131.230.0.0/16
🇺🇸IPv4ARINallocatedAS15119SOUTHERN-ILLINOIS-UNIVERSITY - Southern Illinois University CarbondaleNo ROA
CIDR
131.230.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Carbondale
RIR
ARIN
Status
allocated
Allocated
1/30/1989
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 131.230.0.0/16 | AS15119SOUTHERN-ILLINOIS-UNIVERSITY - Southern Illinois University Carbondale | No ROA | — | 5/31/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 131.230.224.0/20 | AS15118SIUMED - Southern Illinois University - School of Medicine | No ROA | — | 5/31/2026 |
| 131.230.228.0/22 | AS15118SIUMED - Southern Illinois University - School of Medicine | No ROA | — | 5/31/2026 |
| 131.230.236.0/22 | AS15118SIUMED - Southern Illinois University - School of Medicine | No ROA | — | 5/31/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/131.230.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/131.230.0.0/16" | jq
External Links