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Hostname

bt4u.one

Last fetched

bt4u.one resolves to 1 IPv4 address operated by AS8560 in DE. WHOIS lists iana:83 as the registrar.

Nutrition Label

WHISPER CANON · bt4u.oneRouting diversity1.5/10Peering density5.8/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency3.3/10Resolver footprint8.3/10canon.whisper.security/host/bt4u.one

Resolution chain

bt4u.one resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
217.160.0.199217.160.0.0/16AS8560—DE

WHOIS identity

Registrar
iana:83
Organization
beach tennis 4u
Contact emails
—

Subdomains

3 observed subdomains of bt4u.one.

Subdomain
checkout.bt4u.one
masterclass.bt4u.one
www.bt4u.one

Web-graph footprint

Distinct hostnames that link to or from bt4u.one in the public web crawl.

92 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

1 SPF mechanism authorising senders for bt4u.one.

MechanismTarget
SPF_INCLUDE_spf-eu.ionos.com

Related pages

Pivot deeper into the graph from bt4u.one.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "bt4u.one"})-[: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.