Robertson: landline numbers and carriers
Robertson is one of the town-level numbering areas the ACMA register uses under area code 02 (NSW & ACT). The register lists 31 number blocks for it with about 72,000 allocated numbers, held by 20 carriers. A landline that calls you from one of these blocks was issued for the Robertson 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 Robertson
TELSTRA LIMITED holds the largest share here with 55.6% of allocated numbers — with 19 other carriers alongside. The register names the range holder; individual numbers may operate on another network after porting.
| Carrier | Blocks | Numbers | Share |
|---|---|---|---|
| TELSTRA LIMITED | 2 | 40,000 | 55.6% |
| SYMBIO NETWORKS PTY LTD | 5 | 5,000 | 6.9% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 4,000 | 5.6% |
| OPTUS NETWORKS PTY LIMITED | 3 | 3,000 | 4.2% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 3 | 3,000 | 4.2% |
| NETSIP PTY LTD | 2 | 2,000 | 2.8% |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 2.8% |
| ADARGA PTY LTD | 1 | 1,000 | 1.4% |
| AGILE PTY LTD | 1 | 1,000 | 1.4% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 1.4% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 1.4% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 1.4% |
| GENNEXT ENTERPRISES PTY LTD | 1 | 1,000 | 1.4% |
| LMGPS LTD | 1 | 1,000 | 1.4% |
| NETERA PTY LTD | 1 | 1,000 | 1.4% |
Number blocks registered for Robertson
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 |
|---|---|---|
| 0238019000… | 1,000 | VIRTUTEL PTY LTD |
| 0238048000… | 1,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0238074000… | 1,000 | NETSIP PTY LTD |
| 0238103000… | 1,000 | LMGPS LTD |
| 0238126000… | 1,000 | THE TRUSTEE FOR READING FAMILY TRUST |
| 0238181000… | 1,000 | WHY PAY MORE 4 LESS PTY LTD |
| 0238205000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0238206000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0238237000… | 1,000 | GENNEXT ENTERPRISES PTY LTD |
| 0238252000… | 1,000 | NETSIP PTY LTD |
| 0238280000… | 1,000 | CHECK TECHNOLOGY GROUP PTY LTD |
| 0238306000… | 1,000 | C2A INTERNET.COM.AU PTY. LTD. |
| 0238337000… | 1,000 | PIVOTEL SATELLITE PTY LIMITED |
| 0238363000… | 1,000 | ADARGA PTY LTD |
| 0238392000… | 1,000 | NETERA PTY LTD |
| 0238420000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0248060000… | 3,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0248114000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
Excerpt: the 18 lowest of 31 allocated blocks (source: ACMA register).
Check a number from Robertson
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.