Portland (VIC): landline numbers and carriers
Portland (VIC) is one of the town-level numbering areas the ACMA register uses under area code 03 (VIC & TAS). The register lists 39 number blocks for it with about 68,200 allocated numbers, held by 20 carriers. A landline that calls you from one of these blocks was issued for the Portland (VIC) 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 Portland (VIC)
TELSTRA LIMITED holds the largest share here with 71.8% 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 | 5 | 49,000 | 71.8% |
| OPTUS NETWORKS PTY LIMITED | 4 | 5,100 | 7.5% |
| SYMBIO NETWORKS PTY LTD | 8 | 3,500 | 5.1% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 3,100 | 4.5% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 3 | 2,100 | 3.1% |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 2.9% |
| PIPE NETWORKS PTY LIMITED | 2 | 1,100 | 1.6% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 1.5% |
| NETSIP PTY LTD | 2 | 200 | 0.3% |
| ADARGA PTY LTD | 1 | 100 | 0.1% |
| AGILE PTY LTD | 1 | 100 | 0.1% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 100 | 0.1% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 100 | 0.1% |
| GENNEXT ENTERPRISES PTY LTD | 1 | 100 | 0.1% |
| LMGPS LTD | 1 | 100 | 0.1% |
Number blocks registered for Portland (VIC)
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 |
|---|---|---|
| 0345043000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0345053000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0345054000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0345058800… | 100 | VIRTUTEL PTY LTD |
| 0345101900… | 100 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0345108000… | 100 | NETSIP PTY LTD |
| 0345119200… | 100 | THE TRUSTEE FOR READING FAMILY TRUST |
| 0345129200… | 100 | ADARGA PTY LTD |
| 0345139400… | 100 | WHY PAY MORE 4 LESS PTY LTD |
| 0345141000… | 2,000 | TELSTRA LIMITED |
| 0345172000… | 3,000 | OPTUS NETWORKS PTY LIMITED |
| 0345178400… | 100 | SYMBIO NETWORKS PTY LTD |
| 0345179600… | 100 | GENNEXT ENTERPRISES PTY LTD |
| 0345195500… | 100 | NETSIP PTY LTD |
| 0345205600… | 100 | CHECK TECHNOLOGY GROUP PTY LTD |
| 0345217700… | 100 | C2A INTERNET.COM.AU PTY. LTD. |
| 0345227800… | 100 | LMGPS LTD |
| 0345239900… | 100 | PIVOTEL SATELLITE PTY LIMITED |
Excerpt: the 18 lowest of 39 allocated blocks (source: ACMA register).
Check a number from Portland (VIC)
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.