bkom.cz

Observed Aug 11, 2026, 11:52 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of bkom.cz was taken 3d ago

bkom.cz is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting bkom.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 bkom.cz Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Verify this receipt yourself + Watch this domain
Up right now
Runs onO2 Czech Republic
Email byMicrosoft 365
Secured byLet's Encrypt
Registered withREG-ZONER
Also usesAtlassian
DNSSEC on · 1 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat bkom.cz actually stands on - every host below is a signed observation
bkom.cz
A / AAAA
194.228.50.140
O2 Czech Republicserves the site
NS
ns1.regzone.czns1.regzone.dens1.regzone.info
regzone.cz + regzone.de + moreanswers its DNS
MX
bkom-cz.mail.protection.outlook.com
Microsoft 365receives its email
TLS
bkom.cz
Let's Encryptissued its certificate

DNS Records

A 1

  • 194.228.50.140

MX 1

  • 0bkom-cz.mail.protection.outlook.com

TXT 3

  • 5CkJdoFgvSiN5avwpUglE7IMPJvfLEbvUowoB29x/U0wMg9N/N8kl3Nd1NBRUYQakw5Bk8h8kW7cjJZLdIZHAg==
  • atlassian-domain-verification=1Yol52tOfdMaLRKeMrRUPVVLUDWQaeZ3KiS9Pacuypv6BtaF87XWSk4S9SyY567U
  • v=spf1 a:mail.bkom.cz mx ip4:194.228.50.126 ip4:62.168.15.82 ip4:91.201.32.12 ip4:194.228.50.154 ip4:85.93.121.22 ip4:91.214.192.158 ip4:82.99.163.130 ip4:91.201.32.12 ip4:194.228.50.140 ip4:194.228.50.141 ip4:194.228.50.145 ip4:194.228.50.146 ip4:194.228.50.177 include:spf.protection.outlook.com include:_spf.mailersend.net -all

NS 3

  • ns1.regzone.cz
  • ns1.regzone.de
  • ns1.regzone.info

SOA 1

  • ns1.regzone.cz administrator.czechia.cz

DMARC_RECORDS 1

  • v=DMARC1; p=quarantine; pct=100;rua=mailto:dmarcreports@bkom.cz; ruf=mailto:dmarcreports@bkom.cz

TLS Certificates (3)

Common NameIssuerExpires
bkom.cz C=US, O=Let's Encrypt, CN=YR1 Tue, 29 Sep 2026 02:17:52 +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)

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_d02b175bc048bce0
Output Hash
b219d2b0057c07822080bbf0b53b1b23d61ca6a24729d58c845217544336f2ca
Signature
ed25519:1c916d21d3860f8e3f303bb1dd88cec245ac5bdbc4c59fd6dd12f3cf6d6c75ce5969a813ed7ac0c72f940259590bef2406dd5b59ac3ea851189975ead6410b0d
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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CONTINUOUS INTERNET TELEMETRY24H DRIFT45,450 material changesacross 43,413 domains · 24h to ~2h ago · +1,368 vs yesterdayROTATION55 domains moved DNS from koaladns.com to magpiedns.com, 55 moved backa rotation loop, not a migration · 24hNOW492 curated domains not reachablelast probe, steadySITE ERRORS36,377 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 115,552 sites429 rate-limit / 403 bot-block, a posture signal