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Hostname

4tu.nl

Last fetched

4tu.nl resolves to 2 IPv4 addresses operated by DIGITALOCEAN-ASN - DigitalOcean, LLC in NL. WHOIS lists registrar:registrar.eu as the registrar.

Nutrition Label

WHISPER CANON · 4tu.nlRouting diversity2.4/10Peering density4.7/10MOAS conflict✓ noneThreat-feed listings6.0/10WHOIS transparency0.0/10Resolver footprint6.3/10canon.whisper.security/host/4tu.nl

Resolution chain

4tu.nl resolves to 2 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
146.190.238.29146.190.224.0/20AS14061DIGITALOCEAN-ASN - DigitalOcean, LLCNL
188.166.69.72188.166.64.0/18AS14061DIGITALOCEAN-ASN - DigitalOcean, LLCNL

WHOIS identity

Registrar
registrar:registrar.eu
Organization
—
Contact emails
—

Subdomains

25 observed subdomains of 4tu.nl.

Subdomain
data.4tu.nl
www.4tu.nl
researchdata.4tu.nl
pronuntio.4tu.nl
opendap.4tu.nl
materialsequipment.4tu.nl
massmailing.4tu.nl
hightechmaterials.4tu.nl
go.4tu.nl
djehuty.4tu.nl

Showing 10 of 25. View all subdomains →

Web-graph footprint

Distinct hostnames that link to or from 4tu.nl in the public web crawl.

375 sites link to this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

5 SPF mechanisms authorising senders for 4tu.nl.

MechanismTarget
SPF_INCLUDE_spf.google.com
SPF_INCLUDEspf.protection.outlook.com
SPF_IP130.161.131.0/24
SPF_IP130.161.180.3
SPF_IP131.180.74.128/27

Related pages

Pivot deeper into the graph from 4tu.nl.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "4tu.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.