203.131.240.0/20
🇯🇵CIDR
203.131.240.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
APNIC
Status
allocated
Allocated
4/24/1998
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.131.240.0/20 | AS2914NTT-DATA-2914 - NTT America, Inc. | Valid | APNIC | 5/31/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.131.244.0/22 | AS2914NTT-DATA-2914 - NTT America, Inc. | Valid | — | 5/31/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 203.131.240.0/20 | AS2914 | /20 | apnic |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS2914 | APNIC | MAINT-NTTGIN-JP | 2/14/2024 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 203.131.248.0/21 | ðŸ‡ðŸ‡°HK | assigned | |
| 203.131.244.0/24 | ðŸ‡ðŸ‡°HK | assigned | |
| 203.131.255.0/25 | ðŸ‡ðŸ‡°HK | assigned | |
| 203.131.255.192/27 | ðŸ‡ðŸ‡°HK | assigned | |
| 203.131.253.32/27 | ðŸ‡ðŸ‡°HK | assigned | |
| 203.131.255.224/28 | ðŸ‡ðŸ‡°HK | assigned | |
| 203.131.247.32/28 | ðŸ‡ðŸ‡°HK | assigned | |
| 203.131.255.240/28 | ðŸ‡ðŸ‡°HK | assigned |
Origin ASN
AS2914
NTT-DATA-2914 - NTT America, Inc.
Geolocation
API
Open https://api.ipctl.io/v1/prefix/203.131.240.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.131.240.0/20" | jq
External Links