121.54.186.0/23
🇯🇵CIDR
121.54.186.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
RIPENCC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.54.186.0/23 | AS212581BIDFX SGX FX SYSTEMS UK LIMITED | No ROA | — | 6/1/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 121.54.184.0/22 | AS212581BIDFX SGX FX SYSTEMS UK LIMITED | No ROA | — | 6/1/2026 |
| 121.54.186.0/24 | AS212581BIDFX SGX FX SYSTEMS UK LIMITED | No ROA | — | 6/1/2026 |
| 121.54.187.0/24 | AS212581BIDFX SGX FX SYSTEMS UK LIMITED | No ROA | — | 6/1/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 121.54.187.0/24 | AS212581 | 🇸🇬SG | assigned |
| 121.54.186.0/24 | AS212581 | 🇯🇵JP | assigned |
Origin ASN
AS212581
BIDFX SGX FX SYSTEMS UK LIMITED
Geolocation
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/121.54.186.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/121.54.186.0/23" | jq
External Links