The Rock: landline numbers and carriers
The Rock is one of the town-level numbering areas the ACMA register uses under area code 02 (NSW & ACT). The register lists 29 number blocks for it with about 16,800 allocated numbers, held by 17 carriers. A landline that calls you from one of these blocks was issued for the The Rock 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 The Rock
The Rock is spread across carriers: TELSTRA LIMITED leads with 35.7% of allocated numbers, and 17 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 | 3 | 6,000 | 35.7% |
| SYMBIO NETWORKS PTY LTD | 7 | 2,500 | 14.9% |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 11.9% |
| PIPE NETWORKS PTY LIMITED | 2 | 1,100 | 6.5% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 2 | 1,100 | 6.5% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 1,100 | 6.5% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 6% |
| OPTUS NETWORKS PTY LIMITED | 1 | 1,000 | 6% |
| NETSIP PTY LTD | 2 | 200 | 1.2% |
| ADARGA PTY LTD | 1 | 100 | 0.6% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 100 | 0.6% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 100 | 0.6% |
| LMGPS LTD | 1 | 100 | 0.6% |
| NETERA PTY LTD | 1 | 100 | 0.6% |
| PIVOTEL SATELLITE PTY LIMITED | 1 | 100 | 0.6% |
Number blocks registered for The Rock
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 |
|---|---|---|
| 0259064000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0259138000… | 2,000 | OPTUS MOBILE PTY LIMITED |
| 0259266000… | 1,000 | PIPE NETWORKS PTY LIMITED |
| 0259274000… | 100 | VIRTUTEL PTY LTD |
| 0259348000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0259373000… | 100 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0259382000… | 100 | NETSIP PTY LTD |
| 0259401000… | 100 | THE TRUSTEE FOR READING FAMILY TRUST |
| 0259407000… | 100 | LMGPS LTD |
| 0259436000… | 100 | NETSIP PTY LTD |
| 0259505000… | 100 | SYMBIO NETWORKS PTY LTD |
| 0259523200… | 100 | CHECK TECHNOLOGY GROUP PTY LTD |
| 0259577200… | 100 | C2A INTERNET.COM.AU PTY. LTD. |
| 0259652200… | 100 | PIVOTEL SATELLITE PTY LIMITED |
| 0259672200… | 100 | ADARGA PTY LTD |
| 0259690200… | 100 | NETERA PTY LTD |
| 0259699000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0259731200… | 100 | SYMBIO NETWORKS PTY LTD |
Excerpt: the 18 lowest of 29 allocated blocks (source: ACMA register).
Check a number from The Rock
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.