sgmail.github.com - dns.ninja
sgmail.github.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 167.89.125.30 | ||||||
| MX | mx.sendgrid.net ⭐ | ||||||
| TXT | v=spf1 ip4:192.30.252.0/22 include:sendgrid.net ~all | ||||||
github.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 140.82.121.3 | ||||||
| NS | ns-1707.awsdns-21.co.uk ⭐ | ||||||
| NS | dns1.p08.nsone.net | ||||||
| NS | dns2.p08.nsone.net | ||||||
| NS | dns3.p08.nsone.net | ||||||
| NS | dns4.p08.nsone.net | ||||||
| NS | ns-1283.awsdns-32.org | ||||||
| NS | ns-421.awsdns-52.com | ||||||
| NS | ns-520.awsdns-01.net | ||||||
| MX | github-com.mail.protection.outlook.com ⭐ | ||||||
| TXT | 00Dd0000000hHE0=1TBKg000000TN2r | ||||||
| TXT | MS=6BF03E6AF5CB689E315FB6199603BABF2C88D805 | ||||||
| TXT | MS=ms44452932 | ||||||
| TXT | MS=ms58704441 | ||||||
| TXT | TAILSCALE-xOzoDvFUzZr5YYVCQFuD | ||||||
| TXT | adobe-idp-site-verification=b92c9e999aef825edc36e0a3d847d2dbad5b2fc0e05c79ddd... | ||||||
| TXT | anthropic-domain-verification-4az7qn=if8YWuRRqwLycGJDooumzHtxm | ||||||
| TXT | apple-domain-verification=RyQhdzTl6Z6x8ZP4 | ||||||
| TXT | atlassian-domain-verification=jjgw98AKv2aeoYFxiL/VFaoyPkn3undEssTRuMg6C/3Fp/i... | ||||||
| TXT | calendly-site-verification=at0DQARi7IZvJtXQAWhMqpmIzpvoBNF7aam5VKKxP | ||||||
| TXT | docusign=087098e3-3d46-47b7-9b4e-8a23028154cd | ||||||
| TXT | facebook-domain-verification=39xu4jzl7roi7x0n93ldkxjiaarx50 | ||||||
| TXT | google-site-verification=82Le34Flgtd15ojYhHlGF_6g72muSjamlMVThBOJpks | ||||||
| TXT | google-site-verification=UTM-3akMgubp6tQtgEuAkYNYLyYAvpTnnSrDMWoDR3o | ||||||
| TXT | jamf-site-verification=XtaPNIYghF_e_xRDI8CjgQ | ||||||
| TXT | krisp-domain-verification=ZlyiK7XLhnaoUQb2hpak1PLY7dFkl1WE | ||||||
| TXT | loom-site-verification=f3787154f1154b7880e720a511ea664d | ||||||
| TXT | miro-verification=d2e174fdb00c71e0bcf58f8e58c3da2dd80dcfa9 | ||||||
| TXT | serval-domain-verification-ydryhj=qbkiEakpwEpTvHh5fIiCqtaue | ||||||
| TXT | shopify-verification-code=t1YPwcmvnxZyBycaCpk1MPyWoFs72o | ||||||
| TXT | stripe-verification=f88ef17321660a01bab1660454192e014defa29ba7b8de9633c69d6b4... | ||||||
| TXT | v=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblo... | ||||||
| SOA | ns-1707.awsdns-21.co.ukawsdns-hostmaster@amazon.com serial=1 | ||||||
rank #10 globally
rank #10 in the tld
🔒 HSTS Preload (+subdomains)
Semrush Rank:#148 Keywords:7,571,859 Traffic:15,919,465/mo
WOT: SAFE (79/100)
📈 Tranco rank: #31
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.
Subdomains
o4.sgmail.github.com |
o8.sgmail.github.com |
o9.sgmail.github.com |
o11.sgmail.github.com |
o7.sgmail.github.com |
o1.sgmail.github.com |
o3.sgmail.github.com |
o6.sgmail.github.com |
o5.sgmail.github.com |
o2.sgmail.github.com |
o10.sgmail.github.com |
Same first word
DNS History
2 records (2 active, 0 former)
●MXmx.sendgrid.net2016-12-28 → 2026-07-23 · 2 obs
● 2026-07-23 07:03:56
●A167.89.125.302016-12-28 → 2026-07-23 · 2 obs
● 2026-07-23 07:03:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, a.gtld-servers.net, f.gtld-servers.net, k.gtld-servers.net... | - |
| github.com | ns-520.awsdns-01.net, ns-421.awsdns-52.com, ns-1707.awsdns-21.co.uk, ns-1283.awsdns-32.org... | 2 records |
✅ Authoritative Response
Server:198.51.45.72
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: 4488ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 167.89.125.30 |
| MX | 1 | mx.sendgrid.net (pri: 10) |
| TXT | 1 | v=spf1 ip4:192.30.252.0/22 include:sendg |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-421.awsdns-52.com, ns-421.awsdns-52.com)
Analysis
Hierarchy
o4.sgmail.github.com, o8.sgmail.github.com, o9.sgmail.github.com, o11.sgmail.github.com, o7.sgmail.github.com and a few other host names are all children of sgmail.github.com.
IP Addresses
sgmail.github.com resolves to just one IP address, 167.89.125.30.
Mail Servers
The sole mail server for sgmail.github.com is mx.sendgrid.net.