Darlington: landline numbers and carriers

Darlington 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 19,000 allocated numbers, held by 19 carriers and spread over the 0345… and 0355… dialling prefixes. That makes Darlington the 91st largest of 475 numbering areas under 03 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 Darlington area — though the line may since have been ported, and caller ID can be spoofed.

Source: ACMA register, data as of 15/10/2026

32blocks in the register
19carriers with allocations
19,000allocated numbers
1991first allocation

Where Darlington 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
Dundonnell (11 km), Derrinallum (11 km), Mortlake (24 km), Lismore (VIC) (27 km), Camperdown (28 km)

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

Map of the Darlington 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 Darlington locality rather than an exact outline; the inset shows where the map sits in Australia. Boundaries: ABS (CC BY 4.0).

How Darlington was numbered

The oldest block in Darlington 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 2015–2019, but allocations here span 35 years. 9 of the blocks are the standard 1,000-number size, 20 are 100-number blocks of the kind the ACMA has issued to VoIP and wholesale carriers since the mid-2000s. 6 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
1990–19943
2000–20044
2005–20095
2010–20143
2015–20197
2020–20246
2025–20294

The carriers in Darlington

Darlington is spread across carriers: SYMBIO NETWORKS PTY LTD leads with 28.9% of allocated numbers ahead of TELSTRA LIMITED on 21.1%, and 19 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), SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1) and PRIMUS TELECOMMUNICATIONS PTY LIMITED (1) hold blocks originally allocated to another carrier.

CarrierBlocksNumbersShareFirst blockLatest block
SYMBIO NETWORKS PTY LTD85,50028.9%23/06/200519/08/2026
TELSTRA LIMITED44,00021.1%30/06/199110/05/2002
SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED23,10016.3%30/03/200014/07/2016
OPTUS MOBILE PTY LIMITED12,00010.5%08/10/200708/10/2007
PRIMUS TELECOMMUNICATIONS PTY LIMITED21,1005.8%24/12/200424/05/2005
CHIME COMMUNICATIONS PTY LTD11,0005.3%14/07/200414/07/2004
OPTUS NETWORKS PTY LIMITED11,0005.3%14/06/200514/06/2005
NETSIP PTY LTD22001.1%14/02/201826/10/2021
ADARGA PTY LTD11000.5%16/09/202516/09/2025
AGILE PTY LTD11000.5%03/04/200703/04/2007
C2A INTERNET.COM.AU PTY. LTD.11000.5%13/07/202313/07/2023
CHECK TECHNOLOGY GROUP PTY LTD11000.5%31/01/202231/01/2022
LMGPS LTD11000.5%23/11/202323/11/2023
NETERA PTY LTD11000.5%24/10/202524/10/2025
PIPE NETWORKS PTY LIMITED11000.5%03/09/201203/09/2012
PIVOTEL SATELLITE PTY LIMITED11000.5%16/04/202516/04/2025
THE TRUSTEE FOR READING FAMILY TRUST11000.5%21/10/201921/10/2019
VIRTUTEL PTY LTD11000.5%20/12/201520/12/2015
WHY PAY MORE 4 LESS PTY LTD11000.5%10/05/201810/05/2018

Number blocks registered for Darlington

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

Block startNumbersOriginal allocateeCurrent holderAllocatedTransferred
0345056200…100=VIRTUTEL PTY LTD20/12/2015—
0345099300…100=SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED14/07/2016—
0345105400…100=NETSIP PTY LTD14/02/2018—
0345116600…100=THE TRUSTEE FOR READING FAMILY TRUST21/10/2019—
0345120600…100=ADARGA PTY LTD16/09/2025—
0345133000…1,000=SYMBIO NETWORKS PTY LTD14/11/2019—
0345136800…100=WHY PAY MORE 4 LESS PTY LTD10/05/2018—
0345140800…100TWILIO AUSTRALIA PTY LTDSYMBIO NETWORKS PTY LTD24/09/202024/02/2021
0345149000…3,000=SYMBIO NETWORKS PTY LTD05/10/2018—
0345187900…100=NETSIP PTY LTD26/10/2021—
0345201000…100=CHECK TECHNOLOGY GROUP PTY LTD31/01/2022—
0345204000…1,000=SYMBIO NETWORKS PTY LTD19/06/2020—
0345213100…100=C2A INTERNET.COM.AU PTY. LTD.13/07/2023—
0345223200…100=LMGPS LTD23/11/2023—
0345235300…100=PIVOTEL SATELLITE PTY LIMITED16/04/2025—
0345247400…100=NETERA PTY LTD24/10/2025—
0345261500…100=SYMBIO NETWORKS PTY LTD19/08/2026—
0355050000…3,000IPTEL PTY LIMITEDSOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED30/03/200001/12/2004
0355089000…1,000ENGIN PTY LIMITEDPRIMUS TELECOMMUNICATIONS PTY LIMITED24/12/200411/08/2015
0355338000…1,000=CHIME COMMUNICATIONS PTY LTD14/07/2004—
0355352100…100=PRIMUS TELECOMMUNICATIONS PTY LIMITED24/05/2005—
0355352200…100GOTALK LIMITEDSYMBIO NETWORKS PTY LTD23/06/200523/08/2013
0355352400…100=AGILE PTY LTD03/04/200703/09/2012
0355352500…100IVOX PTY LTDSYMBIO NETWORKS PTY LTD18/06/201223/06/2014
0355352600…100AAPT LIMITEDPIPE NETWORKS PTY LIMITED03/09/201224/03/2026
0355352700…100=SYMBIO NETWORKS PTY LTD24/04/2014—
0355406000…1,000=OPTUS NETWORKS PTY LIMITED14/06/2005—
0355458000…2,000=OPTUS MOBILE PTY LIMITED08/10/2007—
0355585000…1,000=TELSTRA LIMITED30/06/1991—
0355970000…1,000=TELSTRA LIMITED30/06/1991—
0355971000…1,000=TELSTRA LIMITED10/05/2002—
0355979000…1,000=TELSTRA LIMITED30/06/1991—

Numbering areas next to Darlington in the register

Immediately below and above Darlington's blocks in the 0345… and 0355… prefixes sit Casterton, Cavendish, Chetwynd, Cobden, Coleraine, Coojar, Derrinallum, Dorodong, Dundonnell, Dunkeld, Ecklin and Edenhope.

Numbering areaFirst blockBlocksCarriers
Casterton0345055600…2918
Cavendish0345055700…3018
Chetwynd0345055800…2918
Cobden0345055900…3019
Coleraine0345056000…2918
Coojar0345056100…3018
Derrinallum0345056400…2918
Dorodong0345056500…2818
Dundonnell0345056600…2818
Dunkeld0345056700…2918
Ecklin0345056800…2918
Edenhope0345056900…3119

Had a call from a Darlington 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.

Darlington numbers: questions and answers

Where is the Darlington numbering area?

Darlington is in Victoria, in the Corangamite council area. The nearest other numbering areas are Dundonnell (11 km), Derrinallum (11 km) and Mortlake (24 km).

What area code does Darlington use?

Darlington 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 Darlington in?

Darlington 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 Darlington phone numbers?

The ACMA register lists 19 carriers with allocated blocks in Darlington. By allocated numbers the largest are Symbio Networks (28.9%), Telstra (21.1%) and Soul Pattinson Telecommunications (16.3%). A number can since have been ported to another provider.

When were Darlington numbers first allocated?

The oldest block on record for Darlington 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 Darlington 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 Darlington

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