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Hostname

a4tech.nl

Last fetched

a4tech.nl has no current public IPv4 resolution in WhisperGraph; WHOIS lists registrar:exsilia internet b.v. as the registrar.

Nutrition Label

WHISPER CANON · a4tech.nlRouting diversity0.0/10Peering density0.0/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency0.0/10Resolver footprint8.0/10canon.whisper.security/host/a4tech.nl

Resolution chain

a4tech.nl has no current public IPv4 resolution in WhisperGraph. The WHOIS record below is the only graph data we have on this hostname.

WHOIS identity

Registrar
registrar:exsilia internet b.v.
Organization
—
Contact emails
—

Subdomains

3 observed subdomains of a4tech.nl.

Subdomain
mail.a4tech.nl
www.a4tech.nl
wildcard.a4tech.nl

Web-graph footprint

Distinct hostnames that link to or from a4tech.nl in the public web crawl.

567 sites link to this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

3 SPF mechanisms authorising senders for a4tech.nl.

MechanismTarget
SPF_Aa4tech.nl
SPF_INCLUDE_spf.exsilia.net
SPF_MXa4tech.nl

Related pages

Pivot deeper into the graph from a4tech.nl.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "a4tech.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.