Gosford: landline numbers and carriers
Gosford is one of the town-level numbering areas the ACMA register uses under area code 02 (NSW & ACT). The register lists 113 number blocks for it with about 640,000 allocated numbers, held by 20 carriers. A landline that calls you from one of these blocks was issued for the Gosford 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 Gosford
TELSTRA LIMITED holds the largest share here with 60.9% 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 | 23 | 390,000 | 60.9% |
| OPTUS NETWORKS PTY LIMITED | 21 | 60,800 | 9.5% |
| PIPE NETWORKS PTY LIMITED | 5 | 41,000 | 6.4% |
| SYMBIO NETWORKS PTY LTD | 25 | 39,200 | 6.1% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 8 | 26,000 | 4.1% |
| OPTUS MOBILE PTY LIMITED | 4 | 22,000 | 3.4% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 5 | 19,000 | 3% |
| PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 1 | 10,000 | 1.6% |
| TPG TELECOM LIMITED | 1 | 10,000 | 1.6% |
| CHIME COMMUNICATIONS PTY LTD | 6 | 6,000 | 0.9% |
| NETSIP PTY LTD | 3 | 5,000 | 0.8% |
| AGILE PTY LTD | 2 | 2,000 | 0.3% |
| NETERA PTY LTD | 2 | 2,000 | 0.3% |
| ADARGA PTY LTD | 1 | 1,000 | 0.2% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 0.2% |
Number blocks registered for Gosford
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 |
|---|---|---|
| 0243000000… | 10,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0243010000… | 10,000 | PIPE NETWORKS PTY LIMITED |
| 0243020000… | 10,000 | PIPE INTERNATIONAL (AUSTRALIA) PTY LTD |
| 0243030000… | 3,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0243039000… | 1,000 | PIPE NETWORKS PTY LIMITED |
| 0243040000… | 3,600 | OPTUS NETWORKS PTY LIMITED |
| 0243043600… | 100 | SYMBIO NETWORKS PTY LTD |
| 0243043700… | 100 | OPTUS NETWORKS PTY LIMITED |
| 0243043800… | 200 | SYMBIO NETWORKS PTY LTD |
| 0243044000… | 1,700 | OPTUS NETWORKS PTY LIMITED |
| 0243045700… | 100 | SYMBIO NETWORKS PTY LTD |
| 0243045800… | 100 | OPTUS NETWORKS PTY LIMITED |
| 0243045900… | 100 | SYMBIO NETWORKS PTY LTD |
| 0243046000… | 2,100 | OPTUS NETWORKS PTY LIMITED |
| 0243048100… | 100 | SYMBIO NETWORKS PTY LTD |
| 0243048200… | 1,800 | OPTUS NETWORKS PTY LIMITED |
| 0243060000… | 1,000 | CHIME COMMUNICATIONS PTY LTD |
| 0243063000… | 1,000 | SYMBIO NETWORKS PTY LTD |
Excerpt: the 18 lowest of 113 allocated blocks (source: ACMA register).
Check a number from Gosford
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.