Hostname

tudc.cz

Last fetched Tue, 28 Jul 2026 08:37:41 GMT

tudc.cz resolves to 1 IPv4 address operated by AS25512 in CZ. WHOIS lists registrar:reg-webglobe as the registrar.

Nutrition Label

Resolution chain

tudc.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
82.202.100.53	82.202.64.0/18	AS25512	—	CZ

WHOIS identity

Registrar: registrar:reg-webglobe
Organization: správa železnic s. o.
Contact emails: —

Subdomains

6 observed subdomains of tudc.cz.

Subdomain
brouseni.tudc.cz
diagnostika.tudc.cz
edata.tudc.cz
muzeum.tudc.cz
typdok.tudc.cz
www.tudc.cz

Web-graph footprint

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

10 sites link to this hostname.

12 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

4 SPF mechanisms authorising senders for tudc.cz.

Mechanism	Target
SPF_IP	81.19.46.20/32
SPF_IP	81.19.46.25/32
SPF_IP	81.19.46.4/32
SPF_MX	tudc.cz

Pivot deeper into the graph from tudc.cz.

Cypher and MCP

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

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