Caloundra: landline numbers and carriers
Caloundra is one of the town-level numbering areas the ACMA register uses under area code 07 (QLD). The register lists 78 number blocks for it with about 243,000 allocated numbers, held by 21 carriers and spread over the 0753…, 0752… and 0754… dialling prefixes. That makes Caloundra the 10th largest of 409 numbering areas under 07 by block count, with 1.07% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Caloundra area — though the line may since have been ported, and caller ID can be spoofed.
Source: ACMA register, data as of 15/10/2026
Where Caloundra is
- State or territory
- Queensland
- Council area
- Sunshine Coast
- Local time
- — AEST, UTC+10, no daylight saving
- Number format
- 07 53xx xxxx; from overseas +61 7 53xx xxxx
- Nearest numbering areas
- Nambour (25 km), Maleny (29 km), Bribie Island (32 km), Caboolture (34 km), Woodford (36 km)
Locality, council and state: ABS ASGS Edition 3 (CC BY 4.0). Distances are straight-line between localities.
How Caloundra was numbered
The oldest block in Caloundra was allocated on 30 June 1991 and is held today by TELSTRA LIMITED; the newest on 19 August 2026 to SYMBIO NETWORKS PTY LTD. Most of the area's blocks — 17 of 78 — date from 2005–2009, but allocations here span 35 years. 47 of the blocks are the standard 1,000-number size, and 9 are 10,000 numbers or larger. 13 allocated blocks have changed hands since they were first issued: the register still names AAPT LIMITED, AAPT WIRELESS PTY LIMITED, ENGIN PTY LIMITED, GOTALK LIMITED, IPTEL PTY LIMITED, IVOX PTY LTD, POWERTEL LIMITED and RSL COM AUSTRALIA PTY LIMITED as original allocatees of blocks now held by other carriers.
| Period | Blocks allocated |
|---|---|
| 1990–1994 | 8 |
| 1995–1999 | 4 |
| 2000–2004 | 7 |
| 2005–2009 | 17 |
| 2010–2014 | 10 |
| 2015–2019 | 16 |
| 2020–2024 | 11 |
| 2025–2029 | 5 |
The carriers in Caloundra
TELSTRA LIMITED holds the largest share here with 50.6% of allocated numbers across 20 blocks; OPTUS NETWORKS PTY LIMITED is second with 15.2%, and 19 other carriers hold the rest. TELSTRA LIMITED has the longest tenure, with a block dated 30/06/1991; SYMBIO NETWORKS PTY LTD received the newest, on 19/08/2026. SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1), PRIMUS TELECOMMUNICATIONS PTY LIMITED (1) and SYMBIO NETWORKS PTY LTD (6) hold blocks originally allocated to another carrier.
| Carrier | Blocks | Numbers | Share | First block | Latest block |
|---|---|---|---|---|---|
| TELSTRA LIMITED | 20 | 123,000 | 50.6% | 30/06/1991 | 02/03/2020 |
| OPTUS NETWORKS PTY LIMITED | 9 | 37,000 | 15.2% | 30/01/2004 | 22/02/2019 |
| OPTUS MOBILE PTY LIMITED | 4 | 25,000 | 10.3% | 05/04/2007 | 11/04/2008 |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 7 | 13,000 | 5.3% | 30/03/2000 | 17/06/2021 |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 6 | 11,000 | 4.5% | 24/12/2004 | 15/03/2017 |
| SYMBIO NETWORKS PTY LTD | 10 | 10,000 | 4.1% | 23/06/2005 | 19/08/2026 |
| PIPE NETWORKS PTY LIMITED | 3 | 5,000 | 2.1% | 17/04/2000 | 02/11/2023 |
| CHIME COMMUNICATIONS PTY LTD | 3 | 3,000 | 1.2% | 14/07/2004 | 27/10/2017 |
| NETERA PTY LTD | 2 | 2,000 | 0.8% | 24/10/2025 | 24/10/2025 |
| NETSIP PTY LTD | 2 | 2,000 | 0.8% | 14/02/2018 | 26/10/2021 |
| PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 2 | 2,000 | 0.8% | 25/07/2007 | 17/08/2009 |
| ADARGA PTY LTD | 1 | 1,000 | 0.4% | 16/09/2025 | 16/09/2025 |
| AGILE PTY LTD | 1 | 1,000 | 0.4% | 30/03/2007 | 30/03/2007 |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 0.4% | 13/07/2023 | 13/07/2023 |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 0.4% | 31/01/2022 | 31/01/2022 |
| GOLOGIC GROUP PTY LTD | 1 | 1,000 | 0.4% | 16/07/2021 | 16/07/2021 |
| LMGPS LTD | 1 | 1,000 | 0.4% | 23/11/2023 | 23/11/2023 |
| PIVOTEL SATELLITE PTY LIMITED | 1 | 1,000 | 0.4% | 16/04/2025 | 16/04/2025 |
| THE TRUSTEE FOR READING FAMILY TRUST | 1 | 1,000 | 0.4% | 21/10/2019 | 21/10/2019 |
| VIRTUTEL PTY LTD | 1 | 1,000 | 0.4% | 20/12/2015 | 20/12/2015 |
| WHY PAY MORE 4 LESS PTY LTD | 1 | 1,000 | 0.4% | 10/05/2018 | 10/05/2018 |
Number blocks registered for Caloundra
Every registered block for this area is allocated to a carrier. All 78 blocks, ascending:
| Block start | Numbers | Original allocatee | Current holder | Allocated | Transferred |
|---|---|---|---|---|---|
| 0752004000… | 1,000 | = | VIRTUTEL PTY LTD | 20/12/2015 | — |
| 0752020000… | 15,000 | = | OPTUS NETWORKS PTY LIMITED | 18/09/2015 | — |
| 0752054000… | 1,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 14/07/2016 | — |
| 0752089000… | 1,000 | = | NETSIP PTY LTD | 14/02/2018 | — |
| 0752124000… | 2,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 07/11/2016 | — |
| 0752126000… | 5,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 15/03/2017 | — |
| 0752136000… | 1,000 | = | ADARGA PTY LTD | 16/09/2025 | — |
| 0752164000… | 1,000 | = | THE TRUSTEE FOR READING FAMILY TRUST | 21/10/2019 | — |
| 0752212000… | 1,000 | = | GOLOGIC GROUP PTY LTD | 16/07/2021 | — |
| 0752215000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/06/2020 | — |
| 0752224000… | 1,000 | = | NETSIP PTY LTD | 26/10/2021 | — |
| 0752246000… | 1,000 | = | WHY PAY MORE 4 LESS PTY LTD | 10/05/2018 | — |
| 0752304000… | 1,000 | TWILIO AUSTRALIA PTY LTD | SYMBIO NETWORKS PTY LTD | 24/09/2020 | 15/10/2020 |
| 0752311000… | 2,000 | = | TELSTRA LIMITED | 02/03/2020 | — |
| 0752313000… | 5,000 | = | TELSTRA LIMITED | 31/05/2019 | — |
| 0752334000… | 1,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 17/09/2019 | — |
| 0752340000… | 2,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 17/06/2021 | — |
| 0752420000… | 1,000 | = | CHECK TECHNOLOGY GROUP PTY LTD | 31/01/2022 | — |
| 0752455000… | 1,000 | = | C2A INTERNET.COM.AU PTY. LTD. | 13/07/2023 | — |
| 0752487000… | 2,000 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 02/11/2023 | 24/03/2026 |
| 0752492000… | 1,000 | = | LMGPS LTD | 23/11/2023 | — |
| 0752527000… | 1,000 | = | PIVOTEL SATELLITE PTY LIMITED | 16/04/2025 | — |
| 0752559000… | 1,000 | = | NETERA PTY LTD | 24/10/2025 | — |
| 0752563000… | 1,000 | = | NETERA PTY LTD | 24/10/2025 | — |
| 0752602000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/08/2026 | — |
| 0752933000… | 4,000 | = | TELSTRA LIMITED | 02/12/2016 | — |
| 0753019000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 08/07/2005 | — |
| 0753061000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 23/06/2005 | 23/08/2013 |
| 0753095000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 20/06/2005 | — |
| 0753141000… | 3,000 | = | OPTUS NETWORKS PTY LIMITED | 08/11/2005 | — |
| 0753187000… | 1,000 | POWERTEL LIMITED | PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 25/07/2007 | 24/03/2026 |
| 0753196000… | 2,000 | = | OPTUS MOBILE PTY LIMITED | 30/08/2007 | — |
| 0753225000… | 1,000 | RSL COM AUSTRALIA PTY LIMITED | SYMBIO NETWORKS PTY LTD | 17/01/2007 | 06/10/2009 |
| 0753234000… | 3,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 28/02/2007 | — |
| 0753250000… | 10,000 | = | OPTUS MOBILE PTY LIMITED | 05/04/2007 | — |
| 0753271000… | 1,000 | = | AGILE PTY LTD | 30/03/2007 | 03/09/2012 |
| 0753273000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 18/12/2012 | — |
| 0753283000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 24/04/2014 | — |
| 0753294000… | 1,000 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 03/07/2007 | 24/03/2026 |
| 0753346000… | 3,000 | = | OPTUS MOBILE PTY LIMITED | 11/01/2008 | — |
| 0753349000… | 1,000 | = | TELSTRA LIMITED | 17/03/2009 | — |
| 0753370000… | 10,000 | = | OPTUS MOBILE PTY LIMITED | 11/04/2008 | — |
| 0753418000… | 2,000 | = | TELSTRA LIMITED | 29/10/2008 | — |
| 0753433000… | 1,000 | POWERTEL LIMITED | PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 17/08/2009 | 24/03/2026 |
| 0753436000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 17/08/2009 | 23/08/2013 |
| 0753439000… | 1,000 | = | TELSTRA LIMITED | 10/06/2010 | — |
| 0753456000… | 1,000 | VOXBONE | SYMBIO NETWORKS PTY LTD | 02/09/2010 | 31/10/2011 |
| 0753464000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 03/02/2012 | — |
| 0753469000… | 2,000 | = | OPTUS NETWORKS PTY LIMITED | 25/07/2012 | — |
| 0753509000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 11/08/2015 | — |
| 0753530000… | 1,000 | = | CHIME COMMUNICATIONS PTY LTD | 14/09/2011 | — |
| 0753551000… | 1,000 | IVOX PTY LTD | SYMBIO NETWORKS PTY LTD | 18/06/2012 | 24/06/2014 |
| 0753569000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 29/04/2022 | — |
| 0753579000… | 2,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 07/08/2014 | — |
| 0753590000… | 1,000 | = | CHIME COMMUNICATIONS PTY LTD | 27/10/2017 | — |
| 0753744000… | 3,000 | = | OPTUS NETWORKS PTY LIMITED | 21/08/2015 | — |
| 0753755000… | 3,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 20/03/2018 | — |
| 0753788000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 22/02/2019 | — |
| 0753900000… | 10,000 | = | TELSTRA LIMITED | 13/07/2010 | — |
| 0754006000… | 1,000 | IPTEL PTY LIMITED | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 30/03/2000 | 01/12/2004 |
| 0754052000… | 2,000 | AAPT WIRELESS PTY LIMITED | PIPE NETWORKS PTY LIMITED | 17/04/2000 | 24/03/2026 |
| 0754088000… | 1,000 | ENGIN PTY LIMITED | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 24/12/2004 | 11/08/2015 |
| 0754120000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 30/01/2004 | — |
| 0754123000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 12/11/2004 | — |
| 0754130000… | 10,000 | = | TELSTRA LIMITED | 09/07/2003 | — |
| 0754191000… | 1,000 | = | CHIME COMMUNICATIONS PTY LTD | 14/07/2004 | — |
| 0754206000… | 4,000 | = | TELSTRA LIMITED | 24/09/1993 | — |
| 0754360000… | 10,000 | = | TELSTRA LIMITED | 25/08/1998 | — |
| 0754370000… | 10,000 | = | TELSTRA LIMITED | 19/06/1996 | — |
| 0754380000… | 10,000 | = | TELSTRA LIMITED | 25/08/1998 | — |
| 0754390000… | 10,000 | = | TELSTRA LIMITED | 16/03/1995 | — |
| 0754902000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0754905000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0754910000… | 32,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0754945000… | 5,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0754960000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0754969000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0754995000… | 3,000 | = | TELSTRA LIMITED | 09/09/1993 | — |
Numbering areas next to Caloundra in the register
Immediately below and above Caloundra's blocks in the 0753…, 0752… and 0754… prefixes sit Nambour, Ballugan, Boonah, Caboolture, Coominya, Cooroy, Crossdale, Esk, Gatton and Gunalda.
| Numbering area | First block | Blocks | Carriers |
|---|---|---|---|
| Nambour | 0752000000… | 102 | 21 |
| Ballugan | 0752001000… | 28 | 19 |
| Boonah | 0752002000… | 32 | 19 |
| Caboolture | 0752003000… | 71 | 21 |
| Coominya | 0752005000… | 29 | 19 |
| Cooroy | 0752006000… | 41 | 20 |
| Crossdale | 0752007000… | 28 | 19 |
| Esk | 0752008000… | 32 | 20 |
| Gatton | 0752009000… | 34 | 19 |
| Gunalda | 0752010000… | 28 | 18 |
Had a call from a Caloundra number?
No clear pattern in reports on these numbers yet. If a call worried you:
- Call back on a number you trust
If a caller says they're your bank, the ATO, Services Australia, a courier or your telco, hang up and ring the organisation on the number from its website or your statement, never the number that called you. Caller ID can be faked.
- Report the call to Scamwatch
The National Anti-Scam Centre uses Scamwatch reports to warn others and to get scam numbers blocked. Note the number, the time and what the caller claimed to be. If anyone is in danger, call 000.
- Register on the Do Not Call Register
Registering landlines and mobiles is free and stops most telemarketing calls within 30 days. Charities, political parties, surveys and scammers aren't covered.
- If you lost money or shared details
Call your bank straight away on the number on your card and ask it to stop the payment. Then report it through ReportCyber, which passes cybercrime reports to the Queensland Police Service. If your identity documents or passwords were shared, IDCARE's free support service can help you lock things down.
Nationally, Scamwatch recorded $72.5 million lost to scams that started with a phone call in 2025 (down from $107.2 million), with a median loss of $3,800 per report that lost money, and phone-call scam reports are 73.7% below their 2021 level. Telcos blocked 109.3 million scam calls and 45.2 million scam texts in January to March 2026. Sources: Targeting scams 2025 (National Anti-Scam Centre); ACMA quarterly report, Jan–Mar 2026.
Caloundra numbers: questions and answers
Where is the Caloundra numbering area?
Caloundra is in Queensland, in the Sunshine Coast council area. The nearest other numbering areas are Nambour (25 km), Maleny (29 km) and Bribie Island (32 km).
What area code does Caloundra use?
Caloundra numbers use area code 07. Its register blocks start with 07 53, 07 52 and 07 54. From overseas, drop the 0 and dial +61 7 followed by the eight-digit local number.
What time zone is Caloundra in?
Caloundra is on Australian Eastern Time (AEST, UTC+10), with no daylight saving.
Which carriers hold Caloundra phone numbers?
The ACMA register lists 21 carriers with allocated blocks in Caloundra. By allocated numbers the largest are Telstra (50.6%), Optus Networks (15.2%) and Optus Mobile (10.3%). A number can since have been ported to another provider.
When were Caloundra numbers first allocated?
The oldest block on record for Caloundra was allocated on 30 June 1991 and is held by Telstra; the newest on 19 August 2026, to Symbio Networks.
How do I report a scam call from a Caloundra number?
Report it to Scamwatch. If you lost money, call your bank first, then report it through ReportCyber, which passes it to the Queensland Police Service. Unwanted sales calls go to the Do Not Call Register's complaint form (1300 792 958).
Check a number from Caloundra
Scammers spoof local landline numbers to look nearby. Guides: Australian area codes, how caller ID spoofing works.