Hostname
a1.nl
Last fetched
a1.nl has no current public IPv4 resolution in WhisperGraph; WHOIS lists registrar:registrar.eu as the registrar.
Nutrition Label
Resolution chain
a1.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:registrar.eu
- Organization
- —
- Contact emails
- —
Subdomains
194 observed subdomains of a1.nl.
Showing 25 of 194. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from a1.nl in the public web crawl.
63 sites link to this hostname.
5 sites linked to from this hostname.
Sample inbound links
Sample outbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
10 SPF mechanisms authorising senders for a1.nl.
| Mechanism | Target |
|---|---|
| SPF_A | cdrs-middleware.a1.nl |
| SPF_A | smtp-relay.a1.nl |
| SPF_INCLUDE | mail.zendesk.com |
| SPF_INCLUDE | spf.emro.nl |
| SPF_INCLUDE | spf.protection.outlook.com |
| SPF_IP | 104.16.53.111/32 |
| SPF_IP | 145.131.32.57 |
| SPF_IP | 213.171.64.0/19 |
| SPF_IP | 217.77.156.113/32 |
| SPF_IP | 34.249.79.17 |
Related pages
Pivot deeper into the graph from a1.nl.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "a1.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 20Or query Whisper from your own LLM workflow via the Whisper MCP server.