Les adresses IP débutant par 203.51.99 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 | 17/05/2019 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | AU | Australia | - | Canberra | -35,2835 | 149,1281 | 2019-05-17 |
| MaxMind | AU | Australie | - | Bundaberg | -24,8542 | 152,2352 | 2019-05-17 |
| Whois | AU | - | - | - | 134 | -25 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 203.51.99.0 | 3409142528 | 0 |
| 203.51.99.1 | 3409142529 | 0 |
| 203.51.99.2 | 3409142530 | 0 |
| 203.51.99.3 | 3409142531 | 0 |
| 203.51.99.4 | 3409142532 | 0 |
| 203.51.99.5 | 3409142533 | 0 |
| 203.51.99.6 | 3409142534 | 0 |
| 203.51.99.7 | 3409142535 | 0 |
| 203.51.99.8 | 3409142536 | 0 |
| 203.51.99.9 | 3409142537 | 0 |
| 203.51.99.10 | 3409142538 | 0 |
| 203.51.99.11 | 3409142539 | 0 |
| 203.51.99.12 | 3409142540 | 0 |
| 203.51.99.13 | 3409142541 | 0 |
| 203.51.99.14 | 3409142542 | 0 |
| 203.51.99.15 | 3409142543 | 0 |
| 203.51.99.16 | 3409142544 | 0 |
| 203.51.99.17 | 3409142545 | 0 |
| 203.51.99.18 | 3409142546 | 0 |
| 203.51.99.19 | 3409142547 | 0 |
| 203.51.99.20 | 3409142548 | 0 |
| 203.51.99.21 | 3409142549 | 0 |
| 203.51.99.22 | 3409142550 | 0 |
| 203.51.99.23 | 3409142551 | 0 |
| 203.51.99.24 | 3409142552 | 0 |
| 203.51.99.25 | 3409142553 | 0 |
| 203.51.99.26 | 3409142554 | 0 |
| 203.51.99.27 | 3409142555 | 0 |
| 203.51.99.28 | 3409142556 | 0 |
| 203.51.99.29 | 3409142557 | 0 |
| 203.51.99.30 | 3409142558 | 0 |
| 203.51.99.31 | 3409142559 | 0 |
| 203.51.99.32 | 3409142560 | 0 |
| 203.51.99.33 | 3409142561 | 0 |
| 203.51.99.34 | 3409142562 | 0 |
| 203.51.99.35 | 3409142563 | 0 |
| 203.51.99.36 | 3409142564 | 0 |
| 203.51.99.37 | 3409142565 | 0 |
| 203.51.99.38 | 3409142566 | 0 |
| 203.51.99.39 | 3409142567 | 0 |
| 203.51.99.40 | 3409142568 | 0 |
| 203.51.99.41 | 3409142569 | 0 |
| 203.51.99.42 | 3409142570 | 0 |
| 203.51.99.43 | 3409142571 | 0 |
| 203.51.99.44 | 3409142572 | 0 |
| 203.51.99.45 | 3409142573 | 0 |
| 203.51.99.46 | 3409142574 | 0 |
| 203.51.99.47 | 3409142575 | 0 |
| 203.51.99.48 | 3409142576 | 0 |
| 203.51.99.49 | 3409142577 | 0 |
| 203.51.99.50 | 3409142578 | 0 |
| 203.51.99.51 | 3409142579 | 0 |
| 203.51.99.52 | 3409142580 | 0 |
| 203.51.99.53 | 3409142581 | 0 |
| 203.51.99.54 | 3409142582 | 0 |
| 203.51.99.55 | 3409142583 | 0 |
| 203.51.99.56 | 3409142584 | 0 |
| 203.51.99.57 | 3409142585 | 0 |
| 203.51.99.58 | 3409142586 | 0 |
| 203.51.99.59 | 3409142587 | 0 |
| 203.51.99.60 | 3409142588 | 0 |
| 203.51.99.61 | 3409142589 | 0 |
| 203.51.99.62 | 3409142590 | 0 |
| 203.51.99.63 | 3409142591 | 0 |
| 203.51.99.64 | 3409142592 | 0 |
| 203.51.99.65 | 3409142593 | 0 |
| 203.51.99.66 | 3409142594 | 0 |
| 203.51.99.67 | 3409142595 | 0 |
| 203.51.99.68 | 3409142596 | 0 |
| 203.51.99.69 | 3409142597 | 0 |
| 203.51.99.70 | 3409142598 | 0 |
| 203.51.99.71 | 3409142599 | 0 |
| 203.51.99.72 | 3409142600 | 0 |
| 203.51.99.73 | 3409142601 | 0 |
| 203.51.99.74 | 3409142602 | 0 |
| 203.51.99.75 | 3409142603 | 0 |
| 203.51.99.76 | 3409142604 | 0 |
| 203.51.99.77 | 3409142605 | 0 |
| 203.51.99.78 | 3409142606 | 0 |
| 203.51.99.79 | 3409142607 | 0 |
| 203.51.99.80 | 3409142608 | 0 |
| 203.51.99.81 | 3409142609 | 0 |
| 203.51.99.82 | 3409142610 | 0 |
| 203.51.99.83 | 3409142611 | 0 |
| 203.51.99.84 | 3409142612 | 0 |
| 203.51.99.85 | 3409142613 | 0 |