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Hostname

ist4u.com

Last fetched

ist4u.com resolves to 1 IPv4 address operated by AS3462 in TW. WHOIS lists iana:2 as the registrar.

Nutrition Label

WHISPER CANON · ist4u.comRouting diversity1.5/10Peering density7.4/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency10.0/10Resolver footprint3.2/10canon.whisper.security/host/ist4u.com

Resolution chain

ist4u.com resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
211.75.186.32211.75.0.0/16AS3462—TW

WHOIS identity

Registrar
iana:2
Organization
sue chung-wen
Contact emails

Subdomains

4 observed subdomains of ist4u.com.

Subdomain
mail.ist4u.com
mail1.ist4u.com
mx2.ist4u.com
www.ist4u.com

Web-graph footprint

Distinct hostnames that link to or from ist4u.com in the public web crawl.

8 sites link to this hostname.

4 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 ist4u.com.

MechanismTarget
SPF_Aist4u.com
SPF_IP211.75.186.32
SPF_IP218.211.29.188
SPF_MXist4u.com

Related pages

Pivot deeper into the graph from ist4u.com.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "ist4u.com"})-[: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.