Hostname
postmaster.facebook.com
Last fetched
postmaster.facebook.com resolves to 3 IPv4 addresses operated by AS31483 in RU.
Nutrition Label
Resolution chain
postmaster.facebook.com resolves to 3 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
| IP | Prefix | ASN | Operator | Country |
|---|---|---|---|---|
| 188.186.146.208 | 188.186.144.0/22 | AS31483 | — | RU |
| 31.13.66.35 | 31.13.66.0/24 | AS32934 | FACEBOOK - Facebook, Inc. | SG |
| 57.144.196.1 | 57.144.196.0/23 | AS32934 | FACEBOOK - Facebook, Inc. | US |
WHOIS identity
No WHOIS records are currently associated with postmaster.facebook.com in WhisperGraph.
Web-graph footprint
Distinct hostnames that link to or from postmaster.facebook.com in the public web crawl.
7 sites link to this hostname.
Threat posture
History
Mail and authentication
SPF policy
1 SPF mechanism authorising senders for postmaster.facebook.com.
| Mechanism | Target |
|---|---|
| SPF_A | postmaster.facebook.com |
Related pages
Pivot deeper into the graph from postmaster.facebook.com.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "postmaster.facebook.com"})-[: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.