zusrf.cz

Observed Jul 27, 2026, 20:18 UTC (6d 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

Up right now

Email byMicrosoft 365

Secured byLet's Encrypt

IPv6 · 1 subdomain · domcop

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

INFRASTRUCTURE MAPwhat zusrf.cz actually stands on - every host below is a signed observation

zusrf.cz

A / AAAA

88.86.103.1352a01:28:ca:110:88:86:103:135

2a01serves the site

ns.forpsi.czns.forpsi.itns.forpsi.net

forpsi.cz + forpsi.it + moreanswers its DNS

zusrf-cz.mail.protection.outlook.com

Microsoft 365receives its email

TLS

www.zusrf.cz

Let's Encryptissued its certificate

DNS Records

A 1

88.86.103.135

AAAA 1

2a01:28:ca:110:88:86:103:135

MX 1

0zusrf-cz.mail.protection.outlook.com

TXT 1

v=spf1 include:spf.protection.outlook.com ip4:40.68.221.181 include:klasifikace.jphsw.cz -all

NS 3

ns.forpsi.cz
ns.forpsi.it
ns.forpsi.net

SOA 1

ns.forpsi.net admin.forpsi.com

TLS Certificates (3)

Common Name	Issuer	Expires
`www.zusrf.cz`	C=US, O=Let's Encrypt, CN=YR1	Wed, 07 Oct 2026 01:13:28 +0000
`YR1`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

www.zusrf.cz

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 zusrf.cz. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_564ce8473edd4e58
Output Hash: b70d21f387022c82430b6b8f5dae70504ca3d5309ff8edc7328018e89a99c7bf
Signature: ed25519:9253408c6eadba8367b1263a1a6de6a14e35af33a7c09519dc8a519a91f3455e82b16586ca0baebad994920faea9561be70f0a87173202fa187d743bd06e010e
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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