simperium.com

Observed Jul 21, 2026, 20:07 UTC (5h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onAutomattic

Email byMailgun

Secured byLet's Encrypt

Registered withMarkMonitor Inc.

tranco_5k

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

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

simperium.com

A / AAAA

192.0.84.247

Automatticserves the site

ns1.automattic.comns2.automattic.comns3.automattic.com

automattic.comanswers its DNS

mx2.ams.automattic.commx1.dfw.automattic.com

Mailgunreceives its email

TLS

simperium.com

Let's Encryptissued its certificate

DNS Records

A 1

192.0.84.247

MX 2

10mx2.ams.automattic.com
10mx1.dfw.automattic.com

TXT 2

v=spf1 include:_spf.automattic.com include:mailgun.org ~all
v=DMARC1; p=quarantine; pct=10; rua=mailto:0bqp2jnw@ag.dmarcian.com; ruf=mailto:0bqp2jnw@fr.dmarcian.com;

NS 3

ns1.automattic.com
ns2.automattic.com
ns3.automattic.com

SOA 1

ns1.automattic.com hostmaster.automattic.com

CAA 1

issuewild "letsencrypt.org; validationmethods=dns-01; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/36334489"

TLS Certificates (4)

Common Name	Issuer	Expires
`simperium.com`	C=US, O=Let's Encrypt, CN=YE2	Fri, 28 Aug 2026 19:44:09 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +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 simperium.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_2014c2f1666e84b2
Output Hash: e0bfde14c3c482374ad3e6dabc273c0329dbee5ab851ba5318e6c63ce9affbf7
Signature: ed25519:1f1c9bf8ee35e5080ff2af60496e5236d150fd5d0142f30ca81769dc8c2e96599d41dc7f3bf9f4e3875d10936405239a5e069491aa5d2b2a90d8fa3f371d6702
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/simperium.com