Hostname

stfu.cz

Last fetched Fri, 14 Aug 2026 18:12:47 GMT

stfu.cz resolves to 1 IPv4 address operated by OVH - OVH SAS in FR. WHOIS lists registrar:reg-internet-cz as the registrar.

Nutrition Label

Resolution chain

stfu.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
37.187.106.181	37.187.0.0/16	AS16276	OVH - OVH SAS	FR

WHOIS identity

Registrar: registrar:reg-internet-cz
Organization: miroslav bubák
Contact emails: —

Subdomains

5 observed subdomains of stfu.cz.

Subdomain
ns.stfu.cz
ns3.stfu.cz
ns4.stfu.cz
wolfie.stfu.cz
www.stfu.cz

Web-graph footprint

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

28 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

mail.quake3.cz

SPF policy

1 SPF mechanism authorising senders for stfu.cz.

Mechanism	Target
SPF_MX	stfu.cz

Pivot deeper into the graph from stfu.cz.

Cypher and MCP

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

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