Hostname
spf.io
Last fetched
spf.io resolves to 2 IPv4 addresses operated by CLOUDFLARENET - Cloudflare, Inc. in CA. WHOIS lists iana:81 as the registrar.
Nutrition Label
Resolution chain
spf.io resolves to 2 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
| IP | Prefix | ASN | Operator | Country |
|---|---|---|---|---|
| 162.159.136.54 | 162.159.212.0/24 | AS13335 | CLOUDFLARENET - Cloudflare, Inc. | CA |
| 162.159.137.54 | 162.159.212.0/24 | AS13335 | CLOUDFLARENET - Cloudflare, Inc. | CA |
WHOIS identity
- Registrar
- iana:81
- Organization
- —
- Contact emails
- —
Subdomains
15 observed subdomains of spf.io.
Web-graph footprint
Distinct hostnames that link to or from spf.io in the public web crawl.
89 sites link to this hostname.
219 sites linked to from this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
3 SPF mechanisms authorising senders for spf.io.
| Mechanism | Target |
|---|---|
| SPF_INCLUDE | _spf.google.com |
| SPF_INCLUDE | amazonses.com |
| SPF_INCLUDE | servers.mcsv.net |
Related pages
Pivot deeper into the graph from spf.io.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "spf.io"})-[: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.