rsko.cz

Observed Jul 28, 2026, 10:54 UTC (1d 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

Secured byLet's Encrypt

1 subdomain · tranco

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

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

rsko.cz

A / AAAA

185.28.193.57

unattributedserves the site

ns.gransy.comns5.gransy.comns3.gransy.comns2.gransy.com+1 more

gransy.comanswers its DNS

mx.internetserver.cz

internetserver.czreceives its email

TLS

rsko.cz

Let's Encryptissued its certificate

DNS Records

A 1

185.28.193.57

MX 1

10mx.internetserver.cz

TXT 5

v=spf1 a mx include:gransy.com
v=spf1 a mx include:gransy.com
v=spf1 a mx include:gransy.com
v=spf1 a mx include:gransy.com
v=spf1 a mx include:gransy.com

NS 5

ns.gransy.com
ns5.gransy.com
ns3.gransy.com
ns2.gransy.com
ns4.gransy.com

SOA 1

ns.gransy.com root.gransy.com

TLS Certificates (3)

Common Name	Issuer	Expires
`rsko.cz`	C=US, O=Let's Encrypt, CN=YR1	Tue, 01 Sep 2026 22:12:26 +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.rsko.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 rsko.cz. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_c02884011580fe81
Output Hash: 83b2c66591cd0f4d273c609f8bffb8bdc0fc04d44669da6f8380161475992b49
Signature: ed25519:453d118530d7b3806706140bc8497342b3f0958b7e2a22f2ea66057a13d9cda0fdf4ce4552c83bc84a803f7c3952e1b58c952bf16df01fd37650a8ba966d9307
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/rsko.cz