122.10.152.0/21
🇯🇵CIDR
122.10.152.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇯🇵 Japan
City
Tokyo
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 122.10.152.0/21 | AS21859ZEN-ECN - Zenlayer Inc | No ROA | RADB | 6/13/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 122.10.155.0/24 | AS21859ZEN-ECN - Zenlayer Inc | No ROA | — | 6/13/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 122.10.152.0/23 | 🇯🇵JP | assigned | |
| 122.10.154.0/24 | 🇯🇵JP | assigned | |
| 122.10.155.0/24 | AS21859 | 🇯🇵JP | assigned |
Origin ASN
AS21859
ZEN-ECN - Zenlayer Inc
Geolocation
Country🇯🇵JapanJP
CityTokyo
API
Open https://api.ipctl.io/v1/prefix/122.10.152.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/122.10.152.0/21" | jq
External Links