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Hostname

cernet.cz

Last fetched

cernet.cz resolves to 62.109.155.254, announced in 62.109.128.0/19 by IGNUM-AS - Webglobe, s.r.o. in CZ. cernet.cz is not listed on any threat feed indexed by WhisperGraph; reconciled level NONE.

Threat posture

0threat score (procedure-native scale)

NONE

No threats observed.

Threat feeds listing this
0
Verdict coverage
known-clean

Nutrition Label

WHISPER CANON · cernet.czRouting diversity2.4/10Peering density4.2/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency3.3/10Resolver footprint8.2/10canon.whisper.security/host/cernet.cz

Resolution chain

Attribution

webglobe

ORIGIN_AS

WHOIS identity

Registrar
registrar:reg-gransy
Registrant organisation
jiří černý

Subdomains

Subdomain
mail.cernet.cz
www.cernet.cz

Showing 2 of 2 subdomains (2 per page).

Web-graph footprint

Sampled `LINKS_TO` edges. The hyperlink layer is a pilot sample, not a web-scale crawl, so these are illustrative.

Sample inbound links

Sample outbound links

Mail and authentication

Nameservers

  • ns.vas-hosting.com
  • ns.vas-hosting.cz
  • ns.vas-hosting.eu
  • a.root-servers.net
  • b.root-servers.net
  • c.root-servers.net
  • d.root-servers.net
  • e.root-servers.net
  • f.root-servers.net
  • g.root-servers.net
  • h.root-servers.net
  • i.root-servers.net
  • j.root-servers.net
  • k.root-servers.net
  • l.root-servers.net
  • m.root-servers.net

MX records

  • mx1.savana.cz
  • mx2.savana.cz

SPF policy

  • ip: 77.93.201.230/27
  • a: cernet.cz
  • mx: cernet.cz
  • include: _spf.savana.cz
  • ip: 2a01:430:109:0:0:0:de:b
  • ip: 2a01:430:109:0:0:0:de:bb
  • ip: 77.93.201.232

Threat-feed evidence

History

Related pages

Pivot from cernet.cz into the addresses, networks and registries it depends on.

Cypher and MCP

Reproduce this hostname's resolution chain against graph.whisper.security:

MATCH (h:HOSTNAME {name: "cernet.cz"})-[:RESOLVES_TO]->(ip:IPV4)
      -[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)-[:ROUTES]->(a:ASN)
OPTIONAL MATCH (a)-[:HAS_NAME]->(n:ASN_NAME)
RETURN ip.name AS ip, ap.name AS prefix, a.name AS asn, n.name AS network
LIMIT 20

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