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Hostname

josekoster.nl

Last fetched

josekoster.nl resolves to 1 IPv4 address operated by AS12859 in NL. WHOIS lists registrar:rvlt-domains b.v. as the registrar.

Nutrition Label

WHISPER CANON · josekoster.nlRouting diversity1.5/10Peering density9.1/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency0.0/10Resolver footprint5.6/10canon.whisper.security/host/josekoster.nl

Resolution chain

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

IPPrefixASNOperatorCountry
213.154.231.201213.154.224.0/19AS12859—NL

WHOIS identity

Registrar
registrar:rvlt-domains b.v.
Organization
—
Contact emails
—

Subdomains

2 observed subdomains of josekoster.nl.

Subdomain
mail.josekoster.nl
www.josekoster.nl

Web-graph footprint

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

7 sites link to this hostname.

41 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

8 SPF mechanisms authorising senders for josekoster.nl.

MechanismTarget
SPF_Ajosekoster.nl
SPF_INCLUDEfilter-out.zxcs.nl
SPF_INCLUDEfilter.theory7.net
SPF_IP185.104.29.110/21
SPF_IP2001:7b8:618:a:213:154:231:201
SPF_IP213.154.231.201
SPF_IP2a06:2ec0:1:0:0:0:0:137/120
SPF_MXjosekoster.nl

Related pages

Pivot deeper into the graph from josekoster.nl.

Cypher and MCP

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

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