lfs.cz

Observed Aug 2, 2026, 18:56 UTC (11d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of lfs.cz was taken 11d ago

lfs.cz is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting lfs.cz under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch lfs.cz Watching a domain needs a DRM3 account. The reading above stays free and public either way.

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Up right now

Secured byLet's Encrypt

Also usesGoogle Search Console

IPv6 · 20 subdomains · majestic

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

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

lfs.cz

A / AAAA

37.9.175.2062a00:4b40:aaaa:2010::6

2a00serves the site

ns1.websupport.czns2.websupport.czns3.websupport.eu

websupport.cz + websupport.euanswers its DNS

mailin1.lfs.czmailin2.lfs.cz

lfs.czreceives its email

TLS

en2023.lfs.cz

Let's Encryptissued its certificate

DNS Records

A 1

37.9.175.206

AAAA 1

2a00:4b40:aaaa:2010::6

MX 2

10mailin1.lfs.cz
100mailin2.lfs.cz

TXT 2

google-site-verification=W6a_gy5eXE64cgwP-xo7YTJK9RuGwgx8cs4aUScRtpg
v=spf1 a a:mailing.lfs.cz mx include:spf.mail-komplet.cz a:smtp.gmail.com include:lfs.cz ip4:37.9.175.206 ip6:2a00:4b40:aaaa:2010::6 include:_spf.websupport.cz ~all

NS 3

ns1.websupport.cz
ns2.websupport.cz
ns3.websupport.eu

SOA 1

ns1.websupport.cz admin.websupport.cz

DMARC_RECORDS 1

v=DMARC1; p=quarantine; rua=mailto:david.huspenina@acfk.cz

TLS Certificates (3)

Common Name	Issuer	Expires
`en2023.lfs.cz`	C=US, O=Let's Encrypt, CN=YR2	Fri, 25 Sep 2026 08:12:39 +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 (20)

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; the only network request the check makes is for the published public keys.

Verify this receipt

Ed25519 Receipt

Receipt ID: rcpt_b4f363416add6614
Output Hash: 253de6dcc4e19c8ca2a13ecd6cd395bd81d76a292dc0e88c295190bcd94c9806
Signature: ed25519:e31d4bc90885f90845ce28e84a00983402cca98ccaa537b4e84e45cce8081814cd5ef458190fd0bd1a20bda29444c1260f4f02048aa7f883f3baa9202f63f60a
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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