Timboon: landline numbers and carriers

Timboon is one of the town-level numbering areas the ACMA register uses under area code 03 (VIC & TAS). The register lists 32 number blocks for it with about 28,200 allocated numbers, held by 20 carriers and spread over the 0345… and 0355… dialling prefixes. That makes Timboon the 91st largest of 475 numbering areas under 03 by block count, with 0.08% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Timboon 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
20carriers with allocations
28,200allocated numbers
1991first allocation

Where Timboon is

State or territory
Victoria
Council area
Corangamite
Local time
— AEST, UTC+10; AEDT, UTC+11 in summer
Number format
03 45xx xxxx; from overseas +61 3 45xx xxxx
Nearest numbering areas
Nirranda (17 km), Cobden (20 km), South Purrumbete (26 km), Panmure (26 km), Terang (27 km)

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

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

How Timboon was numbered

The oldest block in Timboon 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 — 8 of 32 — date from 2015–2019, but allocations here span 35 years. 5 of the blocks are the standard 1,000-number size, 22 are 100-number blocks of the kind the ACMA has issued to VoIP and wholesale carriers since the mid-2000s, and 1 is 10,000 numbers or larger. 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, TWILIO AUSTRALIA PTY LTD and VOCUS PTY LTD as original allocatees of blocks now held by other carriers.

PeriodBlocks allocated
1990–19942
2000–20043
2005–20095
2010–20144
2015–20198
2020–20246
2025–20294

The carriers in Timboon

Timboon is spread across carriers: TELSTRA LIMITED leads with 39% of allocated numbers ahead of SYMBIO NETWORKS PTY LTD on 16%, and 20 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), OPTUS NETWORKS PTY LIMITED (1) and SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1) hold blocks originally allocated to another carrier.

CarrierBlocksNumbersShareFirst blockLatest block
TELSTRA LIMITED211,00039%30/06/199130/06/1991
SYMBIO NETWORKS PTY LTD74,50016%23/06/200519/08/2026
OPTUS NETWORKS PTY LIMITED34,10014.5%17/06/200521/11/2017
SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED23,10011%30/03/200014/07/2016
OPTUS MOBILE PTY LIMITED12,0007.1%08/10/200708/10/2007
PRIMUS TELECOMMUNICATIONS PTY LIMITED21,1003.9%24/12/200424/05/2005
CHIME COMMUNICATIONS PTY LTD11,0003.5%14/07/200414/07/2004
NETSIP PTY LTD22000.7%14/02/201826/10/2021
ADARGA PTY LTD11000.4%16/09/202516/09/2025
AGILE PTY LTD11000.4%03/04/200703/04/2007
C2A INTERNET.COM.AU PTY. LTD.11000.4%13/07/202313/07/2023
CHECK TECHNOLOGY GROUP PTY LTD11000.4%31/01/202231/01/2022
GENNEXT ENTERPRISES PTY LTD11000.4%03/10/201903/10/2019
LMGPS LTD11000.4%23/11/202323/11/2023
NETERA PTY LTD11000.4%24/10/202524/10/2025
PIPE NETWORKS PTY LIMITED11000.4%03/09/201203/09/2012
PIVOTEL SATELLITE PTY LIMITED11000.4%16/04/202516/04/2025
THE TRUSTEE FOR READING FAMILY TRUST11000.4%21/10/201921/10/2019
VIRTUTEL PTY LTD11000.4%20/12/201520/12/2015
WHY PAY MORE 4 LESS PTY LTD11000.4%10/05/201810/05/2018

Number blocks registered for Timboon

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

Block startNumbersOriginal allocateeCurrent holderAllocatedTransferred
0345059300…100=VIRTUTEL PTY LTD20/12/2015—
0345102400…100=SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED14/07/2016—
0345108500…100=NETSIP PTY LTD14/02/2018—
0345119700…100=THE TRUSTEE FOR READING FAMILY TRUST21/10/2019—
0345124000…3,000=OPTUS NETWORKS PTY LIMITED21/11/2017—
0345129700…100=ADARGA PTY LTD16/09/2025—
0345139900…100=WHY PAY MORE 4 LESS PTY LTD10/05/2018—
0345164000…3,000=SYMBIO NETWORKS PTY LTD05/10/2018—
0345180100…100=GENNEXT ENTERPRISES PTY LTD03/10/2019—
0345180900…100TWILIO AUSTRALIA PTY LTDSYMBIO NETWORKS PTY LTD24/09/202024/02/2021
0345197000…100=NETSIP PTY LTD26/10/2021—
0345207100…100=CHECK TECHNOLOGY GROUP PTY LTD31/01/2022—
0345219200…100=C2A INTERNET.COM.AU PTY. LTD.13/07/2023—
0345229300…100=LMGPS LTD23/11/2023—
0345243400…100=PIVOTEL SATELLITE PTY LIMITED16/04/2025—
0345253500…100=NETERA PTY LTD24/10/2025—
0345266000…1,000=SYMBIO NETWORKS PTY LTD19/06/2020—
0345267600…100=SYMBIO NETWORKS PTY LTD19/08/2026—
0355019000…1,000ENGIN PTY LIMITEDPRIMUS TELECOMMUNICATIONS PTY LIMITED24/12/200411/08/2015
0355153000…3,000IPTEL PTY LIMITEDSOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED30/03/200001/12/2004
0355329000…1,000=CHIME COMMUNICATIONS PTY LTD14/07/2004—
0355361100…100=PRIMUS TELECOMMUNICATIONS PTY LIMITED24/05/2005—
0355361200…100GOTALK LIMITEDSYMBIO NETWORKS PTY LTD23/06/200526/08/2013
0355361400…100=AGILE PTY LTD03/04/200703/09/2012
0355361500…100VOCUS PTY LTDOPTUS NETWORKS PTY LIMITED13/08/201022/11/2010
0355361600…100IVOX PTY LTDSYMBIO NETWORKS PTY LTD18/06/201223/06/2014
0355361700…100AAPT LIMITEDPIPE NETWORKS PTY LIMITED03/09/201224/03/2026
0355361800…100=SYMBIO NETWORKS PTY LTD24/04/2014—
0355415000…1,000=OPTUS NETWORKS PTY LIMITED17/06/2005—
0355476000…2,000=OPTUS MOBILE PTY LIMITED08/10/2007—
0355586000…1,000=TELSTRA LIMITED30/06/1991—
0355980000…10,000=TELSTRA LIMITED30/06/1991—

Numbering areas next to Timboon in the register

Immediately below and above Timboon's blocks in the 0345… and 0355… prefixes sit Mortlake, Penshurst, Pomborneit, South Purrumbete, Strathdownie, Terang and Tyrendarra.

Numbering areaFirst blockBlocksCarriers
Mortlake0345057900…3118
Penshurst0345058400…3019
Pomborneit0345058500…3019
South Purrumbete0345058900…2919
Strathdownie0345059000…2919
Terang0345059200…3320
Tyrendarra0345059400…2919

Had a call from a Timboon 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 Victoria Police. 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.

Timboon numbers: questions and answers

Where is the Timboon numbering area?

Timboon is in Victoria, in the Corangamite council area. The nearest other numbering areas are Nirranda (17 km), Cobden (20 km) and South Purrumbete (26 km).

What area code does Timboon use?

Timboon numbers use area code 03. Its register blocks start with 03 45 and 03 55. From overseas, drop the 0 and dial +61 3 followed by the eight-digit local number.

What time zone is Timboon in?

Timboon is on Australian Eastern Time (AEST, UTC+10), with daylight saving (AEDT, UTC+11) from the first Sunday in October to the first Sunday in April.

Which carriers hold Timboon phone numbers?

The ACMA register lists 20 carriers with allocated blocks in Timboon. By allocated numbers the largest are Telstra (39%), Symbio Networks (16%) and Optus Networks (14.5%). A number can since have been ported to another provider.

When were Timboon numbers first allocated?

The oldest block on record for Timboon 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 Timboon number?

Report it to Scamwatch. If you lost money, call your bank first, then report it through ReportCyber, which passes it to Victoria Police. Unwanted sales calls go to the Do Not Call Register's complaint form (1300 792 958).

Check a number from Timboon

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