https://www.googletagmanager.com/gtag/js?id=G-GL3PCW4PYD&l=dataLayer&cx=c

Requested by

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Protocol

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Response headers

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GET
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Full URL

https://www.google-analytics.com/analytics.js

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Host: www.googletagmanager.com
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Protocol

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Response headers

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28ms Ping
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GOOGLE

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Full URL: https://region1.analytics.google.com/g/collect?v=2&tid=G-GL3PCW4PYD&gtm=45je4580v9104905272za200&_p=1715374568048&_gaz=1&gcd=13l3l3l2l1&npa=1&dma_cps=sypham&dma=1&cid=427229290.1715374568&ul=de-de&sr=1600x1200&uaa=x86&uab=64&uafvl=Chromium%3B124.0.6367.118%7CGoogle%2520Chrome%3B124.0.6367.118%7CNot-A.Brand%3B99.0.0.0&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&frm=0&pscdl=noapi&_eu=AAAI&_s=1&sid=1715374568&sct=1&seg=0&dl=https%3A%2F%2Ffs.blog%2Ffirst-principles%2F&dt=First%20Principles%3A%20The%20Building%20Blocks%20of%20True%20Knowledge&en=page_view&_fv=1&_nsi=1&_ss=1&tfd=899
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Request headers

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Response headers

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POST
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28ms Ping
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GOOGLE

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Request headers

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sec-ch-ua-platform: "Win32"

Response headers

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GET
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63 B 115ms
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GOOGLE

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Full URL

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Protocol

Security

QUIC, , AES_128_GCM

Server

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Security Headers

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Request headers

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sec-ch-ua-mobile: ?0
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sec-ch-ua-platform: "Win32"

Response headers

pragma: no-cache
date: Fri, 10 May 2024 20:56:08 GMT
x-content-type-options: nosniff
server: cafe
content-type: image/gif
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expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H/1.1 200
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f.convertkit.com/ckjs/ 60 KB
16 KB 107ms
45ms Script
application/javascript 2606:4700:7::92
CLOUDFLARENET

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Full URL: https://f.convertkit.com/ckjs/ck.6.js
Requested by: Host: farnam-street-media-inc.ck.page
URL: https://farnam-street-media-inc.ck.page/d9adcf1677/index.js
Protocol: HTTP/1.1
Security: TLS 1.3, , AES_128_GCM
Server: 2606:4700:7::92 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash: a9ef191b07f0bd1f8eb7e0d2058b6704229a15fef8ec1ce82d441431b6a4b722

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
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Origin: https://fs.blog
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

Date: Fri, 10 May 2024 20:56:08 GMT
Content-Encoding: gzip
CF-Cache-Status: HIT
x-amz-request-id: 5KSQ9YVENE6BG85K
Age: 5020
x-amz-server-side-encryption: AES256
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Last-Modified: Mon, 01 Apr 2024 15:59:27 GMT
Server: cloudflare
ETag: W/"c80d275c7e37369c66b839365b80c161"
Vary: Origin, Access-Control-Request-Headers, Access-Control-Request-Method, Accept-Encoding
Access-Control-Allow-Methods: GET, HEAD
Content-Type: application/javascript; charset=utf-8
Access-Control-Allow-Origin: https://fs.blog
Access-Control-Expose-Headers: Access-Control-Allow-Origin, Access-Control-Request-Method, ETag
Cache-Control: public, max-age=14400
Access-Control-Allow-Credentials: true
CF-RAY: 881cd58d4a101ac5-FRA
Expires: Sat, 11 May 2024 00:56:08 GMT

POST
H2 200 collect Show response
www.google-analytics.com/j/ 2 B
201 B 28ms
28ms XHR
text/plain 2a00:1450:4001:803::200e
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.google-analytics.com/j/collect?v=1&_v=j101&a=1266942504&t=pageview&_s=1&dl=https%3A%2F%2Ffs.blog%2Ffirst-principles%2F&ul=de-de&de=UTF-8&dt=First%20Principles%3A%20The%20Building%20Blocks%20of%20True%20Knowledge&sd=24-bit&sr=1600x1200&vp=1600x1200&je=0&_u=YADAAUABAAAAACAAI~&jid=399991908&gjid=1262946606&cid=427229290.1715374568&tid=UA-9390663-1&_gid=1619125374.1715374569&_r=1&gtm=457e4580za200&gcd=13l3l3l2l1&dma_cps=sypham&dma=1&jsscut=1&npa=1&z=1791746270

Requested by

Host: www.google-analytics.com
URL: https://www.google-analytics.com/analytics.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:803::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

Golfe2 /

Resource Hash

de3246094525b21a870fc7d2a67490d0132535c6fa5993755c549f1a9d1bd8af

Security Headers

Name	Value
X-Content-Type-Options	nosniff

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
sec-ch-ua-platform: "Win32"
Referer: https://fs.blog/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Content-Type: text/plain

Response headers

pragma: no-cache
date: Fri, 10 May 2024 20:56:08 GMT
x-content-type-options: nosniff
last-modified: Sun, 17 May 1998 03:00:00 GMT
server: Golfe2
content-type: text/plain
access-control-allow-origin: https://fs.blog
cache-control: no-cache, no-store, must-revalidate
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 2
expires: Fri, 01 Jan 1990 00:00:00 GMT

POST
H2 200 collect Show response
stats.g.doubleclick.net/j/ 1 B
148 B 29ms
28ms XHR
text/plain 2a00:1450:400c:c00::9a
GOOGLE

General

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Full URL

https://stats.g.doubleclick.net/j/collect?t=dc&aip=1&_r=3&v=1&_v=j101&tid=UA-9390663-1&cid=427229290.1715374568&jid=399991908&gjid=1262946606&_gid=1619125374.1715374569&npa=1&_u=YADAAUAAAAAAACAAI~&z=41550526

Requested by

Host: www.google-analytics.com
URL: https://www.google-analytics.com/analytics.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:400c:c00::9a Brussels, Belgium, ASN15169 (GOOGLE, US),

Reverse DNS

Software

Golfe2 /

Resource Hash

6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

Security Headers

Name	Value
Strict-Transport-Security	max-age=10886400; includeSubDomains; preload
X-Content-Type-Options	nosniff

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
sec-ch-ua-platform: "Win32"
Referer: https://fs.blog/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Content-Type: text/plain

Response headers

pragma: no-cache
strict-transport-security: max-age=10886400; includeSubDomains; preload
date: Fri, 10 May 2024 20:56:08 GMT
x-content-type-options: nosniff
last-modified: Sun, 17 May 1998 03:00:00 GMT
server: Golfe2
content-type: text/plain
access-control-allow-origin: https://fs.blog
cache-control: no-cache, no-store, must-revalidate
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 1
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H2 200 g.gif
pixel.wp.com/ 50 B
177 B 25ms
19ms Image
image/gif 192.0.76.3
AUTOMATTIC

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://pixel.wp.com/g.gif?x_stats-initial-visibility=visible&v=wpcom-no-pv&rand=0.8350191747693199
Requested by: Host: fs.blog
URL: https://fs.blog/first-principles/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 192.0.76.3 San Francisco, United States, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software: nginx /
Resource Hash: f3a8992acb9ab911e0fa4ae12f4b85ef8e61008619f13ee51c7a121ff87f63b1

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

access-control-allow-origin: *
date: Fri, 10 May 2024 20:56:08 GMT
cache-control: no-cache
server: nginx
alt-svc: h3=":443"; ma=86400
content-length: 50
content-type: image/gif

GET
H2 200 g.gif
pixel.wp.com/ 50 B
177 B 24ms
19ms Image
image/gif 192.0.76.3
AUTOMATTIC

General

Check archive.org

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Full URL: https://pixel.wp.com/g.gif?v=ext&blog=148761140&post=34975&tz=-4&srv=fs.blog&hp=atomic&ac=3&amp=0&j=1%3A13.4&host=fs.blog&ref=&rand=0.8400812542215139
Requested by: Host: fs.blog
URL: https://fs.blog/first-principles/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 192.0.76.3 San Francisco, United States, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software: nginx /
Resource Hash: f3a8992acb9ab911e0fa4ae12f4b85ef8e61008619f13ee51c7a121ff87f63b1

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

access-control-allow-origin: *
date: Fri, 10 May 2024 20:56:08 GMT
cache-control: no-cache
server: nginx
alt-svc: h3=":443"; ma=86400
content-length: 50
content-type: image/gif

GET
H/1.1 200
OK track.js Show response
secure.gaug.es/ 4 KB
4 KB 476ms
115ms Script
application/javascript 52.87.144.2
AMAZON-AES

General

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Full URL: https://secure.gaug.es/track.js
Requested by: Host: fs.blog
URL: https://fs.blog/first-principles/
Protocol: HTTP/1.1
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
Server: 52.87.144.2 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS: ec2-52-87-144-2.compute-1.amazonaws.com
Software: nginx/1.10.3 (Ubuntu) /
Resource Hash: df2698e6cf74ed890afa92da10051f880df2ce0b3257b73c5d9ae2f6bea82d3c

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

Date: Fri, 10 May 2024 20:56:09 GMT
Last-Modified: Tue, 12 Mar 2024 12:30:29 GMT
Server: nginx/1.10.3 (Ubuntu)
ETag: "65f04ae5-ef5"
Content-Type: application/javascript
Connection: keep-alive
Accept-Ranges: bytes
Content-Length: 3829

GET
H3 200 api.js Show response
www.google.com/recaptcha/ 1 KB
964 B 74ms
31ms Script
text/javascript 2a00:1450:4001:812::2004
GOOGLE

General

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Full URL

https://www.google.com/recaptcha/api.js?render=6LdkIV0UAAAAABtNVAAP99TC6f_18LiETnPK6ziX

Requested by

Host: f.convertkit.com
URL: https://f.convertkit.com/ckjs/ck.6.js

Protocol

Security

QUIC, , AES_128_GCM

Server

2a00:1450:4001:812::2004 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

GSE /

Resource Hash

880139e2fb1116c14d1a2df05697c250e5ae61f24ed2d9fec252292cfac94304

Security Headers

Name	Value
Content-Security-Policy	frame-ancestors 'self'
X-Content-Type-Options	nosniff
X-Frame-Options	SAMEORIGIN
X-Xss-Protection	1; mode=block

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
content-encoding: gzip
x-content-type-options: nosniff
content-security-policy: frame-ancestors 'self'
server: GSE
x-frame-options: SAMEORIGIN
content-type: text/javascript; charset=utf-8
cache-control: private, max-age=300
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
x-xss-protection: 1; mode=block
expires: Fri, 10 May 2024 20:56:08 GMT

POST
H2 200 admin-ajax.php Show response
fs.blog/wp-admin/ 40 B
626 B 1111ms
1111ms Fetch
application/json 2606:4700:3108::ac42:28e7
CLOUDFLARENET

General

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Show headers Download Go to

Full URL

https://fs.blog/wp-admin/admin-ajax.php

Requested by

Host: 149664534.v2.pressablecdn.com
URL: https://149664534.v2.pressablecdn.com/_static/??wp-content/plugins/convertkit/resources/frontend/js/convertkit.js,wp-includes/js/dist/url.min.js?m=1712861811

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:3108::ac42:28e7 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

4a8b73c32fccac3ba82a30971b45cab56cdce8299a6a3856add2907bcbb8a813

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	SAMEORIGIN

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
sec-ch-ua-platform: "Win32"
Referer: https://fs.blog/first-principles/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Content-Type: application/x-www-form-urlencoded

Response headers

date: Fri, 10 May 2024 20:56:09 GMT
strict-transport-security: max-age=31536000
x-content-type-options: nosniff
cf-cache-status: DYNAMIC
x-ac: 2.hhn _atomic_ams BYPASS
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
content-encoding: br
host-header: wpcloud
referrer-policy: strict-origin-when-cross-origin
server: cloudflare
vary: Accept-Encoding
x-frame-options: SAMEORIGIN
content-type: application/json; charset=UTF-8
access-control-allow-origin: https://fs.blog
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=K6WG7z0yhmOcmniju%2B3NNeOW9%2F7U%2BNySaCCmipCzsfdYFJ01z38OpRK4WfiEmgNmp4WhHKEX3RXYqXlrsms1nY%2FBo0FHKUtTPyH8EKINUgBjh%2FYghW0avHmi32UDMvcXne2cUtA%3D"}],"group":"cf-nel","max_age":604800}
cache-control: no-cache, must-revalidate, max-age=0
access-control-allow-credentials: true
x-robots-tag: noindex
cf-ray: 881cd58ddc4665bd-FRA
expires: Wed, 11 Jan 1984 05:00:00 GMT

GET
H2 200 jp-search.defaultVendors.js Show response
fs.blog/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-search/build/instant-search/ 74 KB
24 KB 42ms
42ms Script
application/javascript 2606:4700:3108::ac42:28e7
CLOUDFLARENET

General

Check archive.org

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Full URL

https://fs.blog/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-search/build/instant-search/jp-search.defaultVendors.js?minify=false&ver=6d3a92c1c97b1f1b0720

Requested by

Host: 149664534.v2.pressablecdn.com
URL: https://149664534.v2.pressablecdn.com/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-search/build/instant-search/jp-search.js?minify=false&ver=353a388b844c416e4fc1

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:3108::ac42:28e7 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

da146bc11056eb5b8964dc866a0a7c14e592dac765270b0dac66d6a07ab23650

Security Headers

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

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/first-principles/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
strict-transport-security: max-age=31536000
x-ac: 1.ams _atomic_ams HIT
cf-cache-status: DYNAMIC
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
content-encoding: br
last-modified: Mon, 15 Apr 2024 20:40:26 GMT
server: cloudflare
etag: W/"661d90ba-12674"
vary: Accept-Encoding
access-control-allow-methods: GET, HEAD
content-type: application/javascript
access-control-allow-origin: *
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=DlyybLcFKnxKCLCfPBwryIaaBkl6MIux473SQLd2FYE9bM4OYXgncohOngV7GNUxZRNXfZg%2B9ZWoyFeX8TgQH0m1HQ3XBGop5e2i4oLZ8mYYPt2QwN5vb4K83g8G1292mU5k2JQ%3D"}],"group":"cf-nel","max_age":604800}
cache-control: max-age=315360000
cf-ray: 881cd58ddc4a65bd-FRA
expires: Thu, 31 Dec 2037 23:55:55 GMT

GET
H2 200 jp-search.chunk-main-payload.css
fs.blog/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-search/build/instant-search/ 36 KB
5 KB 64ms
64ms Stylesheet
text/css 2606:4700:3108::ac42:28e7
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://fs.blog/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-search/build/instant-search/jp-search.chunk-main-payload.css?minify=false&ver=50ae5d7fd24c0e8149fc

Requested by

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:3108::ac42:28e7 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

74065d7fa17592336b64e30e548f58eb5c78dfb4e745859a6547372d16586db6

Security Headers

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

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/first-principles/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
strict-transport-security: max-age=31536000
x-ac: 4.ams _atomic_ams HIT
cf-cache-status: DYNAMIC
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
content-encoding: br
last-modified: Mon, 25 Mar 2024 18:39:50 GMT
server: cloudflare
etag: W/"6601c4f6-8f7d"
vary: Accept-Encoding
access-control-allow-methods: GET, HEAD
content-type: text/css
access-control-allow-origin: *
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=lv7%2BZ6ksje%2BYZvE7JgY7wN4UcwJhWjoNgvHUH3pbLkAp6ShPwLxcKgbz8SMgFuuEXiaeb97DJc%2BVNzZBb%2Bx7HpniLUH2VE5npCt7sENcSvnNs8G0YDPQO3uG0DTlsNubpajWKzk%3D"}],"group":"cf-nel","max_age":604800}
cache-control: max-age=315360000
cf-ray: 881cd58ddc4d65bd-FRA
expires: Thu, 31 Dec 2037 23:55:55 GMT

GET
H2 200 jp-search.chunk-main-payload.js Show response
fs.blog/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-search/build/instant-search/ 74 KB
20 KB 79ms
79ms Script
application/javascript 2606:4700:3108::ac42:28e7
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://fs.blog/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-search/build/instant-search/jp-search.chunk-main-payload.js?minify=false&ver=31192f0f7da170d807e1

Requested by

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:3108::ac42:28e7 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

ebc11b60b54d62445b4841976a70ae28242f30a2a7f39091728e87613ba1338a

Security Headers

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

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/first-principles/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
strict-transport-security: max-age=31536000
x-ac: 2.hhn _atomic_ams HIT
cf-cache-status: DYNAMIC
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
content-encoding: br
last-modified: Mon, 22 Jan 2024 19:02:16 GMT
server: cloudflare
etag: W/"65aebbb8-127fc"
vary: Accept-Encoding
access-control-allow-methods: GET, HEAD
content-type: application/javascript
access-control-allow-origin: *
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=UD9X1Q1GmxRjTKpF5y2kGF%2FbnsbZBrDXwur5SGXglx%2BWKzgllDidyoNtMaIHQt6dAhhjvW%2B0rfhuvd2ELtqVP5ux90qgRYoQpF7LaBuETPauHsHwvFVupcZcGfMI9hucbrDpPcs%3D"}],"group":"cf-nel","max_age":604800}
cache-control: max-age=315360000
cf-ray: 881cd58ddc4f65bd-FRA
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6 KB 19ms
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Full URL: https://a.omappapi.com/app/js/5.ad5ae419.min.js
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URL: https://a.omappapi.com/app/js/api.min.js
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date: Fri, 10 May 2024 20:56:08 GMT
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202 KB 72ms
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Full URL

https://www.gstatic.com/recaptcha/releases/vjbW55W42X033PfTdVf6Ft4q/recaptcha__de.js

Requested by

Host: www.google.com
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sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 14:52:22 GMT
content-encoding: gzip
x-content-type-options: nosniff
age: 21826
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GET
H2 200 4.d8754c5b.min.js Show response
a.omappapi.com/app/js/ 48 KB
14 KB 21ms
20ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/4.d8754c5b.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
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GET
H2 200 13.e8c894f8.min.js Show response
a.omappapi.com/app/js/ 3 KB
2 KB 19ms
19ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/13.e8c894f8.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
Protocol: H2
Security: TLS 1.3, , AES_256_GCM
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sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
content-encoding: br
cdn-edgestorageid: 1081
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cdn-storageserver: DE-663
cdn-cachedat: 05/10/2024 17:38:34
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GET
H2 200 14.8c72a5d3.min.js Show response
a.omappapi.com/app/js/ 6 KB
3 KB 20ms
20ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/14.8c72a5d3.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
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Response headers

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cdn-cachedat: 05/10/2024 17:38:34
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GET
H2 200 20.41293cba.min.js Show response
a.omappapi.com/app/js/ 4 KB
2 KB 21ms
21ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/20.41293cba.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
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sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
content-encoding: br
cdn-edgestorageid: 1080
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cdn-storageserver: DE-679
cdn-cachedat: 05/10/2024 17:38:34
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GET
H2 200 19.b4e5b44b.min.js Show response
a.omappapi.com/app/js/ 4 KB
3 KB 22ms
20ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/19.b4e5b44b.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
Protocol: H2
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sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
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GET
H2 200 27.b5b10bd4.min.js Show response
a.omappapi.com/app/js/ 6 KB
3 KB 24ms
23ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/27.b5b10bd4.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
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sec-ch-ua-mobile: ?0
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sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
content-encoding: br
cdn-edgestorageid: 1079
perma-cache: HIT
cdn-storageserver: DE-679
cdn-cachedat: 05/10/2024 17:38:34
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server: BunnyCDN-DE1-1079
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GET
H2 200 32.b9065693.min.js Show response
a.omappapi.com/app/js/ 11 KB
5 KB 22ms
21ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/32.b9065693.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
Protocol: H2
Security: TLS 1.3, , AES_256_GCM
Server: 2400:52e0:1e00::1079:1 , Germany, ASN200325 (BUNNYCDN, SI),
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Request headers

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sec-ch-ua-mobile: ?0
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sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
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GET
H2 200 10.d6ea746c.min.js Show response
a.omappapi.com/app/js/ 33 KB
10 KB 27ms
25ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/10.d6ea746c.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
Protocol: H2
Security: TLS 1.3, , AES_256_GCM
Server: 2400:52e0:1e00::1079:1 , Germany, ASN200325 (BUNNYCDN, SI),
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sec-ch-ua-mobile: ?0
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sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
content-encoding: br
cdn-edgestorageid: 1081
perma-cache: HIT
cdn-storageserver: DE-383
cdn-cachedat: 05/10/2024 17:38:34
cdn-pullzone: 293267
last-modified: Tue, 12 Mar 2024 17:10:35 GMT
server: BunnyCDN-DE1-1079
cdn-fileserver: 587
cdn-requestpullcode: 200
cdn-proxyver: 1.04
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vary: Accept-Encoding, Accept-Encoding
content-type: application/javascript
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a.omappapi.com/app/js/ 7 KB
3 KB 25ms
24ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/0.3271ac0a.min.js
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URL: https://a.omappapi.com/app/js/api.min.js
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Response headers

date: Fri, 10 May 2024 20:56:08 GMT
content-encoding: br
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GET
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a.omappapi.com/app/js/ 2 KB
2 KB 29ms
28ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/9.09463684.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
Protocol: H2
Security: TLS 1.3, , AES_256_GCM
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sec-ch-ua-platform: "Win32"

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date: Fri, 10 May 2024 20:56:08 GMT
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GET
H2 200 11.f24aae20.min.js Show response
a.omappapi.com/app/js/ 3 KB
2 KB 30ms
29ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/11.f24aae20.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
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sec-ch-ua-mobile: ?0
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sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
content-encoding: br
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GET
H2 200 28.b1a68bf1.min.js Show response
a.omappapi.com/app/js/ 3 KB
2 KB 31ms
30ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/28.b1a68bf1.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
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sec-ch-ua-mobile: ?0
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sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
content-encoding: br
cdn-edgestorageid: 1080
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cdn-storageserver: DE-661
cdn-cachedat: 05/10/2024 17:38:34
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GET
H2 200 26.ece538f7.min.js Show response
a.omappapi.com/app/js/ 2 KB
1 KB 32ms
31ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/26.ece538f7.min.js
Requested by: Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/api.min.js
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sec-ch-ua-mobile: ?0
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sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 10 May 2024 20:56:08 GMT
content-encoding: br
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GET
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a.omappapi.com/app/js/ 1 KB
1 KB 31ms
30ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/16.f8b2cea4.min.js
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URL: https://a.omappapi.com/app/js/api.min.js
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Response headers

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3 KB 50ms
49ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/1.b1faf420.min.js
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URL: https://a.omappapi.com/app/js/api.min.js
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a.omappapi.com/app/js/ 2 KB
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40ms Script
application/javascript 2400:52e0:1e00::1079:1
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Full URL: https://a.omappapi.com/app/js/21.40afa0f2.min.js
Requested by: Host: a.omappapi.com
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Response headers

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GOOGLE

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Full URL

https://fonts.googleapis.com/css2?family=Montserrat%3Aital%2Cwght%400%2C400&family=Source+Sans+Pro%3Aital%2Cwght%400%2C400%3B0%2C600%3B0%2C700&display=swap

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Host: a.omappapi.com
URL: https://a.omappapi.com/app/js/4.d8754c5b.min.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:81c::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

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sec-ch-ua-platform: "Win32"

Response headers

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H3 200 anchor
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0 90ms
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GOOGLE

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Full URL

https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LdkIV0UAAAAABtNVAAP99TC6f_18LiETnPK6ziX&co=aHR0cHM6Ly9mcy5ibG9nOjQ0Mw..&hl=de&v=vjbW55W42X033PfTdVf6Ft4q&size=invisible&cb=7fykr9cdetde

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Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Win32"

Response headers

alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
cache-control: no-cache, no-store, max-age=0, must-revalidate
content-encoding: gzip
content-security-policy: script-src 'report-sample' 'nonce-9UlsxsuasyA9AoBZcAvWpQ' 'unsafe-inline' 'strict-dynamic' https: http: 'unsafe-eval';object-src 'none';base-uri 'self';report-uri https://csp.withgoogle.com/csp/recaptcha/1
content-type: text/html; charset=utf-8
cross-origin-embedder-policy: require-corp
cross-origin-resource-policy: cross-origin
date: Fri, 10 May 2024 20:56:08 GMT
expires: Mon, 01 Jan 1990 00:00:00 GMT
pragma: no-cache
report-to: {"group":"recaptcha","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/recaptcha"}]}
server: GSE
x-content-type-options: nosniff
x-xss-protection: 1; mode=block

GET
H2 200 JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aXo.woff2
fonts.gstatic.com/s/montserrat/v26/ 15 KB
15 KB 72ms
26ms Font
font/woff2 2a00:1450:4001:830::2003
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/montserrat/v26/JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aXo.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css2?family=Montserrat%3Aital%2Cwght%400%2C400&family=Source+Sans+Pro%3Aital%2Cwght%400%2C400%3B0%2C600%3B0%2C700&display=swap

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:830::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

4b5816bbfc52587979139951355fe4048da02ce60e40cef8e4a1efb6cd396281

Security Headers

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

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fonts.googleapis.com/
Origin: https://fs.blog
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Tue, 07 May 2024 07:59:33 GMT
x-content-type-options: nosniff
age: 305795
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: 14940
x-xss-protection: 0
last-modified: Wed, 13 Sep 2023 22:46:07 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: Wed, 07 May 2025 07:59:33 GMT

GET
H2 200 6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwlxdu.woff2
fonts.gstatic.com/s/sourcesanspro/v22/ 14 KB
15 KB 66ms
20ms Font
font/woff2 2a00:1450:4001:830::2003
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/sourcesanspro/v22/6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwlxdu.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css2?family=Montserrat%3Aital%2Cwght%400%2C400&family=Source+Sans+Pro%3Aital%2Cwght%400%2C400%3B0%2C600%3B0%2C700&display=swap

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:830::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

0d0a6262c545e8bbc895116e5afb22579c468d7abb77e378f377d6fed57c1dce

Security Headers

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

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fonts.googleapis.com/
Origin: https://fs.blog
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Tue, 07 May 2024 07:48:52 GMT
x-content-type-options: nosniff
age: 306436
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: 14712
x-xss-protection: 0
last-modified: Thu, 01 Jun 2023 22:52:57 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: Wed, 07 May 2025 07:48:52 GMT

GET
H2 200 6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7l.woff2
fonts.gstatic.com/s/sourcesanspro/v22/ 15 KB
15 KB 93ms
47ms Font
font/woff2 2a00:1450:4001:830::2003
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/sourcesanspro/v22/6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7l.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css2?family=Montserrat%3Aital%2Cwght%400%2C400&family=Source+Sans+Pro%3Aital%2Cwght%400%2C400%3B0%2C600%3B0%2C700&display=swap

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:830::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

7b348b30ea1fe43857e68fc462c29e5c6e63c97666af75135c4396a272e54762

Security Headers

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

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fonts.googleapis.com/
Origin: https://fs.blog
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Tue, 07 May 2024 07:43:10 GMT
x-content-type-options: nosniff
age: 306778
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: 14892
x-xss-protection: 0
last-modified: Thu, 01 Jun 2023 22:52:56 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: Wed, 07 May 2025 07:43:10 GMT

GET
H2 200 6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwlxdu.woff2
fonts.gstatic.com/s/sourcesanspro/v22/ 14 KB
15 KB 88ms
42ms Font
font/woff2 2a00:1450:4001:830::2003
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/sourcesanspro/v22/6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwlxdu.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css2?family=Montserrat%3Aital%2Cwght%400%2C400&family=Source+Sans+Pro%3Aital%2Cwght%400%2C400%3B0%2C600%3B0%2C700&display=swap

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:830::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

ca57b79a870bbf54700730858603a70d79743779c1b059922ec401bfddc5adc9

Security Headers

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

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fonts.googleapis.com/
Origin: https://fs.blog
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Tue, 07 May 2024 07:55:39 GMT
x-content-type-options: nosniff
age: 306029
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: 14824
x-xss-protection: 0
last-modified: Thu, 01 Jun 2023 22:52:55 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: Wed, 07 May 2025 07:55:39 GMT

GET
H/1.1 200
OK track.gif
secure.gaug.es/ 35 B
389 B 121ms
121ms Image
image/gif 52.87.144.2
AMAZON-AES

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://secure.gaug.es/track.gif?h[site_id]=616841283670d35896636cd3&h[resource]=https%3A%2F%2Ffs.blog%2Ffirst-principles%2F&h[referrer]=&h[title]=First%20Principles%3A%20The%20Building%20Blocks%20of%20True%20Knowledge&h[user_agent]=Mozilla%2F5.0%20(Windows%20NT%2010.0%3B%20Win64%3B%20x64)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F124.0.0.0%20Safari%2F537.36&h[unique]=1&h[unique_hour]=1&h[unique_day]=1&h[unique_month]=1&h[unique_year]=1&h[screenx]=1600&h[browserx]=1600&h[browsery]=1200&timestamp=1715374569076

Requested by

Host: fs.blog
URL: https://fs.blog/first-principles/

Protocol

HTTP/1.1

Security

TLS 1.2, ECDHE_RSA, AES_128_GCM

Server

52.87.144.2 Ashburn, United States, ASN14618 (AMAZON-AES, US),

Reverse DNS

ec2-52-87-144-2.compute-1.amazonaws.com

Software

nginx/1.10.3 (Ubuntu) /

Resource Hash

8337212354871836e6763a41e615916c89bac5b3f1f0adf60ba43c7c806e1015

Security Headers

Name	Value
X-Content-Type-Options	nosniff

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

Pragma: no-cache
Date: Fri, 10 May 2024 20:56:09 GMT
X-Content-Type-Options: nosniff
Last-Modified: Fri, 10 May 2024 20:56:09 GMT
Server: nginx/1.10.3 (Ubuntu)
Content-Type: image/gif
Cache-Control: no-store, no-cache, must-revalidate, private
Connection: keep-alive
Content-Length: 35
Expires: Sat, 25 Nov 2000 05:00:00 GMT

GET
H2 200 cropped-farnamstreet-80x80.png
149664534.v2.pressablecdn.com/wp-content/uploads/2015/06/ 6 KB
7 KB 20ms
20ms Other
image/png 192.0.77.39
AUTOMATTIC

General

Check archive.org

Show headers Download Go to

Full URL

https://149664534.v2.pressablecdn.com/wp-content/uploads/2015/06/cropped-farnamstreet-80x80.png

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

192.0.77.39 San Francisco, United States, ASN2635 (AUTOMATTIC, US),

Reverse DNS

wordpress.com

Software

nginx /

Resource Hash

e3a992f41e541ea16b5e59214a79a502b964b16dd5a5491f94157f7ec86df1a9

Security Headers

Name	Value
Strict-Transport-Security	max-age=15552000

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://fs.blog/
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

x-nc: HIT hhn 1
date: Fri, 10 May 2024 20:56:09 GMT
x-ac: 1.hhn _atomic_ams BYPASS
strict-transport-security: max-age=15552000
last-modified: Thu, 14 Oct 2021 17:01:52 GMT
server: nginx
content-type: image/png
cache-control: max-age=604800
accept-ranges: bytes
link: <http://fs.blog/wp-content/uploads/2015/06/cropped-farnamstreet-80x80.png>; rel="canonical"
content-length: 6410
alt-svc: h3=":443"; ma=86400
expires: Fri, 17 May 2024 20:56:09 GMT

OPTIONS
H/1.1 200
OK visit
app.convertkit.com/forms/5654195/ Frame 0
0 232ms
166ms Preflight 2606:4700:7::92
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://app.convertkit.com/forms/5654195/visit
Protocol: HTTP/1.1
Security: TLS 1.3, , AES_128_GCM
Server: 2606:4700:7::92 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash

Request headers

Accept: */*
Access-Control-Request-Headers: content-type,x-ckjs-version
Access-Control-Request-Method: POST
Origin: https://fs.blog
Sec-Fetch-Mode: cors
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Response headers

Access-Control-Allow-Origin: *
CF-Cache-Status: DYNAMIC
CF-Ray: 881cd59bc8cf973e-FRA
Connection: keep-alive
Content-Length: 0
Date: Fri, 10 May 2024 20:56:10 GMT
Server: cloudflare
Vary: Accept-Encoding
access-control-allow-headers: content-type,x-ckjs-version
access-control-allow-methods: GET, POST, PUT, OPTIONS
access-control-expose-headers
access-control-max-age: 7200

POST
H/1.1 200
OK visit Show response
app.convertkit.com/forms/5654195/ 7 B
1 KB 570ms
570ms Fetch
application/json 2606:4700:7::92
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://app.convertkit.com/forms/5654195/visit

Requested by

Host: f.convertkit.com
URL: https://f.convertkit.com/ckjs/ck.6.js

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:7::92 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

aee408847d35e44e99430f0979c3357b85fe8dbb4535a494301198adbee85f27

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000; includeSubDomains
X-Content-Type-Options	nosniff
X-Frame-Options	ALLOWALL
X-Xss-Protection	0

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Content-Type: application/json
Accept: application/json
X-CKJS-Version: 6
Referer: https://fs.blog/
sec-ch-ua-platform: "Win32"

Response headers

Date: Fri, 10 May 2024 20:56:11 GMT
Strict-Transport-Security: max-age=63072000; includeSubDomains
x-content-type-options: nosniff
CF-Cache-Status: DYNAMIC
x-permitted-cross-domain-policies: none
Connection: keep-alive
Content-Length: 7
x-xss-protection: 0
x-request-id: 7e6cdf90-e720-4f2f-8a28-22e96410e9da
x-runtime: 0.009062
referrer-policy: strict-origin-when-cross-origin
Server: cloudflare
ETag: W/"aee408847d35e44e99430f0979c3357b"
Vary: Accept, Origin, Accept-Encoding
access-control-allow-methods: POST
Content-Type: application/json; charset=utf-8
Access-Control-Allow-Origin: *
access-control-expose-headers
Cache-Control: max-age=0, private, must-revalidate
access-control-max-age: 7200
CF-Ray: 881cd59cda5d973e-FRA
x-frame-options: ALLOWALL

Verdicts & Comments Add Verdict or Comment

65 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.

16 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
www.google.com/recaptcha	1970-01-21 00:48:46	Name: _GRECAPTCHA Value: 09AKDSkeZTAPLcO7AIVu1jzkntORNATey9dONhhzTVhk1Psj4hPIlqefJoP22cCe-ECA-SzgIDDXYhbIR6JajZlC8
fs.blog/	1970-01-21 06:05:34	Name: _omappvp Value: WjZaJrHoJ6oqq6CjHgCTo0kCdNCfmP5yTRdf4aLowbFQLrSWaTx3qAp7e88evQjjJTlQwPlaxJ5G3sAVcmi40A8wZd9B6MKT
fs.blog/	1970-01-20 20:29:35	Name: _omappvs Value: 1715374568338
.memberful.com/	1970-01-20 20:29:36	Name: __cf_bm Value: 0UiPUXL2IWU.EtVzCTkC3J_vr5FapSGMp2vQq1XkyHk-1715374568-1.0.1.1-cBX6z_3VsqsRIgy7E.M3PbuxXGzUYQ0w2BubysAEAMtp9IiCp6xPmPxhzd1iDQeoyT6JnCeMa1LDka4ozeUeNg
.fs.blog/	1970-01-21 06:05:34	Name: _ga_GL3PCW4PYD Value: GS1.1.1715374568.1.0.1715374568.60.0.0
.fs.blog/	1970-01-21 06:05:34	Name: _ga Value: GA1.2.427229290.1715374568
.fs.blog/	1970-01-20 20:31:00	Name: _gid Value: GA1.2.1619125374.1715374569
.fs.blog/	1970-01-20 20:29:34	Name: _gat_gtag_UA_9390663_1 Value: 1
.ck.page/	1970-01-20 20:29:36	Name: __cf_bm Value: U89Db9KntsyZYw2yLC8V8v6tsfKNpMxFOGhjtcYqG3U-1715374568-1.0.1.1-8hgtJwwhgJVjwAAYQB9l3T2nJDmfuY4CZ9ABFhVlv8L8qtLrBWlnghayQW5JtHFbR96YwPHpKKJPqmd6.R0R2w
.fs.blog/	1970-01-21 06:05:34	Name: tk_ai Value: 9fvfP%2BxAc4tNFn9m4Cr9A6c3
fs.blog/	1970-01-20 20:29:38	Name: _gauges_unique_hour Value: 1
fs.blog/	1970-01-20 20:31:00	Name: _gauges_unique_day Value: 1
fs.blog/	1970-01-20 21:14:12	Name: _gauges_unique_month Value: 1
fs.blog/	1970-01-21 05:15:10	Name: _gauges_unique_year Value: 1
fs.blog/	1970-01-21 05:15:10	Name: _gauges_unique Value: 1
fs.blog/	1970-01-21 05:15:10	Name: ck_subscriber_id Value: 184479661

5 Console Messages

A page may trigger messages to the console to be logged. These are often error messages about being unable to load a resource or execute a piece of JavaScript. Sometimes they also provide insight into the technology behind a website.

Source	Level	URL Text
other	warning	URL: https://fs.blog/first-principles/ Message: Third-party cookie will be blocked. Learn more in the Issues tab.
other	warning	URL: https://fs.blog/first-principles/ Message: Third-party cookie will be blocked. Learn more in the Issues tab.
other	warning	URL: https://fs.blog/first-principles/ Message: Third-party cookie will be blocked. Learn more in the Issues tab.
other	warning	URL: https://fs.blog/first-principles/ Message: Third-party cookie will be blocked. Learn more in the Issues tab.
other	warning	URL: https://fs.blog/first-principles/ Message: Third-party cookie will be blocked. Learn more in the Issues tab.

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.

149664534.v2.pressablecdn.com
a.omappapi.com
api.omappapi.com
app.convertkit.com
cloud.typography.com
f.convertkit.com
farnam-street-media-inc.ck.page
fonts.googleapis.com
fonts.gstatic.com
fs.blog
js.memberful.com
p.typekit.net
pixel.wp.com
region1.analytics.google.com
secure.gaug.es
stats.g.doubleclick.net
stats.wp.com
use.typekit.net
www.google-analytics.com
www.google.com
www.google.de
www.googletagmanager.com
www.gstatic.com
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fs.blog Open in urlscan Pro 2606:4700:3108::ac42:28e7 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

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Detected technologies

Page Statistics

101 Requests

100 %HTTPS

81 %IPv6

17 Domains

23 Subdomains

21 IPs

3 Countries

1412 kBTransfer

3199 kBSize

16 Cookies

14 Outgoing links

Redirected requests

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

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fs.blog Open in urlscan Pro
2606:4700:3108::ac42:28e7 Public Scan

Screenshot
Live screenshot

Full Image

101
Requests

100 %
HTTPS

81 %
IPv6

17
Domains

23
Subdomains

21
IPs

3
Countries

1412 kB
Transfer

3199 kB
Size

16
Cookies

101 HTTP transactions
0 data transactions