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Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
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AS501
AFCONC-BLOCK1-AS - Air Force Systems Networking Announcing routesAS nameAFCONC-BLOCK1-AS
OrganisationAir Force Systems Networking
Registry (RIR)ARIN
HandleAS379
RangeAS379 – AS508
Registered04 Aug 1989
Last changed06 Jun 2008
Abuse contact[email protected]
4IPv4 prefixes
0IPv6 prefixes
1Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS54355 | MULTCO - NETWORK SERVICES | 222 |
Downstreams
None seen.
IPv4 prefixes (4)
RPKI-validate all prefixes of AS501
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Air Force Systems Networking | 7ESG | 501 EAST MOORE DR. BLDG 884 RM 1100 GUNTHER ANNEX, MAXWELL AFB, AL, 36114, United States | |
| technical, abuse, administrative | Registration | REGIS10-ARIN | [email protected], +1-844-347-2457;ext2 | DISA-Columbus, 300 North James Road, Whitehall, OH, 43213, United States |
Raw registry response
{
"endAutnum": 508,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-12T13:52:28-05:00"
},
{
"eventAction": "registration",
"eventDate": "2009-06-24T09:41:15-04:00"
}
],
"handle": "REGIS10-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/REGIS10-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/501"
},
{
"href": "https://whois.arin.net/rest/poc/REGIS10-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/501"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"abuse",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "DISA-Columbus\n300 North James Road\nWhitehall\nOH\n43213\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Registration"
],
[
"org",
[],
"text",
"DoD Network Information Center"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-844-347-2457;ext2"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-12T11:30:15-04:00"
},
{
"eventAction": "registration",
"eventDate": "2008-06-05T10:28:10-04:00"
}
],
"handle": "7ESG",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/7ESG",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/501"
},
{
"href": "https://whois.arin.net/rest/org/7ESG",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/501"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Air Force Systems Networking"
],
[
"adr",
{
"label": "501 EAST MOORE DR. BLDG 884 RM 1100 GUNTHER ANNEX\nMAXWELL AFB\nAL\n36114\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2008-06-06T09:57:55-04:00"
},
{
"eventAction": "registration",
"eventDate": "1989-08-04T00:00:00-04:00"
}
],
"handle": "AS379",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/379",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/501"
},
{
"href": "https://whois.arin.net/rest/asn/AS379",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/501"
}
],
"name": "AFCONC-BLOCK1-AS",
"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/501"
}
],
"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/501"
}
],
"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": 379,
"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.