Hostname

cusjm.cz

Last fetched Tue, 30 Jun 2026 11:31:00 GMT

cusjm.cz resolves to 1 IPv4 address operated by AS15685 in CZ. WHOIS lists registrar:reg-gransy as the registrar.

Nutrition Label

Resolution chain

cusjm.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
109.123.222.131	109.123.216.0/21	AS15685	—	CZ

WHOIS identity

Registrar: registrar:reg-gransy
Organization: public agency, s.r.o.
Contact emails: —

Subdomains

2 observed subdomains of cusjm.cz.

Subdomain
archiv.cusjm.cz
www.cusjm.cz

Web-graph footprint

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

39 sites link to this hostname.

63 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

server.jerewan.cz

SPF policy

3 SPF mechanisms authorising senders for cusjm.cz.

Mechanism	Target
SPF_A	cusjm.cz
SPF_INCLUDE	spf.blueboard.cz
SPF_MX	cusjm.cz

Pivot deeper into the graph from cusjm.cz.

Cypher and MCP

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

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