128.239.0.0/17
🇺🇸CIDR
128.239.0.0/17
IP Version
IPv4
Addresses
32.7K
Mask
/17 (255.255.128.0)
Country
🇺🇸 United States
City
Williamsburg
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 128.239.0.0/17 | AS11975WM - The College of William and Mary | No ROA | RADB | 5/30/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 128.239.0.0/16 | AS11975WM - The College of William and Mary | No ROA | — | 5/30/2026 |
| 128.239.1.0/24 | AS11975WM - The College of William and Mary | No ROA | — | 5/30/2026 |
| 128.239.33.0/24 | AS11975WM - The College of William and Mary | No ROA | — | 5/30/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS11975 | RADB | MAINT-AS11975 | 11/13/2023 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/128.239.0.0/17Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/128.239.0.0/17" | jq
External Links