pressbooks.pub

Observed Jul 18, 2026, 13:15 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.

Guarded by a firewall

Runs onCloudflare

Secured byGoogle Trust Services

Registered withTucows Domains Inc.

tranco_20k

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

INFRASTRUCTURE MAPwhat pressbooks.pub actually stands on - every host below is a signed observation

pressbooks.pub

A / AAAA

104.18.42.171

Cloudflareserves the site

ns-117.awsdns-14.comns-1181.awsdns-19.orgns-1747.awsdns-26.co.ukns-528.awsdns-02.net

awsdns-14.com + awsdns-19.org + moreanswers its DNS

TLS

pressbooks.pub

Google Trust Servicesissued its certificate

DNS Records

A 1

104.18.42.171

NS 4

ns-117.awsdns-14.com
ns-1181.awsdns-19.org
ns-1747.awsdns-26.co.uk
ns-528.awsdns-02.net

SOA 1

ns-528.awsdns-02.net awsdns-hostmaster.amazon.com

CAA 7

issue "amazon.com"
issue "amazonaws.com"
issue "amazontrust.com"
issue "awstrust.com"
issue "pki.goog"
issuewild "amazon.com"
issuewild "pki.goog"

TLS Certificates (3)

Common Name	Issuer	Expires
`pressbooks.pub`	C=US, O=Google Trust Services, CN=WE1	Wed, 30 Sep 2026 00:05:05 +0000
`WE1`	C=US, O=Google Trust Services LLC, CN=GTS Root R4	Tue, 20 Feb 2029 14:00:00 +0000
`GTS Root R4`	C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA	Fri, 28 Jan 2028 00:00:42 +0000

Subdomains (0)

None observed.

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 DomainDrift observes and signs for pressbooks.pub. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 69d61954-8b64-43a7-83e5-78e5348095c0
Output Hash: 5fffff2757ef08a92843ec0ba06fab61d8c8fa0c540f8939e1d3d9e93e28485d
Signature: ed25519:a26af456f3236f11fbb6a6ed59fac9c02577c89748b3802d2fb4740f67f7906c84d40546181f775d914fb6700af69acd151b654423abd084ad75ffd73c127606
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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