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Hostname

k2challenge.nl

Last fetched

k2challenge.nl resolves to 1 IPv4 address operated by AS48635 in NL. WHOIS lists registrar:the registrar company b.v. as the registrar.

Nutrition Label

WHISPER CANON · k2challenge.nlRouting diversity1.5/10Peering density5.2/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency0.0/10Resolver footprint4.0/10canon.whisper.security/host/k2challenge.nl

Resolution chain

k2challenge.nl resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
5.157.82.1215.157.80.0/21AS48635—NL

WHOIS identity

Registrar
registrar:the registrar company b.v.
Organization
—
Contact emails
—

Subdomains

1 observed subdomain of k2challenge.nl.

Subdomain
www.k2challenge.nl

Web-graph footprint

Distinct hostnames that link to or from k2challenge.nl in the public web crawl.

10 sites link to this hostname.

26 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

9 SPF mechanisms authorising senders for k2challenge.nl.

MechanismTarget
SPF_Ak2challenge.nl
SPF_INCLUDEsendgrid.net
SPF_INCLUDEservers.mcsv.net
SPF_INCLUDEspf.protection.outlook.com
SPF_IP185.19.58.50
SPF_IP194.247.31.164
SPF_IP2a01:7c8:aabf:552::1/48
SPF_IP37.97.155.113
SPF_MXk2challenge.nl

Related pages

Pivot deeper into the graph from k2challenge.nl.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "k2challenge.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.