AS12187
Metropolitan Transportation Authority
ARIN US active Announced
More ASNs in the United States → Organization
Metropolitan Transportation Authority
MTAHQ1
Registered
Apr 13, 1999
27 years ago
IPv4 Prefixes
14
20,992 addresses
IPv6 Prefixes
0
BGP Neighbours
4
4 upstream/peer · 0 downstream
Registration
AS Number AS12187 AS Name MTAHQ1 Organization Metropolitan Transportation Authority Organization ID MTA-41 Address 345 Madison Ave 15th flr, New York, NY, 10017, United States Country United States (US) Registry ARIN Allocated Apr 13, 1999 Record Created Apr 13, 1999 Last Updated Mar 02, 2012 Status
active
WHOIS Server whois.arin.net AS Description MTAHQ1 - Metropolitan Transportation Authority, US Abuse Email [email protected] Abuse Phone +1-212-878-1007 IPv4 Prefixes
14 prefixes · 20,992 addresses · 5 top-level Routing data as of 2026-10-08 00:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 170.28.16.0/23 | 170.28.16.0 – 170.28.17.255 | 512 |
| 170.28.16.0/24 | 170.28.16.0 – 170.28.16.255 | 256 |
| 170.28.17.0/24 | 170.28.17.0 – 170.28.17.255 | 256 |
| 170.28.32.0/19 | 170.28.32.0 – 170.28.63.255 | 8,192 |
| 170.28.64.0/19 | 170.28.64.0 – 170.28.95.255 | 8,192 |
| 170.28.64.0/24 | 170.28.64.0 – 170.28.64.255 | 256 |
| 170.28.128.0/21 | 170.28.128.0 – 170.28.135.255 | 2,048 |
| 170.28.128.0/24 | 170.28.128.0 – 170.28.128.255 | 256 |
| 170.28.136.0/21 | 170.28.136.0 – 170.28.143.255 | 2,048 |
| 170.28.136.0/24 | 170.28.136.0 – 170.28.136.255 | 256 |
| 170.28.137.0/24 | 170.28.137.0 – 170.28.137.255 | 256 |
| 170.28.139.0/24 | 170.28.139.0 – 170.28.139.255 | 256 |
| 170.28.140.0/24 | 170.28.140.0 – 170.28.140.255 | 256 |
| 170.28.142.0/24 | 170.28.142.0 – 170.28.142.255 | 256 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
4 unique neighbours · 4 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 (4)
Raw RDAP Response
{
"endAutnum": 12187,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "1999-04-13T18:51:11-04:00"
},
{
"eventAction": "registration",
"eventDate": "1998-12-03T13:28:11-05:00"
}
],
"handle": "PB130-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PB130-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12187"
},
{
"href": "https://whois.arin.net/rest/poc/PB130-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12187"
}
],
"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 2010-06-19"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical",
"administrative",
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "345 Madison Ave 15flr\nNew York\nNY\n10017\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Pierre Bernard"
],
[
"n",
{},
"text",
[
"Bernard",
"Pierre",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-212-878-1007"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+1-212-599-4046"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-09-29T13:05:03-04:00"
},
{
"eventAction": "registration",
"eventDate": "1999-04-13T00:00:00-04:00"
}
],
"handle": "MTA-41",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MTA-41",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12187"
},
{
"href": "https://whois.arin.net/rest/org/MTA-41",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12187"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Metropolitan Transportation Authority"
],
[
"adr",
{
"label": "345 Madison Ave 15th flr\nNew York\nNY\n10017\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "1999-04-13T18:51:11-04:00"
},
{
"eventAction": "registration",
"eventDate": "1998-12-03T13:28:11-05:00"
}
],
"handle": "PB130-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PB130-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12187"
},
{
"href": "https://whois.arin.net/rest/poc/PB130-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12187"
}
],
"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 2010-06-19"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2012-03-02T08:03:18-05:00"
},
{
"eventAction": "registration",
"eventDate": "1999-04-13T00:00:00-04:00"
}
],
"handle": "AS12187",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/12187",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12187"
},
{
"href": "https://whois.arin.net/rest/asn/AS12187",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12187"
}
],
"name": "MTAHQ1",
"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/12187"
}
],
"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/12187"
}
],
"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": 12187,
"status": [
"active"
]
} Contact details of private individuals are redacted.