Whittlesea: landline numbers and carriers
Whittlesea is one of the town-level numbering areas the ACMA register uses under area code 03 (VIC & TAS). The register lists 48 number blocks for it with about 243,000 allocated numbers, held by 22 carriers. A landline that calls you from one of these blocks was issued for the Whittlesea 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 Whittlesea
Whittlesea is spread across carriers: TELSTRA LIMITED leads with 35.8% of allocated numbers, and 22 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 | 7 | 87,000 | 35.8% |
| OPTUS NETWORKS PTY LIMITED | 4 | 35,000 | 14.4% |
| SYMBIO NETWORKS PTY LTD | 9 | 28,000 | 11.5% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 3 | 14,000 | 5.8% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 4 | 13,000 | 5.3% |
| OPTUS MOBILE PTY LIMITED | 3 | 12,000 | 4.9% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 10,000 | 4.1% |
| PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 1 | 10,000 | 4.1% |
| PIPE NETWORKS PTY LIMITED | 1 | 10,000 | 4.1% |
| TPG TELECOM LIMITED | 1 | 10,000 | 4.1% |
| NETSIP PTY LTD | 2 | 2,000 | 0.8% |
| VIRTUTEL 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% |
Number blocks registered for Whittlesea
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 |
|---|---|---|
| 0381010000… | 10,000 | OPTUS MOBILE PTY LIMITED |
| 0381030000… | 3,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0381035000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0381036000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0381038000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0381040000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0381042000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0381044000… | 1,000 | VIRTUTEL PTY LTD |
| 0381045000… | 1,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0381046000… | 1,000 | ADARGA PTY LTD |
| 0381048000… | 1,000 | THE TRUSTEE FOR READING FAMILY TRUST |
| 0381049000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0381051000… | 1,000 | WHY PAY MORE 4 LESS PTY LTD |
| 0381053000… | 1,000 | NETSIP PTY LTD |
| 0381055000… | 1,000 | GENNEXT ENTERPRISES PTY LTD |
| 0381056000… | 1,000 | CHECK TECHNOLOGY GROUP PTY LTD |
| 0381058000… | 1,000 | C2A INTERNET.COM.AU PTY. LTD. |
| 0381070000… | 10,000 | SYMBIO NETWORKS PTY LTD |
Excerpt: the 18 lowest of 48 allocated blocks (source: ACMA register).
Check a number from Whittlesea
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.