upol.cz

Observed 2026-07-13T09:32:01.444Z (10h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle (SPF sender)

Also usesGoogle Search Console

16 subdomains · tranco_40k

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

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

upol.cz

A / AAAA

158.194.230.160

Cloudflareserves the site

namer2.upol.czraven.upol.cznsa.ces.net

upol.cz + ces.netanswers its DNS

bx.virusfree.czax.virusfree.czdx.spamfree.czcx.spamfree.cz

Google (SPF sender)receives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.upol.cz/

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time685 ms

DNS resolutionNOERROR

Redirect chain

https://www.upol.cz/

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

158.194.230.160

MX 4

12817bx.virusfree.cz
12801ax.virusfree.cz
12849dx.spamfree.cz
12833cx.spamfree.cz

TXT 6

v=spf1 include:_spf.google.com include:spf.protection.outlook.com ip4:158.194.0.0/16 ip6:2001:718:1401::/48 include:spf.smartemailing.cz include:spf.olc.cz ~all
3zNARbt6ooYOB+Lzg3XaA39D3JeK4QmZ+FyeRVi9ST64p23zqvAdD8E3UVnBfWw6pa9N7/Wr8OquNBLFV+/o9Q==
google-site-verification=qJolb0krHwEuAaY3OknP03vj90vAw_uLnaQtyEMhzJo
v=DMARC1; p=none; rua=mailto:dmarc+664774@smartemailing.cz; fo=1
v=DKIM1; (detected)
v=DNSSEC1; (detected)

NS 3

namer2.upol.cz
raven.upol.cz
nsa.ces.net

SOA 1

raven.upol.cz petv.cvt.upol.cz

TLS Certificates (0)

None.

Subdomains (16)

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

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

Ed25519 Receipt

Receipt ID: 45ba0b1f-db33-4991-8b3d-23825af95a87
Output Hash: 5da534a8b644bde7370da10ad3505dedfcdf58e0ac0e740ec628cc849bb340a8
Signature: ed25519:28d4ff5b2497ee834f8be86e93e6a8fdfceddfd9cb9a2cd4b18336eb6cd87ff27eb6579c991833f3317539f503998e44faa591f7cadd44ea4d6cf6437cf1b104
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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