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Hostname

ef.nl

Last fetched

ef.nl resolves to 2 IPv4 addresses operated by CLOUDFLARENET - Cloudflare, Inc. in CA. WHOIS lists registrar:corporation service company limited as the registrar.

Nutrition Label

WHISPER CANON · ef.nlRouting diversity1.5/10Peering density10.0/10MOAS conflict✓ noneThreat-feed listings6.8/10WHOIS transparency0.0/10Resolver footprint8.0/10canon.whisper.security/host/ef.nl

Resolution chain

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

IPPrefixASNOperatorCountry
104.18.10.139104.18.0.0/20AS13335CLOUDFLARENET - Cloudflare, Inc.CA
104.18.11.139104.18.0.0/20AS13335CLOUDFLARENET - Cloudflare, Inc.CA

WHOIS identity

Registrar
registrar:corporation service company limited
Organization
—
Contact emails
—

Subdomains

3 observed subdomains of ef.nl.

Subdomain
bc.ef.nl
www.ef.nl
qa.ef.nl

Web-graph footprint

Distinct hostnames that link to or from ef.nl in the public web crawl.

236 sites link to this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

1 SPF mechanism authorising senders for ef.nl.

MechanismTarget
SPF_INCLUDEspf.protection.outlook.com

Related pages

Pivot deeper into the graph from ef.nl.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "ef.nl"})-[: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.