Dandenong: landline numbers and carriers
Dandenong is one of the town-level numbering areas the ACMA register uses under area code 03 (VIC & TAS). The register lists 115 number blocks for it with about 1.1m allocated numbers, held by 21 carriers. A landline that calls you from one of these blocks was issued for the Dandenong 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 Dandenong
TELSTRA LIMITED holds the largest share here with 60.9% 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 | 38 | 641,000 | 60.9% |
| OPTUS NETWORKS PTY LIMITED | 21 | 175,000 | 16.6% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 7 | 47,000 | 4.5% |
| SYMBIO NETWORKS PTY LTD | 14 | 36,000 | 3.4% |
| PIPE NETWORKS PTY LIMITED | 4 | 29,800 | 2.8% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 6 | 28,000 | 2.7% |
| OPTUS MOBILE PTY LIMITED | 4 | 22,000 | 2.1% |
| PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 1 | 20,000 | 1.9% |
| TPG TELECOM LIMITED | 2 | 20,000 | 1.9% |
| NETSIP PTY LTD | 6 | 12,000 | 1.1% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 10,000 | 1% |
| VIRTUTEL PTY LTD | 2 | 2,000 | 0.2% |
| ADARGA PTY LTD | 1 | 1,000 | 0.1% |
| AGILE PTY LTD | 1 | 1,000 | 0.1% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 0.1% |
Number blocks registered for Dandenong
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 |
|---|---|---|
| 0387050000… | 10,000 | TPG TELECOM LIMITED |
| 0387070000… | 10,000 | OPTUS NETWORKS PTY LIMITED |
| 0387100000… | 10,000 | TELSTRA LIMITED |
| 0387120000… | 10,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0387180000… | 10,000 | TPG TELECOM LIMITED |
| 0387250000… | 20,000 | PIPE INTERNATIONAL (AUSTRALIA) PTY LTD |
| 0387280000… | 10,000 | OPTUS NETWORKS PTY LIMITED |
| 0387380000… | 10,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0387402000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0387409000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0387430000… | 10,000 | CHIME COMMUNICATIONS PTY LTD |
| 0387505000… | 6,000 | OPTUS NETWORKS PTY LIMITED |
| 0387511000… | 1,000 | OPTUS MOBILE PTY LIMITED |
| 0387512000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0387513000… | 3,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0387516000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0387517000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0387518000… | 1,000 | SYMBIO NETWORKS PTY LTD |
Excerpt: the 18 lowest of 115 allocated blocks (source: ACMA register).
Check a number from Dandenong
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.