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Hostname

yf.io

Last fetched

yf.io has no current public IPv4 resolution in WhisperGraph; WHOIS lists iana:81 as the registrar.

Nutrition Label

WHISPER CANON · yf.ioRouting diversity—Peering density—MOAS conflict—Threat-feed listings—WHOIS transparency—Resolver footprint—canon.whisper.security/host/yf.io

Resolution chain

yf.io has no current public IPv4 resolution in WhisperGraph. The WHOIS record below is the only graph data we have on this hostname.

WHOIS identity

Registrar
iana:81
Organization
fu yu
Contact emails
—

Subdomains

4 observed subdomains of yf.io.

Subdomain
dl.yf.io
www.yf.io
lsun.yf.io
go.yf.io

Web-graph footprint

Distinct hostnames that link to or from yf.io in the public web crawl.

46 sites link to this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

3 SPF mechanisms authorising senders for yf.io.

MechanismTarget
SPF_INCLUDE_spf.google.com
SPF_INCLUDEzoho.com
SPF_MXyf.io

Related pages

Pivot deeper into the graph from yf.io.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "yf.io"})-[: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.