Les adresses IP débutant par 203.51.16 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 | 05/11/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | AU | Australie | - | Walgett | -30,0246 | 148,1157 | 2017-11-05 |
| MaxMind | AU | Australie | - | Nicholls | -35,167 | 149,0947 | 2017-11-05 |
| Whois | AU | - | - | - | 134 | -25 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 203.51.16.0 | 3409121280 | 0 |
| 203.51.16.1 | 3409121281 | 0 |
| 203.51.16.2 | 3409121282 | 0 |
| 203.51.16.3 | 3409121283 | 0 |
| 203.51.16.4 | 3409121284 | 0 |
| 203.51.16.5 | 3409121285 | 0 |
| 203.51.16.6 | 3409121286 | 0 |
| 203.51.16.7 | 3409121287 | 0 |
| 203.51.16.8 | 3409121288 | 0 |
| 203.51.16.9 | 3409121289 | 0 |
| 203.51.16.10 | 3409121290 | 0 |
| 203.51.16.11 | 3409121291 | 0 |
| 203.51.16.12 | 3409121292 | 0 |
| 203.51.16.13 | 3409121293 | 0 |
| 203.51.16.14 | 3409121294 | 0 |
| 203.51.16.15 | 3409121295 | 0 |
| 203.51.16.16 | 3409121296 | 0 |
| 203.51.16.17 | 3409121297 | 0 |
| 203.51.16.18 | 3409121298 | 0 |
| 203.51.16.19 | 3409121299 | 0 |
| 203.51.16.20 | 3409121300 | 0 |
| 203.51.16.21 | 3409121301 | 0 |
| 203.51.16.22 | 3409121302 | 0 |
| 203.51.16.23 | 3409121303 | 0 |
| 203.51.16.24 | 3409121304 | 0 |
| 203.51.16.25 | 3409121305 | 0 |
| 203.51.16.26 | 3409121306 | 0 |
| 203.51.16.27 | 3409121307 | 0 |
| 203.51.16.28 | 3409121308 | 0 |
| 203.51.16.29 | 3409121309 | 0 |
| 203.51.16.30 | 3409121310 | 0 |
| 203.51.16.31 | 3409121311 | 0 |
| 203.51.16.32 | 3409121312 | 0 |
| 203.51.16.33 | 3409121313 | 0 |
| 203.51.16.34 | 3409121314 | 0 |
| 203.51.16.35 | 3409121315 | 0 |
| 203.51.16.36 | 3409121316 | 0 |
| 203.51.16.37 | 3409121317 | 0 |
| 203.51.16.38 | 3409121318 | 0 |
| 203.51.16.39 | 3409121319 | 0 |
| 203.51.16.40 | 3409121320 | 0 |
| 203.51.16.41 | 3409121321 | 0 |
| 203.51.16.42 | 3409121322 | 0 |
| 203.51.16.43 | 3409121323 | 0 |
| 203.51.16.44 | 3409121324 | 0 |
| 203.51.16.45 | 3409121325 | 0 |
| 203.51.16.46 | 3409121326 | 0 |
| 203.51.16.47 | 3409121327 | 0 |
| 203.51.16.48 | 3409121328 | 0 |
| 203.51.16.49 | 3409121329 | 0 |
| 203.51.16.50 | 3409121330 | 0 |
| 203.51.16.51 | 3409121331 | 0 |
| 203.51.16.52 | 3409121332 | 0 |
| 203.51.16.53 | 3409121333 | 0 |
| 203.51.16.54 | 3409121334 | 0 |
| 203.51.16.55 | 3409121335 | 0 |
| 203.51.16.56 | 3409121336 | 0 |
| 203.51.16.57 | 3409121337 | 0 |
| 203.51.16.58 | 3409121338 | 0 |
| 203.51.16.59 | 3409121339 | 0 |
| 203.51.16.60 | 3409121340 | 0 |
| 203.51.16.61 | 3409121341 | 0 |
| 203.51.16.62 | 3409121342 | 0 |
| 203.51.16.63 | 3409121343 | 0 |
| 203.51.16.64 | 3409121344 | 0 |
| 203.51.16.65 | 3409121345 | 0 |
| 203.51.16.66 | 3409121346 | 0 |
| 203.51.16.67 | 3409121347 | 0 |
| 203.51.16.68 | 3409121348 | 0 |
| 203.51.16.69 | 3409121349 | 0 |
| 203.51.16.70 | 3409121350 | 0 |
| 203.51.16.71 | 3409121351 | 0 |
| 203.51.16.72 | 3409121352 | 0 |
| 203.51.16.73 | 3409121353 | 0 |
| 203.51.16.74 | 3409121354 | 0 |
| 203.51.16.75 | 3409121355 | 0 |
| 203.51.16.76 | 3409121356 | 0 |
| 203.51.16.77 | 3409121357 | 0 |
| 203.51.16.78 | 3409121358 | 0 |
| 203.51.16.79 | 3409121359 | 0 |
| 203.51.16.80 | 3409121360 | 0 |
| 203.51.16.81 | 3409121361 | 0 |
| 203.51.16.82 | 3409121362 | 0 |
| 203.51.16.83 | 3409121363 | 0 |
| 203.51.16.84 | 3409121364 | 0 |
| 203.51.16.85 | 3409121365 | 0 |