Rank #7,460Updated November 10, 2026
gitbooks.io
Page Not Found · GitBook (Legacy)
The site runs on Cloudflare, Google Fonts. Its email security grade is F. Its SSL certificate is issued by Google Trust Services and is valid for 67 more days.
- Domain age
- —
- Technologies
- 2
- Email security
- F
- SSL days left
- 67
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 104.18.41.89 | 300 |
| A | 172.64.146.167 | 300 |
| NS | hugh.ns.cloudflare.com | 86400 |
| NS | dahlia.ns.cloudflare.com | 86400 |
| TXT | f7r5tn8oacfm58aeronglhg4fh | 3600 |
| AAAA | 2606:4700:4403::6812:2959 | 300 |
| AAAA | 2a06:98c1:3105::ac40:92a7 | 300 |
Technology stack
CDN
Fonts
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, WE1, Google Trust Services |
| Expires | January 16, 2027 |
| Days remaining | 67 |
| Protocol | TLSv1.3 |
| Names | gitbooks.io, *.gitbooks.io |
Email security
FScore 15/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- badNo SPF record. Anyone can send email that claims to come from gitbooks.io. Domains that send no email should publish "v=spf1 -all".
- 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).
Homepage metadata
| Title | Page Not Found · GitBook (Legacy) |
|---|---|
| Indexable | Yes |
| Word count | 7 |
About gitbooks.io
What technology does gitbooks.io use?
We detected 2 technologies on gitbooks.io, including Cloudflare, Google Fonts.
Does gitbooks.io protect its email with SPF and DMARC?
gitbooks.io scores 15/100 (grade F) for email security. No SPF record. Anyone can send email that claims to come from gitbooks.io. Domains that send no email should publish "v=spf1 -all". 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.
What are the name servers of gitbooks.io?
gitbooks.io uses hugh.ns.cloudflare.com, dahlia.ns.cloudflare.com.