Free network tools
AS WHOIS
Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
Network Report (All-in-one) BGP Looking Glass BGP Security Check RPKI Validator BGP Hijack & Leak Monitor ASN Intelligence Internet Outages & Anomalies Country Internet Report Domain Insights IP WHOIS AS WHOIS
AS3527
NIH-NET - National Institutes of Health Announcing routesAS nameNIH-NET
OrganisationNational Institutes of Health
Registry (RIR)ARIN
HandleAS3527
RangeAS3527
Registered07 Apr 1994
Last changed29 Oct 2022
Abuse contact[email protected]
12IPv4 prefixes
1IPv6 prefixes
2Upstreams
1Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS19050 | TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services | 576 |
| AS10886 | MAX-GIGAPOP - University of Maryland | 157 |
Downstreams
| AS | Network name | Visibility |
|---|---|---|
| AS6150 | NCIFCRF - National Cancer Institute | 226 |
IPv4 prefixes (12)
IPv6 prefixes (1)
RPKI-validate all prefixes of AS3527
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | National Institutes of Health | NIH-Z | 9000 Rockville Pike, MSC 4805, Bethesda, MD, 20892-4805, United States | |
| noc, administrative, dns | NIHadm | NIHAD-ARIN | [email protected], +1-301-402-3141 | 6555 Rock Sping DrRM 3se21m MSC 4805, Bethesda, MD, 20892-4805, United States |
| technical, routing, abuse | NIHtechs | NIHTE-ARIN | [email protected], +1-301-402-3141 | 6555 Rock Sping Dr, RM 3se21m MSC 4805, Bethesda, MD, 20892-4805, United States |
Raw registry response
{
"endAutnum": 3527,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-08T09:19:17-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-08-11T15:08:58-04:00"
}
],
"handle": "NIHAD-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NIHAD-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3527"
},
{
"href": "https://whois.arin.net/rest/poc/NIHAD-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3527"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"NIHnet administrator"
],
"title": "Registration Comments"
}
],
"roles": [
"noc",
"administrative",
"dns"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "6555 Rock Sping DrRM 3se21m MSC 4805\nBethesda\nMD\n20892-4805\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"NIHadm"
],
[
"org",
[],
"text",
"National Institutes of Health"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-301-402-3141"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-08T09:19:55-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-06-24T17:20:41-04:00"
}
],
"handle": "NIHTE-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NIHTE-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3527"
},
{
"href": "https://whois.arin.net/rest/poc/NIHTE-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3527"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"routing",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "6555 Rock Sping Dr\nRM 3se21m MSC 4805\nBethesda\nMD\n20892-4805\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"NIHtechs"
],
[
"org",
[],
"text",
"National Institutes of Health"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-301-402-3141"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-06-05T14:45:07-04:00"
},
{
"eventAction": "registration",
"eventDate": "2022-10-09T12:36:37-04:00"
}
],
"handle": "NIH-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NIH-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3527"
},
{
"href": "https://whois.arin.net/rest/org/NIH-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3527"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"National Institutes of Health"
],
[
"adr",
{
"label": "9000 Rockville Pike\nMSC 4805\nBethesda\nMD\n20892-4805\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-10-28T18:34:12-04:00"
},
{
"eventAction": "registration",
"eventDate": "1994-04-07T00:00:00-04:00"
}
],
"handle": "AS3527",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/3527",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3527"
},
{
"href": "https://whois.arin.net/rest/asn/AS3527",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3527"
}
],
"name": "NIH-NET",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/3527"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/3527"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 3527,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.