certainly.com

Observed Jul 18, 2026, 13:15 UTC (20h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onFastly

Email byGoogle Workspace

Secured byCertainly

Registered withMarkMonitor Inc.

Also usesGoogle Search Console

IPv6 · 1 subdomain · tranco_20k

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

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

certainly.com

A / AAAA

151.101.131.4151.101.195.4151.101.3.4151.101.67.4+4 more

Fastlyserves the site

edns1.ultradns.comedns1.ultradns.netcherry.fastlydns.comcherry.fastlydns.dev+4 more

ultradns.com + ultradns.net + moreanswers its DNS

aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

www.certainly.com

Certainlyissued its certificate

DNS Records

A 4

151.101.131.4
151.101.195.4
151.101.3.4
151.101.67.4

AAAA 4

2a04:4e42:200::772
2a04:4e42:400::772
2a04:4e42:600::772
2a04:4e42::772

MX 5

10aspmx.l.google.com
20alt1.aspmx.l.google.com
20alt2.aspmx.l.google.com
30alt3.aspmx.l.google.com
30alt4.aspmx.l.google.com

TXT 3

v=spf1 include:_spf.google.com ~all
google-site-verification=LPjXnY9si1h_g4Sy8Yib2Ec63DataD63CWsnB36kfrc
v=DMARC1; p=quarantine; rua=mailto:mailauth-reports@certainly.com,mailto:dmarc_agg@vali.email;

NS 8

edns1.ultradns.com
edns1.ultradns.net
cherry.fastlydns.com
cherry.fastlydns.dev
cherry.fastlydns.net
cherry.fastlydns.org
ns-cloud-b1.googledomains.com
ns-cloud-b2.googledomains.com

SOA 1

edns1.ultradns.com hostmaster.fastly.com

CAA 2

issue "certainly.com"
issue "letsencrypt.org"

TLS Certificates (2)

Common Name	Issuer	Expires
`www.certainly.com`	C=US, O=Certainly, CN=Certainly Intermediate R1	Mon, 17 Aug 2026 09:26:53 +0000
`Certainly Intermediate R1`	C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Root Certificate Authority - G2	Mon, 21 Jun 2032 23:59:59 +0000

Subdomains (1)

www.certainly.com

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 certainly.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: b582d35d-f657-4cd8-a23a-a2d09b023c4f
Output Hash: da7575ff54278f4393a4c0eba9a7b5441d4b87fe83640e887aa07434eb80ca2b
Signature: ed25519:af7ac26cdaa72eafd511aaf36031b71ae8a864567def8fd901153c379d80d3921c562235e0cd7ac774ce1242694feea16254af80b4ba1c8dc63b00f7a96a1707
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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