153.123.0.0/20
🇯🇵CIDR
153.123.0.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇯🇵 Japan
City
Shibuya City
RIR
APNIC
Status
allocated
Allocated
3/2/2011
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 153.123.0.0/20 | AS131921GMOCL - GMO GlobalSign Holdings K.K. | Valid | — | 5/31/2026 |
Covering Prefix
5 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 153.123.4.0/23 | AS131921GMOCL - GMO GlobalSign Holdings K.K. | Valid | — | 5/31/2026 |
| 153.123.6.0/23 | AS131921GMOCL - GMO GlobalSign Holdings K.K. | Valid | — | 5/31/2026 |
| 153.123.8.0/23 | AS131921GMOCL - GMO GlobalSign Holdings K.K. | Valid | — | 5/31/2026 |
| 153.123.2.0/24 | AS131921GMOCL - GMO GlobalSign Holdings K.K. | Valid | — | 5/31/2026 |
| 153.123.3.0/24 | AS131921GMOCL - GMO GlobalSign Holdings K.K. | Valid | — | 5/31/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 153.123.0.0/20 | AS131921 | /24 | apnic |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/153.123.0.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/153.123.0.0/20" | jq
External Links