221.133.128.0/18
🇰🇷CIDR
221.133.128.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇰🇷 South Korea
City
Seoul (Toegye-ro)
RIR
APNIC
Status
allocated
Allocated
2/24/2005
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.133.128.0/18 | AS9689SKB-FCABLE-AS-KR - SK Broadband Co Ltd | No ROA | RADB | 6/2/2026 |
Covering Prefix
27 less-specific announcementsIRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS9689 | RADB | MAINT-AS4637 | 11/13/2023 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/221.133.128.0/18Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/221.133.128.0/18" | jq
External Links