Organization
Grand Central Networks Inc.
GCN-AS
Registered
Aug 27, 1997
29 years ago
IPv4 Prefixes
6
1,536 addresses
IPv6 Prefixes
0
BGP Neighbours
2
2 upstream/peer · 0 downstream
Registration
AS Number AS10493 AS Name GCN-AS Organization Grand Central Networks Inc. Organization ID GCN-13 Address 194 Main Street, 2NW, Norwalk, CT, 06851, United States Country United States (US) Registry ARIN Allocated Aug 27, 1997 Record Created Aug 27, 1997 Last Updated Aug 27, 1997 Status
active
WHOIS Server whois.arin.net AS Description GCN-AS - Grand Central Networks Inc., US Abuse Email [email protected] Abuse Phone +1-203-665-6211 IPv4 Prefixes
6 prefixes · 1,536 addresses Routing data as of 2026-10-13 08:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 50.31.163.0/24 | 50.31.163.0 – 50.31.163.255 | 256 |
| 74.201.43.0/24 | 74.201.43.0 – 74.201.43.255 | 256 |
| 172.81.88.0/24 | 172.81.88.0 – 172.81.88.255 | 256 |
| 172.81.89.0/24 | 172.81.89.0 – 172.81.89.255 | 256 |
| 172.81.90.0/24 | 172.81.90.0 – 172.81.90.255 | 256 |
| 172.81.91.0/24 | 172.81.91.0 – 172.81.91.255 | 256 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
2 unique neighbours · 2 upstream/peer · 0 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Upstream & peer side (2)
Raw RDAP Response
{
"endAutnum": 10493,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-08-21T12:39:44-04:00"
},
{
"eventAction": "registration",
"eventDate": "1996-02-22T21:38:35-05:00"
}
],
"handle": "SF509-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SF509-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/10493"
},
{
"href": "https://whois.arin.net/rest/poc/SF509-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/10493"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2025-08-21"
],
"title": "Unvalidated POC"
}
],
"roles": [
"administrative",
"abuse",
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "11555 Heron Bay Boulevard\nCoral Springs\nFL\n33076\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Sean Fulton"
],
[
"n",
{},
"text",
[
"Fulton",
"Sean",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-203-665-6211"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2015-05-12T13:20:48-04:00"
},
{
"eventAction": "registration",
"eventDate": "1997-08-27T00:00:00-04:00"
}
],
"handle": "GCN-13",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/GCN-13",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/10493"
},
{
"href": "https://whois.arin.net/rest/org/GCN-13",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/10493"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Grand Central Networks Inc."
],
[
"adr",
{
"label": "194 Main Street, 2NW\nNorwalk\nCT\n06851\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-08-21T12:39:44-04:00"
},
{
"eventAction": "registration",
"eventDate": "1996-02-22T21:38:35-05:00"
}
],
"handle": "SF509-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SF509-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/10493"
},
{
"href": "https://whois.arin.net/rest/poc/SF509-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/10493"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2025-08-21"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "1997-08-27T08:40:39-04:00"
},
{
"eventAction": "registration",
"eventDate": "1997-08-27T00:00:00-04:00"
}
],
"handle": "AS10493",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/10493",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/10493"
},
{
"href": "https://whois.arin.net/rest/asn/AS10493",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/10493"
}
],
"name": "GCN-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/10493"
}
],
"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/10493"
}
],
"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": 10493,
"status": [
"active"
]
} Contact details of private individuals are redacted.