Calen: landline numbers and carriers

Calen is one of the town-level numbering areas the ACMA register uses under area code 07 (QLD). The register lists 32 number blocks for it with about 14,100 allocated numbers, held by 18 carriers and spread over the 0748…, 0749… and 0779… dialling prefixes. That makes Calen the 110th largest of 409 numbering areas under 07 by block count, with 0.06% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Calen area — though the line may since have been ported, and caller ID can be spoofed.

Source: ACMA register, data as of 16/10/2026

32blocks in the register
18carriers with allocations
14,100allocated numbers
1991first allocation

Where Calen is

State or territory
Queensland
Council area
Mackay
Local time
— AEST, UTC+10, no daylight saving
Number format
07 48xx xxxx; from overseas +61 7 48xx xxxx
Nearest numbering areas
Gargett (29 km), Finch Hatton (29 km), Lethebrook (40 km), Walkerston (44 km), Mackay (54 km)

Locality, council and state: ABS ASGS Edition 3 (CC BY 4.0). Distances are straight-line between localities.

Map of the Calen numbering area in Queensland and the nearest other numbering areas
Shaded: Mackay council area. The ACMA doesn't publish numbering-area boundaries, so the dot marks the Calen locality rather than an exact outline; the inset shows where the map sits in Australia. Boundaries: ABS (CC BY 4.0).

How Calen was numbered

The oldest block in Calen 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 — 7 of 32 — date from 2020–2024, but allocations here span 35 years. 10 of the blocks are the standard 1,000-number size, 21 are 100-number blocks of the kind the ACMA has issued to VoIP and wholesale carriers since the mid-2000s. 7 allocated blocks have changed hands since they were first issued: the register still names AAPT LIMITED, ENGIN PTY LIMITED, GOTALK LIMITED, IPTEL PTY LIMITED, IVOX PTY LTD and TWILIO AUSTRALIA PTY LTD as original allocatees of blocks now held by other carriers.

PeriodBlocks allocated
1990–19942
1995–19991
2000–20042
2005–20096
2010–20144
2015–20196
2020–20247
2025–20294

The carriers in Calen

Calen is spread across carriers: TELSTRA LIMITED leads with 28.4% of allocated numbers ahead of SYMBIO NETWORKS PTY LTD on 17.7%, and 18 carriers hold blocks in total. TELSTRA LIMITED has the longest tenure, with a block dated 30/06/1991; SYMBIO NETWORKS PTY LTD received the newest, on 19/08/2026. SYMBIO NETWORKS PTY LTD (3), PIPE NETWORKS PTY LIMITED (2) and SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1) hold blocks originally allocated to another carrier.

CarrierBlocksNumbersShareFirst blockLatest block
TELSTRA LIMITED44,00028.4%30/06/199122/04/2008
SYMBIO NETWORKS PTY LTD72,50017.7%23/06/200519/08/2026
OPTUS MOBILE PTY LIMITED12,00014.2%03/10/200703/10/2007
PIPE NETWORKS PTY LIMITED21,1007.8%03/09/201203/06/2020
SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED21,1007.8%30/03/200014/07/2016
CHIME COMMUNICATIONS PTY LTD11,0007.1%14/07/200414/07/2004
OPTUS NETWORKS PTY LIMITED11,0007.1%10/06/200510/06/2005
PRIMUS TELECOMMUNICATIONS PTY LIMITED33002.1%20/07/200503/02/2012
NETSIP PTY LTD22001.4%14/02/201826/10/2021
ADARGA PTY LTD11000.7%16/09/202516/09/2025
C2A INTERNET.COM.AU PTY. LTD.11000.7%13/07/202313/07/2023
CHECK TECHNOLOGY GROUP PTY LTD11000.7%31/01/202231/01/2022
LMGPS LTD11000.7%23/11/202323/11/2023
NETERA PTY LTD11000.7%24/10/202524/10/2025
PIVOTEL SATELLITE PTY LIMITED11000.7%16/04/202516/04/2025
THE TRUSTEE FOR READING FAMILY TRUST11000.7%21/10/201921/10/2019
VIRTUTEL PTY LTD11000.7%20/12/201520/12/2015
WHY PAY MORE 4 LESS PTY LTD11000.7%10/05/201810/05/2018

Number blocks registered for Calen

Every registered block for this area is allocated to a carrier. All 32 blocks, ascending:

Block startNumbersOriginal allocateeCurrent holderAllocatedTransferred
0748007000…100TWILIO AUSTRALIA PTY LTDSYMBIO NETWORKS PTY LTD24/09/202024/02/2021
0748016900…100=VIRTUTEL PTY LTD20/12/2015—
0748044100…100=PRIMUS TELECOMMUNICATIONS PTY LIMITED29/05/2006—
0748044200…100GOTALK LIMITEDSYMBIO NETWORKS PTY LTD23/06/200523/08/2013
0748044400…100=SYMBIO NETWORKS PTY LTD24/04/2014—
0748044500…100=PRIMUS TELECOMMUNICATIONS PTY LIMITED03/02/2012—
0748044600…100IVOX PTY LTDSYMBIO NETWORKS PTY LTD18/06/201212/06/2014
0748044700…100AAPT LIMITEDPIPE NETWORKS PTY LIMITED03/09/201224/03/2026
0748044800…100ENGIN PTY LIMITEDPRIMUS TELECOMMUNICATIONS PTY LIMITED20/07/200511/08/2015
0748048300…100=NETSIP PTY LTD26/10/2021—
0748125000…1,000=OPTUS NETWORKS PTY LIMITED10/06/2005—
0748406000…1,000=TELSTRA LIMITED22/04/2008—
0748515000…1,000=SYMBIO NETWORKS PTY LTD30/05/2016—
0748584300…100=SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED14/07/2016—
0748601500…100=NETSIP PTY LTD14/02/2018—
0748616900…100=THE TRUSTEE FOR READING FAMILY TRUST21/10/2019—
0748681000…100=ADARGA PTY LTD16/09/2025—
0748690000…1,000AAPT LIMITEDPIPE NETWORKS PTY LIMITED03/06/202024/03/2026
0748695200…100=CHECK TECHNOLOGY GROUP PTY LTD31/01/2022—
0748700300…100=WHY PAY MORE 4 LESS PTY LTD10/05/2018—
0748775700…100=C2A INTERNET.COM.AU PTY. LTD.13/07/2023—
0748819000…1,000=SYMBIO NETWORKS PTY LTD19/06/2020—
0748913000…100=LMGPS LTD23/11/2023—
0748941300…100=PIVOTEL SATELLITE PTY LIMITED16/04/2025—
0748952700…100=NETERA PTY LTD24/10/2025—
0749030000…1,000IPTEL PTY LIMITEDSOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED30/03/200001/12/2004
0749299000…1,000=CHIME COMMUNICATIONS PTY LTD14/07/2004—
0749474000…1,000=TELSTRA LIMITED30/06/1991—
0749497000…1,000=TELSTRA LIMITED16/02/1999—
0749588000…1,000=TELSTRA LIMITED30/06/1991—
0749987000…2,000=OPTUS MOBILE PTY LIMITED03/10/2007—
0779000200…100=SYMBIO NETWORKS PTY LTD19/08/2026—

Numbering areas next to Calen in the register

Immediately below and above Calen's blocks in the 0748…, 0749… and 0779… prefixes sit Blackwater, Goovigen, Broadsound (Ext), Buckland (Ext), Mardale, Byfield, Moura, Calliope, Cannon Valley, Nathan Gorge (Ext), Capella and Carbine Creek.

Numbering areaFirst blockBlocksCarriers
Blackwater0748005000…4019
Goovigen0748005100…2818
Broadsound (Ext)0748005300…3118
Buckland (Ext)0748006000…2918
Mardale0748006100…2818
Byfield0748006300…3118
Moura0748007100…3019
Calliope0748007300…3219
Cannon Valley0748008000…4719
Nathan Gorge (Ext)0748008100…2718
Capella0748008300…3218
Carbine Creek0748009000…2918

Had a call from a Calen number?

No clear pattern in reports on these numbers yet. If a call worried you:

  1. 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.

  2. 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.

    Report to Scamwatch ↗

  3. 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.

    Do Not Call Register ↗

  4. 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.

    ReportCyber ↗IDCARE ↗

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.

Calen numbers: questions and answers

Where is the Calen numbering area?

Calen is in Queensland, in the Mackay council area. The nearest other numbering areas are Gargett (29 km), Finch Hatton (29 km) and Lethebrook (40 km).

What area code does Calen use?

Calen numbers use area code 07. Its register blocks start with 07 48, 07 49 and 07 79. From overseas, drop the 0 and dial +61 7 followed by the eight-digit local number.

What time zone is Calen in?

Calen is on Australian Eastern Time (AEST, UTC+10), with no daylight saving.

Which carriers hold Calen phone numbers?

The ACMA register lists 18 carriers with allocated blocks in Calen. By allocated numbers the largest are Telstra (28.4%), Symbio Networks (17.7%) and Optus Mobile (14.2%). A number can since have been ported to another provider.

When were Calen numbers first allocated?

The oldest block on record for Calen 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 Calen 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 Calen

Scammers spoof local landline numbers to look nearby. Guides: Australian area codes, how caller ID spoofing works.