Robertstown: landline numbers and carriers
Robertstown is one of the town-level numbering areas the ACMA register uses under area code 08 (SA, WA & NT). The register lists 30 number blocks for it with about 15,200 allocated numbers, held by 20 carriers. A landline that calls you from one of these blocks was issued for the Robertstown 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 Robertstown
Robertstown is spread across carriers: TELSTRA LIMITED leads with 26.3% of allocated numbers, and 20 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 | 4,000 | 26.3% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 3,100 | 20.4% |
| SYMBIO NETWORKS PTY LTD | 7 | 2,500 | 16.4% |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 13.2% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 6.6% |
| OPTUS NETWORKS PTY LIMITED | 1 | 1,000 | 6.6% |
| NETSIP PTY LTD | 2 | 200 | 1.3% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 2 | 200 | 1.3% |
| ADARGA PTY LTD | 1 | 100 | 0.7% |
| AGILE PTY LTD | 1 | 100 | 0.7% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 100 | 0.7% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 100 | 0.7% |
| GENNEXT ENTERPRISES PTY LTD | 1 | 100 | 0.7% |
| LMGPS LTD | 1 | 100 | 0.7% |
| NETERA PTY LTD | 1 | 100 | 0.7% |
Number blocks registered for Robertstown
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 |
|---|---|---|
| 0875025000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0875127000… | 2,000 | OPTUS MOBILE PTY LIMITED |
| 0875249600… | 100 | VIRTUTEL PTY LTD |
| 0875276000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0875296500… | 100 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0875304400… | 100 | NETSIP PTY LTD |
| 0875319200… | 100 | THE TRUSTEE FOR READING FAMILY TRUST |
| 0875329200… | 100 | ADARGA PTY LTD |
| 0875343000… | 100 | WHY PAY MORE 4 LESS PTY LTD |
| 0875438800… | 100 | GENNEXT ENTERPRISES PTY LTD |
| 0875446000… | 100 | NETSIP PTY LTD |
| 0875460000… | 100 | CHECK TECHNOLOGY GROUP PTY LTD |
| 0875498000… | 100 | C2A INTERNET.COM.AU PTY. LTD. |
| 0875510900… | 100 | LMGPS LTD |
| 0875529000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0875530800… | 100 | PIVOTEL SATELLITE PTY LIMITED |
| 0875602700… | 100 | NETERA PTY LTD |
| 0875618600… | 100 | SYMBIO NETWORKS PTY LTD |
Excerpt: the 18 lowest of 30 allocated blocks (source: ACMA register).
Check a number from Robertstown
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.