170.28.136.0/21
🇺🇸CIDR
170.28.136.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
New York
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 170.28.136.0/21 | AS12187MTAHQ1 - Metropolitan Transportation Authority | No ROA | — | 5/31/2026 |
Covering Prefix
6 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 170.28.136.0/24 | AS12187MTAHQ1 - Metropolitan Transportation Authority | No ROA | — | 5/31/2026 |
| 170.28.137.0/24 | AS12187MTAHQ1 - Metropolitan Transportation Authority | No ROA | — | 5/31/2026 |
| 170.28.139.0/24 | AS12187MTAHQ1 - Metropolitan Transportation Authority | No ROA | — | 5/31/2026 |
| 170.28.140.0/24 | AS12187MTAHQ1 - Metropolitan Transportation Authority | No ROA | — | 5/31/2026 |
| 170.28.142.0/24 | AS12187MTAHQ1 - Metropolitan Transportation Authority | No ROA | — | 5/31/2026 |
| 170.28.143.0/24 | AS12187MTAHQ1 - Metropolitan Transportation Authority | No ROA | — | 5/31/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/170.28.136.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/170.28.136.0/21" | jq
External Links