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Hostname

kolster.nl

Last fetched

kolster.nl resolves to 1 IPv4 address operated by UPCLOUD - UpCloud Ltd in NL. WHOIS lists registrar:traction it b.v. as the registrar.

Nutrition Label

WHISPER CANON · kolster.nlRouting diversity1.5/10Peering density4.7/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency0.0/10Resolver footprint8.0/10canon.whisper.security/host/kolster.nl

Resolution chain

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

IPPrefixASNOperatorCountry
94.237.125.8994.237.124.0/23AS202053UPCLOUD - UpCloud LtdNL

WHOIS identity

Registrar
registrar:traction it b.v.
Organization
—
Contact emails
—

Subdomains

4 observed subdomains of kolster.nl.

Subdomain
app.kolster.nl
dev.kolster.nl
mobile.kolster.nl
www.kolster.nl

Web-graph footprint

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

29 sites link to this hostname.

25 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

6 SPF mechanisms authorising senders for kolster.nl.

MechanismTarget
SPF_INCLUDE_spflist.internetdienstennederland.nl
SPF_INCLUDEservers.mcsv.net
SPF_INCLUDEspf.protection.outlook.com
SPF_IP185.89.172.190/32
SPF_IP2a02:2770:8:0:21a:4aff:fec1:fb89
SPF_IP84.22.109.107

Related pages

Pivot deeper into the graph from kolster.nl.

Cypher and MCP

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

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