Autonomous System
AS12187 Metropolitan Transportation Authority
GovernmentActiveUnited StatesARIN
AS12187 (MTAHQ1) is a government network operated by Metropolitan Transportation Authority in United States, registered with ARIN. It has 14 IPv4 prefixes with 23,296 addresses, which makes it the 6,279th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses23,296in 14 prefixes
IPv6 prefixes0none
Size rank#6,279of 82,200 active ASNs
Details
OrganizationMetropolitan Transportation Authority
AS nameMTAHQ1
Websitemta.info
Country United States (US)
Network typeGovernment
RegistryARIN
Abuse contactpbernard@mtahq.org
Registered1999-04-13
Last updated2012-03-02
IPv4 prefixes
14 prefixes · 23,296 addresses| Network | Addresses | First – last address |
|---|---|---|
| 170.28.32.0/19 | 8,192 | 170.28.32.0 – 170.28.63.255 |
| 170.28.64.0/19 | 8,192 | 170.28.64.0 – 170.28.95.255 |
| 170.28.128.0/21 | 2,048 | 170.28.128.0 – 170.28.135.255 |
| 170.28.136.0/21 | 2,048 | 170.28.136.0 – 170.28.143.255 |
| 170.28.16.0/23 | 512 | 170.28.16.0 – 170.28.17.255 |
| 170.28.16.0/24 | 256 | 170.28.16.0 – 170.28.16.255 |
| 170.28.17.0/24 | 256 | 170.28.17.0 – 170.28.17.255 |
| 170.28.64.0/24 | 256 | 170.28.64.0 – 170.28.64.255 |
| 170.28.128.0/24 | 256 | 170.28.128.0 – 170.28.128.255 |
| 170.28.136.0/24 | 256 | 170.28.136.0 – 170.28.136.255 |
| 170.28.137.0/24 | 256 | 170.28.137.0 – 170.28.137.255 |
| 170.28.139.0/24 | 256 | 170.28.139.0 – 170.28.139.255 |
| 170.28.140.0/24 | 256 | 170.28.140.0 – 170.28.140.255 |
| 170.28.142.0/24 | 256 | 170.28.142.0 – 170.28.142.255 |
170.28.32.0/19 170.28.64.0/19 170.28.128.0/21 170.28.136.0/21 170.28.16.0/23 170.28.16.0/24 170.28.17.0/24 170.28.64.0/24 170.28.128.0/24 170.28.136.0/24 170.28.137.0/24 170.28.139.0/24 170.28.140.0/24 170.28.142.0/24
IPv6 prefixes
No IPv6 prefixes.
Query AS12187 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS12187&key=YOUR_API_KEY"Any address in its prefixes resolves to AS12187, with or without a key:
curl "https://api.ipapi.is/?q=170.28.32.1"Largest networks in United States
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