121.203.88.0/21
ðŸ‡ðŸ‡°CIDR
121.203.88.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
ðŸ‡ðŸ‡° Hong Kong
City
Kowloon
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.203.88.0/21 | AS17924SMARTONE-MB-AS-AP - SmarTone Mobile Communications Ltd | Valid | APNICRADB | 6/1/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.202.0.0/15 | AS17924SMARTONE-MB-AS-AP - SmarTone Mobile Communications Ltd | Valid | — | 6/1/2026 |
| 121.203.64.0/18 | AS17924SMARTONE-MB-AS-AP - SmarTone Mobile Communications Ltd | Valid | — | 6/1/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.203.88.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.203.88.0/21" | jq
External Links