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
AS40889
GREYSTONE - Greystone IT, Inc. Announcing routesAS nameGREYSTONE
OrganisationGreystone IT, Inc.
Registry (RIR)ARIN
HandleAS40889
RangeAS40889
Registered14 May 2008
Last changed24 Feb 2012
2IPv4 prefixes
0IPv6 prefixes
2Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS10913 | INTERNAP-BLK - Unitas Global | 76 |
| AS174 | COGENT-174 - Cogent Communications, LLC | 69 |
Downstreams
None seen.
IPv4 prefixes (2)
RPKI-validate all prefixes of AS40889
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Greystone IT, Inc. | GREYS-6 | 419 Belle Air Lane, Warrenton, VA, 20186, United States | |
| abuse, administrative, technical | Admin | ADMIN1354-ARIN | [email protected], [email protected], [email protected], +1-540-341-2100 | 419 Belle Air Lane, Warrenton, VA, 20186, United States |
| technical, abuse | Admin | ADMIN1354-ARIN | [email protected], [email protected], [email protected], +1-540-341-2100 | 419 Belle Air Lane, Warrenton, VA, 20186, United States |
Raw registry response
{
"endAutnum": 40889,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-08T09:46:22-04:00"
},
{
"eventAction": "registration",
"eventDate": "2008-04-15T16:31:36-04:00"
}
],
"handle": "ADMIN1354-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ADMIN1354-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40889"
},
{
"href": "https://whois.arin.net/rest/poc/ADMIN1354-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40889"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "419 Belle Air Lane\nWarrenton\nVA\n20186\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Admin"
],
[
"org",
[],
"text",
"Greystone IT, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-540-341-2100"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2011-09-24T08:30:57-04:00"
},
{
"eventAction": "registration",
"eventDate": "2008-04-16T15:48:00-04:00"
}
],
"handle": "GREYS-6",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/GREYS-6",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40889"
},
{
"href": "https://whois.arin.net/rest/org/GREYS-6",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40889"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Greystone IT, Inc."
],
[
"adr",
{
"label": "419 Belle Air Lane\nWarrenton\nVA\n20186\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-08T09:46:22-04:00"
},
{
"eventAction": "registration",
"eventDate": "2008-04-15T16:31:36-04:00"
}
],
"handle": "ADMIN1354-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ADMIN1354-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40889"
},
{
"href": "https://whois.arin.net/rest/poc/ADMIN1354-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40889"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "419 Belle Air Lane\nWarrenton\nVA\n20186\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Admin"
],
[
"org",
[],
"text",
"Greystone IT, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-540-341-2100"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2012-02-24T09:44:34-05:00"
},
{
"eventAction": "registration",
"eventDate": "2008-05-13T17:52:26-04:00"
}
],
"handle": "AS40889",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/40889",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40889"
},
{
"href": "https://whois.arin.net/rest/asn/AS40889",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40889"
}
],
"name": "GREYSTONE",
"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/40889"
}
],
"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/40889"
}
],
"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": 40889,
"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.
