203.10.40.0/21
🇦🇺CIDR
203.10.40.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇦🇺 Australia
City
North Sydney
RIR
APNIC
Status
allocated
Allocated
11/18/1994
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.10.40.0/21 | AS137188ACU-AS-AP - Australian Catholic University Limited | No ROA | RADB | 5/31/2026 |
Covering Prefix
6 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.10.40.0/24 | AS137188ACU-AS-AP - Australian Catholic University Limited | No ROA | — | 5/31/2026 |
| 203.10.41.0/24 | AS137188ACU-AS-AP - Australian Catholic University Limited | No ROA | — | 5/31/2026 |
| 203.10.43.0/24 | AS137188ACU-AS-AP - Australian Catholic University Limited | No ROA | — | 5/31/2026 |
| 203.10.44.0/24 | AS137188ACU-AS-AP - Australian Catholic University Limited | No ROA | — | 5/31/2026 |
| 203.10.45.0/24 | AS137188ACU-AS-AP - Australian Catholic University Limited | No ROA | — | 5/31/2026 |
| 203.10.47.0/24 | AS137188ACU-AS-AP - Australian Catholic University Limited | No ROA | — | 5/31/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/203.10.40.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.10.40.0/21" | jq
External Links