github.io
GitHub Pages | Websites for you and your projects, hosted directly from your GitHub repository. Just edit, push, and your changes are live.
The site runs on Varnish, Fastly, GitHub Pages and 2 other technologies. Its email security grade is F. Its SSL certificate is issued by Let's Encrypt and is valid for 50 more days.
- Domain age
- —
- Technologies
- 5
- Email security
- F
- SSL days left
- 50
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 185.199.110.153 | 1548 |
| A | 185.199.111.153 | 1548 |
| A | 185.199.108.153 | 1548 |
| A | 185.199.109.153 | 1548 |
| NS | dns1.p05.nsone.net | 877 |
| NS | dns2.p05.nsone.net | 877 |
| NS | dns3.p05.nsone.net | 877 |
| NS | dns4.p05.nsone.net | 877 |
| NS | ns-1339.awsdns-39.org | 877 |
| NS | ns-1622.awsdns-10.co.uk | 877 |
| NS | ns-393.awsdns-49.com | 877 |
| NS | ns-692.awsdns-22.net | 877 |
| CAA | issue 0 digicert.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 | v=spf1 a -all | 3600 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YR1, Let's Encrypt |
| Expires | December 30, 2026 |
| Days remaining | 50 |
| Protocol | TLSv1.3 |
| Names | *.github.com, *.github.io, *.githubusercontent.com, github.com, github.io, githubusercontent.com |
Email security
- badNo DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain.
- warnNo DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
- warnNo MX records: this domain cannot receive email.
- 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 rejected (hard fail).
Homepage metadata
| Title | GitHub Pages | Websites for you and your projects, hosted directly from your GitHub repository. Just edit, push, and your changes are live. |
|---|---|
| Description | Websites for you and your projects, hosted directly from your GitHub repository. Just edit, push, and your changes are live. |
| Language | en |
| Canonical | https://pages.github.com/ |
| Structured data | WebSite |
| Indexable | Yes |
| Word count | 681 |
About github.io
What technology does github.io use?
We detected 5 technologies on github.io, including Varnish, Fastly, GitHub Pages, jQuery, Jekyll.
Does github.io protect its email with SPF and DMARC?
github.io scores 40/100 (grade F) for email security. No DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain. No DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
What are the name servers of github.io?
github.io uses dns1.p05.nsone.net, dns2.p05.nsone.net, dns3.p05.nsone.net, dns4.p05.nsone.net, ns-1339.awsdns-39.org, ns-1622.awsdns-10.co.uk, ns-393.awsdns-49.com, ns-692.awsdns-22.net.