128.237.0.0/16
🇺🇸CIDR
128.237.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Pittsburgh (Squirrel Hill North)
RIR
ARIN
Status
allocated
Allocated
5/6/1987
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 128.237.0.0/16 | AS9CMU-ROUTER - Carnegie Mellon University | No ROA | RADB | 6/1/2026 |
Geolocation
Country🇺🇸United StatesUS
RegionPennsylvania
CityPittsburgh (Squirrel Hill North)
Coordinates40.4443, -79.9439 ↗
API
Open https://api.ipctl.io/v1/prefix/128.237.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/128.237.0.0/16" | jq
External Links