123.200.128.0/20
🇦🇺CIDR
123.200.128.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇦🇺 Australia
City
Perth
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 123.200.128.0/20 | AS9723ISEEK-AS-AP - iseek Communications Pty Ltd | Valid | APNIC | 6/1/2026 |
Covering Prefix
6 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 123.200.140.0/22 | AS9723ISEEK-AS-AP - iseek Communications Pty Ltd | Valid | — | 6/1/2026 |
| 123.200.128.0/22 | AS9723ISEEK-AS-AP - iseek Communications Pty Ltd | Valid | — | 6/1/2026 |
| 123.200.136.0/22 | AS9723ISEEK-AS-AP - iseek Communications Pty Ltd | Valid | — | 6/1/2026 |
| 123.200.132.0/23 | AS9313ONTHENET-AS - Network Technology (AUST) P/L | Valid | — | 6/1/2026 |
| 123.200.134.0/23 | AS9723ISEEK-AS-AP - iseek Communications Pty Ltd | Valid | — | 6/1/2026 |
| 123.200.136.0/24 | AS137536CERNER-AS-AP - CERNER CORPORATION PTY LIMITED | Valid | — | 6/1/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 123.200.128.0/20 | AS9723 | /20 | apnic |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS9723 | APNIC | MAINT-AU-ISEEK | 3/23/2021 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 123.200.128.0/21 | 🇦🇺AU | assigned | |
| 123.200.136.0/22 | AS9723 | 🇦🇺AU | assigned |
| 123.200.140.0/22 | AS9723 | 🇦🇺AU | assigned |
| 123.200.132.0/23 | AS9313 | 🇦🇺AU | assigned |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/123.200.128.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/123.200.128.0/20" | jq
External Links