Organization
U.S. National Science Foundation
NSF
Location
Alexandria (Eisenhower East)
Virginia, United States (US)
Hostname
—
Geolocation
United States (US) United States
- Country
- United States (US)
- Region
- Virginia
- City
- Alexandria (Eisenhower East)
- Continent
- North America
- Coordinates
- 38.8018, -77.0702 View on map ↗
Network Information
IP Range 192.12.209.0 – 192.12.209.255 CIDR 192.12.209.0/24 Network Name NSF Handle NET-192-12-209-0-1 Type DIRECT ALLOCATION Parent Network NET-192-0-0-0-0 Organization U.S. National Science Foundation Organization ID NSF Address Randolph Building, 401 Dulany Street, Alexandria, VA, 22314, United States Country United States (US) Registry ARIN Registered On Dec 17, 1987 Last Updated Feb 11, 2025 Status
active
ASN & Routing
Origin AS AS102 AS Name NSF-HQ-AS - U.S. National Science Foundation, US Announced Prefix 192.12.209.0/24 AS Registry ARIN Prefix Country United States (US) Allocated 1987-12-17 RPKI Origin Not found (no ROA covers this prefix)
Reverse DNS
No PTR record is published for this address.
Abuse Contact
Raw RDAP Response
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "192.12.209.0",
"length": 24
}
],
"endAddress": "192.12.209.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-18T09:34:38-04:00"
},
{
"eventAction": "registration",
"eventDate": "2010-06-25T08:17:46-04:00"
}
],
"handle": "NSFAB-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NSFAB-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/192.12.209.0"
},
{
"href": "https://whois.arin.net/rest/poc/NSFAB-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/192.12.209.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "2415 Eisenhower Ave\nAlexandria\nVA\n22314\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"NSF Abuse"
],
[
"org",
{},
"text",
"National Science Foundation"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-703-292-5050"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-18T09:34:42-04:00"
},
{
"eventAction": "registration",
"eventDate": "2010-06-25T08:29:35-04:00"
}
],
"handle": "NSFNO-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NSFNO-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/192.12.209.0"
},
{
"href": "https://whois.arin.net/rest/poc/NSFNO-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/192.12.209.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "2415 Eisenhower Ave\nAlexandria\nVA\n22314\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"NSF NOC"
],
[
"org",
{},
"text",
"National Science Foundation"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-703-292-5050"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-22T08:14:45-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-05-22T11:33:26-04:00"
}
],
"handle": "ORGOW-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ORGOW-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/192.12.209.0"
},
{
"href": "https://whois.arin.net/rest/poc/ORGOW-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/192.12.209.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"dns",
"abuse",
"noc",
"administrative",
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "2415 Eisenhower Ave\nAlexandria\nVA\n22314\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Org-Owner"
],
[
"org",
{},
"text",
"U.S. National Science Foundation"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-703-292-4223"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-13T09:24:09-04:00"
}
],
"handle": "NSF",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NSF",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/192.12.209.0"
},
{
"href": "https://whois.arin.net/rest/org/NSF",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/192.12.209.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"U.S. National Science Foundation"
],
[
"adr",
{
"label": "Randolph Building\n401 Dulany Street\nAlexandria\nVA\n22314\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-02-11T11:35:44-05:00"
},
{
"eventAction": "registration",
"eventDate": "1987-12-17T00:00:00-05:00"
}
],
"handle": "NET-192-12-209-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/192.12.209.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/192.12.209.0"
},
{
"href": "https://whois.arin.net/rest/net/NET-192-12-209-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/192.12.209.0"
}
],
"name": "NSF",
"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/ip/192.12.209.0"
}
],
"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/ip/192.12.209.0"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-192-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "192.12.209.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
} Contact details of private individuals are redacted.