cas.sk

Observed Jul 18, 2026, 13:12 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byMicrosoft 365

Secured byLet's Encrypt

Also usesGoogle Search Console

IPv6 · tranco_20k

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

INFRASTRUCTURE MAPwhat cas.sk actually stands on - every host below is a signed observation

cas.sk

A / AAAA

172.66.164.191104.20.28.2352606:4700:10::6814:1ceb2606:4700:10::ac42:a4bf

Cloudflareserves the site

chuck.ns.cloudflare.comerin.ns.cloudflare.com

cloudflare.comanswers its DNS

cas-sk.mail.protection.outlook.com

Microsoft 365receives its email

TLS

cas.sk

Let's Encryptissued its certificate

DNS Records

A 2

172.66.164.191
104.20.28.235

AAAA 2

2606:4700:10::6814:1ceb
2606:4700:10::ac42:a4bf

MX 1

0cas-sk.mail.protection.outlook.com

TXT 4

MS=ms18940005
MS=ms54949562
google-site-verification=LR48b-iZtf_paMRroa9QeflX6R-_VAkpasze8OjWUj0
v=spf1 ip4:212.5.217.228 include:spf.protection.outlook.com ~all

NS 2

chuck.ns.cloudflare.com
erin.ns.cloudflare.com

SOA 1

chuck.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (4)

Common Name	Issuer	Expires
`cas.sk`	C=US, O=Let's Encrypt, CN=YE2	Thu, 08 Oct 2026 05:01:15 +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 cas.sk. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 4425f054-d4fb-4f88-b60c-444cacb0fda8
Output Hash: a7ede2ace6ad1eac7f149d59bf6797b82a59e1e33c4e457cf99c4b49ea517f63
Signature: ed25519:3205acd157369176d1955e5016543a5fdebaa7d827dd82ea4442af8fc04ea0cbcc2ccf19ea1acc61cac482a02701bb72e9707b94d05442526146efb3a3536501
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/cas.sk