143.74.3.0/24
🇯🇵CIDR
143.74.3.0/24
IP Version
IPv4
Addresses
256
Mask
/24 (255.255.255.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 143.74.3.0/24 | AS1516DNIC-ASBLK-01513-01518 - Headquarters, USAISC | No ROA | — | 5/30/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 143.74.0.0/16 | AS721DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | No ROA | — | 5/30/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/143.74.3.0/24Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/143.74.3.0/24" | jq
External Links