ridibooks.com

Observed Jul 18, 2026, 12:52 UTC (4d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.

Verify this receipt yourself + Watch this domain

Guarded by a firewall

Runs onCloudflare

Email byGoogle Workspace

Secured byGoogle Trust Services

Registered withAmazon Registrar, Inc.

Also usesFacebook/MetaGoogle Search Console

tranco_10k

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

INFRASTRUCTURE MAPwhat ridibooks.com actually stands on - every host below is a signed observation

ridibooks.com

A / AAAA

104.17.219.15104.18.81.2

Cloudflareserves the site

sid.ns.cloudflare.comdawn.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx2.googlemail.com+1 more

Google Workspacereceives its email

TLS

ridibooks.com

Google Trust Servicesissued its certificate

DNS Records

A 2

104.17.219.15
104.18.81.2

MX 5

1aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com
10aspmx2.googlemail.com
10aspmx3.googlemail.com

TXT 6

facebook-domain-verification=uv6dik21d2b3kmtd6aap9di1313lby
google-site-verification=2m-BWvQ5oUwuwf0OmOcEwaZLzVVpTykh1N-HOEMQq0E
google-site-verification=Lgb4_XyZcMGarzde6kSL8VYY4sSOyhuEAPX153tJPUU
google-site-verification=azvWqpw8keGzOPE699W5xunm1mdYyY-UitLG5j17dXI
v=spf1 a mx include:mailgun.org include:mail.zendesk.com ip4:115.68.53.45 ip4:23.253.182.73 ip4:143.55.235.162 ip4:23.253.183.26 ip4:159.135.238.110 ip4:159.135.230.172 ip4:23.253.182.28 ip4:143.55.235.158 ip4:23.253.182.59 ip4:198.244.49.247 -all
v=DMARC1; p=reject; pct=100; rua=mailto:3ab108766b014980b16cca2f3afd2565@dmarc-reports.cloudflare.net,mailto:postmaster@ridi.com

NS 2

sid.ns.cloudflare.com
dawn.ns.cloudflare.com

SOA 1

dawn.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (3)

Common Name	Issuer	Expires
`ridibooks.com`	C=US, O=Google Trust Services, CN=WE1	Mon, 12 Oct 2026 03:10:10 +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 ridibooks.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_ca21b258b7dca8e9
Output Hash: 38e0f4e1508430df5f713c984b4cec5c26f3945eb159af665ad956ffcaa1b233
Signature: ed25519:fa9a6ce23f9c759edcc52b49f057f654fde108ff8c422fd4576fc781de616c884298935227f8cb650d6e17280c1405625156994e3002c5b1a56e6ac941ed1d04
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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