Skip to content

Hostname

21cb.ca

Last fetched

21cb.ca resolves to 4 IPv4 addresses operated by CLOUDFLARENET - Cloudflare, Inc. in CA. WHOIS lists registrar:enom canada corp. as the registrar.

Nutrition Label

WHISPER CANON · 21cb.caRouting diversity3.5/10Peering density10.0/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency10.0/10Resolver footprint3.2/10canon.whisper.security/host/21cb.ca

Resolution chain

21cb.ca resolves to 4 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
104.21.88.228104.21.80.0/20AS13335CLOUDFLARENET - Cloudflare, Inc.CA
172.67.153.181172.67.144.0/20AS13335CLOUDFLARENET - Cloudflare, Inc.CA
188.114.96.3188.114.96.0/24AS13335CLOUDFLARENET - Cloudflare, Inc.CA
188.114.97.3188.114.97.0/24AS13335CLOUDFLARENET - Cloudflare, Inc.CA

WHOIS identity

Registrar
registrar:enom canada corp.
Organization
bizview media
Contact emails

Subdomains

2 observed subdomains of 21cb.ca.

Subdomain
30775b86fa92.21cb.ca
www.21cb.ca

Web-graph footprint

Distinct hostnames that link to or from 21cb.ca in the public web crawl.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

1 SPF mechanism authorising senders for 21cb.ca.

MechanismTarget
SPF_INCLUDEzoho.com

Related pages

Pivot deeper into the graph from 21cb.ca.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "21cb.ca"})-[: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.