Les adresses IP débutant par 203.51.13 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 | 26/02/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | AU | Australia | - | Gold Coast | -28,0003 | 153,4309 | 2018-02-25 |
| MaxMind | AU | Australie | - | Nicholls | -35,167 | 149,0947 | 2018-02-25 |
| Whois | AU | - | - | - | 134 | -25 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 203.51.13.0 | 3409120512 | 0 |
| 203.51.13.1 | 3409120513 | 0 |
| 203.51.13.2 | 3409120514 | 0 |
| 203.51.13.3 | 3409120515 | 0 |
| 203.51.13.4 | 3409120516 | 0 |
| 203.51.13.5 | 3409120517 | 0 |
| 203.51.13.6 | 3409120518 | 0 |
| 203.51.13.7 | 3409120519 | 0 |
| 203.51.13.8 | 3409120520 | 0 |
| 203.51.13.9 | 3409120521 | 0 |
| 203.51.13.10 | 3409120522 | 0 |
| 203.51.13.11 | 3409120523 | 0 |
| 203.51.13.12 | 3409120524 | 0 |
| 203.51.13.13 | 3409120525 | 0 |
| 203.51.13.14 | 3409120526 | 0 |
| 203.51.13.15 | 3409120527 | 0 |
| 203.51.13.16 | 3409120528 | 0 |
| 203.51.13.17 | 3409120529 | 0 |
| 203.51.13.18 | 3409120530 | 0 |
| 203.51.13.19 | 3409120531 | 0 |
| 203.51.13.20 | 3409120532 | 0 |
| 203.51.13.21 | 3409120533 | 0 |
| 203.51.13.22 | 3409120534 | 0 |
| 203.51.13.23 | 3409120535 | 0 |
| 203.51.13.24 | 3409120536 | 0 |
| 203.51.13.25 | 3409120537 | 0 |
| 203.51.13.26 | 3409120538 | 0 |
| 203.51.13.27 | 3409120539 | 0 |
| 203.51.13.28 | 3409120540 | 0 |
| 203.51.13.29 | 3409120541 | 0 |
| 203.51.13.30 | 3409120542 | 0 |
| 203.51.13.31 | 3409120543 | 0 |
| 203.51.13.32 | 3409120544 | 0 |
| 203.51.13.33 | 3409120545 | 0 |
| 203.51.13.34 | 3409120546 | 0 |
| 203.51.13.35 | 3409120547 | 0 |
| 203.51.13.36 | 3409120548 | 0 |
| 203.51.13.37 | 3409120549 | 0 |
| 203.51.13.38 | 3409120550 | 0 |
| 203.51.13.39 | 3409120551 | 0 |
| 203.51.13.40 | 3409120552 | 0 |
| 203.51.13.41 | 3409120553 | 0 |
| 203.51.13.42 | 3409120554 | 0 |
| 203.51.13.43 | 3409120555 | 0 |
| 203.51.13.44 | 3409120556 | 0 |
| 203.51.13.45 | 3409120557 | 0 |
| 203.51.13.46 | 3409120558 | 0 |
| 203.51.13.47 | 3409120559 | 0 |
| 203.51.13.48 | 3409120560 | 0 |
| 203.51.13.49 | 3409120561 | 0 |
| 203.51.13.50 | 3409120562 | 0 |
| 203.51.13.51 | 3409120563 | 0 |
| 203.51.13.52 | 3409120564 | 0 |
| 203.51.13.53 | 3409120565 | 0 |
| 203.51.13.54 | 3409120566 | 0 |
| 203.51.13.55 | 3409120567 | 0 |
| 203.51.13.56 | 3409120568 | 0 |
| 203.51.13.57 | 3409120569 | 0 |
| 203.51.13.58 | 3409120570 | 0 |
| 203.51.13.59 | 3409120571 | 0 |
| 203.51.13.60 | 3409120572 | 0 |
| 203.51.13.61 | 3409120573 | 0 |
| 203.51.13.62 | 3409120574 | 0 |
| 203.51.13.63 | 3409120575 | 0 |
| 203.51.13.64 | 3409120576 | 0 |
| 203.51.13.65 | 3409120577 | 0 |
| 203.51.13.66 | 3409120578 | 0 |
| 203.51.13.67 | 3409120579 | 0 |
| 203.51.13.68 | 3409120580 | 0 |
| 203.51.13.69 | 3409120581 | 0 |
| 203.51.13.70 | 3409120582 | 0 |
| 203.51.13.71 | 3409120583 | 0 |
| 203.51.13.72 | 3409120584 | 0 |
| 203.51.13.73 | 3409120585 | 0 |
| 203.51.13.74 | 3409120586 | 0 |
| 203.51.13.75 | 3409120587 | 0 |
| 203.51.13.76 | 3409120588 | 0 |
| 203.51.13.77 | 3409120589 | 0 |
| 203.51.13.78 | 3409120590 | 0 |
| 203.51.13.79 | 3409120591 | 0 |
| 203.51.13.80 | 3409120592 | 0 |
| 203.51.13.81 | 3409120593 | 0 |
| 203.51.13.82 | 3409120594 | 0 |
| 203.51.13.83 | 3409120595 | 0 |
| 203.51.13.84 | 3409120596 | 0 |
| 203.51.13.85 | 3409120597 | 0 |