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Hostname

fronk.cz

Last fetched

fronk.cz resolves to 1 IPv4 address operated by AS39790 in CZ. WHOIS lists registrar:reg-media4web as the registrar.

Nutrition Label

WHISPER CANON · fronk.czRouting diversity1.5/10Peering density2.4/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency3.3/10Resolver footprint3.2/10canon.whisper.security/host/fronk.cz

Resolution chain

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

IPPrefixASNOperatorCountry
81.91.83.18081.91.80.0/21AS39790—CZ

WHOIS identity

Registrar
registrar:reg-media4web
Organization
fronk lukáš
Contact emails
—

Subdomains

13 observed subdomains of fronk.cz.

Subdomain
birkof.fronk.cz
dev.fronk.cz
foto.fronk.cz
fotovideo.fronk.cz
ftp.fronk.cz
josef.fronk.cz
mail.fronk.cz
mail2.fronk.cz
ns.fronk.cz
ns2.fronk.cz
pop3.fronk.cz
wap.fronk.cz
www.fronk.cz

Web-graph footprint

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

13 sites link to this hostname.

Sample inbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

3 SPF mechanisms authorising senders for fronk.cz.

MechanismTarget
SPF_INCLUDE_spf.google.com
SPF_IP81.91.83.180
SPF_IP81.91.86.12

Related pages

Pivot deeper into the graph from fronk.cz.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "fronk.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.