172.84.136.0/21
🇺🇸CIDR
172.84.136.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
Dallas
RIR
ARIN
Status
allocated
Allocated
1/23/2018
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 172.84.136.0/21 | AS395610NXST-AS395610 - Nexstar Broadcasting Inc. | No ROA | ARIN | 5/30/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 172.84.140.0/23 | AS395610NXST-AS395610 - Nexstar Broadcasting Inc. | No ROA | — | 5/30/2026 |
| 172.84.142.0/23 | AS395610NXST-AS395610 - Nexstar Broadcasting Inc. | No ROA | — | 5/30/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS395610 | ARIN | MNT-NB-180 | 5/6/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/172.84.136.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/172.84.136.0/21" | jq
External Links