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
AS3713
ICFCONSULTINGGROUPINC - ICF International Announcing routesAS nameICFCONSULTINGGROUPINC
OrganisationICF International
Registry (RIR)ARIN
HandleAS3713
RangeAS3713
Registered13 Jul 1994
Last changed17 Jan 2014
Abuse contact[email protected]
17IPv4 prefixes
2IPv6 prefixes
3Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS20355 | NTG-AS - REV | 546 |
| AS3356 | LEVEL3 - Level 3 Parent, LLC | 261 |
| AS393423 | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 255 |
Downstreams
None seen.
IPv4 prefixes (17)
IPv6 prefixes (2)
RPKI-validate all prefixes of AS3713
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | ICF International | ICG-67 | 1902 Reston Metro Plaza, Reston, VA, 20190, United States | |
| noc, abuse, administrative, technical | ICF ARIN | ARINI2-ARIN | [email protected], +1-703-934-3000 | 1902 Reston Metro Plaza, Reston, VA, 20190, United States |
Raw registry response
{
"endAutnum": 3713,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-08-05T08:03:05-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-11-04T12:02:17-05:00"
}
],
"handle": "ARINI2-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ARINI2-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3713"
},
{
"href": "https://whois.arin.net/rest/poc/ARINI2-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3713"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc",
"abuse",
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1902 Reston Metro Plaza\nReston\nVA\n20190\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"ICF ARIN"
],
[
"n",
[],
"text",
[
"ARIN",
"ICF",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-703-934-3000"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-08-03T12:17:30-04:00"
},
{
"eventAction": "registration",
"eventDate": "2013-12-05T20:11:03-05:00"
}
],
"handle": "ICG-67",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ICG-67",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3713"
},
{
"href": "https://whois.arin.net/rest/org/ICG-67",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3713"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"ICF International"
],
[
"adr",
{
"label": "1902 Reston Metro Plaza\nReston\nVA\n20190\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2014-01-16T17:01:55-05:00"
},
{
"eventAction": "registration",
"eventDate": "1994-07-13T00:00:00-04:00"
}
],
"handle": "AS3713",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/3713",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3713"
},
{
"href": "https://whois.arin.net/rest/asn/AS3713",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3713"
}
],
"name": "ICFCONSULTINGGROUPINC",
"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/3713"
}
],
"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/3713"
}
],
"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": 3713,
"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.