Foster: landline numbers and carriers
Foster is one of the town-level numbering areas the ACMA register uses under area code 03 (VIC & TAS). The register lists 31 number blocks for it with about 91,000 allocated numbers, held by 19 carriers. A landline that calls you from one of these blocks was issued for the Foster 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 Foster
TELSTRA LIMITED holds the largest share here with 63.7% of allocated numbers — with 18 other carriers alongside. The register names the range holder; individual numbers may operate on another network after porting.
| Carrier | Blocks | Numbers | Share |
|---|---|---|---|
| TELSTRA LIMITED | 3 | 58,000 | 63.7% |
| SYMBIO NETWORKS PTY LTD | 6 | 6,000 | 6.6% |
| OPTUS NETWORKS PTY LIMITED | 2 | 4,000 | 4.4% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 4,000 | 4.4% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 3 | 3,000 | 3.3% |
| NETSIP PTY LTD | 2 | 2,000 | 2.2% |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 2.2% |
| ADARGA PTY LTD | 1 | 1,000 | 1.1% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 1.1% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 1.1% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 1.1% |
| GENNEXT ENTERPRISES PTY LTD | 1 | 1,000 | 1.1% |
| LMGPS LTD | 1 | 1,000 | 1.1% |
| NETERA PTY LTD | 1 | 1,000 | 1.1% |
| PIPE NETWORKS PTY LIMITED | 1 | 1,000 | 1.1% |
Number blocks registered for Foster
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 |
|---|---|---|
| 0356006000… | 3,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0356009000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0356059000… | 1,000 | CHIME COMMUNICATIONS PTY LTD |
| 0356085000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0356086000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0356099000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0356117000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0356119000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0356166000… | 1,000 | VIRTUTEL PTY LTD |
| 0356205000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0356316000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0356394000… | 2,000 | OPTUS MOBILE PTY LIMITED |
| 0356404000… | 1,000 | PIPE NETWORKS PTY LIMITED |
| 0356412000… | 1,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0356429000… | 1,000 | NETSIP PTY LTD |
| 0356446000… | 3,000 | OPTUS NETWORKS PTY LIMITED |
| 0356451000… | 1,000 | ADARGA PTY LTD |
| 0356464000… | 1,000 | THE TRUSTEE FOR READING FAMILY TRUST |
Excerpt: the 18 lowest of 31 allocated blocks (source: ACMA register).
Check a number from Foster
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.