Hostname

cus.cz

Last fetched Fri, 29 May 2026 20:27:59 GMT

cus.cz resolves to 1 IPv4 address operated by AS43542 in CZ. WHOIS lists registrar:reg-webglobe as the registrar.

Nutrition Label

Resolution chain

cus.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
78.156.156.10	78.156.128.0/19	AS43542	—	CZ

WHOIS identity

Registrar: registrar:reg-webglobe
Organization: ceska lekarska spolecnost j.e. purkyne - ceska uro
Contact emails: —

Subdomains

5 observed subdomains of cus.cz.

Subdomain
marcus.cus.cz
old.cus.cz
portal.cus.cz
vyvoj.cus.cz
www.cus.cz

Web-graph footprint

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

203 sites link to this hostname.

216 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

mail.adalo.cz

SPF policy

2 SPF mechanisms authorising senders for cus.cz.

Mechanism	Target
SPF_INCLUDE	_spf.mlsend.com
SPF_MX	cus.cz

Pivot deeper into the graph from cus.cz.

Cypher and MCP

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

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