techlib.cz

Observed Jul 17, 2026, 15:16 UTC (1d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Email byMailgun

Secured byLet's Encrypt

Also usesMiroGoogle Search Console

1 subdomain · tranco_100k

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

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

techlib.cz

A / AAAA

195.113.241.64

unattributedserves the site

ns.techlib.cz

techlib.czanswers its DNS

mta.techlib.cz

Mailgunreceives its email

TLS

techlib.cz

Let's Encryptissued its certificate

DNS Records

A 1

195.113.241.64

MX 1

10mta.techlib.cz

TXT 11

v=spf1 mx ip4:195.113.241.83/32 ip4:195.113.241.10/32 ip4:195.113.241.42/32 include:mailgun.org include:eu.mailgun.org include:spf.protection.outlook.com -all
MS=ms55933499
MS=B9D8BA0D5ABC05DB743B005A76CCE5704D08E201
miro-verification=e75ba57aeecf0107ae60fc6a105ae5c1ee31ddeb
openai-domain-verification=dv-inzy4ck3Zs2nVftk8zXxcMfP
google-site-verification=Ktc7BORRXjUAhSSqW99fNbnnIUI5fU0S40od8ZCvuVI
apple-domain-verification=pjyO0Jb1padBVfrv
google-site-verification=RYk8XYfSZwkZWS0bX_PFIUHI95wI9nIuI9ekMi8tLQg
google-site-verification=6D5Wyivt6LOxH8Fki-iPDwTY4URW_vnYxMxRNmv0EgI
v=DMARC1; p=quarantine; rua=mailto:dmarc@techlib.cz; fo=1; adkim=r; aspf=r; sp=quarantine

NS 1

ns.techlib.cz

SOA 1

ns.techlib.cz hostmaster.techlib.cz

SRV 1

mail2.techlib.cz:443 p0

TLS Certificates (3)

Common Name	Issuer	Expires
`techlib.cz`	C=US, O=Let's Encrypt, CN=YR2	Wed, 02 Sep 2026 21:06:18 +0000
`YR2`	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.techlib.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 techlib.cz. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 65d6a389-c99a-4a75-8a6c-2d2a9a4e1545
Output Hash: 6f9b2ef9baa5ef511540357166e178db27147de3f9ce938e522ff439ee841ef8
Signature: ed25519:bb9a003cce4f0d9ea67b53aa2b1220c802d8b064afd8d1a20f9ce279de1cc84b4920d2a7aa43c55d18bfc4d2a1cac0da0d5d4278b2a506d549e6c45f6565c60c
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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