Dundas (Ext): landline numbers and carriers
Dundas (Ext) 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 18,700 allocated numbers, held by 18 carriers. A landline that calls you from one of these blocks was issued for the Dundas (Ext) 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 Dundas (Ext)
Dundas (Ext) is spread across carriers: SYMBIO NETWORKS PTY LTD leads with 29.4% of allocated numbers, and 18 carriers hold blocks in total. The register names the range holder; individual numbers may operate on another network after porting.
| Carrier | Blocks | Numbers | Share |
|---|---|---|---|
| SYMBIO NETWORKS PTY LTD | 8 | 5,500 | 29.4% |
| TELSTRA LIMITED | 3 | 3,700 | 19.8% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 3,100 | 16.6% |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 10.7% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 3 | 1,200 | 6.4% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 5.3% |
| OPTUS NETWORKS PTY LIMITED | 1 | 1,000 | 5.3% |
| NETSIP PTY LTD | 2 | 200 | 1.1% |
| ADARGA PTY LTD | 1 | 100 | 0.5% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 100 | 0.5% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 100 | 0.5% |
| LMGPS LTD | 1 | 100 | 0.5% |
| NETERA PTY LTD | 1 | 100 | 0.5% |
| PIPE NETWORKS PTY LIMITED | 1 | 100 | 0.5% |
| PIVOTEL SATELLITE PTY LIMITED | 1 | 100 | 0.5% |
Number blocks registered for Dundas (Ext)
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 |
|---|---|---|
| 0860020800… | 100 | VIRTUTEL PTY LTD |
| 0860075000… | 100 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0860081200… | 100 | NETSIP PTY LTD |
| 0860088400… | 100 | ADARGA PTY LTD |
| 0860094600… | 100 | THE TRUSTEE FOR READING FAMILY TRUST |
| 0860107000… | 100 | WHY PAY MORE 4 LESS PTY LTD |
| 0860115000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0860161000… | 3,000 | SYMBIO NETWORKS PTY LTD |
| 0860172000… | 100 | SYMBIO NETWORKS PTY LTD |
| 0860176800… | 100 | NETSIP PTY LTD |
| 0860192000… | 100 | CHECK TECHNOLOGY GROUP PTY LTD |
| 0860207000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0860220200… | 100 | C2A INTERNET.COM.AU PTY. LTD. |
| 0860232400… | 100 | LMGPS LTD |
| 0860246600… | 100 | PIVOTEL SATELLITE PTY LIMITED |
| 0860258800… | 100 | NETERA PTY LTD |
| 0860272000… | 100 | SYMBIO NETWORKS PTY LTD |
| 0890063000… | 3,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
Excerpt: the 18 lowest of 31 allocated blocks (source: ACMA register).
Check a number from Dundas (Ext)
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.