Strathalbyn: landline numbers and carriers

Strathalbyn is one of the town-level numbering areas the ACMA register uses under area code 08 (SA, WA & NT). The register lists 37 number blocks for it with about 28,300 allocated numbers, held by 20 carriers and spread over the 0875… and 0885… dialling prefixes. That makes Strathalbyn the 45th largest of 640 numbering areas under 08 by block count, with 0.1% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Strathalbyn area — though the line may since have been ported, and caller ID can be spoofed.

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

37blocks in the register
20carriers with allocations
28,300allocated numbers
1991first allocation

Where Strathalbyn is

State or territory
South Australia
Council area
Alexandrina
Local time
— ACST, UTC+9:30; ACDT, UTC+10:30 in summer
Number format
08 75xx xxxx; from overseas +61 8 75xx xxxx
Nearest numbering areas
Hartley (16 km), Milang (17 km), Langhorne Creek (18 km), Mount Barker (SA) (19 km), Callington (22 km)

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

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

How Strathalbyn was numbered

The oldest block in Strathalbyn 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 37 — date from 2005–2009, but allocations here span 35 years. 11 of the blocks are the standard 1,000-number size, 23 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. 8 allocated blocks have changed hands since they were first issued: the register still names AAPT LIMITED, ADAM INTERNET PTY LTD, 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
2000–20043
2005–20098
2010–20145
2015–20198
2020–20246
2025–20295

The carriers in Strathalbyn

Strathalbyn is spread across carriers: TELSTRA LIMITED leads with 38.9% of allocated numbers ahead of SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED on 11%, 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. SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1), SYMBIO NETWORKS PTY LTD (3) and CHIME COMMUNICATIONS PTY LTD (1) hold blocks originally allocated to another carrier.

CarrierBlocksNumbersShareFirst blockLatest block
TELSTRA LIMITED211,00038.9%30/06/199130/06/1991
SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED23,10011%30/03/200014/07/2016
SYMBIO NETWORKS PTY LTD82,6009.2%24/06/200519/08/2026
CHIME COMMUNICATIONS PTY LTD22,0007.1%14/07/200409/12/2004
OPTUS NETWORKS PTY LIMITED22,0007.1%14/06/200522/09/2006
OPTUS MOBILE PTY LIMITED12,0007.1%09/10/200709/10/2007
NETSIP PTY LTD31,2004.2%14/02/201812/05/2025
PRIMUS TELECOMMUNICATIONS PTY LIMITED31,2004.2%20/07/200512/06/2015
AGILE PTY LTD21,1003.9%01/06/200515/02/2008
PIPE NETWORKS PTY LIMITED21,1003.9%24/09/201204/05/2016
ADARGA PTY LTD11000.4%16/09/202516/09/2025
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
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 Strathalbyn

Every registered block for this area is allocated to a carrier. All 37 blocks, ascending:

Block startNumbersOriginal allocateeCurrent holderAllocatedTransferred
0875018000…1,000=OPTUS NETWORKS PTY LIMITED14/06/2005—
0875117000…2,000=OPTUS MOBILE PTY LIMITED09/10/2007—
0875228000…1,000=SYMBIO NETWORKS PTY LTD06/09/2012—
0875241000…1,000=PRIMUS TELECOMMUNICATIONS PTY LIMITED12/06/2015—
0875250000…100=VIRTUTEL PTY LTD20/12/2015—
0875296900…100=SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED14/07/2016—
0875304800…100=NETSIP PTY LTD14/02/2018—
0875319600…100=THE TRUSTEE FOR READING FAMILY TRUST21/10/2019—
0875329600…100=ADARGA PTY LTD16/09/2025—
0875343400…100=WHY PAY MORE 4 LESS PTY LTD10/05/2018—
0875439200…100=GENNEXT ENTERPRISES PTY LTD03/10/2019—
0875446400…100=NETSIP PTY LTD26/10/2021—
0875460400…100=CHECK TECHNOLOGY GROUP PTY LTD31/01/2022—
0875498400…100=C2A INTERNET.COM.AU PTY. LTD.13/07/2023—
0875512300…100=LMGPS LTD23/11/2023—
0875532200…100=PIVOTEL SATELLITE PTY LIMITED16/04/2025—
0875537000…1,000=SYMBIO NETWORKS PTY LTD19/06/2020—
0875538000…1,000=NETSIP PTY LTD12/05/2025—
0875604100…100=NETERA PTY LTD24/10/2025—
0875620000…100=SYMBIO NETWORKS PTY LTD19/08/2026—
0875627800…100TWILIO AUSTRALIA PTY LTDSYMBIO NETWORKS PTY LTD24/09/202024/02/2021
0875999000…1,000=OPTUS NETWORKS PTY LIMITED22/09/2006—
0885190000…3,000IPTEL PTY LIMITEDSOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED30/03/200001/12/2004
0885360000…10,000=TELSTRA LIMITED30/06/1991—
0885399000…1,000=TELSTRA LIMITED30/06/1991—
0885434000…1,000AAPT LIMITEDPIPE NETWORKS PTY LIMITED04/05/201624/03/2026
0885487000…1,000ADAM INTERNET PTY LTDCHIME COMMUNICATIONS PTY LTD09/12/200428/02/2015
0885491100…100=PRIMUS TELECOMMUNICATIONS PTY LIMITED23/05/2006—
0885491200…100GOTALK LIMITEDSYMBIO NETWORKS PTY LTD24/06/200523/07/2013
0885491400…100=SYMBIO NETWORKS PTY LTD10/08/2010—
0885491500…100IVOX PTY LTDSYMBIO NETWORKS PTY LTD18/06/201216/06/2014
0885491600…100AAPT LIMITEDPIPE NETWORKS PTY LIMITED24/09/201224/03/2026
0885491700…100=SYMBIO NETWORKS PTY LTD24/04/2014—
0885491800…100ENGIN PTY LIMITEDPRIMUS TELECOMMUNICATIONS PTY LIMITED20/07/200511/08/2015
0885491900…100=AGILE PTY LTD01/06/200518/03/2011
0885506000…1,000=AGILE PTY LTD15/02/200818/03/2011
0885918000…1,000=CHIME COMMUNICATIONS PTY LTD14/07/2004—

Numbering areas next to Strathalbyn in the register

Immediately below and above Strathalbyn's blocks in the 0875… and 0885… prefixes sit Callington, Hartley, Langhorne Creek, Milang, Murray Bridge, Mypolonga, Bow Hill, Bower, Eudunda, Kapunda, Mannum and Mount Pleasant.

Numbering areaFirst blockBlocksCarriers
Callington0875012000…3319
Hartley0875013000…3219
Langhorne Creek0875014000…3219
Milang0875015000…3219
Murray Bridge0875016000…4619
Mypolonga0875017000…3119
Bow Hill0875019000…2919
Bower0875020000…3019
Eudunda0875021000…3019
Kapunda0875022000…3119
Mannum0875023000…3219
Mount Pleasant0875024000…3119

Had a call from a Strathalbyn 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 South Australia 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.

Strathalbyn numbers: questions and answers

Where is the Strathalbyn numbering area?

Strathalbyn is in South Australia, in the Alexandrina council area. The nearest other numbering areas are Hartley (16 km), Milang (17 km) and Langhorne Creek (18 km).

What area code does Strathalbyn use?

Strathalbyn numbers use area code 08. Its register blocks start with 08 75 and 08 85. From overseas, drop the 0 and dial +61 8 followed by the eight-digit local number.

What time zone is Strathalbyn in?

Strathalbyn is on Australian Central Time (ACST, UTC+9:30), with daylight saving (ACDT, UTC+10:30) from the first Sunday in October to the first Sunday in April.

Which carriers hold Strathalbyn phone numbers?

The ACMA register lists 20 carriers with allocated blocks in Strathalbyn. By allocated numbers the largest are Telstra (38.9%), Soul Pattinson Telecommunications (11%) and Symbio Networks (9.2%). A number can since have been ported to another provider.

When were Strathalbyn numbers first allocated?

The oldest block on record for Strathalbyn 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 Strathalbyn number?

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

Check a number from Strathalbyn

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