131.238.0.0/16
🇺🇸CIDR
131.238.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Dayton (University Park)
RIR
ARIN
Status
allocated
Allocated
2/3/1989
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 131.238.0.0/16 | AS32234UD-ACA-AS - University of Dayton | No ROA | RADB | 5/31/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 131.238.28.0/24 | AS600OARNET-AS - OARnet | No ROA | — | 5/31/2026 |
| 131.238.17.0/24 | AS32234UD-ACA-AS - University of Dayton | No ROA | — | 5/31/2026 |
Origin ASN
AS32234
UD-ACA-AS - University of Dayton
Geolocation
API
Open https://api.ipctl.io/v1/prefix/131.238.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/131.238.0.0/16" | jq
External Links