Mount Barker (SA): landline numbers and carriers
Mount Barker (SA) is one of the town-level numbering areas the ACMA register uses under area code 08 (SA, WA & NT). The register lists 46 number blocks for it with about 166,000 allocated numbers, held by 19 carriers and spread over the 08719…, 08728…, 08839…, 08718…, 08818…, 08848…, 08738…, 08712…, 08722…, 08838… and 08840… dialling prefixes. That makes Mount Barker (SA) the 21st largest of 640 numbering areas under 08 by block count, with 0.59% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Mount Barker (SA) area — though the line may since have been ported, and caller ID can be spoofed.
Source: ACMA register, data as of 14/10/2026
Where Mount Barker (SA) is
- State or territory
- South Australia
- Council area
- Mount Barker
- ABS locality
- Mount Barker (SA)
- Local time
- — ACST, UTC+9:30; ACDT, UTC+10:30 in summer
- Number format
- 08 71xx xxxx; from overseas +61 8 71xx xxxx
- Nearest numbering areas
- Woodside (SA) (15 km), Callington (16 km), Strathalbyn (19 km), Hartley (21 km), Adelaide (30 km)
Locality, council and state: ABS ASGS Edition 3 (CC BY 4.0). Distances are straight-line between localities.
How Mount Barker (SA) was numbered
The oldest block in Mount Barker (SA) 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 — 11 of 46 — date from 2005–2009, but allocations here span 35 years. 28 of the blocks are the standard 1,000-number size, and 12 are 10,000 numbers or larger. 12 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, RSL COM AUSTRALIA PTY LIMITED, SINGTEL OPTUS PTY LIMITED and TWILIO AUSTRALIA PTY LTD as original allocatees of blocks now held by other carriers.
| Period | Blocks allocated |
|---|---|
| 1990–1994 | 7 |
| 1995–1999 | 2 |
| 2000–2004 | 4 |
| 2005–2009 | 11 |
| 2010–2014 | 4 |
| 2015–2019 | 7 |
| 2020–2024 | 7 |
| 2025–2029 | 4 |
The carriers in Mount Barker (SA)
Mount Barker (SA) is spread across carriers: TELSTRA LIMITED leads with 30.1% of allocated numbers ahead of OPTUS NETWORKS PTY LIMITED on 18.1%, 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. OPTUS NETWORKS PTY LIMITED (1), SYMBIO NETWORKS PTY LTD (6) and SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1) hold blocks originally allocated to another carrier.
| Carrier | Blocks | Numbers | Share | First block | Latest block |
|---|---|---|---|---|---|
| TELSTRA LIMITED | 9 | 50,000 | 30.1% | 30/06/1991 | 31/03/2020 |
| OPTUS NETWORKS PTY LIMITED | 3 | 30,000 | 18.1% | 18/05/1993 | 05/04/2007 |
| SYMBIO NETWORKS PTY LTD | 10 | 15,000 | 9% | 23/06/2005 | 19/08/2026 |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 3 | 14,000 | 8.4% | 30/03/2000 | 14/07/2016 |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 4 | 13,000 | 7.8% | 28/10/2002 | 11/02/2014 |
| OPTUS MOBILE PTY LIMITED | 3 | 12,000 | 7.2% | 31/05/2007 | 11/01/2008 |
| CHIME COMMUNICATIONS PTY LTD | 1 | 10,000 | 6% | 14/07/2004 | 14/07/2004 |
| PIPE NETWORKS PTY LIMITED | 1 | 10,000 | 6% | 14/07/1999 | 14/07/1999 |
| NETSIP PTY LTD | 2 | 2,000 | 1.2% | 14/02/2018 | 26/10/2021 |
| ADARGA PTY LTD | 1 | 1,000 | 0.6% | 16/09/2025 | 16/09/2025 |
| AGILE PTY LTD | 1 | 1,000 | 0.6% | 31/05/2005 | 31/05/2005 |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 0.6% | 13/07/2023 | 13/07/2023 |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 0.6% | 31/01/2022 | 31/01/2022 |
| LMGPS LTD | 1 | 1,000 | 0.6% | 23/11/2023 | 23/11/2023 |
| NETERA PTY LTD | 1 | 1,000 | 0.6% | 24/10/2025 | 24/10/2025 |
| PIVOTEL SATELLITE PTY LIMITED | 1 | 1,000 | 0.6% | 16/04/2025 | 16/04/2025 |
| THE TRUSTEE FOR READING FAMILY TRUST | 1 | 1,000 | 0.6% | 21/10/2019 | 21/10/2019 |
| VIRTUTEL PTY LTD | 1 | 1,000 | 0.6% | 20/12/2015 | 20/12/2015 |
| WHY PAY MORE 4 LESS PTY LTD | 1 | 1,000 | 0.6% | 10/05/2018 | 10/05/2018 |
Number blocks registered for Mount Barker (SA)
Every registered block for this area is allocated to a carrier. All 46 blocks, ascending:
| Block start | Numbers | Original allocatee | Current holder | Allocated | Transferred |
|---|---|---|---|---|---|
| 0871203000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 24/10/2007 | 26/08/2013 |
| 0871820000… | 10,000 | = | CHIME COMMUNICATIONS PTY LTD | 14/07/2004 | — |
| 0871844000… | 1,000 | TWILIO AUSTRALIA PTY LTD | SYMBIO NETWORKS PTY LTD | 24/09/2020 | 15/10/2020 |
| 0871847000… | 1,000 | OPTUS NETWORKS PTY LIMITED | OPTUS MOBILE PTY LIMITED | 31/05/2007 | — |
| 0871870000… | 10,000 | = | OPTUS MOBILE PTY LIMITED | 11/01/2008 | — |
| 0871900000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 10/04/2015 | — |
| 0871901000… | 1,000 | VOCUS PTY LTD | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 11/02/2014 | 08/07/2016 |
| 0871902000… | 1,000 | = | VIRTUTEL PTY LTD | 20/12/2015 | — |
| 0871903000… | 1,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 14/07/2016 | — |
| 0871904000… | 1,000 | = | NETSIP PTY LTD | 14/02/2018 | — |
| 0871905000… | 1,000 | = | ADARGA PTY LTD | 16/09/2025 | — |
| 0871906000… | 1,000 | = | THE TRUSTEE FOR READING FAMILY TRUST | 21/10/2019 | — |
| 0871907000… | 1,000 | = | NETSIP PTY LTD | 26/10/2021 | — |
| 0871908000… | 1,000 | = | WHY PAY MORE 4 LESS PTY LTD | 10/05/2018 | — |
| 0871909000… | 5,000 | = | SYMBIO NETWORKS PTY LTD | 14/11/2019 | — |
| 0871914000… | 1,000 | = | CHECK TECHNOLOGY GROUP PTY LTD | 31/01/2022 | — |
| 0871915000… | 1,000 | = | C2A INTERNET.COM.AU PTY. LTD. | 13/07/2023 | — |
| 0871916000… | 1,000 | = | LMGPS LTD | 23/11/2023 | — |
| 0871917000… | 1,000 | = | PIVOTEL SATELLITE PTY LIMITED | 16/04/2025 | — |
| 0871918000… | 1,000 | = | NETERA PTY LTD | 24/10/2025 | — |
| 0871919000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/08/2026 | — |
| 0871928000… | 2,000 | = | SYMBIO NETWORKS PTY LTD | 19/06/2020 | — |
| 0872283000… | 1,000 | RSL COM AUSTRALIA PTY LIMITED | SYMBIO NETWORKS PTY LTD | 16/01/2007 | 06/10/2009 |
| 0872800000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 05/04/2007 | — |
| 0872821000… | 1,000 | = | OPTUS MOBILE PTY LIMITED | 06/09/2007 | — |
| 0872824000… | 1,000 | VOXBONE | SYMBIO NETWORKS PTY LTD | 10/09/2010 | 21/02/2011 |
| 0872826000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 03/02/2012 | — |
| 0872861000… | 1,000 | IVOX PTY LTD | SYMBIO NETWORKS PTY LTD | 18/06/2012 | 24/06/2014 |
| 0872870000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 24/08/2006 | — |
| 0873801000… | 3,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 18/12/2009 | — |
| 0873807000… | 1,000 | = | TELSTRA LIMITED | 28/05/2007 | — |
| 0881830000… | 10,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 28/10/2002 | — |
| 0881853000… | 1,000 | = | AGILE PTY LTD | 31/05/2005 | 09/09/2010 |
| 0881854000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 23/06/2005 | 18/07/2013 |
| 0881880000… | 10,000 | = | TELSTRA LIMITED | 29/06/1998 | — |
| 0883880000… | 10,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0883910000… | 10,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0883930000… | 2,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0883936000… | 4,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0883980000… | 10,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0883990000… | 10,000 | SINGTEL OPTUS PTY LIMITED | OPTUS NETWORKS PTY LIMITED | 18/05/1993 | 10/02/2003 |
| 0884067000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0884810000… | 10,000 | IPTEL PTY LIMITED | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 30/03/2000 | 01/12/2004 |
| 0884850000… | 10,000 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 14/07/1999 | 24/03/2026 |
| 0884864000… | 1,000 | ENGIN PTY LIMITED | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 24/12/2004 | 11/08/2015 |
| 0884866000… | 2,000 | = | TELSTRA LIMITED | 31/03/2020 | — |
Numbering areas next to Mount Barker (SA) in the register
Immediately below and above Mount Barker (SA)'s blocks in the 08719…, 08728…, 08839…, 08718…, 08818…, 08848…, 08738…, 08712…, 08722…, 08838… and 08840… prefixes sit Adelaide, Woodside (SA), Salisbury and Mclaren Vale.
| Numbering area | First block | Blocks | Carriers |
|---|---|---|---|
| Adelaide | 0871000000… | 190 | 14 |
| Woodside (SA) | 0871201000… | 27 | 10 |
| Salisbury | 0871800000… | 55 | 21 |
| Mclaren Vale | 0871830000… | 52 | 20 |
Had a call from a Mount Barker (SA) 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 South Australia Police. 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.
Mount Barker (SA) numbers: questions and answers
Where is the Mount Barker (SA) numbering area?
Mount Barker (SA) is in South Australia, in the Mount Barker council area. The nearest other numbering areas are Woodside (SA) (15 km), Callington (16 km) and Strathalbyn (19 km).
What area code does Mount Barker (SA) use?
Mount Barker (SA) numbers use area code 08. Its register blocks start with 08 71, 08 72, 08 83, 08 81, 08 84 and 08 73. From overseas, drop the 0 and dial +61 8 followed by the eight-digit local number.
What time zone is Mount Barker (SA) in?
Mount Barker (SA) 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 Mount Barker (SA) phone numbers?
The ACMA register lists 19 carriers with allocated blocks in Mount Barker (SA). By allocated numbers the largest are Telstra (30.1%), Optus Networks (18.1%) and Symbio Networks (9%). A number can since have been ported to another provider.
When were Mount Barker (SA) numbers first allocated?
The oldest block on record for Mount Barker (SA) 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 Mount Barker (SA) 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 Mount Barker (SA)
Scammers spoof local landline numbers to look nearby. Guides: Australian area codes, how caller ID spoofing works.