146.189.0.0/16
🇺🇸CIDR
146.189.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Hamilton
RIR
ARIN
Status
allocated
Allocated
2/26/1991
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 146.189.0.0/16 | AS5724UMASSMED - University of Massachusetts Medical School | No ROA | ARIN | 6/1/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 146.189.128.0/21 | AS5724UMASSMED - University of Massachusetts Medical School | No ROA | — | 6/1/2026 |
| 146.189.25.0/24 | AS5724UMASSMED - University of Massachusetts Medical School | No ROA | — | 6/1/2026 |
| 146.189.26.0/24 | AS5724UMASSMED - University of Massachusetts Medical School | No ROA | — | 6/1/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/146.189.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/146.189.0.0/16" | jq
External Links