Windsor (NSW): landline numbers and carriers
Windsor (NSW) is one of the town-level numbering areas the ACMA register uses under area code 02 (NSW & ACT). The register lists 51 number blocks for it with about 258,000 allocated numbers, held by 21 carriers. A landline that calls you from one of these blocks was issued for the Windsor (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 Windsor (NSW)
TELSTRA LIMITED holds the largest share here with 56.6% of allocated numbers — with 20 other carriers alongside. The register names the range holder; individual numbers may operate on another network after porting.
| Carrier | Blocks | Numbers | Share |
|---|---|---|---|
| TELSTRA LIMITED | 6 | 146,000 | 56.6% |
| OPTUS MOBILE PTY LIMITED | 3 | 22,000 | 8.5% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 4 | 17,000 | 6.6% |
| OPTUS NETWORKS PTY LIMITED | 4 | 15,000 | 5.8% |
| SYMBIO NETWORKS PTY LTD | 9 | 14,000 | 5.4% |
| PIPE NETWORKS PTY LIMITED | 2 | 11,000 | 4.3% |
| TPG TELECOM LIMITED | 1 | 10,000 | 3.9% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 7 | 8,000 | 3.1% |
| CHIME COMMUNICATIONS PTY LTD | 2 | 2,000 | 0.8% |
| NETSIP PTY LTD | 2 | 2,000 | 0.8% |
| ADARGA PTY LTD | 1 | 1,000 | 0.4% |
| AGILE PTY LTD | 1 | 1,000 | 0.4% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 0.4% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 0.4% |
| GENNEXT ENTERPRISES PTY LTD | 1 | 1,000 | 0.4% |
Number blocks registered for Windsor (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 |
|---|---|---|
| 0245010000… | 3,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0245023000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0245028000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0245036000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0245047000… | 1,000 | AGILE PTY LTD |
| 0245048000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0245049000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0245050000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0245051000… | 3,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0245054000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0245055000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0245060000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0245062000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0245074000… | 1,000 | VIRTUTEL PTY LTD |
| 0245079000… | 1,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0245084000… | 1,000 | NETSIP PTY LTD |
| 0245086000… | 2,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0245094000… | 1,000 | THE TRUSTEE FOR READING FAMILY TRUST |
Excerpt: the 18 lowest of 51 allocated blocks (source: ACMA register).
Check a number from Windsor (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.