github.com
GitHub · Change is constant. GitHub keeps you ahead. · GitHub · GitHub
github.com is registered with MarkMonitor Inc. since October 9, 2007 (19.1 years). The registration expires on October 9, 2028. The site runs on Turbo, Contentful, GitHub Pages and 2 other technologies. Its email security grade is C. Its SSL certificate is issued by Sectigo Limited and is valid for 79 more days.
- Domain age
- 19.1 yrs
- Technologies
- 5
- Email security
- C
- SSL days left
- 79
Registration
| Registrar | MarkMonitor Inc. |
|---|---|
| IANA ID | 292 |
| Registered | October 9, 2007 |
| Expires | October 9, 2028 |
| Updated | September 7, 2026 |
| Status | client delete prohibited, client transfer prohibited, client update prohibited |
| Name servers | dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net, ns-1283.awsdns-32.org, ns-1707.awsdns-21.co.uk, ns-421.awsdns-52.com, ns-520.awsdns-01.net |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 140.82.121.3 | 6 |
| MX | github-com.mail.protection.outlook.com 0 | 173 |
| NS | dns1.p08.nsone.net | 1342 |
| NS | dns2.p08.nsone.net | 1342 |
| NS | dns3.p08.nsone.net | 1342 |
| NS | dns4.p08.nsone.net | 1342 |
| NS | ns-1283.awsdns-32.org | 1342 |
| NS | ns-1707.awsdns-21.co.uk | 1342 |
| NS | ns-421.awsdns-52.com | 1342 |
| NS | ns-520.awsdns-01.net | 1342 |
| CAA | issue 0 digicert.com | 3600 |
| CAA | issue 0 globalsign.com | 3600 |
| CAA | issue 0 letsencrypt.org | 3600 |
| CAA | issue 0 sectigo.com | 3600 |
| CAA | issuewild 0 digicert.com | 3600 |
| CAA | issuewild 0 letsencrypt.org | 3600 |
| CAA | issuewild 0 sectigo.com | 3600 |
| TXT | 00Dd0000000hHE0=1TBKg000000TN2r | 138 |
| TXT | MS=6BF03E6AF5CB689E315FB6199603BABF2C88D805 | 138 |
| TXT | MS=ms44452932 | 138 |
| TXT | MS=ms58704441 | 138 |
| TXT | TAILSCALE-xOzoDvFUzZr5YYVCQFuD | 138 |
| TXT | adobe-idp-site-verification=b92c9e999aef825edc36e0a3d847d2dbad5b2fc0e05c79ddd7a16139b48ecf4b | 138 |
| TXT | anthropic-domain-verification-4az7qn=if8YWuRRqwLycGJDooumzHtxm | 138 |
| TXT | apple-domain-verification=RyQhdzTl6Z6x8ZP4 | 138 |
| TXT | atlassian-domain-verification=jjgw98AKv2aeoYFxiL/VFaoyPkn3undEssTRuMg6C/3Fp/iqhkV4HVV7WjYlVeF8 | 138 |
| TXT | calendly-site-verification=at0DQARi7IZvJtXQAWhMqpmIzpvoBNF7aam5VKKxP | 138 |
| TXT | cursor-domain-verification-gtfwmt=1rfLOtiTngX5QSxD5HvNKTvm3 | 138 |
| TXT | docusign=087098e3-3d46-47b7-9b4e-8a23028154cd | 138 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | GB, Sectigo Public Server Authentication CA DV E36, Sectigo Limited |
| Expires | January 28, 2027 |
| Days remaining | 79 |
| Protocol | TLSv1.3 |
| Names | github.com, www.github.com |
Email security
- warnSPF uses 10 of the 10 allowed DNS lookups. Adding another service may break it.
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- goodSPF record found.
- goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
- goodDMARC policy is quarantine: failing mail goes to spam. Move to p=reject for full protection.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- goodDKIM keys found (selector: google, selector1, k1, k2, s1, s2).
- good1 MX record(s) found. Mail is handled by Microsoft 365.
Homepage metadata
| Title | GitHub · Change is constant. GitHub keeps you ahead. · GitHub · GitHub |
|---|---|
| Description | Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity. |
| Language | en |
| Canonical | https://github.com |
| Indexable | Yes |
| Word count | 1144 |
About github.com
Who is the registrar of github.com?
github.com is registered with MarkMonitor Inc. (IANA ID 292).
When does github.com expire?
The current registration of github.com expires on October 9, 2028. It was first registered on October 9, 2007.
What technology does github.com use?
We detected 5 technologies on github.com, including Contentful, GitHub Pages, Turbo, Content Security Policy, HSTS.
Does github.com protect its email with SPF and DMARC?
github.com scores 77/100 (grade C) for email security. SPF uses 10 of the 10 allowed DNS lookups. Adding another service may break it. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
What are the name servers of github.com?
github.com uses dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net, ns-1283.awsdns-32.org, ns-1707.awsdns-21.co.uk, ns-421.awsdns-52.com, ns-520.awsdns-01.net.