Portland (NSW): landline numbers and carriers
Portland (NSW) is one of the town-level numbering areas the ACMA register uses under area code 02 (NSW & ACT). The register lists 32 number blocks for it with about 22,000 allocated numbers, held by 20 carriers. A landline that calls you from one of these blocks was issued for the Portland (NSW) 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 (NSW)
Portland (NSW) is spread across carriers: TELSTRA LIMITED leads with 27.3% 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 | 3 | 6,000 | 27.3% |
| OPTUS NETWORKS PTY LIMITED | 2 | 4,000 | 18.2% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 3,100 | 14.1% |
| SYMBIO NETWORKS PTY LTD | 6 | 2,400 | 10.9% |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 9.1% |
| PIPE NETWORKS PTY LIMITED | 2 | 1,100 | 5% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 2 | 1,100 | 5% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 4.5% |
| NETSIP PTY LTD | 2 | 200 | 0.9% |
| ADARGA PTY LTD | 1 | 100 | 0.5% |
| AGILE 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% |
| GENNEXT ENTERPRISES PTY LTD | 1 | 100 | 0.5% |
| LMGPS LTD | 1 | 100 | 0.5% |
Number blocks registered for Portland (NSW)
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 |
|---|---|---|
| 0253020800… | 100 | VIRTUTEL PTY LTD |
| 0253025300… | 100 | SYMBIO NETWORKS PTY LTD |
| 0253064000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0253180000… | 1,000 | PIPE NETWORKS PTY LIMITED |
| 0253185000… | 3,000 | OPTUS NETWORKS PTY LIMITED |
| 0253192000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0253246300… | 100 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0253258600… | 100 | NETSIP PTY LTD |
| 0253271200… | 100 | THE TRUSTEE FOR READING FAMILY TRUST |
| 0253286200… | 100 | LMGPS LTD |
| 0253298800… | 100 | WHY PAY MORE 4 LESS PTY LTD |
| 0253401400… | 100 | GENNEXT ENTERPRISES PTY LTD |
| 0253409000… | 100 | NETSIP PTY LTD |
| 0253421300… | 100 | CHECK TECHNOLOGY GROUP PTY LTD |
| 0253473600… | 100 | C2A INTERNET.COM.AU PTY. LTD. |
| 0253491900… | 100 | PIVOTEL SATELLITE PTY LIMITED |
| 0253506000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0253511200… | 100 | ADARGA PTY LTD |
Excerpt: the 18 lowest of 32 allocated blocks (source: ACMA register).
Check a number from Portland (NSW)
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.