146.189.128.0/21
🇺🇸CIDR
146.189.128.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
Worcester (Biotech Park Area)
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 146.189.128.0/21 | AS5724UMASSMED - University of Massachusetts Medical School | No ROA | — | 6/1/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 146.189.0.0/16 | AS5724UMASSMED - University of Massachusetts Medical School | No ROA | — | 6/1/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS398427 | RADB | MAINT-AS27506 | 7/3/2024 |
Geolocation
Country🇺🇸United StatesUS
RegionMassachusetts
CityWorcester (Biotech Park Area)
Coordinates42.2751, -71.7621 ↗
API
Open https://api.ipctl.io/v1/prefix/146.189.128.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/146.189.128.0/21" | jq
External Links