Les adresses IP débutant par 203.51.73 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 | 16/04/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | AU | Australie | - | Sydney | -33,8679 | 151,2073 | 2018-04-15 |
| MaxMind | AU | Australie | - | - | -33,494 | 143,2104 | 2018-04-15 |
| Whois | AU | - | - | - | 134 | -25 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 203.51.73.0 | 3409135872 | 0 |
| 203.51.73.1 | 3409135873 | 0 |
| 203.51.73.2 | 3409135874 | 0 |
| 203.51.73.3 | 3409135875 | 0 |
| 203.51.73.4 | 3409135876 | 0 |
| 203.51.73.5 | 3409135877 | 0 |
| 203.51.73.6 | 3409135878 | 0 |
| 203.51.73.7 | 3409135879 | 0 |
| 203.51.73.8 | 3409135880 | 0 |
| 203.51.73.9 | 3409135881 | 0 |
| 203.51.73.10 | 3409135882 | 0 |
| 203.51.73.11 | 3409135883 | 0 |
| 203.51.73.12 | 3409135884 | 0 |
| 203.51.73.13 | 3409135885 | 0 |
| 203.51.73.14 | 3409135886 | 0 |
| 203.51.73.15 | 3409135887 | 0 |
| 203.51.73.16 | 3409135888 | 0 |
| 203.51.73.17 | 3409135889 | 0 |
| 203.51.73.18 | 3409135890 | 0 |
| 203.51.73.19 | 3409135891 | 0 |
| 203.51.73.20 | 3409135892 | 0 |
| 203.51.73.21 | 3409135893 | 0 |
| 203.51.73.22 | 3409135894 | 0 |
| 203.51.73.23 | 3409135895 | 0 |
| 203.51.73.24 | 3409135896 | 0 |
| 203.51.73.25 | 3409135897 | 0 |
| 203.51.73.26 | 3409135898 | 0 |
| 203.51.73.27 | 3409135899 | 0 |
| 203.51.73.28 | 3409135900 | 0 |
| 203.51.73.29 | 3409135901 | 0 |
| 203.51.73.30 | 3409135902 | 0 |
| 203.51.73.31 | 3409135903 | 0 |
| 203.51.73.32 | 3409135904 | 0 |
| 203.51.73.33 | 3409135905 | 0 |
| 203.51.73.34 | 3409135906 | 0 |
| 203.51.73.35 | 3409135907 | 0 |
| 203.51.73.36 | 3409135908 | 0 |
| 203.51.73.37 | 3409135909 | 0 |
| 203.51.73.38 | 3409135910 | 0 |
| 203.51.73.39 | 3409135911 | 0 |
| 203.51.73.40 | 3409135912 | 0 |
| 203.51.73.41 | 3409135913 | 0 |
| 203.51.73.42 | 3409135914 | 0 |
| 203.51.73.43 | 3409135915 | 0 |
| 203.51.73.44 | 3409135916 | 0 |
| 203.51.73.45 | 3409135917 | 0 |
| 203.51.73.46 | 3409135918 | 0 |
| 203.51.73.47 | 3409135919 | 0 |
| 203.51.73.48 | 3409135920 | 0 |
| 203.51.73.49 | 3409135921 | 0 |
| 203.51.73.50 | 3409135922 | 0 |
| 203.51.73.51 | 3409135923 | 0 |
| 203.51.73.52 | 3409135924 | 0 |
| 203.51.73.53 | 3409135925 | 0 |
| 203.51.73.54 | 3409135926 | 0 |
| 203.51.73.55 | 3409135927 | 0 |
| 203.51.73.56 | 3409135928 | 0 |
| 203.51.73.57 | 3409135929 | 0 |
| 203.51.73.58 | 3409135930 | 0 |
| 203.51.73.59 | 3409135931 | 0 |
| 203.51.73.60 | 3409135932 | 0 |
| 203.51.73.61 | 3409135933 | 0 |
| 203.51.73.62 | 3409135934 | 0 |
| 203.51.73.63 | 3409135935 | 0 |
| 203.51.73.64 | 3409135936 | 0 |
| 203.51.73.65 | 3409135937 | 0 |
| 203.51.73.66 | 3409135938 | 0 |
| 203.51.73.67 | 3409135939 | 0 |
| 203.51.73.68 | 3409135940 | 0 |
| 203.51.73.69 | 3409135941 | 0 |
| 203.51.73.70 | 3409135942 | 0 |
| 203.51.73.71 | 3409135943 | 0 |
| 203.51.73.72 | 3409135944 | 0 |
| 203.51.73.73 | 3409135945 | 0 |
| 203.51.73.74 | 3409135946 | 0 |
| 203.51.73.75 | 3409135947 | 0 |
| 203.51.73.76 | 3409135948 | 0 |
| 203.51.73.77 | 3409135949 | 0 |
| 203.51.73.78 | 3409135950 | 0 |
| 203.51.73.79 | 3409135951 | 0 |
| 203.51.73.80 | 3409135952 | 0 |
| 203.51.73.81 | 3409135953 | 0 |
| 203.51.73.82 | 3409135954 | 0 |
| 203.51.73.83 | 3409135955 | 0 |
| 203.51.73.84 | 3409135956 | 0 |
| 203.51.73.85 | 3409135957 | 0 |