Hostname

cvnet.cz

Last fetched Wed, 22 Jul 2026 06:10:39 GMT

cvnet.cz resolves to 1 IPv4 address operated by AS24971 in CZ. WHOIS lists registrar:reg-active24 as the registrar.

Nutrition Label

Resolution chain

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

IP	Prefix	ASN	Operator	Country
80.79.17.134	80.79.16.0/20	AS24971	—	CZ

WHOIS identity

Registrar: registrar:reg-active24
Organization: it innovation s.r.o.
Contact emails: —

Subdomains

4 observed subdomains of cvnet.cz.

Subdomain
imapy.cvnet.cz
mail.cvnet.cz
pop3.cvnet.cz
www.cvnet.cz

Threat posture

History

Mail and authentication

MX records

SPF policy

4 SPF mechanisms authorising senders for cvnet.cz.

Mechanism	Target
SPF_IP	2001:470:6f:75d:0:0:0:1
SPF_IP	2001:470:6f:75d:0:0:0:2
SPF_IP	213.192.42.16
SPF_IP	46.29.224.5

Pivot deeper into the graph from cvnet.cz.

Cypher and MCP

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

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