71.57.128.0/18
🇺🇸CIDR
71.57.128.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇺🇸 United States
City
Aventura
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 71.57.128.0/18 | AS20214COMCAST-20214 - Comcast Cable Communications, LLC | Valid | RADB | 6/13/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 71.56.0.0/13 | AS7922COMCAST-7922 - Comcast Cable Communications, LLC | Valid | — | 6/13/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/71.57.128.0/18Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/71.57.128.0/18" | jq
External Links