Katoomba: landline numbers and carriers
Katoomba is one of the town-level numbering areas the ACMA register uses under area code 02 (NSW & ACT). The register lists 41 number blocks for it with about 110,000 allocated numbers, held by 21 carriers. A landline that calls you from one of these blocks was issued for the Katoomba 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 Katoomba
TELSTRA LIMITED holds the largest share here with 53.6% 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 | 59,000 | 53.6% |
| TPG TELECOM LIMITED | 1 | 10,000 | 9.1% |
| OPTUS NETWORKS PTY LIMITED | 5 | 9,700 | 8.8% |
| SYMBIO NETWORKS PTY LTD | 8 | 7,300 | 6.6% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 4,000 | 3.6% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 3 | 3,000 | 2.7% |
| NETSIP PTY LTD | 2 | 2,000 | 1.8% |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 1.8% |
| ADARGA PTY LTD | 1 | 1,000 | 0.9% |
| AGILE PTY LTD | 1 | 1,000 | 0.9% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 0.9% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 0.9% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 0.9% |
| LMGPS LTD | 1 | 1,000 | 0.9% |
| NETERA PTY LTD | 1 | 1,000 | 0.9% |
Number blocks registered for Katoomba
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 |
|---|---|---|
| 0247000000… | 3,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0247009000… | 1,000 | CHIME COMMUNICATIONS PTY LTD |
| 0247030000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0247035000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0247036000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0247040000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0247044000… | 100 | OPTUS NETWORKS PTY LIMITED |
| 0247044100… | 300 | SYMBIO NETWORKS PTY LTD |
| 0247044400… | 600 | OPTUS NETWORKS PTY LIMITED |
| 0247057000… | 1,000 | NETSIP PTY LTD |
| 0247058000… | 1,000 | AGILE PTY LTD |
| 0247063000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0247066000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0247087000… | 1,000 | PRIMUS TELECOMMUNICATIONS PTY LIMITED |
| 0247094000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0247099000… | 1,000 | VIRTUTEL PTY LTD |
| 0247104000… | 1,000 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0247109000… | 1,000 | NETSIP PTY LTD |
Excerpt: the 18 lowest of 41 allocated blocks (source: ACMA register).
Check a number from Katoomba
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.