121.243.16.0/21
🇮🇳CIDR
121.243.16.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇮🇳 India
City
New Delhi
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.243.16.0/21 | AS4755TATACOMM-AS - TATA Communications formerly VSNL is Leading ISP | Valid | RADB | 6/13/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.243.0.0/17 | AS4755TATACOMM-AS - TATA Communications formerly VSNL is Leading ISP | Valid | — | 6/13/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/121.243.16.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.243.16.0/21" | jq
External Links