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Top-level domain

.cz

Last fetched

.cz is a top-level domain delegated in the DNS root zone and indexed by WhisperGraph, the internet-infrastructure graph behind the Whisper Internet Directory. Its most popular hostname by Tranco rank is seznam.cz.

Most popular hostnames

The 100 highest-ranked .cz hostnames in the Tranco Top 1M, most popular first.

Top registrars (sampled)

Registrars of the 100 hostnames above — a sample of the most popular .cz domains, not a registry-wide census.

  • registrar:reg-active24

    17 of the sampled hostnames

  • registrar:reg-internet-cz

    14 of the sampled hostnames

  • registrar:reg-gransy

    13 of the sampled hostnames

  • registrar:reg-seznam

    13 of the sampled hostnames

  • registrar:reg-webglobe

    11 of the sampled hostnames

  • registrar:reg-wedos

    7 of the sampled hostnames

  • registrar:reg-zoner

    5 of the sampled hostnames

  • registrar:reg-cznic

    3 of the sampled hostnames

  • registrar:reg-ipmirror

    2 of the sampled hostnames

  • registrar:reg-media4web

    2 of the sampled hostnames

Related pages

Pivot from .cz into the hostnames and registrars beneath it.

Queries

Confirms this TLD is indexed.


MATCH (t:TLD {name: $name})
RETURN t.name AS name
Run yourself →

The registrar rollup for this TLD's most popular hostnames, listed above.


UNWIND $hosts AS hn
MATCH (h:HOSTNAME {name: hn})-[:HAS_REGISTRAR]->(r:REGISTRAR)
WITH r.name AS registrar, count(*) AS hostnameCount
RETURN registrar, hostnameCount
ORDER BY hostnameCount DESC
LIMIT 10
Run yourself →

Or query Whisper from your own LLM workflow via the Whisper MCP server.