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Hostname

u2b.cx

Last fetched

u2b.cx resolves to 2 IPv4 addresses operated by CLOUDFLARENET - Cloudflare, Inc. in CA. WHOIS lists iana:9999 as the registrar.

Nutrition Label

WHISPER CANON · u2b.cxRouting diversity2.4/10Peering density10.0/10MOAS conflict✓ noneThreat-feed listings6.8/10WHOIS transparency3.3/10Resolver footprint8.0/10canon.whisper.security/host/u2b.cx

Resolution chain

u2b.cx resolves to 2 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
104.21.16.13104.21.16.0/20AS13335CLOUDFLARENET - Cloudflare, Inc.CA
172.67.209.194172.67.208.0/20AS13335CLOUDFLARENET - Cloudflare, Inc.CA

WHOIS identity

Registrar
iana:9999
Organization
private by design,
Contact emails
—

Subdomains

17 observed subdomains of u2b.cx.

Subdomain
2.u2b.cx
3.u2b.cx
api.u2b.cx
api2.u2b.cx
az.u2b.cx
dev.u2b.cx
je.u2b.cx
la.u2b.cx
nl.u2b.cx
old.u2b.cx
pa.u2b.cx
proxy.u2b.cx
sj.u2b.cx
ts.u2b.cx
wildcard.u2b.cx
ws.u2b.cx
www.u2b.cx

Web-graph footprint

Distinct hostnames that link to or from u2b.cx in the public web crawl.

7 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 u2b.cx.

MechanismTarget
SPF_INCLUDE_spf.mx.cloudflare.net

Related pages

Pivot deeper into the graph from u2b.cx.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "u2b.cx"})-[: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.