Darwin: landline numbers and carriers
Darwin is one of the town-level numbering areas the ACMA register uses under area code 08 (SA, WA & NT). The register lists 113 number blocks for it with about 609,000 allocated numbers, held by 19 carriers. A landline that calls you from one of these blocks was issued for the Darwin 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 Darwin
TELSTRA LIMITED holds the largest share here with 56.7% of allocated numbers — with 18 other carriers alongside. The register names the range holder; individual numbers may operate on another network after porting.
| Carrier | Blocks | Numbers | Share |
|---|---|---|---|
| TELSTRA LIMITED | 30 | 345,000 | 56.7% |
| OPTUS NETWORKS PTY LIMITED | 13 | 80,000 | 13.1% |
| SYMBIO NETWORKS PTY LTD | 19 | 65,000 | 10.7% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 11 | 44,000 | 7.2% |
| PIPE NETWORKS PTY LIMITED | 3 | 21,000 | 3.4% |
| NETSIP PTY LTD | 13 | 15,000 | 2.5% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 3 | 12,000 | 2% |
| CHIME COMMUNICATIONS PTY LTD | 6 | 8,000 | 1.3% |
| AGILE PTY LTD | 3 | 4,000 | 0.7% |
| NETERA PTY LTD | 3 | 3,000 | 0.5% |
| TWILIO AUSTRALIA PTY LTD | 1 | 3,000 | 0.5% |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 0.3% |
| ADARGA PTY LTD | 1 | 1,000 | 0.2% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 0.2% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 0.2% |
Number blocks registered for Darwin
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 |
|---|---|---|
| 0879001000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0879029000… | 2,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0879039000… | 2,000 | AGILE PTY LTD |
| 0879054000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0879056000… | 1,000 | AGILE PTY LTD |
| 0879057000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0879061000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0879062000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0879125000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0879128000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0879137000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0879138000… | 2,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0879147000… | 1,000 | VIRTUTEL PTY LTD |
| 0879150000… | 10,000 | OPTUS NETWORKS PTY LIMITED |
| 0879178000… | 2,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0879180000… | 10,000 | SYMBIO NETWORKS PTY LTD |
| 0879190000… | 10,000 | OPTUS NETWORKS PTY LIMITED |
| 0879207000… | 1,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
Excerpt: the 18 lowest of 113 allocated blocks (source: ACMA register).
Check a number from Darwin
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.