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Hostname

prefa.cz

Last fetched

prefa.cz resolves to 1 IPv4 address operated by AS60606 in CZ. WHOIS lists registrar:reg-internet-cz as the registrar.

Nutrition Label

WHISPER CANON · prefa.czRouting diversity1.5/10Peering density4.6/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency10.0/10Resolver footprint4.0/10canon.whisper.security/host/prefa.cz

Resolution chain

prefa.cz resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
91.239.200.3591.239.200.0/23AS60606—CZ

WHOIS identity

Registrar
registrar:reg-internet-cz
Organization
thinline s.r.o.
Contact emails

Subdomains

6 observed subdomains of prefa.cz.

Subdomain
azpro.prefa.cz
email.prefa.cz
mail.prefa.cz
mails.prefa.cz
www.prefa.cz

Showing 5 of 6. View all subdomains →

Web-graph footprint

Distinct hostnames that link to or from prefa.cz in the public web crawl.

115 sites link to this hostname.

61 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

3 SPF mechanisms authorising senders for prefa.cz.

MechanismTarget
SPF_Aprefa.cz
SPF_INCLUDEspf.mail-komplet.cz
SPF_MXprefa.cz

Related pages

Pivot deeper into the graph from prefa.cz.

Cypher and MCP

Reproduce the resolution chain directly against graph.whisper.security:

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

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