drk.ac

Observed Jul 27, 2026, 03:14 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.

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Up right now

Email byMicrosoft 365

Secured byLet's Encrypt

1 subdomain · majestic

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

INFRASTRUCTURE MAPwhat drk.ac actually stands on - every host below is a signed observation

drk.ac

A / AAAA

80.82.221.205

unattributedserves the site

ns2.checkdomain.dens.checkdomain.de

checkdomain.deanswers its DNS

drk-ac.mail.protection.outlook.com

Microsoft 365receives its email

TLS

drk.ac

Let's Encryptissued its certificate

DNS Records

A 1

80.82.221.205

MX 1

5drk-ac.mail.protection.outlook.com

TXT 3

MS=ms68384808
v=spf1 include:spf.protection.outlook.com -all
v=DMARC1; p=none; rua=mailto:dmarc@drk-datacenter.de; ruf=mailto:dmarc@drk-datacenter.de; ri=172800; fo=1;fo=1;

NS 2

ns2.checkdomain.de
ns.checkdomain.de

SOA 1

ns.checkdomain.de it\.support.drk-region-aachen.de

TLS Certificates (4)

Common Name	Issuer	Expires
`drk.ac`	C=US, O=Let's Encrypt, CN=YE2	Tue, 15 Sep 2026 11:45:27 +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 (1)

www.drk.ac

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 drk.ac. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_19e157645ec4a25a
Output Hash: ffbeae83e6ac86a217d5efe9625589cb16d9436835674f1a05c236257f1355e7
Signature: ed25519:8f94c654c8cbe15151752255dd531393a5dfde5da86aea78ebd7e95d064f1bcfd751087739db1b85bc3b7457057ff52f79b6e5166f563288b55ccb03c0388b0b
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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