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Hostname

21cr.com

Last fetched

21cr.com resolves to 1 IPv4 address operated by AFFINITY-INTER - Ntirety, Inc. in US. WHOIS lists iana:440 as the registrar.

Nutrition Label

WHISPER CANON · 21cr.comRouting diversity1.5/10Peering density1.2/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency10.0/10Resolver footprint8.0/10canon.whisper.security/host/21cr.com

Resolution chain

21cr.com resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
64.71.33.11464.71.32.0/21AS18447AFFINITY-INTER - Ntirety, Inc.US

WHOIS identity

Registrar
iana:440
Organization
21st century resources
Contact emails

Subdomains

2 observed subdomains of 21cr.com.

Subdomain
mail.21cr.com
www.21cr.com

Web-graph footprint

Distinct hostnames that link to or from 21cr.com in the public web crawl.

Sample inbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

1 SPF mechanism authorising senders for 21cr.com.

MechanismTarget
SPF_INCLUDEmfg.siteprotect.com

Related pages

Pivot deeper into the graph from 21cr.com.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "21cr.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.