Hostname
headfirst.nl
Last fetched
headfirst.nl resolves to 1 IPv4 address operated by AMAZON-02 - Amazon.com, Inc. in DE. WHOIS lists iana:1603 as the registrar.
Nutrition Label
Resolution chain
headfirst.nl resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
| IP | Prefix | ASN | Operator | Country |
|---|---|---|---|---|
| 18.198.76.236 | 18.198.0.0/15 | AS16509 | AMAZON-02 - Amazon.com, Inc. | DE |
WHOIS identity
- Registrar
- iana:1603
- Organization
- —
- Contact emails
- —
Subdomains
17 observed subdomains of headfirst.nl.
Web-graph footprint
Distinct hostnames that link to or from headfirst.nl in the public web crawl.
370 sites link to this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
10 SPF mechanisms authorising senders for headfirst.nl.
| Mechanism | Target |
|---|---|
| SPF_INCLUDE | 26198844.spf05.hubspotemail.net |
| SPF_INCLUDE | amazonses.com |
| SPF_INCLUDE | carerix.net |
| SPF_INCLUDE | emsd1.com |
| SPF_INCLUDE | mail.zendesk.com |
| SPF_INCLUDE | mailswitch.nl |
| SPF_INCLUDE | scanners.headfirst.nl |
| SPF_INCLUDE | servers.mcsv.net |
| SPF_INCLUDE | spf.afas.online |
| SPF_INCLUDE | spf.protection.outlook.com |
Related pages
Pivot deeper into the graph from headfirst.nl.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "headfirst.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.