Rottnest: landline numbers and carriers
Rottnest is one of the town-level numbering areas the ACMA register uses under area code 08 (SA, WA & NT). The register lists 31 number blocks for it with about 58,000 allocated numbers, held by 19 carriers. A landline that calls you from one of these blocks was issued for the Rottnest area — though the line may since have been ported, and caller ID can be spoofed.
Source: ACMA register, data as of 31/08/2026
The carriers in Rottnest
Rottnest is spread across carriers: TELSTRA LIMITED leads with 34.5% of allocated numbers, and 19 carriers hold blocks in total. The register names the range holder; individual numbers may operate on another network after porting.
| Carrier | Blocks | Numbers | Share |
|---|---|---|---|
| TELSTRA LIMITED | 2 | 20,000 | 34.5% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 10,000 | 17.2% |
| SYMBIO NETWORKS PTY LTD | 7 | 7,000 | 12.1% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 4 | 4,000 | 6.9% |
| NETSIP PTY LTD | 2 | 2,000 | 3.4% |
| OPTUS MOBILE PTY LIMITED | 2 | 2,000 | 3.4% |
| ADARGA PTY LTD | 1 | 1,000 | 1.7% |
| AGILE PTY LTD | 1 | 1,000 | 1.7% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 1.7% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 1.7% |
| LMGPS LTD | 1 | 1,000 | 1.7% |
| NETERA PTY LTD | 1 | 1,000 | 1.7% |
| OPTUS NETWORKS PTY LIMITED | 1 | 1,000 | 1.7% |
| PIPE NETWORKS PTY LIMITED | 1 | 1,000 | 1.7% |
| PIVOTEL SATELLITE PTY LIMITED | 1 | 1,000 | 1.7% |
Number blocks registered for Rottnest
The ACMA allocates geographic numbers in blocks tied to this numbering area. Every registered block for this area is allocated to a carrier.
| Block start | Numbers | Held by |
|---|---|---|
| 0861700000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0861701000… | 1,000 | VIRTUTEL PTY LTD |
| 0861704000… | 1,000 | NETSIP PTY LTD |
| 0861706000… | 1,000 | ADARGA PTY LTD |
| 0861708000… | 1,000 | NETSIP PTY LTD |
| 0861710000… | 1,000 | WHY PAY MORE 4 LESS PTY LTD |
| 0861712000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0861731000… | 1,000 | CHECK TECHNOLOGY GROUP PTY LTD |
| 0861733000… | 1,000 | C2A INTERNET.COM.AU PTY. LTD. |
| 0861735000… | 1,000 | LMGPS LTD |
| 0861751000… | 1,000 | PIVOTEL SATELLITE PTY LIMITED |
| 0861753000… | 1,000 | NETERA PTY LTD |
| 0861756000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0861928000… | 1,000 | OPTUS MOBILE PTY LIMITED |
| 0861971000… | 1,000 | OPTUS MOBILE PTY LIMITED |
| 0861974000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0863615000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0863950000… | 10,000 | CHIME COMMUNICATIONS PTY LTD |
Excerpt: the 18 lowest of 31 allocated blocks (source: ACMA register).
Check a number from Rottnest
Worth knowing
- Block data tells you where a line was issued, not who is calling — and scammers routinely spoof local landline numbers to make a call look nearby.
- Learn more: the Australian area codes guide and how caller ID spoofing works.