163.221.0.0/16
🇯🇵IPv4APNICallocatedAS131158NAIST-AS - Nara Institute of Science and Technology, National University CorporationNo ROA
CIDR
163.221.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇯🇵 Japan
City
Chiyoda
RIR
APNIC
Status
allocated
Allocated
3/26/1993
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 163.221.0.0/16 | AS131158NAIST-AS - Nara Institute of Science and Technology, National University Corporation | No ROA | — | 6/1/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS2500 | RADB | MAINT-AS2500 | 11/13/2023 |
Origin ASN
AS131158
NAIST-AS - Nara Institute of Science and Technology, National University Corporation
Geolocation
API
Open https://api.ipctl.io/v1/prefix/163.221.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/163.221.0.0/16" | jq
External Links