Mount Gambier: landline numbers and carriers
Mount Gambier is one of the town-level numbering areas the ACMA register uses under area code 08 (SA, WA & NT). The register lists 49 number blocks for it with about 107,000 allocated numbers, held by 19 carriers and spread over the 0887… and 0877… dialling prefixes. That makes Mount Gambier the 16th largest of 640 numbering areas under 08 by block count, with 0.38% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Mount Gambier area — though the line may since have been ported, and caller ID can be spoofed.
Source: ACMA register, data as of 16/10/2026
Where Mount Gambier is
- State or territory
- South Australia
- Council area
- Mount Gambier
- Local time
- — ACST, UTC+9:30; ACDT, UTC+10:30 in summer
- Number format
- 08 87xx xxxx; from overseas +61 8 87xx xxxx
- Nearest numbering areas
- Tarpeena (20 km), Kongorong (23 km), Port Macdonnell (25 km), Strathdownie (31 km, area code 03), Tantanoola (32 km)
Locality, council and state: ABS ASGS Edition 3 (CC BY 4.0). Distances are straight-line between localities.
How Mount Gambier was numbered
The oldest block in Mount Gambier 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 49 — date from 2015–2019, but allocations here span 35 years. 39 of the blocks are the standard 1,000-number size, and 1 is 10,000 numbers or larger. 10 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, TWILIO AUSTRALIA PTY LTD and VOCUS PTY LTD as original allocatees of blocks now held by other carriers.
| Period | Blocks allocated |
|---|---|
| 1990–1994 | 4 |
| 1995–1999 | 1 |
| 2000–2004 | 6 |
| 2005–2009 | 9 |
| 2010–2014 | 5 |
| 2015–2019 | 11 |
| 2020–2024 | 7 |
| 2025–2029 | 6 |
The carriers in Mount Gambier
TELSTRA LIMITED holds the largest share here with 53.3% of allocated numbers across 7 blocks; SYMBIO NETWORKS PTY LTD is second with 8.4%, and 17 other carriers hold the rest. 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 (4), OPTUS NETWORKS PTY LIMITED (1) and PRIMUS TELECOMMUNICATIONS PTY LIMITED (1) hold blocks originally allocated to another carrier.
| Carrier | Blocks | Numbers | Share | First block | Latest block |
|---|---|---|---|---|---|
| TELSTRA LIMITED | 7 | 57,000 | 53.3% | 30/06/1991 | 02/03/2020 |
| SYMBIO NETWORKS PTY LTD | 9 | 9,000 | 8.4% | 12/11/2004 | 19/08/2026 |
| OPTUS NETWORKS PTY LIMITED | 6 | 8,000 | 7.5% | 14/06/2005 | 11/08/2015 |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 5 | 6,000 | 5.6% | 24/12/2004 | 15/03/2017 |
| PIPE NETWORKS PTY LIMITED | 2 | 4,000 | 3.7% | 14/07/1999 | 30/11/2000 |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 4,000 | 3.7% | 30/03/2000 | 14/07/2016 |
| NETERA PTY LTD | 3 | 3,000 | 2.8% | 24/10/2025 | 24/10/2025 |
| AGILE PTY LTD | 2 | 2,000 | 1.9% | 01/06/2005 | 18/01/2010 |
| CHIME COMMUNICATIONS PTY LTD | 2 | 2,000 | 1.9% | 14/07/2004 | 09/12/2004 |
| NETSIP PTY LTD | 2 | 2,000 | 1.9% | 14/02/2018 | 26/10/2021 |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 1.9% | 04/10/2007 | 04/10/2007 |
| ADARGA PTY LTD | 1 | 1,000 | 0.9% | 16/09/2025 | 16/09/2025 |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 0.9% | 13/07/2023 | 13/07/2023 |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 0.9% | 31/01/2022 | 31/01/2022 |
| LMGPS LTD | 1 | 1,000 | 0.9% | 23/11/2023 | 23/11/2023 |
| PIVOTEL SATELLITE PTY LIMITED | 1 | 1,000 | 0.9% | 16/04/2025 | 16/04/2025 |
| THE TRUSTEE FOR READING FAMILY TRUST | 1 | 1,000 | 0.9% | 21/10/2019 | 21/10/2019 |
| VIRTUTEL PTY LTD | 1 | 1,000 | 0.9% | 20/12/2015 | 20/12/2015 |
| WHY PAY MORE 4 LESS PTY LTD | 1 | 1,000 | 0.9% | 10/05/2018 | 10/05/2018 |
Number blocks registered for Mount Gambier
Every registered block for this area is allocated to a carrier. All 49 blocks, ascending:
| Block start | Numbers | Original allocatee | Current holder | Allocated | Transferred |
|---|---|---|---|---|---|
| 0877019000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 24/04/2014 | — |
| 0877042000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 10/04/2015 | — |
| 0877043000… | 3,000 | = | OPTUS NETWORKS PTY LIMITED | 11/08/2015 | — |
| 0877068000… | 1,000 | = | VIRTUTEL PTY LTD | 20/12/2015 | — |
| 0877109000… | 1,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 14/07/2016 | — |
| 0877150000… | 1,000 | = | NETSIP PTY LTD | 14/02/2018 | — |
| 0877169000… | 2,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 15/03/2017 | — |
| 0877193000… | 1,000 | = | ADARGA PTY LTD | 16/09/2025 | — |
| 0877232000… | 2,000 | = | TELSTRA LIMITED | 10/02/2015 | — |
| 0877234000… | 1,000 | = | THE TRUSTEE FOR READING FAMILY TRUST | 21/10/2019 | — |
| 0877253000… | 7,000 | = | TELSTRA LIMITED | 03/07/2017 | — |
| 0877325000… | 1,000 | = | WHY PAY MORE 4 LESS PTY LTD | 10/05/2018 | — |
| 0877344000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 14/11/2019 | — |
| 0877349000… | 1,000 | = | NETSIP PTY LTD | 26/10/2021 | — |
| 0877350000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/06/2020 | — |
| 0877398000… | 2,000 | = | TELSTRA LIMITED | 02/03/2020 | — |
| 0877437000… | 1,000 | TWILIO AUSTRALIA PTY LTD | SYMBIO NETWORKS PTY LTD | 24/09/2020 | 15/10/2020 |
| 0877474000… | 1,000 | = | CHECK TECHNOLOGY GROUP PTY LTD | 31/01/2022 | — |
| 0877515000… | 1,000 | = | C2A INTERNET.COM.AU PTY. LTD. | 13/07/2023 | — |
| 0877556000… | 1,000 | = | LMGPS LTD | 23/11/2023 | — |
| 0877597000… | 1,000 | = | PIVOTEL SATELLITE PTY LIMITED | 16/04/2025 | — |
| 0877616000… | 1,000 | = | NETERA PTY LTD | 24/10/2025 | — |
| 0877639000… | 1,000 | = | NETERA PTY LTD | 24/10/2025 | — |
| 0877680000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/08/2026 | — |
| 0887070000… | 3,000 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 14/07/1999 | 24/03/2026 |
| 0887076000… | 3,000 | IPTEL PTY LIMITED | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 30/03/2000 | 01/12/2004 |
| 0887079000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 12/11/2004 | 26/07/2013 |
| 0887139000… | 1,000 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 30/11/2000 | 24/03/2026 |
| 0887147000… | 1,000 | ENGIN PTY LIMITED | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 24/12/2004 | 11/08/2015 |
| 0887210000… | 4,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0887218000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0887220000… | 1,000 | ADAM INTERNET PTY LTD | CHIME COMMUNICATIONS PTY LTD | 09/12/2004 | 28/02/2015 |
| 0887230000… | 40,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0887280000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 24/05/2005 | — |
| 0887324000… | 1,000 | = | AGILE PTY LTD | 01/06/2005 | 22/11/2011 |
| 0887351000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0887418000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 14/06/2005 | — |
| 0887476000… | 1,000 | = | NETERA PTY LTD | 24/10/2025 | — |
| 0887637000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 12/08/2005 | — |
| 0887738000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 27/04/2007 | — |
| 0887740000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 25/10/2007 | 06/08/2013 |
| 0887777000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 09/09/2009 | — |
| 0887781000… | 1,000 | = | AGILE PTY LTD | 18/01/2010 | — |
| 0887782000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 28/07/2011 | — |
| 0887785000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 03/02/2012 | — |
| 0887836000… | 1,000 | IVOX PTY LTD | SYMBIO NETWORKS PTY LTD | 18/06/2012 | 13/06/2014 |
| 0887928000… | 1,000 | = | CHIME COMMUNICATIONS PTY LTD | 14/07/2004 | — |
| 0887978000… | 2,000 | = | OPTUS MOBILE PTY LIMITED | 04/10/2007 | — |
| 0887994000… | 1,000 | VOCUS PTY LTD | OPTUS NETWORKS PTY LIMITED | 20/06/2008 | — |
Numbering areas next to Mount Gambier in the register
Immediately below and above Mount Gambier's blocks in the 0887… and 0877… prefixes sit Wirrega, Coonawarra, Greenways, Kalangadoo, Kongorong, Millicent, Penola, Port Macdonnell, Rendelsham, Short, Tantanoola and Tarpeena.
| Numbering area | First block | Blocks | Carriers |
|---|---|---|---|
| Wirrega | 0877013000… | 31 | 20 |
| Coonawarra | 0877014000… | 29 | 19 |
| Greenways | 0877015000… | 29 | 19 |
| Kalangadoo | 0877016000… | 29 | 19 |
| Kongorong | 0877017000… | 30 | 19 |
| Millicent | 0877018000… | 33 | 19 |
| Penola | 0877020000… | 30 | 20 |
| Port Macdonnell | 0877021000… | 31 | 20 |
| Rendelsham | 0877022000… | 32 | 20 |
| Short | 0877023000… | 30 | 20 |
| Tantanoola | 0877024000… | 32 | 20 |
| Tarpeena | 0877025000… | 31 | 20 |
Had a call from a Mount Gambier 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 Gambier numbers: questions and answers
Where is the Mount Gambier numbering area?
Mount Gambier is in South Australia, in the Mount Gambier council area. The nearest other numbering areas are Tarpeena (20 km), Kongorong (23 km) and Port Macdonnell (25 km).
What area code does Mount Gambier use?
Mount Gambier numbers use area code 08. Its register blocks start with 08 87 and 08 77. From overseas, drop the 0 and dial +61 8 followed by the eight-digit local number.
What time zone is Mount Gambier in?
Mount Gambier 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 Gambier phone numbers?
The ACMA register lists 19 carriers with allocated blocks in Mount Gambier. By allocated numbers the largest are Telstra (53.3%), Symbio Networks (8.4%) and Optus Networks (7.5%). A number can since have been ported to another provider.
When were Mount Gambier numbers first allocated?
The oldest block on record for Mount Gambier 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 Gambier 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 Gambier
Scammers spoof local landline numbers to look nearby. Guides: Australian area codes, how caller ID spoofing works.