203.223.48.0/21
🇯🇵CIDR
203.223.48.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇯🇵 Japan
City
Nagano (Agatamachi)
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.223.48.0/21 | AS17955AVISNET - Densan Co., Ltd. | Valid | RADB | 5/31/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.223.48.0/20 | AS17955AVISNET - Densan Co., Ltd. | Valid | — | 5/31/2026 |
Origin ASN
AS17955
AVISNET - Densan Co., Ltd.
Geolocation
API
Open https://api.ipctl.io/v1/prefix/203.223.48.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.223.48.0/21" | jq
External Links