142.249.204.0/22
🇯🇵CIDR
142.249.204.0/22
IP Version
IPv4
Addresses
1K
Mask
/22 (255.255.252.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
ARIN
Status
allocated
Allocated
10/9/2025
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 142.249.204.0/24 | AS45691DODO-CORE - DODO K.K. | Valid | — | 6/1/2026 |
| 142.249.205.0/24 | AS45691DODO-CORE - DODO K.K. | Valid | — | 6/1/2026 |
| 142.249.206.0/24 | AS45691DODO-CORE - DODO K.K. | Valid | — | 6/1/2026 |
| 142.249.207.0/24 | AS45691DODO-CORE - DODO K.K. | Valid | — | 6/1/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 142.249.204.0/22 | AS45691 | /24 | arin |
Origin ASN
AS401655
Geolocation
API
Open https://api.ipctl.io/v1/prefix/142.249.204.0/22Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/142.249.204.0/22" | jq
External Links