gitbook.io

Observed 2026-07-12T21:05:12.803Z (3h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Also usesGoogle Search Console

IPv6 · 96 subdomains · tranco_5k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat gitbook.io actually stands on - every host below is a signed observation

gitbook.io

A / AAAA

104.18.40.47172.64.147.2092606:4700:4401::ac40:93d12a06:98c1:310d::6812:282f

Cloudflareserves the site

hugh.ns.cloudflare.comdahlia.ns.cloudflare.com

cloudflare.comanswers its DNS

alt1.aspmx.l.google.comaspmx3.googlemail.comalt2.aspmx.l.google.comaspmx2.googlemail.com+1 more

Google Workspacereceives its email

HTTPS probe

redirect Redirecting (3xx) 302 → https://www.gitbook.com/

HTTP status302

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time511 ms

DNS resolutionNOERROR

Redirect chain

https://www.gitbook.com/

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 2

104.18.40.47
172.64.147.209

AAAA 2

2606:4700:4401::ac40:93d1
2a06:98c1:310d::6812:282f

MX 5

20alt1.aspmx.l.google.com
30aspmx3.googlemail.com
20alt2.aspmx.l.google.com
30aspmx2.googlemail.com
10aspmx.l.google.com

TXT 9

google-site-verification=jOO29_Act4pfhfArsLE_txCdET-NuQQyqp1aAG5-H8s
google-site-verification=9HmRew5KGY83Wzed-UhP71FdHHbV3qoUKP5h_Jenjeo
google-site-verification=mAI4k7A4RaCrAbrsgv7m8w6VPx0irEHUO3bHYEPPwdI
8lncom12tnn1so22eu2gvaoe9q
8277640
v=spf1 a mx include:_spf.google.com include:sendgrid.net include:stspg-customer.com -all
openai-domain-verification=dv-5coTbUFl8eIUWr3rQkpd9lw2
v=DMARC1; p=quarantine; rua=mailto:johan@gitbook.io; ruf=mailto:johan@gitbook.io; fo=1; pct=100
v=DKIM1; (detected)

NS 2

hugh.ns.cloudflare.com
dahlia.ns.cloudflare.com

SOA 1

dahlia.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (0)

None.

Subdomains (96)

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what Connor observes and signs for gitbook.io. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/gitbook.io">
  <img src="https://domaindrift.io/badge/gitbook.io.svg"
       width="300" height="64" alt="Connor signed observations for gitbook.io">
</a>

Ed25519 Receipt

Receipt ID: 6cc4dcf6-fa70-4e11-b55a-0ace8b8ccbab
Output Hash: 17239766e8b1b1cad2f06a251f63104b390ea5ae0a51e66a583b160192938090
Signature: ed25519:59b42499729e1b93e5eb2508c31bb16922732fd7761f013033dcc01884517c7a24796619ccbb6369b0898d3722ad2a692a8e245091d368d145a7790a0ff3190f
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/gitbook.io