209.237.0.0/18
🇺🇸CIDR
209.237.0.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇺🇸 United States
City
San Jose (Berryessa)
RIR
ARIN
Status
allocated
Allocated
6/17/1998
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.237.0.0/18 | AS17403HSIS-AS - HyperSurf Internet Services, Inc. | No ROA | ARIN | 5/31/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.237.61.0/24 | AS17403HSIS-AS - HyperSurf Internet Services, Inc. | No ROA | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS17403 | ARIN | MNT-HSIS | - |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/209.237.0.0/18Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/209.237.0.0/18" | jq
External Links