221.121.0.0/18
🇻🇳CIDR
221.121.0.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇻🇳 VN
RIR
APNIC
Status
allocated
Allocated
5/20/2005
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.121.0.0/18 | AS7602SPT-AS-VN - Sai gon Postel Corporation | Valid | APNICRADB | 6/1/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.121.0.0/24 | AS7602SPT-AS-VN - Sai gon Postel Corporation | Valid | — | 6/1/2026 |
| 221.121.4.0/24 | AS7602SPT-AS-VN - Sai gon Postel Corporation | Valid | — | 6/1/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 221.121.0.0/18 | AS7602 | /24 | apnic |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 221.121.32.0/19 | 🇻🇳VN | assigned | |
| 221.121.24.0/21 | 🇻🇳VN | assigned | |
| 221.121.17.0/24 | 🇻🇳VN | assigned | |
| 221.121.19.0/24 | 🇻🇳VN | assigned | |
| 221.121.0.0/24 | AS7602 | 🇻🇳VN | assigned |
| 221.121.1.0/24 | 🇻🇳VN | assigned | |
| 221.121.2.0/24 | 🇻🇳VN | assigned | |
| 221.121.6.0/24 | 🇻🇳VN | assigned | |
| 221.121.18.0/24 | 🇻🇳VN | assigned | |
| 221.121.7.0/24 | 🇻🇳VN | assigned | |
| 221.121.12.0/24 | 🇻🇳VN | assigned | |
| 221.121.4.0/24 | AS7602 | 🇻🇳VN | assigned |
| 221.121.16.0/24 | 🇻🇳VN | assigned | |
| 221.121.5.0/24 | 🇻🇳VN | assigned |
Geolocation
Country🇻🇳VNVN
Coordinates14.0583, 108.2772 ↗
API
Open https://api.ipctl.io/v1/prefix/221.121.0.0/18Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/221.121.0.0/18" | jq
External Links