| 203.0.0.0/8 | WHOIS (APNIC) | Asia Pacific Network Information Center, Pty. Ltd. | AU |
| 203.201.128.0/19 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.128.0/19 | WHOIS (APNIC) | ECN Pty Ltd | AU |
| 203.201.128.0/19 | APNIC assigned | — | AU |
| 203.201.132.0/22 | WHOIS (APNIC) | ECN Pty Ltd DSL WAN RANGE2 | AU |
| 203.201.140.0/22 | WHOIS (APNIC) | ECN Pty Ltd DSL WAN RANGE3 | AU |
| 203.201.148.0/22 | WHOIS (APNIC) | ECN Pty Ltd Corporate Client Fixed IP Ranges 1 | AU |
| 203.201.128.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.130.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.132.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.134.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.136.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.136.0/23 | WHOIS (APNIC) | ECN Pty Ltd DSL WAN RANGE2 | AU |
| 203.201.138.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.140.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.142.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.144.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.144.0/23 | WHOIS (APNIC) | ECN Pty Ltd DSL WAN RANGE3 | AU |
| 203.201.146.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.148.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.150.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.152.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.152.0/23 | WHOIS (APNIC) | ECN Pty Ltd Corporate Client Fixed IP Ranges 1 | AU |
| 203.201.158.0/23 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.158.0/23 | WHOIS (APNIC) | ECN Pty Ltd Dial Port WAN1 Range | AU |
| 203.201.128.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.128.0/24 | WHOIS (APNIC) | ECN Pty Ltd DSL WAN RANGE1 | AU |
| 203.201.129.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.130.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.131.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.132.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.133.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.134.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.135.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.136.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.137.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.138.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.138.0/24 | WHOIS (APNIC) | ECN Pty Ltd DSL WAN RANGE2 | AU |
| 203.201.139.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.139.0/24 | WHOIS (APNIC) | ECN Pty Ltd Corporate Client Fixed IP Ranges 2 | AU |
| 203.201.140.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.141.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.142.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.143.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.144.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.145.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.146.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.146.0/24 | WHOIS (APNIC) | Blue Orb Media | AU |
| 203.201.147.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.147.0/24 | WHOIS (APNIC) | ECN Pty Ltd DSL SSLHost 1 Range | AU |
| 203.201.148.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.149.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.150.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.151.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.152.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.153.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.154.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.154.0/24 | WHOIS (APNIC) | ECN Pty Ltd Corporate Client Fixed IP Ranges 1 | AU |
| 203.201.155.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.156.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.157.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.158.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.159.0/24 | BGP route | AS9652 ECN Pty Ltd | — |
| 203.201.129.128/25 | WHOIS (APNIC) | ECN PTY LTD Corporate Fixed IP Allocation 5 | AU |
| 203.201.129.64/26 | WHOIS (APNIC) | ECN PTY LTD Corporate Fixed IP Allocation 5 | AU |
| 203.201.129.0/27 | WHOIS (APNIC) | Voipstra Services Infrastructure | AU |
| 203.201.129.32/27 | WHOIS (APNIC) | ECN PTY LTD Corporate Fixed IP Allocation 5 | AU |
| 203.201.150.192/27 | WHOIS (APNIC) | Scanning Systems Pty Ltd | AU |
| 203.201.152.96/27 | WHOIS (APNIC) | Avaya Pty Ltd queensland Operations Network. | AU |
| 203.201.151.144/29 | WHOIS (APNIC) | Alcan Gove Project Pty Ltd Brisbane Office. | AU |