123.21.0.0/16
🇻🇳CIDR
123.21.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇻🇳 Vietnam
City
Hanoi
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 123.21.0.0/16 | AS45899VNPT-AS-VN - VNPT Corp | Valid | RADB | 6/13/2026 |
Covering Prefix
29 less-specific announcementsOrigin ASN
AS45899
VNPT-AS-VN - VNPT Corp
Geolocation
API
Open https://api.ipctl.io/v1/prefix/123.21.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/123.21.0.0/16" | jq
External Links