Hostname
nih.gov
Last fetched
nih.gov resolves to 1 IPv4 address operated by NIH-NET - National Institutes of Health in US.
Nutrition Label
Resolution chain
nih.gov 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 |
|---|---|---|---|---|
| 156.40.212.210 | 156.40.0.0/16 | AS3527 | NIH-NET - National Institutes of Health | US |
WHOIS identity
No WHOIS records are currently associated with nih.gov in WhisperGraph.
Subdomains
555 observed subdomains of nih.gov.
Showing 25 of 555. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from nih.gov in the public web crawl.
43,334 sites link to this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
11 SPF mechanisms authorising senders for nih.gov.
| Mechanism | Target |
|---|---|
| SPF_INCLUDE | spf.protection.outlook.com |
| SPF_IP | 128.231.89.192/28 |
| SPF_IP | 128.231.90.64/26 |
| SPF_IP | 156.40.79.128/25 |
| SPF_IP | 165.112.13.0/26 |
| SPF_IP | 165.112.194.0/25 |
| SPF_IP | 165.112.69.16/28 |
| SPF_IP | 2607:f220:0404:8104::0/64 |
| SPF_IP | 2607:f220:402:12e::/64 |
| SPF_IP | 2607:f220:402:1a01::0/64 |
| SPF_IP | 2607:f220:404:12e::/64 |
Related pages
Pivot deeper into the graph from nih.gov.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "nih.gov"})-[: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.