Organization
NatWest Markets Securities Inc.
GREENWICH
Registered
Feb 16, 2000
26 years ago
IPv4 Prefixes
3
768 addresses
IPv6 Prefixes
0
BGP Neighbours
2
2 upstream/peer · 0 downstream
Registration
AS Number AS14864 AS Name GREENWICH Organization NatWest Markets Securities Inc. Organization ID GCM-30 Address 600 Washington Blvd, Stamford, CT, 06901, United States Country United States (US) Registry ARIN Allocated Feb 16, 2000 Record Created Feb 16, 2000 Last Updated Mar 02, 2025 Status
active
WHOIS Server whois.arin.net AS Description GREENWICH - NatWest Markets Securities Inc., US Abuse Email [email protected] Abuse Phone +1-203-897-6085 IPv4 Prefixes
3 prefixes · 768 addresses Routing data as of 2026-10-16 16:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 146.121.20.0/24 | 146.121.20.0 – 146.121.20.255 | 256 |
| 146.121.21.0/24 | 146.121.21.0 – 146.121.21.255 | 256 |
| 146.121.23.0/24 | 146.121.23.0 – 146.121.23.255 | 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": 14864,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-15T14:49:33-05:00"
},
{
"eventAction": "registration",
"eventDate": "2024-07-31T10:37:15-04:00"
}
],
"handle": "ITCOM6-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ITCOM6-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/14864"
},
{
"href": "https://whois.arin.net/rest/poc/ITCOM6-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/14864"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "600 Washington Blvd\nStamford\nCT\n06901\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"itcomm@natwestmarkets"
],
[
"org",
{},
"text",
"Natwestmarkets"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-203-897-6085"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-30T08:54:21-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-02-28T19:25:15-05:00"
}
],
"handle": "FUSCO11-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/FUSCO11-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/14864"
},
{
"href": "https://whois.arin.net/rest/poc/FUSCO11-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/14864"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "600 Washington Blvd\n\nStamford \nCT\n06901\nUnited States"
},
"text",
[
"",
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"",
""
]
],
[
"fn",
{},
"text",
"Richard Fusco"
],
[
"n",
{},
"text",
[
"Fusco",
"Richard",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-203-897-6085"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-02-28T19:32:13-05:00"
},
{
"eventAction": "registration",
"eventDate": "2000-02-16T00:00:00-05:00"
}
],
"handle": "GCM-30",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/GCM-30",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/14864"
},
{
"href": "https://whois.arin.net/rest/org/GCM-30",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/14864"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"NatWest Markets Securities Inc."
],
[
"adr",
{
"label": "600 Washington Blvd\nStamford\nCT\n06901\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-30T08:54:21-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-02-28T19:25:15-05:00"
}
],
"handle": "FUSCO11-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/FUSCO11-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/14864"
},
{
"href": "https://whois.arin.net/rest/poc/FUSCO11-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/14864"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"noc",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "600 Washington Blvd\n\nStamford \nCT\n06901\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Richard Fusco"
],
[
"n",
{},
"text",
[
"Fusco",
"Richard",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-203-897-6085"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-03-02T08:03:34-05:00"
},
{
"eventAction": "registration",
"eventDate": "2000-02-16T00:00:00-05:00"
}
],
"handle": "AS14864",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/14864",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/14864"
},
{
"href": "https://whois.arin.net/rest/asn/AS14864",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/14864"
}
],
"name": "GREENWICH",
"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/14864"
}
],
"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/14864"
}
],
"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": 14864,
"status": [
"active"
]
} Contact details of private individuals are redacted.