Les adresses IP débutant par 203.51.30 sont fournies par Telstra Pty Ltd, elles appartiennent au CIDR (Classless Inter-Domain Routing) 203.48.0.0/14, le bloc IP comprant les adresses de 203.48.0.0 à 203.51.255.255). Le numéro de système autonome (ASN) est 1221.
| ASN | 1221 |
| IP commençant par | 203.48.0.0 |
| IP se terminant par | 203.51.255.255 |
| Nom ASN | Telstra Pty Ltd |
| CDIR | 203.48.0.0/14 |
| IP numérique | |
| Registe | apnic |
| Dernière mise à jour | 04/07/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | AU | Australie | - | Sydney | -33,8679 | 151,2073 | 2018-07-04 |
| MaxMind | AU | Australie | - | Gungahlin | -35,1867 | 149,1362 | 2018-07-04 |
| Whois | AU | - | - | - | 134 | -25 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 203.51.30.0 | 3409124864 | 0 |
| 203.51.30.1 | 3409124865 | 0 |
| 203.51.30.2 | 3409124866 | 0 |
| 203.51.30.3 | 3409124867 | 0 |
| 203.51.30.4 | 3409124868 | 0 |
| 203.51.30.5 | 3409124869 | 0 |
| 203.51.30.6 | 3409124870 | 0 |
| 203.51.30.7 | 3409124871 | 0 |
| 203.51.30.8 | 3409124872 | 0 |
| 203.51.30.9 | 3409124873 | 0 |
| 203.51.30.10 | 3409124874 | 0 |
| 203.51.30.11 | 3409124875 | 0 |
| 203.51.30.12 | 3409124876 | 0 |
| 203.51.30.13 | 3409124877 | 0 |
| 203.51.30.14 | 3409124878 | 0 |
| 203.51.30.15 | 3409124879 | 0 |
| 203.51.30.16 | 3409124880 | 0 |
| 203.51.30.17 | 3409124881 | 0 |
| 203.51.30.18 | 3409124882 | 0 |
| 203.51.30.19 | 3409124883 | 0 |
| 203.51.30.20 | 3409124884 | 0 |
| 203.51.30.21 | 3409124885 | 0 |
| 203.51.30.22 | 3409124886 | 0 |
| 203.51.30.23 | 3409124887 | 0 |
| 203.51.30.24 | 3409124888 | 0 |
| 203.51.30.25 | 3409124889 | 0 |
| 203.51.30.26 | 3409124890 | 0 |
| 203.51.30.27 | 3409124891 | 0 |
| 203.51.30.28 | 3409124892 | 0 |
| 203.51.30.29 | 3409124893 | 0 |
| 203.51.30.30 | 3409124894 | 0 |
| 203.51.30.31 | 3409124895 | 0 |
| 203.51.30.32 | 3409124896 | 0 |
| 203.51.30.33 | 3409124897 | 0 |
| 203.51.30.34 | 3409124898 | 0 |
| 203.51.30.35 | 3409124899 | 0 |
| 203.51.30.36 | 3409124900 | 0 |
| 203.51.30.37 | 3409124901 | 0 |
| 203.51.30.38 | 3409124902 | 0 |
| 203.51.30.39 | 3409124903 | 0 |
| 203.51.30.40 | 3409124904 | 0 |
| 203.51.30.41 | 3409124905 | 0 |
| 203.51.30.42 | 3409124906 | 0 |
| 203.51.30.43 | 3409124907 | 0 |
| 203.51.30.44 | 3409124908 | 0 |
| 203.51.30.45 | 3409124909 | 0 |
| 203.51.30.46 | 3409124910 | 0 |
| 203.51.30.47 | 3409124911 | 0 |
| 203.51.30.48 | 3409124912 | 0 |
| 203.51.30.49 | 3409124913 | 0 |
| 203.51.30.50 | 3409124914 | 0 |
| 203.51.30.51 | 3409124915 | 0 |
| 203.51.30.52 | 3409124916 | 0 |
| 203.51.30.53 | 3409124917 | 0 |
| 203.51.30.54 | 3409124918 | 0 |
| 203.51.30.55 | 3409124919 | 0 |
| 203.51.30.56 | 3409124920 | 0 |
| 203.51.30.57 | 3409124921 | 0 |
| 203.51.30.58 | 3409124922 | 0 |
| 203.51.30.59 | 3409124923 | 0 |
| 203.51.30.60 | 3409124924 | 0 |
| 203.51.30.61 | 3409124925 | 0 |
| 203.51.30.62 | 3409124926 | 0 |
| 203.51.30.63 | 3409124927 | 0 |
| 203.51.30.64 | 3409124928 | 0 |
| 203.51.30.65 | 3409124929 | 0 |
| 203.51.30.66 | 3409124930 | 0 |
| 203.51.30.67 | 3409124931 | 0 |
| 203.51.30.68 | 3409124932 | 0 |
| 203.51.30.69 | 3409124933 | 0 |
| 203.51.30.70 | 3409124934 | 0 |
| 203.51.30.71 | 3409124935 | 0 |
| 203.51.30.72 | 3409124936 | 0 |
| 203.51.30.73 | 3409124937 | 0 |
| 203.51.30.74 | 3409124938 | 0 |
| 203.51.30.75 | 3409124939 | 0 |
| 203.51.30.76 | 3409124940 | 0 |
| 203.51.30.77 | 3409124941 | 0 |
| 203.51.30.78 | 3409124942 | 0 |
| 203.51.30.79 | 3409124943 | 0 |
| 203.51.30.80 | 3409124944 | 0 |
| 203.51.30.81 | 3409124945 | 0 |
| 203.51.30.82 | 3409124946 | 0 |
| 203.51.30.83 | 3409124947 | 0 |
| 203.51.30.84 | 3409124948 | 0 |
| 203.51.30.85 | 3409124949 | 0 |