170.121.0.0/16
🇺🇸CIDR
170.121.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Washington D.C. (Southwest Washington)
RIR
ARIN
Status
allocated
Allocated
4/18/1994
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
6 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 170.121.8.0/21 | AS17190ASN17190 - Washington Metropolitan Area Transit Authority | No ROA | — | 5/31/2026 |
| 170.121.12.0/22 | AS17190ASN17190 - Washington Metropolitan Area Transit Authority | No ROA | — | 5/31/2026 |
| 170.121.68.0/22 | AS17190ASN17190 - Washington Metropolitan Area Transit Authority | No ROA | — | 5/31/2026 |
| 170.121.192.0/22 | AS17190ASN17190 - Washington Metropolitan Area Transit Authority | No ROA | — | 5/31/2026 |
| 170.121.244.0/22 | AS17190ASN17190 - Washington Metropolitan Area Transit Authority | No ROA | — | 5/31/2026 |
| 170.121.252.0/22 | AS17190ASN17190 - Washington Metropolitan Area Transit Authority | No ROA | — | 5/31/2026 |
Geolocation
Country🇺🇸United StatesUS
RegionDistrict of Columbia
CityWashington D.C. (Southwest Washington)
Coordinates38.8852, -77.0214 ↗
API
Open https://api.ipctl.io/v1/prefix/170.121.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/170.121.0.0/16" | jq
External Links