128.187.0.0/16
🇺🇸CIDR
128.187.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Boulder (Central Boulder)
RIR
ARIN
Status
allocated
Allocated
1/7/1987
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 128.187.0.0/16 | AS6510BYU - Brigham Young University | No ROA | RADB | 5/30/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS6510 | RADB | MAINT-AS210 | 11/13/2023 |
Origin ASN
AS6510
BYU - Brigham Young University
Geolocation
API
Open https://api.ipctl.io/v1/prefix/128.187.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/128.187.0.0/16" | jq
External Links