203.57.128.0/20
🇦🇺CIDR
203.57.128.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇦🇺 Australia
City
Kalgoorlie-Boulder
RIR
APNIC
Status
allocated
Allocated
2/4/1997
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.57.128.0/20 | AS17635GOLDNETPTYLTD-AS-AP - GoldNet Pty Ltd | Valid | APNIC | 6/1/2026 |
Covering Prefix
16 less-specific announcementsGeolocation
Country🇦🇺AustraliaAU
RegionWestern Australia
CityKalgoorlie-Boulder
Coordinates-30.7490, 121.4660 ↗
API
Open https://api.ipctl.io/v1/prefix/203.57.128.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.57.128.0/20" | jq
External Links