| 203.0.0.0/8 | WHOIS (APNIC) | Asia Pacific Network Information Center, Pty. Ltd. | AU |
| 203.135.0.0/18 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.0.0/18 | WHOIS (APNIC) | Pakistan Telecommuication company limited | PK |
| 203.135.32.0/19 | APNIC assigned | — | PK |
| 203.135.44.0/22 | BGP route | AS56167 PTML | — |
| 203.135.44.0/22 | WHOIS (APNIC) | Ufone | PK |
| 203.135.62.0/23 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.32.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-1 | PK |
| 203.135.33.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.33.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-2 | PK |
| 203.135.34.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-2 | PK |
| 203.135.35.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-2 | PK |
| 203.135.36.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.36.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-2 | PK |
| 203.135.37.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-2 | PK |
| 203.135.38.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.38.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-3 | PK |
| 203.135.39.0/24 | BGP route | AS9557 Pakistan Telecom Company Limited | — |
| 203.135.39.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-3 | PK |
| 203.135.40.0/24 | BGP route | AS9557 Pakistan Telecom Company Limited | — |
| 203.135.40.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-3 | PK |
| 203.135.41.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.41.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-3 | PK |
| 203.135.42.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.42.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-3 | PK |
| 203.135.43.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.43.0/24 | WHOIS (APNIC) | Premium DSL on KHI Huawei BRAS-3 | PK |
| 203.135.44.0/24 | BGP route | AS56167 PTML | — |
| 203.135.44.0/24 | WHOIS (APNIC) | Ufone | PK |
| 203.135.45.0/24 | BGP route | AS56167 PTML | — |
| 203.135.45.0/24 | WHOIS (APNIC) | Ufone | PK |
| 203.135.46.0/24 | BGP route | AS56167 PTML | — |
| 203.135.46.0/24 | WHOIS (APNIC) | Ufone | PK |
| 203.135.47.0/24 | BGP route | AS56167 PTML | — |
| 203.135.47.0/24 | WHOIS (APNIC) | Ufone | PK |
| 203.135.48.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.48.0/24 | WHOIS (APNIC) | Premium DSL on QTA Huawei BRAS-1 | PK |
| 203.135.49.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.49.0/24 | WHOIS (APNIC) | Premium DSL on QTA Huawei BRAS-1 | PK |
| 203.135.50.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.50.0/24 | WHOIS (APNIC) | Premium DSL on QTA Huawei BRAS-1 | PK |
| 203.135.51.0/24 | WHOIS (APNIC) | Premium DSL on SUkkur BRAS-1 | PK |
| 203.135.52.0/24 | WHOIS (APNIC) | Premium DSL on SUkkur BRAS-1 | PK |
| 203.135.53.0/24 | BGP route | AS9557 Pakistan Telecom Company Limited | — |
| 203.135.53.0/24 | WHOIS (APNIC) | Premium DSL on SUkkur BRAS-1 | PK |
| 203.135.54.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.54.0/24 | WHOIS (APNIC) | Premium DSL on SUkkur BRAS-1 | PK |
| 203.135.55.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.55.0/24 | WHOIS (APNIC) | Premium DSL on Bahawalpur BRAS-1 | PK |
| 203.135.56.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.56.0/24 | WHOIS (APNIC) | Premium DSL on Bahawalpur BRAS-1 | PK |
| 203.135.57.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.57.0/24 | WHOIS (APNIC) | Premium DSL on Bahawalpur BRAS-1 | PK |
| 203.135.58.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.58.0/24 | WHOIS (APNIC) | Premium DSL on Sailkot BRAS-1 | PK |
| 203.135.59.0/24 | BGP route | AS9557 Pakistan Telecom Company Limited | — |
| 203.135.59.0/24 | WHOIS (APNIC) | Premium DSL on Sailkot BRAS-1 | PK |
| 203.135.60.0/24 | WHOIS (APNIC) | Premium DSL on Sailkot BRAS-1 | PK |
| 203.135.61.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.61.0/24 | WHOIS (APNIC) | Premium DSL on Sailkot BRAS-1 | PK |
| 203.135.62.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.62.0/24 | WHOIS (APNIC) | Premium DSL on Sailkot BRAS-1 | PK |
| 203.135.63.0/24 | BGP route | AS17557 Pakistan Telecom Company Limited | — |
| 203.135.63.0/24 | WHOIS (APNIC) | Premium DSL on Sailkot BRAS-1 | PK |