157.71.4.0/22
🇯🇵CIDR
157.71.4.0/22
IP Version
IPv4
Addresses
1K
Mask
/22 (255.255.252.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 157.71.4.0/22 | AS131932JEIS-NET - JR East Information Systems Company | No ROA | RADB | 5/30/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 157.71.0.0/17 | AS131932JEIS-NET - JR East Information Systems Company | No ROA | — | 5/30/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS131932 | RADB | MAINT-AS2516 | 11/13/2023 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/157.71.4.0/22Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/157.71.4.0/22" | jq
External Links