Underbool: landline numbers and carriers
Underbool 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 38,000 allocated numbers, held by 20 carriers and spread over the 0340… and 0350… dialling prefixes. That makes Underbool the 91st largest of 475 numbering areas under 03 by block count, with 0.11% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Underbool 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 Underbool is
- State or territory
- Victoria
- Council area
- Mildura
- Local time
- — AEST, UTC+10; AEDT, UTC+11 in summer
- Number format
- 03 40xx xxxx; from overseas +61 3 40xx xxxx
- Nearest numbering areas
- Cowangie (42 km), Patchewollock (44 km), Ouyen (46 km), Murrayville (56 km), Tempy (59 km)
Locality, council and state: ABS ASGS Edition 3 (CC BY 4.0). Distances are straight-line between localities.
How Underbool was numbered
The oldest block in Underbool 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. 28 of the blocks are the standard 1,000-number size. 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.
| Period | Blocks allocated |
|---|---|
| 1990–1994 | 3 |
| 2000–2004 | 3 |
| 2005–2009 | 5 |
| 2010–2014 | 4 |
| 2015–2019 | 7 |
| 2020–2024 | 6 |
| 2025–2029 | 4 |
The carriers in Underbool
Underbool is spread across carriers: SYMBIO NETWORKS PTY LTD leads with 15.8% of allocated numbers ahead of TELSTRA LIMITED on 15.8%, 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), SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1) and PRIMUS TELECOMMUNICATIONS PTY LIMITED (1) hold blocks originally allocated to another carrier.
| Carrier | Blocks | Numbers | Share | First block | Latest block |
|---|---|---|---|---|---|
| SYMBIO NETWORKS PTY LTD | 6 | 6,000 | 15.8% | 09/01/2006 | 19/08/2026 |
| TELSTRA LIMITED | 3 | 6,000 | 15.8% | 30/06/1991 | 30/06/1991 |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 4,000 | 10.5% | 30/03/2000 | 14/07/2016 |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 3 | 3,000 | 7.9% | 24/12/2004 | 03/02/2012 |
| NETSIP PTY LTD | 2 | 2,000 | 5.3% | 14/02/2018 | 26/10/2021 |
| OPTUS NETWORKS PTY LIMITED | 2 | 2,000 | 5.3% | 08/06/2005 | 28/11/2019 |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 5.3% | 10/10/2007 | 10/10/2007 |
| ADARGA PTY LTD | 1 | 1,000 | 2.6% | 16/09/2025 | 16/09/2025 |
| AGILE PTY LTD | 1 | 1,000 | 2.6% | 02/04/2007 | 02/04/2007 |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 2.6% | 13/07/2023 | 13/07/2023 |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 2.6% | 31/01/2022 | 31/01/2022 |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 2.6% | 14/07/2004 | 14/07/2004 |
| GENNEXT ENTERPRISES PTY LTD | 1 | 1,000 | 2.6% | 03/10/2019 | 03/10/2019 |
| LMGPS LTD | 1 | 1,000 | 2.6% | 23/11/2023 | 23/11/2023 |
| NETERA PTY LTD | 1 | 1,000 | 2.6% | 24/10/2025 | 24/10/2025 |
| PIPE NETWORKS PTY LIMITED | 1 | 1,000 | 2.6% | 03/09/2012 | 03/09/2012 |
| PIVOTEL SATELLITE PTY LIMITED | 1 | 1,000 | 2.6% | 16/04/2025 | 16/04/2025 |
| THE TRUSTEE FOR READING FAMILY TRUST | 1 | 1,000 | 2.6% | 21/10/2019 | 21/10/2019 |
| VIRTUTEL PTY LTD | 1 | 1,000 | 2.6% | 20/12/2015 | 20/12/2015 |
| WHY PAY MORE 4 LESS PTY LTD | 1 | 1,000 | 2.6% | 10/05/2018 | 10/05/2018 |
Number blocks registered for Underbool
Every registered block for this area is allocated to a carrier. All 32 blocks, ascending:
| Block start | Numbers | Original allocatee | Current holder | Allocated | Transferred |
|---|---|---|---|---|---|
| 0340027000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 09/01/2006 | 06/08/2013 |
| 0340069000… | 1,000 | = | AGILE PTY LTD | 02/04/2007 | 22/11/2011 |
| 0340128000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 03/02/2012 | — |
| 0340184000… | 1,000 | IVOX PTY LTD | SYMBIO NETWORKS PTY LTD | 18/06/2012 | 16/06/2014 |
| 0340236000… | 1,000 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 03/09/2012 | 24/03/2026 |
| 0340278000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 24/04/2014 | — |
| 0340321000… | 1,000 | = | VIRTUTEL PTY LTD | 20/12/2015 | — |
| 0340364000… | 1,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 14/07/2016 | — |
| 0340411000… | 1,000 | = | NETSIP PTY LTD | 14/02/2018 | — |
| 0340454000… | 1,000 | = | LMGPS LTD | 23/11/2023 | — |
| 0340497000… | 1,000 | = | THE TRUSTEE FOR READING FAMILY TRUST | 21/10/2019 | — |
| 0340583000… | 1,000 | = | WHY PAY MORE 4 LESS PTY LTD | 10/05/2018 | — |
| 0340623000… | 1,000 | TWILIO AUSTRALIA PTY LTD | SYMBIO NETWORKS PTY LTD | 24/09/2020 | 15/10/2020 |
| 0340624000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/06/2020 | — |
| 0340669000… | 1,000 | = | GENNEXT ENTERPRISES PTY LTD | 03/10/2019 | — |
| 0340697000… | 1,000 | = | NETSIP PTY LTD | 26/10/2021 | — |
| 0340740000… | 1,000 | = | CHECK TECHNOLOGY GROUP PTY LTD | 31/01/2022 | — |
| 0340783000… | 1,000 | = | C2A INTERNET.COM.AU PTY. LTD. | 13/07/2023 | — |
| 0340826000… | 1,000 | = | PIVOTEL SATELLITE PTY LIMITED | 16/04/2025 | — |
| 0340869000… | 1,000 | = | ADARGA PTY LTD | 16/09/2025 | — |
| 0340912000… | 1,000 | = | NETERA PTY LTD | 24/10/2025 | — |
| 0340955000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/08/2026 | — |
| 0350150000… | 3,000 | IPTEL PTY LIMITED | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 30/03/2000 | 01/12/2004 |
| 0350175000… | 1,000 | ENGIN PTY LIMITED | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 24/12/2004 | 11/08/2015 |
| 0350470000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 27/05/2005 | — |
| 0350500000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 28/11/2019 | — |
| 0350560000… | 2,000 | = | OPTUS MOBILE PTY LIMITED | 10/10/2007 | — |
| 0350624000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 08/06/2005 | — |
| 0350678000… | 1,000 | = | CHIME COMMUNICATIONS PTY LTD | 14/07/2004 | — |
| 0350917000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0350940000… | 3,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0350945000… | 2,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
Numbering areas next to Underbool in the register
Immediately below and above Underbool's blocks in the 0340… and 0350… prefixes sit Turriff, Cowangie, Mittyack, Murrayville, Ouyen, Tempy, Annuello, Berriwillock, Culgoa (VIC), Cunninyeuk, Kyalite and Mallan.
| Numbering area | First block | Blocks | Carriers |
|---|---|---|---|
| Turriff | 0340021000… | 29 | 20 |
| Cowangie | 0340022000… | 28 | 19 |
| Mittyack | 0340023000… | 28 | 19 |
| Murrayville | 0340024000… | 28 | 19 |
| Ouyen | 0340025000… | 30 | 20 |
| Tempy | 0340026000… | 29 | 20 |
| Annuello | 0340028000… | 28 | 19 |
| Berriwillock | 0340029000… | 28 | 19 |
| Culgoa (VIC) | 0340030000… | 28 | 19 |
| Cunninyeuk | 0340031000… | 29 | 19 |
| Kyalite | 0340032000… | 28 | 19 |
| Mallan | 0340033000… | 29 | 19 |
Had a call from a Underbool 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 Victoria 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.
Underbool numbers: questions and answers
Where is the Underbool numbering area?
Underbool is in Victoria, in the Mildura council area. The nearest other numbering areas are Cowangie (42 km), Patchewollock (44 km) and Ouyen (46 km).
What area code does Underbool use?
Underbool numbers use area code 03. Its register blocks start with 03 40 and 03 50. From overseas, drop the 0 and dial +61 3 followed by the eight-digit local number.
What time zone is Underbool in?
Underbool 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 Underbool phone numbers?
The ACMA register lists 20 carriers with allocated blocks in Underbool. By allocated numbers the largest are Symbio Networks (15.8%), Telstra (15.8%) and Soul Pattinson Telecommunications (10.5%). A number can since have been ported to another provider.
When were Underbool numbers first allocated?
The oldest block on record for Underbool 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 Underbool 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 Underbool
Scammers spoof local landline numbers to look nearby. Guides: Australian area codes, how caller ID spoofing works.