Organization
RCN
RCN-199-237-128
Location
Lanham
Maryland, United States (US)
Hostname
—
Geolocation
United States (US) United States
- Country
- United States (US)
- Region
- Maryland
- City
- Lanham
- Continent
- North America
- Coordinates
- 38.9685, -76.862 View on map ↗
Network Information
IP Range 199.237.128.0 – 199.237.255.255 CIDR 199.237.128.0/17 Network Name RCN-199-237-128 Handle NET-199-237-128-0-1 Type ASSIGNMENT Parent Network NET-199-236-0-0-1 Organization RCN Organization ID C11598224 Address 21715 Filigree Court, Ashburn, VA, 20147, United States Country United States (US) Registry ARIN Registered On May 19, 2026 Last Updated May 19, 2026 Status
active
ASN & Routing
Origin AS AS6079 AS Name RCN-AS - RCN, US Announced Prefix 199.237.224.0/20 AS Registry ARIN Prefix Country United States (US) Allocated 1994-04-18 RPKI Origin Valid (covered by a matching ROA)
Reverse DNS
No PTR record is published for this address.
Abuse Contact
Raw RDAP Response
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "199.237.128.0",
"length": 17
}
],
"endAddress": "199.237.255.255",
"entities": [
{
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-03T12:35:26-05:00"
},
{
"eventAction": "registration",
"eventDate": "2005-12-02T11:16:33-05:00"
}
],
"handle": "NAAC-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NAAC-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
},
{
"href": "https://whois.arin.net/rest/poc/NAAC-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "8300 E Maplewood Ave.\nSuite 400\nGreenwood Village\nCO\n80111\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"NTT America Abuse Contact"
],
[
"org",
{},
"text",
"NTT DATA"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-877-688-6625"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-13T13:49:02-04:00"
},
{
"eventAction": "registration",
"eventDate": "2005-12-02T11:16:39-05:00"
}
],
"handle": "NASC-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NASC-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
},
{
"href": "https://whois.arin.net/rest/poc/NASC-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "8300 E Maplewood Ave.\nSuite 400\nGreenwood Village\nCO\n80111\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"NTT America Support Contact"
],
[
"org",
{},
"text",
"NTT DATA"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-877-688-6625"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-30T10:20:56-05:00"
},
{
"eventAction": "registration",
"eventDate": "2005-12-02T11:16:27-05:00"
}
],
"handle": "VIPAR-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/VIPAR-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
},
{
"href": "https://whois.arin.net/rest/poc/VIPAR-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "8300 E Maplewood Ave.\nSuite 400\nGreenwood Village\nCO\n80111\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"VIPAR"
],
[
"org",
{},
"text",
"NTT DATA"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-877-688-6625"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-08T09:53:45-04:00"
},
{
"eventAction": "registration",
"eventDate": "2006-09-05T19:36:06-04:00"
}
],
"handle": "PEERI-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PEERI-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
},
{
"href": "https://whois.arin.net/rest/poc/PEERI-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "8300 E Maplewood Ave.\nSuite 400\nGreenwood Village\nCO\n80111\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Peering"
],
[
"org",
{},
"text",
"NTT Ltd."
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-877-688-6625"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-05T08:01:48-05:00"
},
{
"eventAction": "registration",
"eventDate": "2023-02-06T12:21:20-05:00"
}
],
"handle": "CANDE70-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CANDE70-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
},
{
"href": "https://whois.arin.net/rest/poc/CANDE70-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-03-04T14:28:21-05:00"
},
{
"eventAction": "registration",
"eventDate": "2005-12-08T12:04:23-05:00"
}
],
"handle": "NTTAM-1",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NTTAM-1",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
},
{
"href": "https://whois.arin.net/rest/org/NTTAM-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"NTT America, Inc."
],
[
"adr",
{
"label": "15809 Bear Creek Pkwy\nSuite 320\nRedmond\nWA\n98052\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-19T12:57:44-04:00"
},
{
"eventAction": "registration",
"eventDate": "2026-05-19T12:57:44-04:00"
}
],
"handle": "C11598224",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/C11598224",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
},
{
"href": "https://whois.arin.net/rest/customer/C11598224",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"RCN"
],
[
"adr",
{
"label": "21715 Filigree Court\nAshburn\nVA\n20147\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-19T12:57:45-04:00"
},
{
"eventAction": "registration",
"eventDate": "2026-05-19T12:57:44-04:00"
}
],
"handle": "NET-199-237-128-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/199.237.128.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
},
{
"href": "https://whois.arin.net/rest/net/NET-199-237-128-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
},
{
"href": "https://rdap.arin.net/registry/ip/199.236.0.0/14",
"rel": "up",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/199.237.224.0"
}
],
"name": "RCN-199-237-128",
"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/ip/199.237.224.0"
}
],
"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/ip/199.237.224.0"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-199-236-0-0-1",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "199.237.128.0",
"status": [
"active"
],
"type": "ASSIGNMENT"
} Contact details of private individuals are redacted.