releaseradar.github.com - robtex.com

releaseradar.github.com

CNAMEgithub.com
DNSSEC⚠️ Not signed
A140.82.116.4🇺🇸 GITHUB140.82.116.0/24 GitHub
PTRlb-140-82-116-4-sea.github.com
NSns-1707.awsdns-21.co.uk ⭐
A2600:9000:5306:ab00::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront
PTRns-1707.awsdns-21.co.uk
A205.251.198.171🇺🇸 Amazon205.251.198.0/24 prefix
PTRns-1707.awsdns-21.co.uk
NSdns1.p08.nsone.net
A2620:4d:4000:6259:7:8:0:1🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48
PTRns8.demysdns.com
PTRdns1.p08.nsone.net
A198.51.44.8🇺🇸 NSONE198.51.44.0/24 198.51.44.0
PTRns8.demysdns.com
PTRdns1.p08.nsone.net
NSdns2.p08.nsone.net
A2a00:edc0:6259:7:8::2🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2
PTRdns2.p08.nsone.net
A198.51.45.8🇺🇸 NSONE198.51.45.0/24 198.51.45.0
PTRdns2.p08.nsone.net
NSdns3.p08.nsone.net
A2620:4d:4000:6259:7:8:0:3🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48
PTRdns3.p08.nsone.net
A198.51.44.72🇺🇸 NSONE198.51.44.0/24 198.51.44.0
PTRdns3.p08.nsone.net
NSdns4.p08.nsone.net
A2a00:edc0:6259:7:8::4🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2
PTRdns4.p08.nsone.net
A198.51.45.72🇺🇸 NSONE198.51.45.0/24 198.51.45.0
PTRdns4.p08.nsone.net
NSns-1283.awsdns-32.org
A2600:9000:5305:300::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront
PTRns-1283.awsdns-32.org
A205.251.197.3🇺🇸 Amazon205.251.197.0/24 prefix
PTRns-1283.awsdns-32.org
NSns-421.awsdns-52.com
A2600:9000:5301:a500::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront
PTRns-421.awsdns-52.com
A205.251.193.165🇺🇸 Amazon205.251.193.0/24 prefix
PTRns-421.awsdns-52.com
NSns-520.awsdns-01.net
A2600:9000:5302:800::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront
PTRns-520.awsdns-01.net
A205.251.194.8🇺🇸 Amazon205.251.194.0/24 prefix
PTRns-520.awsdns-01.net
MXgithub-com.mail.protection.outlook.com ⭐
A2a01:111:f403:c92c::1🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-dm6pr03cu00401.inbound.protection.outlook.com
A2a01:111:f403:c931::1🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-sa9pr03cu00201.inbound.protection.outlook.com
A2a01:111:f403:f802::1🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-sj2pr05cu00101.inbound.protection.outlook.com
A2a01:111:f403:f90b::🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-bn6pr04cu00100.inbound.protection.outlook.com
A52.101.9.0🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-bl2pr02cu00100.inbound.protection.outlook.com
A52.101.9.14🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-bl0pr03cu00206.inbound.protection.outlook.com
A52.101.10.14🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-bn6pr04cu00206.inbound.protection.outlook.com
A52.101.40.0🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-cy5pr03cu00300.inbound.protection.outlook.com
TXTMS=6BF03E6AF5CB689E315FB6199603BABF2C88D805
TXTMS=ms44452932
TXTMS=ms58704441
TXTTAILSCALE-xOzoDvFUzZr5YYVCQFuD
TXTadobe-idp-site-verification=b92c9e999aef825edc36e0a3d847d2dbad5b2fc0e05c79ddd...
TXTapple-domain-verification=RyQhdzTl6Z6x8ZP4
TXTatlassian-domain-verification=jjgw98AKv2aeoYFxiL/VFaoyPkn3undEssTRuMg6C/3Fp/i...
TXTcalendly-site-verification=at0DQARi7IZvJtXQAWhMqpmIzpvoBNF7aam5VKKxP
TXTdocusign=087098e3-3d46-47b7-9b4e-8a23028154cd
TXTfacebook-domain-verification=39xu4jzl7roi7x0n93ldkxjiaarx50
TXTgoogle-site-verification=82Le34Flgtd15ojYhHlGF_6g72muSjamlMVThBOJpks
TXTgoogle-site-verification=UTM-3akMgubp6tQtgEuAkYNYLyYAvpTnnSrDMWoDR3o
TXTjamf-site-verification=XtaPNIYghF_e_xRDI8CjgQ
TXTkrisp-domain-verification=ZlyiK7XLhnaoUQb2hpak1PLY7dFkl1WE
TXTloom-site-verification=f3787154f1154b7880e720a511ea664d
TXTmiro-verification=d2e174fdb00c71e0bcf58f8e58c3da2dd80dcfa9
TXTshopify-verification-code=t1YPwcmvnxZyBycaCpk1MPyWoFs72o
TXTstripe-verification=f88ef17321660a01bab1660454192e014defa29ba7b8de9633c69d6b4...
TXTv=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblo...
SOAns-1707.awsdns-21.co.ukawsdns-hostmaster@amazon.com serial=1

github.com

DNSSEC⚠️ Not signed
A140.82.116.4🇺🇸 GITHUB140.82.116.0/24 GitHub
NSns-1707.awsdns-21.co.uk ⭐
NSdns1.p08.nsone.net
NSdns2.p08.nsone.net
NSdns3.p08.nsone.net
NSdns4.p08.nsone.net
NSns-1283.awsdns-32.org
NSns-421.awsdns-52.com
NSns-520.awsdns-01.net
MXgithub-com.mail.protection.outlook.com ⭐
TXTMS=6BF03E6AF5CB689E315FB6199603BABF2C88D805
TXTMS=ms44452932
TXTMS=ms58704441
TXTTAILSCALE-xOzoDvFUzZr5YYVCQFuD
TXTadobe-idp-site-verification=b92c9e999aef825edc36e0a3d847d2dbad5b2fc0e05c79ddd...
TXTapple-domain-verification=RyQhdzTl6Z6x8ZP4
TXTatlassian-domain-verification=jjgw98AKv2aeoYFxiL/VFaoyPkn3undEssTRuMg6C/3Fp/i...
TXTcalendly-site-verification=at0DQARi7IZvJtXQAWhMqpmIzpvoBNF7aam5VKKxP
TXTdocusign=087098e3-3d46-47b7-9b4e-8a23028154cd
TXTfacebook-domain-verification=39xu4jzl7roi7x0n93ldkxjiaarx50
TXTgoogle-site-verification=82Le34Flgtd15ojYhHlGF_6g72muSjamlMVThBOJpks
TXTgoogle-site-verification=UTM-3akMgubp6tQtgEuAkYNYLyYAvpTnnSrDMWoDR3o
TXTjamf-site-verification=XtaPNIYghF_e_xRDI8CjgQ
TXTkrisp-domain-verification=ZlyiK7XLhnaoUQb2hpak1PLY7dFkl1WE
TXTloom-site-verification=f3787154f1154b7880e720a511ea664d
TXTmiro-verification=d2e174fdb00c71e0bcf58f8e58c3da2dd80dcfa9
TXTshopify-verification-code=t1YPwcmvnxZyBycaCpk1MPyWoFs72o
TXTstripe-verification=f88ef17321660a01bab1660454192e014defa29ba7b8de9633c69d6b4...
TXTv=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblo...
SOAns-1707.awsdns-21.co.ukawsdns-hostmaster@amazon.com serial=1
WOT: SAFE (94/100)
rank #10 globally
rank #10 in the tld
This domain name "github.com" refers to the official website of GitHub, a platform primarily used by software developers for collaboration and version control. GitHub provides hosting for software development and a community of developers where they can review code, manage projects, and build software alongside millions of other developers. It is one of the largest and most advanced development platforms in the world.🔒 HSTS Preload (+subdomains)
WOT: SAFE (94/100)
📈 Tranco rank: #29
github.com - Tranco Rank (30d: →±0)28293031Mar 1Mar 11Mar 21Mar 31Apr 10Rank#29#29

GitHub is the world's largest source code hosting platform and developer community, founded in 2008 and acquired by Microsoft in 2018 for $7.5 billion. With over 100 million developers and 400 million repositories, GitHub has become the central hub for open-source development and enterprise software collaboration.

The platform pioneered social coding features like pull requests, issues, and forking that have become industry standards. GitHub hosts the source code for countless major projects including Linux, React, TensorFlow, and VS Code. The company also provides GitHub Actions for CI/CD, GitHub Pages for static hosting, Copilot for AI-assisted coding, and comprehensive security scanning.

GitHub's infrastructure runs on Microsoft Azure, having migrated from its original Rackspace-based setup. The platform uses a globally distributed architecture with multiple data centers for redundancy. GitHub experienced a famous 2018 DDoS attack that peaked at 1.35 Tbps, the largest recorded at that time, which they mitigated using Akamai Prolexic.

DNS for github.com is managed through multiple providers for resilience, with authoritative nameservers including dns1-4.p08.nsone.net (NS1). The site uses advanced DNS configurations including DNSSEC and CAA records for certificate authority authorization. GitHub's global CDN delivers assets from edge locations worldwide for optimal performance.

DNS History

1 record (1 active, 0 former)

CNAMEgithub.com
●CNAMEgithub.com2026-03-02 → 2026-04-12 · 2 obs
● 2026-03-02 10:19:44
● 2026-04-12 06:37:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comk.gtld-servers.net, g.gtld-servers.net, e.gtld-servers.net, c.gtld-servers.net...-
github.comns-520.awsdns-01.net, ns-421.awsdns-52.com, ns-1707.awsdns-21.co.uk, ns-1283.awsdns-32.org...1 record

✅ Authoritative Response

Server:205.251.197.3

NS records: ns-520.awsdns-01.net, ns-421.awsdns-52.com, ns-1707.awsdns-21.co.uk, ns-1283.awsdns-32.org, dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for github.com (unsigned zone)

⏱️ Timing

Total: 546ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1github.com

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-421.awsdns-52.com)

Analysis

IP Addresses

releaseradar.github.com resolves to a single IP: 140.82.116.4.

Other host names, for instance, lb-140-82-116-4-sea.github.com and github.com share IP numbers with releaseradar.github.com.

Name Servers

releaseradar.github.com is delegated to eight name servers: ns-421.awsdns-52.com, ns-520.awsdns-01.net, ns-1283.awsdns-32.org, dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net and ns-1707.awsdns-21.co.uk.

releaseradar.github.com shares some name servers with other domains, for example smrehomes.com, fonts.adobe.com, ermsjournal.com, laureysyum.com and bobcalverley.com.

these name servers are often used with ns01.squarespacedns.com, ns02.squarespacedns.com, ns03.squarespacedns.com, ns04.squarespacedns.com, dns1.p01.nsone.net, connect1.squarespacedns.com, connect2.squarespacedns.com, dns2.p01.nsone.net, dns3.p01.nsone.net and dns4.p01.nsone.net.

Host names with two IP numbers:

ns-421.awsdns-52.com points to 2600:9000:5301:a500::1 and 205.251.193.165

ns-520.awsdns-01.net points to 2600:9000:5302:800::1 and 205.251.194.8

ns-1283.awsdns-32.org points to 2600:9000:5305:300::1 and 205.251.197.3

dns1.p08.nsone.net points to 2620:4d:4000:6259:7:8:0:1 and 198.51.44.8

dns2.p08.nsone.net points to 2a00:edc0:6259:7:8::2 and 198.51.45.8

dns3.p08.nsone.net points to 2620:4d:4000:6259:7:8:0:3 and 198.51.44.72

dns4.p08.nsone.net points to 2a00:edc0:6259:7:8::4 and 198.51.45.72

ns-1707.awsdns-21.co.uk points to 2600:9000:5306:ab00::1 and 205.251.198.171

Mail Servers

releaseradar.github.com is handled by a single mail server, github-com.mail.protection.outlook.com.

releaseradar.github.com shares the mail server setup with other domains, for example bouh.net, githubsupport.com, support.github.com, github.com and github.partners.

Host github-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c92c::1, 2a01:111:f403:c931::1, 2a01:111:f403:f802::1, 2a01:111:f403:f90b::, 52.101.9.0, 52.101.9.14, 52.101.10.14 and 52.101.40.0.