Sydney: landline numbers and carriers
Sydney is one of the town-level numbering areas the ACMA register uses under area code 02 (NSW & ACT). The register lists 782 number blocks for it with about 13.1m allocated numbers, held by 32 carriers. A landline that calls you from one of these blocks was issued for the Sydney 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 Sydney
TELSTRA LIMITED holds the largest share here with 51.6% of allocated numbers — with 31 other carriers alongside. The register names the range holder; individual numbers may operate on another network after porting.
| Carrier | Blocks | Numbers | Share |
|---|---|---|---|
| TELSTRA LIMITED | 321 | 6.8m | 51.6% |
| OPTUS NETWORKS PTY LIMITED | 138 | 2.4m | 18.3% |
| SYMBIO NETWORKS PTY LTD | 69 | 839,000 | 6.4% |
| PIPE NETWORKS PTY LIMITED | 65 | 703,000 | 5.4% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 28 | 675,000 | 5.2% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 17 | 476,000 | 3.6% |
| PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 29 | 387,000 | 3% |
| VERIZON AUSTRALIA PTY LIMITED | 20 | 239,000 | 1.8% |
| NETSIP PTY LTD | 21 | 192,000 | 1.5% |
| TPG TELECOM LIMITED | 22 | 179,000 | 1.4% |
| CHIME COMMUNICATIONS PTY LTD | 6 | 70,000 | 0.5% |
| AGILE PTY LTD | 7 | 65,000 | 0.5% |
| OPTUS MOBILE PTY LIMITED | 4 | 40,000 | 0.3% |
| INTECK IT PTY LTD | 12 | 24,000 | 0.2% |
| VIRTUTEL PTY LTD | 3 | 21,000 | 0.2% |
Number blocks registered for Sydney
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 |
|---|---|---|
| 0272000000… | 5,000 | PIPE NETWORKS PTY LIMITED |
| 0272005000… | 5,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0272010000… | 1,000 | VIRTUTEL PTY LTD |
| 0272011000… | 1,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0272012000… | 1,000 | NETSIP PTY LTD |
| 0272013000… | 1,000 | LMGPS LTD |
| 0272014000… | 1,000 | THE TRUSTEE FOR READING FAMILY TRUST |
| 0272015000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0272016000… | 1,000 | WHY PAY MORE 4 LESS PTY LTD |
| 0272017000… | 1,000 | NETSIP PTY LTD |
| 0272018000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0272019000… | 9,000 | SYMBIO NETWORKS PTY LTD |
| 0272028000… | 10,000 | OPTUS NETWORKS PTY LIMITED |
| 0272038000… | 20,000 | OPTUS NETWORKS PTY LIMITED |
| 0272058000… | 20,000 | OPTUS NETWORKS PTY LIMITED |
| 0272078000… | 1,000 | GENNEXT ENTERPRISES PTY LTD |
| 0272079000… | 1,000 | NETSIP PTY LTD |
| 0272080000… | 20,000 | SYMBIO NETWORKS PTY LTD |
Excerpt: the 18 lowest of 782 allocated blocks (source: ACMA register).
Check a number from Sydney
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.