121.54.168.0/21
ðŸ‡ðŸ‡°CIDR
121.54.168.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
ðŸ‡ðŸ‡° Hong Kong
RIR
APNIC
Status
allocated
Allocated
10/11/2007
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.54.168.0/21 | AS152194CTGSERVERLIMITED-AS-AP - CTG Server Limited | Valid | APNICRADB | 6/13/2026 |
Covering Prefix
5 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.54.174.0/24 | AS152194CTGSERVERLIMITED-AS-AP - CTG Server Limited | Valid | — | 6/13/2026 |
| 121.54.168.0/24 | AS152194CTGSERVERLIMITED-AS-AP - CTG Server Limited | Valid | — | 6/13/2026 |
| 121.54.171.0/24 | AS152194CTGSERVERLIMITED-AS-AP - CTG Server Limited | Valid | — | 6/13/2026 |
| 121.54.173.0/24 | AS152194CTGSERVERLIMITED-AS-AP - CTG Server Limited | Valid | — | 6/13/2026 |
| 121.54.175.0/24 | AS152194CTGSERVERLIMITED-AS-AP - CTG Server Limited | Valid | — | 6/13/2026 |
RPKI ROAs
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 121.54.170.0/24 | ðŸ‡ðŸ‡°HK | assigned | |
| 121.54.173.0/24 | AS152194 | ðŸ‡ðŸ‡°HK | assigned |
| 121.54.175.0/24 | AS152194 | ðŸ‡ðŸ‡°HK | assigned |
| 121.54.168.0/24 | AS152194 | ðŸ‡ðŸ‡°HK | assigned |
| 121.54.171.0/24 | AS152194 | ðŸ‡ðŸ‡°HK | assigned |
| 121.54.172.0/24 | ðŸ‡ðŸ‡°HK | assigned | |
| 121.54.169.0/24 | ðŸ‡ðŸ‡°HK | assigned | |
| 121.54.174.0/24 | AS152194 | ðŸ‡ðŸ‡°HK | assigned |
Geolocation
CountryðŸ‡ðŸ‡°Hong KongHK
Coordinates22.3964, 114.1095 ↗
API
Open https://api.ipctl.io/v1/prefix/121.54.168.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.54.168.0/21" | jq
External Links