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Hostname

perex.cz

Last fetched

perex.cz resolves to 1 IPv4 address operated by AS16019 in CZ. WHOIS lists registrar:reg-web4u as the registrar.

Nutrition Label

WHISPER CANON · perex.czRouting diversity1.5/10Peering density8.0/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency3.3/10Resolver footprint3.2/10canon.whisper.security/host/perex.cz

Resolution chain

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

IPPrefixASNOperatorCountry
77.48.224.24677.48.128.0/17AS16019—CZ
77.48.224.24677.48.128.0/17AS16019—CZ

WHOIS identity

Registrar
registrar:reg-web4u
Organization
jaroslav kysela
Contact emails
—

Subdomains

15 observed subdomains of perex.cz.

Subdomain
alien1.perex.cz
alsa0.perex.cz
alsa1.perex.cz
bee1.perex.cz
cloud.perex.cz
gate.perex.cz
home.perex.cz
imap.perex.cz
just.perex.cz
mail1.perex.cz
mdm.perex.cz
ngate.perex.cz
smtp1.perex.cz
voip.perex.cz
www.perex.cz

Web-graph footprint

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

4 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

2 SPF mechanisms authorising senders for perex.cz.

MechanismTarget
SPF_MXalsa-project.org
SPF_MXperex.cz

Related pages

Pivot deeper into the graph from perex.cz.

Cypher and MCP

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

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