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52.5.181.79 Public Scan

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Submitted URL:
https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506
Effective URL:
https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506?gi=b4dd46c54647
Submission: On May 23 via automatic, source hackernews (May 23rd 2019, 2:20:21 pm UTC)

Summary HTTP 63 Redirects Links 18 Behaviour Indicators

Summary

This website contacted 16 IPs in 3 countries across 10 domains to perform 63 HTTP transactions. The main IP is 52.5.181.79, located in Ashburn, United States and belongs to AMAZON-AES - Amazon.com, Inc., US. The main domain is heartbeat.fritz.ai.
TLS certificate: Issued by COMODO RSA Domain Validation Secure S... on October 11th 2018. Valid for: a year.

This is the only time heartbeat.fritz.ai was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
1 4	52.5.181.79 52.5.181.79	14618 (AMAZON-AES) (AMAZON-AES - Amazon.com)
1 6	2606:4700::68... 2606:4700::6810:797f	13335 (CLOUDFLAR...) (CLOUDFLARENET - Cloudflare)
18	2606:4700::68... 2606:4700::6810:7691	13335 (CLOUDFLAR...) (CLOUDFLARENET - Cloudflare)
1 3	2a00:1450:400... 2a00:1450:4001:817::200e	15169 (GOOGLE) (GOOGLE - Google LLC)
6	2606:4700::68... 2606:4700::6810:7791	13335 (CLOUDFLAR...) (CLOUDFLARENET - Cloudflare)
4	104.16.90.50 104.16.90.50	13335 (CLOUDFLAR...) (CLOUDFLARENET - Cloudflare)
1	13.35.254.37 13.35.254.37	16509 (AMAZON-02) (AMAZON-02 - Amazon.com)
1	2a00:1450:400... 2a00:1450:400c:c08::9d	15169 (GOOGLE) (GOOGLE - Google LLC)
1	13.35.253.12 13.35.253.12	16509 (AMAZON-02) (AMAZON-02 - Amazon.com)
5	2606:4700::68... 2606:4700::6810:787f	13335 (CLOUDFLAR...) (CLOUDFLARENET - Cloudflare)
1	34.202.247.9 34.202.247.9	14618 (AMAZON-AES) (AMAZON-AES - Amazon.com)
1	2600:9000:200... 2600:9000:200d:2e00:19:9934:6a80:93a1	16509 (AMAZON-02) (AMAZON-02 - Amazon.com)
10	18.235.247.199 18.235.247.199	14618 (AMAZON-AES) (AMAZON-AES - Amazon.com)
4	2600:9000:200... 2600:9000:200d:6a00:11:f728:3040:93a1	16509 (AMAZON-02) (AMAZON-02 - Amazon.com)
1	52.0.186.222 52.0.186.222	14618 (AMAZON-AES) (AMAZON-AES - Amazon.com)
63	16

4 52.5.181.79 (Ashburn, United States) 1 redirects

ASN14618 (AMAZON-AES - Amazon.com, Inc., US)
PTR: ec2-52-5-181-79.compute-1.amazonaws.com

heartbeat.fritz.ai	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

6 2606:4700::6810:797f (United States) 1 redirects

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)

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

18 2606:4700::6810:7691 (United States)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)

glyph.medium.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools
cdn-static-1.medium.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools
cdn-images-1.medium.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 2a00:1450:4001:817::200e (Frankfurt am Main, Germany) 1 redirects

ASN15169 (GOOGLE - Google LLC, US)

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

6 2606:4700::6810:7791 (United States)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)

cdn-images-1.medium.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools
glyph.medium.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

4 104.16.90.50 (United States)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)

i.embed.ly	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 13.35.254.37 (Seattle, United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)
PTR: server-13-35-254-37.fra6.r.cloudfront.net

d1z2jf7jlzjs58.cloudfront.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:400c:c08::9d (Brussels, Belgium)

ASN15169 (GOOGLE - Google LLC, US)

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

1 13.35.253.12 (Seattle, United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)
PTR: server-13-35-253-12.fra6.r.cloudfront.net

cdn.branch.io	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

5 2606:4700::6810:787f (United States)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)

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

1 34.202.247.9 (Ashburn, United States)

ASN14618 (AMAZON-AES - Amazon.com, Inc., US)
PTR: ec2-34-202-247-9.compute-1.amazonaws.com

srv-2019-05-23-14.pixel.parsely.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2600:9000:200d:2e00:19:9934:6a80:93a1 (United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)

app.link	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

10 18.235.247.199 (Ashburn, United States)

ASN14618 (AMAZON-AES - Amazon.com, Inc., US)
PTR: ec2-18-235-247-199.compute-1.amazonaws.com

collector-medium.lightstep.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

4 2600:9000:200d:6a00:11:f728:3040:93a1 (United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)

api2.branch.io	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 52.0.186.222 (Ashburn, United States)

ASN14618 (AMAZON-AES - Amazon.com, Inc., US)
PTR: ec2-52-0-186-222.compute-1.amazonaws.com

srv-2019-05-23-14.pixel.parsely.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
35	medium.com 1 redirects medium.com glyph.medium.com cdn-static-1.medium.com cdn-images-1.medium.com	1 MB
10	lightstep.com collector-medium.lightstep.com	2 KB
5	branch.io cdn.branch.io api2.branch.io	23 KB
4	embed.ly i.embed.ly	2 KB
4	fritz.ai 1 redirects heartbeat.fritz.ai	35 KB
3	google-analytics.com 1 redirects www.google-analytics.com	18 KB
2	parsely.com srv-2019-05-23-14.pixel.parsely.com	765 B
1	app.link app.link	699 B
1	doubleclick.net stats.g.doubleclick.net	102 B
1	cloudfront.net d1z2jf7jlzjs58.cloudfront.net	16 KB
63	10

	Domain	Requested by
15	cdn-images-1.medium.com	heartbeat.fritz.ai
11	medium.com	1 redirects cdn-static-1.medium.com heartbeat.fritz.ai
10	collector-medium.lightstep.com	cdn-static-1.medium.com heartbeat.fritz.ai
5	glyph.medium.com	heartbeat.fritz.ai
4	api2.branch.io	cdn.branch.io
4	i.embed.ly	heartbeat.fritz.ai
4	cdn-static-1.medium.com	heartbeat.fritz.ai cdn-static-1.medium.com
4	heartbeat.fritz.ai	1 redirects heartbeat.fritz.ai cdn-static-1.medium.com
3	www.google-analytics.com	1 redirects heartbeat.fritz.ai
2	srv-2019-05-23-14.pixel.parsely.com	d1z2jf7jlzjs58.cloudfront.net
1	app.link	cdn.branch.io
1	cdn.branch.io	heartbeat.fritz.ai
1	stats.g.doubleclick.net	heartbeat.fritz.ai
1	d1z2jf7jlzjs58.cloudfront.net	heartbeat.fritz.ai
63	14

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

Domain
medium.com
fritz.ai
www.deeplearningweekly.com
www.jeremyjordan.me
towardsdatascience.com
arxiv.org
machinelearningmastery.com
bit.ly
twitter.com
www.linkedin.com

Subject Issuer	Validity	Valid
heartbeat.fritz.ai COMODO RSA Domain Validation Secure Server CA	`2018-10-11` - `2019-10-11`	a year	crt.sh
*.medium.com DigiCert SHA2 Secure Server CA	`2018-07-31` - `2020-09-09`	2 years	crt.sh
*.google-analytics.com Google Internet Authority G3	`2019-05-07` - `2019-07-30`	3 months	crt.sh
*.embed.ly COMODO RSA Domain Validation Secure Server CA	`2018-02-23` - `2021-02-22`	3 years	crt.sh
*.cloudfront.net DigiCert Global CA G2	`2018-10-08` - `2019-10-09`	a year	crt.sh
*.g.doubleclick.net Google Internet Authority G3	`2019-05-07` - `2019-07-30`	3 months	crt.sh
*.branch.io DigiCert SHA2 Secure Server CA	`2018-12-05` - `2020-12-08`	2 years	crt.sh
medium.com DigiCert SHA2 Extended Validation Server CA	`2017-06-01` - `2019-08-30`	2 years	crt.sh
*.pixel.parsely.com Amazon	`2019-02-27` - `2020-03-27`	a year	crt.sh
appipv4.link Amazon	`2018-09-17` - `2019-10-17`	a year	crt.sh
*.lightstep.com Let's Encrypt Authority X3	`2019-04-30` - `2019-07-29`	3 months	crt.sh

This page contains 1 frames:

Primary Page: https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506?gi=b4dd46c54647
Frame ID: 36ECBB1DE16AFC1E536A85DE6D3CF9AA
Requests: 67 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page URL History Show full URLs

https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506 HTTP 302
https://medium.com/m/global-identity?redirectUrl=https%3A%2F%2Fheartbeat.fritz.ai%2Fintroductio... HTTP 302
https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506?gi=b4dd46c54647 Page URL

Detected technologies

Medium (Blogs) Expand

Overall confidence: 100%
Detected patterns

script /medium\.com/i

Nginx (Web Servers) Expand

Overall confidence: 100%
Detected patterns

headers server /nginx(?:\/([\d.]+))?/i

Google Analytics (Analytics) Expand

Overall confidence: 100%
Detected patterns

script /google-analytics\.com\/(?:ga|urchin|(analytics))\.js/i
env /^gaGlobal$/i

Parse.ly (Analytics) Expand

Overall confidence: 100%
Detected patterns

env /^PARSELY$/i

Page Statistics

63
Requests

100 %
HTTPS

53 %
IPv6

10
Domains

14
Subdomains

16
IPs

3
Countries

1356 kB
Transfer

3367 kB
Size

13
Cookies

18 Outgoing links

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

URL: https://medium.com/policy/f03bf92035c9
Title: Privacy Policy

Search URL Search Domain Scan URL

URL: https://medium.com/
Title: Homepage

Search URL Search Domain Scan URL

URL: https://medium.com/m/signin?redirect=https%3A%2F%2Fheartbeat.fritz.ai%2Fintroduction-to-learning-rates-in-machine-learning-6ed685c16506&source=--------------------------nav_reg&operation=login
Title: Sign in

Search URL Search Domain Scan URL

URL: http://fritz.ai/
Title: ABOUT FRITZ

Search URL Search Domain Scan URL

URL: https://www.deeplearningweekly.com/newsletter?utm_campaign=dlweekly-newsletter-expertise3&utm_source=heartbeat
Title: Sign up

Search URL Search Domain Scan URL

URL: https://www.jeremyjordan.me/nn-learning-rate/
Title: here

Search URL Search Domain Scan URL

URL: https://towardsdatascience.com/estimating-optimal-learning-rate-for-a-deep-neural-network-ce32f2556ce0
Title: here

Search URL Search Domain Scan URL

URL: https://arxiv.org/abs/1803.02865
Title: here

Search URL Search Domain Scan URL

URL: https://machinelearningmastery.com/learning-rate-for-deep-learning-neural-networks/
Title: How to Configure the Learning Rate Hyperparameter When Training Deep Learning Neural NetworksThe weights of a neural network cannot be calculated using an analytical method. Instead, the weights must be…machinelearningmastery.com

Search URL Search Domain Scan URL

URL: https://arxiv.org/abs/1506.01186
Title: Cyclical Learning Rates for Training Neural Networks

Search URL Search Domain Scan URL

URL: http://bit.ly/heartbeatslack
Title: Join Heartbeat on Slack

Search URL Search Domain Scan URL

URL: https://twitter.com/fritzlabs
Title: Twitter

Search URL Search Domain Scan URL

URL: https://www.linkedin.com/company/fritz-labs-inc/
Title: LinkedIn

Search URL Search Domain Scan URL

URL: https://medium.com/@austin_32493?source=post_page
Title: Austin Kodra

Search URL Search Domain Scan URL

URL: https://medium.com/p/6ed685c16506/share/twitter

Search URL Search Domain Scan URL

URL: https://medium.com/p/6ed685c16506/share/facebook

Search URL Search Domain Scan URL

URL: https://medium.com/@Medium/personalize-your-medium-experience-with-users-publications-tags-26a41ab1ee0c#.hx4zuv3mg
Title: Learn more

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.

https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506 HTTP 302
https://medium.com/m/global-identity?redirectUrl=https%3A%2F%2Fheartbeat.fritz.ai%2Fintroduction-to-learning-rates-in-machine-learning-6ed685c16506 HTTP 302
https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506?gi=b4dd46c54647 Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 24

https://www.google-analytics.com/r/collect?v=1&_v=j75&a=1015234974&t=pageview&_s=1&dl=https%3A%2F%2Fheartbeat.fritz.ai%2Fintroduction-to-learning-rates-in-machine-learning-6ed685c16506%3Fgi%3Db4dd46c54647&ul=en-us&de=UTF-8&dt=Introduction%20to%20Learning%20Rates%20in%20Machine%20Learning%20%E2%80%93%20Heartbeat&sd=24-bit&sr=1600x1200&vp=1585x1200&je=0&_u=IEDAAEAB~&jid=1735111198&gjid=2086779244&cid=1911129652.1558621204&tid=UA-109026462-6&_gid=34566638.1558621204&_r=1&z=774655300 HTTP 302
https://stats.g.doubleclick.net/r/collect?v=1&aip=1&t=dc&_r=3&tid=UA-109026462-6&cid=1911129652.1558621204&jid=1735111198&_gid=34566638.1558621204&gjid=2086779244&_v=j75&z=774655300

63 HTTP transactions
4 data transactions

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

GET
H2

200

Primary Request introduction-to-learning-rates-in-machine-learning-6ed685c16506 Show response
heartbeat.fritz.ai/
Redirect Chain

https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506
https://medium.com/m/global-identity?redirectUrl=https%3A%2F%2Fheartbeat.fritz.ai%2Fintroduction-to-learning-rates-in-machine-learning-6ed685c16506
https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506?gi=b4dd46c54647

144 KB
33 KB

477ms
476ms

Document
text/html

52.5.181.79
Amazon.com

General

Check archive.org

Show headers Download Go to

Full URL

https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506?gi=b4dd46c54647

Protocol

Security

TLS 1.2, ECDHE_RSA, AES_256_GCM

Server

52.5.181.79 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),

Reverse DNS

ec2-52-5-181-79.compute-1.amazonaws.com

Software

nginx / Medium

Resource Hash

fe029a5dbafe86dc8c758303703e45d647e460c6f080b49c29887916eb683ca7

Security Headers

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X-Content-Type-Options	nosniff
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Request headers

:method: GET
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:scheme: https
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Response headers

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server: cloudflare
cf-ray: 4db7ab12c9a8d711-FRA

GET
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29 KB 80ms
24ms Stylesheet
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Cloudflare

General

Check archive.org

Show headers Download Go to

Full URL

https://glyph.medium.com/css/e/sr/latin/e/ssr/latin/e/ssb/latin/m2.css

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User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36
Content-Type: application/json
Accept: application/json
Referer: https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506
X-Obvious-CID: web

Response headers

date: Thu, 23 May 2019 14:20:09 GMT
x-content-type-options: nosniff
x-powered-by: Medium
x-obvious-info: 37611-52e7d07,52e7d07a159
status: 409
content-length: 115
x-xss-protection: 1; mode=block
x-ua-compatible: IE=edge, Chrome=1
pragma: no-cache
link: <https://medium.com/humans.txt>; rel="humans"
x-obvious-tid: 1558621209296:3ccb279099ce
server: nginx
x-frame-options: sameorigin
content-type: application/json; charset=utf-8
cache-control: no-cache, no-store, max-age=0, must-revalidate
x-opentracing: {"ot-tracer-spanid":"7f3e8f3d0695386b","ot-tracer-traceid":"10bea36a4a22ab68","ot-tracer-sampled":"true"}
expires: Thu, 09 Sep 1999 09:09:09 GMT

OPTIONS
H2 200 reports Show response
collector-medium.lightstep.com/api/v0/ 0
174 B 117ms
116ms XHR
text/plain 18.235.247.199
Amazon.com

General

Check archive.org

Show headers Download Go to

Full URL: https://collector-medium.lightstep.com/api/v0/reports
Requested by: Host: cdn-static-1.medium.com
URL: https://cdn-static-1.medium.com/_/fp/gen-js/main-base.bundle.eLlyaWBfcZCiNDLVx0Hl4g.js
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
Server: 18.235.247.199 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS: ec2-18-235-247-199.compute-1.amazonaws.com
Software: /
Resource Hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Access-Control-Request-Method: POST
Origin: https://heartbeat.fritz.ai
Referer: https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36
Access-Control-Request-Headers: content-type,lightstep-access-token

Response headers

status: 200
date: Thu, 23 May 2019 14:20:09 GMT
access-control-allow-credentials: true
access-control-allow-origin: *
access-control-allow-headers: LightStep-Access-Token, Content-Type
content-length: 0
access-control-allow-methods: POST

POST
H2 200 reports Show response
collector-medium.lightstep.com/api/v0/ 127 B
325 B 301ms
300ms XHR
application/json 18.235.247.199
Amazon.com

General

Check archive.org

Show headers Download Go to

Full URL: https://collector-medium.lightstep.com/api/v0/reports
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
Server: 18.235.247.199 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS: ec2-18-235-247-199.compute-1.amazonaws.com
Software: /
Resource Hash: 22f2605d6b0b55a3a17b6df4f559d8e9a9530b7070243bdf844940c0b0e15b9d

Request headers

User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36
Referer: https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506
Origin: https://heartbeat.fritz.ai
LightStep-Access-Token: ce5be895bef60919541332990ac9fef2
Content-Type: application/json

Response headers

date: Thu, 23 May 2019 14:20:10 GMT
status: 200
access-control-allow-methods: POST
content-type: application/json
access-control-allow-origin: *
access-control-allow-credentials: true
access-control-allow-headers: LightStep-Access-Token, Content-Type
content-length: 127

GET
H/1.1 200
OK /
srv-2019-05-23-14.pixel.parsely.com/event/ 43 B
385 B 507ms
101ms Image
image/gif 52.0.186.222
Amazon.com

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://srv-2019-05-23-14.pixel.parsely.com/event/?rand=1558621214365&plid=25163092&idsite=medium.com&url=https%3A%2F%2Fheartbeat.fritz.ai%2Fintroduction-to-learning-rates-in-machine-learning-6ed685c16506&urlref=&screen=1600x1200%7C1600x1200%7C24&data=%7B%7D&sid=1&surl=https%3A%2F%2Fheartbeat.fritz.ai%2Fintroduction-to-learning-rates-in-machine-learning-6ed685c16506&sref=&sts=1558621214365&slts=0&date=Thu+May+23+2019+14%3A20%3A14+GMT%2B0000+(Coordinated+Universal+Time)&action=heartbeat&inc=5&tt=4900&pvid=79875613&u=pid%3D5d9952b46b47340479b1a49b78138919
Protocol: HTTP/1.1
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
Server: 52.0.186.222 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS: ec2-52-0-186-222.compute-1.amazonaws.com
Software: nginx /
Resource Hash: cf4724b2f736ed1a0ae6bc28f1ead963d9cd2c1fd87b6ef32e7799fc1c5c8bda

Request headers

Referer: https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36

Response headers

Date: Thu, 23 May 2019 14:20:14 GMT
Last-Modified: Mon, 28 Sep 1970 06:00:00 GMT
Server: nginx
Connection: keep-alive
Content-Type: image/gif
Content-Length: 43
P3P: CP="CUR ADM OUR NOR STA NID"

Verdicts & Comments Add Verdict or Comment

25 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.

13 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
heartbeat.fritz.ai/	1970-01-19 01:07:06	Name: tz Value: 0
heartbeat.fritz.ai/	1970-01-19 01:07:06	Name: lightstep_session_id Value: 868bec04b261fb7e
.fritz.ai/	1970-01-19 10:26:25	Name: _parsely_visitor Value: {%22id%22:%22pid=5d9952b46b47340479b1a49b78138919%22%2C%22session_count%22:1%2C%22last_session_ts%22:1558621203860}
heartbeat.fritz.ai/	1970-01-19 09:42:37	Name: sid Value: 1:0WxSXLX6gW4ZzgtLp6ncef/THW9C096VU7xD3/KSw51JuXqhhuymte1ZfxxiP5mV
heartbeat.fritz.ai/	1970-01-19 01:07:06	Name: lightstep_guid/medium-web Value: fb9cafc8b9a8403
.fritz.ai/	1970-01-19 00:57:03	Name: _parsely_session Value: {%22sid%22:1%2C%22surl%22:%22https://heartbeat.fritz.ai/introduction-to-learning-rates-in-machine-learning-6ed685c16506?gi=b4dd46c54647%22%2C%22sref%22:%22%22%2C%22sts%22:1558621203860%2C%22slts%22:0}
.fritz.ai/	1970-01-19 00:58:27	Name: _gid Value: GA1.2.34566638.1558621204
heartbeat.fritz.ai/	1970-01-19 01:07:06	Name: pr Value: 1
.fritz.ai/	1970-01-19 00:57:01	Name: _gat_tracker0 Value: 1
.fritz.ai/	1970-01-19 00:57:01	Name: _gat Value: 1
.fritz.ai/	1970-01-19 18:28:13	Name: _ga Value: GA1.2.1911129652.1558621204
heartbeat.fritz.ai/	1970-01-19 01:07:06	Name: sz Value: 1585
heartbeat.fritz.ai/	1970-01-19 09:42:37	Name: uid Value: lo_4ZN7i1n48JAY

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
Content-Security-Policy	default-src 'self'; connect-src https://localhost https://.instapaper.com https://.stripe.com https://glyph.medium.com https://.paypal.com https://getpocket.com https://heartbeat.fritz.ai https://.heartbeat.fritz.ai https://.medium.com https://medium.com https://.medium.com https://.algolia.net https://cdn-static-1.medium.com https://dnqgz544uhbo8.cloudfront.net https://cdn-videos-1.medium.com https://cdn-audio-1.medium.com https://.lightstep.com https://.branch.io https://app.zencoder.com 'self'; font-src data: https://.amazonaws.com https://.medium.com https://glyph.medium.com https://medium.com https://.gstatic.com https://dnqgz544uhbo8.cloudfront.net https://use.typekit.net https://cdn-static-1.medium.com 'self'; frame-src chromenull: https: webviewprogressproxy: medium: 'self'; img-src blob: data: https: 'self'; media-src https://.cdn.vine.co https://d1fcbxp97j4nb2.cloudfront.net https://d262ilb51hltx0.cloudfront.net https://.medium.com https://gomiro.medium.com https://miro.medium.com https://pbs.twimg.com 'self' blob:; object-src 'self'; script-src 'unsafe-eval' 'unsafe-inline' about: https: 'self'; style-src 'unsafe-inline' data: https: 'self'; report-uri https://csp.medium.com
X-Content-Type-Options	nosniff
X-Frame-Options	sameorigin
X-Xss-Protection	1; mode=block

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.

api2.branch.io
app.link
cdn-images-1.medium.com
cdn-static-1.medium.com
cdn.branch.io
collector-medium.lightstep.com
d1z2jf7jlzjs58.cloudfront.net
glyph.medium.com
heartbeat.fritz.ai
i.embed.ly
medium.com
srv-2019-05-23-14.pixel.parsely.com
stats.g.doubleclick.net
www.google-analytics.com
104.16.90.50
13.35.253.12
13.35.254.37
18.235.247.199
2600:9000:200d:2e00:19:9934:6a80:93a1
2600:9000:200d:6a00:11:f728:3040:93a1
2606:4700::6810:7691
2606:4700::6810:7791
2606:4700::6810:787f
2606:4700::6810:797f
2a00:1450:4001:817::200e
2a00:1450:400c:c08::9d
34.202.247.9
52.0.186.222
52.5.181.79
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heartbeat.fritz.ai Open in urlscan Pro 52.5.181.79 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page URL History Show full URLs

Detected technologies

Page Statistics

63 Requests

100 %HTTPS

53 %IPv6

10 Domains

14 Subdomains

16 IPs

3 Countries

1356 kBTransfer

3367 kBSize

13 Cookies

18 Outgoing links

Page URL History

Redirected requests

63 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 4 data transactions

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Redirect headers

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heartbeat.fritz.ai Open in urlscan Pro
52.5.181.79 Public Scan

Screenshot
Live screenshot

Full Image

63
Requests

100 %
HTTPS

53 %
IPv6

10
Domains

14
Subdomains

16
IPs

3
Countries

1356 kB
Transfer

3367 kB
Size

13
Cookies

63 HTTP transactions
4 data transactions