138.23.0.0/16
🇺🇸CIDR
138.23.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Riverside (University Village)
RIR
ARIN
Status
allocated
Allocated
1/24/1990
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 138.23.0.0/16 | AS6106UCR-EDU - University of California, Riverside | No ROA | RADB | 5/31/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 138.23.104.0/22 | AS6106UCR-EDU - University of California, Riverside | No ROA | — | 5/31/2026 |
Geolocation
Country🇺🇸United StatesUS
RegionCalifornia
CityRiverside (University Village)
Coordinates33.9709, -117.3220 ↗
API
Open https://api.ipctl.io/v1/prefix/138.23.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/138.23.0.0/16" | jq
External Links