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Hostname

surfnet.nl

Last fetched

surfnet.nl resolves to 2 IPv4 addresses operated by AS1103 in NL. WHOIS lists registrar:surf b.v. as the registrar.

Nutrition Label

WHISPER CANON · surfnet.nlRouting diversity2.4/10Peering density10.0/10MOAS conflict✓ noneThreat-feed listings6.0/10WHOIS transparency0.0/10Resolver footprint5.2/10canon.whisper.security/host/surfnet.nl

Resolution chain

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

IPPrefixASNOperatorCountry
145.100.190.243145.100.0.0/15AS1103—NL
192.87.108.15192.87.0.0/16AS1103—NL

WHOIS identity

Registrar
registrar:surf b.v.
Organization
—
Contact emails
—

Subdomains

3,368 observed subdomains of surfnet.nl.

Subdomain
1x.surfnet.nl
2cows.surfnet.nl
4.surfnet.nl
44.surfnet.nl
aai.surfnet.nl
achtennegentig.surfnet.nl
achtentachtig.surfnet.nl
achtenveertig.surfnet.nl
achtenvijftig.surfnet.nl
achtenzestig.surfnet.nl
achtenzeventig.surfnet.nl
ad-utr-test.surfnet.nl
ad.surfnet.nl
adams-drac.surfnet.nl
adams-vmotion.surfnet.nl
adams.surfnet.nl
adp.surfnet.nl
adresboek.surfnet.nl
airt.surfnet.nl
aker.surfnet.nl
alchemy.surfnet.nl
aliens.surfnet.nl
alpha.surfnet.nl
amp.surfnet.nl
ams3.surfnet.nl

Showing 25 of 3,368. View all subdomains →

Web-graph footprint

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

210 sites link to this hostname.

1 site linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

19 SPF mechanisms authorising senders for surfnet.nl.

MechanismTarget
SPF_INCLUDE_spf.surfmailfilter.nl
SPF_INCLUDEspf.protection.outlook.com
SPF_INCLUDEspfinc.prolocation.net
SPF_IP145.0.7.50
SPF_IP145.100.178.114
SPF_IP145.100.178.115
SPF_IP145.100.182.69/32
SPF_IP145.100.185.144/28
SPF_IP145.101.112.0/24
SPF_IP145.101.113.5/32
SPF_IP145.97.20.187
SPF_IP192.87.108.0/22
SPF_IP192.87.66.87
SPF_IP194.171.167.0/24
SPF_IP2001:610:188::/48
SPF_IP2001:610:1:4000::/52
SPF_IP2001:610:428::/48
SPF_IP2001:610:508::/48
SPF_IP91.208.87.45

Related pages

Pivot deeper into the graph from surfnet.nl.

Cypher and MCP

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

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