144.104.248.0/21
🇯🇵CIDR
144.104.248.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
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 |
|---|---|---|---|---|
| 144.104.248.0/21 | AS747DNIC-AS-00747 - Headquarters, USAISC | No ROA | RADB | 6/1/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 144.104.0.0/14 | AS721DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | No ROA | — | 6/1/2026 |
| 144.104.0.0/15 | AS721DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | No ROA | — | 6/1/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS747 | RADB | MAINT-AS3786 | 11/13/2023 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/144.104.248.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/144.104.248.0/21" | jq
External Links