Muswellbrook: landline numbers and carriers
Muswellbrook is one of the town-level numbering areas the ACMA register uses under area code 02 (NSW & ACT). The register lists 38 number blocks for it with about 77,000 allocated numbers, held by 21 carriers and spread over the 0255…, 0265… and 0235… dialling prefixes. That makes Muswellbrook the 48th largest of 576 numbering areas under 02 by block count, with 0.18% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Muswellbrook 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 Muswellbrook is
- State or territory
- New South Wales
- Council area
- Muswellbrook
- Local time
- — AEST, UTC+10; AEDT, UTC+11 in summer
- Number format
- 02 55xx xxxx; from overseas +61 2 55xx xxxx
- Nearest numbering areas
- Castle Rock (15 km), Jerrys Plains (20 km), Ravensworth (20 km), Denman (20 km), Scone (28 km)
Locality, council and state: ABS ASGS Edition 3 (CC BY 4.0). Distances are straight-line between localities.
How Muswellbrook was numbered
The oldest block in Muswellbrook 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 38 — date from 2005–2009, but allocations here span 35 years. 33 of the blocks are the standard 1,000-number size, 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, ENGIN PTY LIMITED, GOTALK LIMITED, IPTEL PTY LIMITED, IVOX PTY LTD, POWERTEL LIMITED, RSL COM AUSTRALIA PTY LIMITED and TWILIO AUSTRALIA PTY LTD as original allocatees of blocks now held by other carriers.
| Period | Blocks allocated |
|---|---|
| 1990–1994 | 4 |
| 1995–1999 | 1 |
| 2000–2004 | 3 |
| 2005–2009 | 8 |
| 2010–2014 | 3 |
| 2015–2019 | 8 |
| 2020–2024 | 7 |
| 2025–2029 | 4 |
The carriers in Muswellbrook
TELSTRA LIMITED holds the largest share here with 54.5% of allocated numbers across 6 blocks; SYMBIO NETWORKS PTY LTD is second with 9.1%, and 19 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), PRIMUS TELECOMMUNICATIONS PTY LIMITED (1) and SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1) hold blocks originally allocated to another carrier.
| Carrier | Blocks | Numbers | Share | First block | Latest block |
|---|---|---|---|---|---|
| TELSTRA LIMITED | 6 | 42,000 | 54.5% | 30/06/1991 | 18/01/2012 |
| SYMBIO NETWORKS PTY LTD | 7 | 7,000 | 9.1% | 23/06/2005 | 19/08/2026 |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 4 | 4,000 | 5.2% | 24/12/2004 | 15/03/2017 |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 4,000 | 5.2% | 30/03/2000 | 14/07/2016 |
| NETSIP PTY LTD | 2 | 2,000 | 2.6% | 14/02/2018 | 26/10/2021 |
| OPTUS NETWORKS PTY LIMITED | 2 | 2,000 | 2.6% | 27/07/2005 | 24/04/2007 |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 2.6% | 26/10/2007 | 26/10/2007 |
| ADARGA PTY LTD | 1 | 1,000 | 1.3% | 16/09/2025 | 16/09/2025 |
| AGILE PTY LTD | 1 | 1,000 | 1.3% | 03/04/2007 | 03/04/2007 |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 1.3% | 13/07/2023 | 13/07/2023 |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 1.3% | 31/01/2022 | 31/01/2022 |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 1.3% | 14/07/2004 | 14/07/2004 |
| GENNEXT ENTERPRISES PTY LTD | 1 | 1,000 | 1.3% | 03/10/2019 | 03/10/2019 |
| LMGPS LTD | 1 | 1,000 | 1.3% | 23/11/2023 | 23/11/2023 |
| NETERA PTY LTD | 1 | 1,000 | 1.3% | 24/10/2025 | 24/10/2025 |
| PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 1 | 1,000 | 1.3% | 25/07/2007 | 25/07/2007 |
| PIPE NETWORKS PTY LIMITED | 1 | 1,000 | 1.3% | 18/03/2019 | 18/03/2019 |
| PIVOTEL SATELLITE PTY LIMITED | 1 | 1,000 | 1.3% | 16/04/2025 | 16/04/2025 |
| THE TRUSTEE FOR READING FAMILY TRUST | 1 | 1,000 | 1.3% | 21/10/2019 | 21/10/2019 |
| VIRTUTEL PTY LTD | 1 | 1,000 | 1.3% | 20/12/2015 | 20/12/2015 |
| WHY PAY MORE 4 LESS PTY LTD | 1 | 1,000 | 1.3% | 10/05/2018 | 10/05/2018 |
Number blocks registered for Muswellbrook
Every registered block for this area is allocated to a carrier. All 38 blocks, ascending:
| Block start | Numbers | Original allocatee | Current holder | Allocated | Transferred |
|---|---|---|---|---|---|
| 0235028000… | 1,000 | = | NETERA PTY LTD | 24/10/2025 | — |
| 0235072000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/08/2026 | — |
| 0255042000… | 1,000 | POWERTEL LIMITED | PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 25/07/2007 | 24/03/2026 |
| 0255064000… | 1,000 | = | AGILE PTY LTD | 03/04/2007 | 03/09/2012 |
| 0255131000… | 2,000 | = | OPTUS MOBILE PTY LIMITED | 26/10/2007 | — |
| 0255171000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 03/02/2012 | — |
| 0255224000… | 1,000 | IVOX PTY LTD | SYMBIO NETWORKS PTY LTD | 18/06/2012 | 23/06/2014 |
| 0255319000… | 1,000 | = | VIRTUTEL PTY LTD | 20/12/2015 | — |
| 0255376000… | 1,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 14/07/2016 | — |
| 0255420000… | 1,000 | = | NETSIP PTY LTD | 14/02/2018 | — |
| 0255442000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 15/03/2017 | — |
| 0255516000… | 1,000 | RSL COM AUSTRALIA PTY LIMITED | SYMBIO NETWORKS PTY LTD | 16/01/2007 | 01/10/2009 |
| 0255575000… | 1,000 | = | THE TRUSTEE FOR READING FAMILY TRUST | 21/10/2019 | — |
| 0255603000… | 1,000 | = | LMGPS LTD | 23/11/2023 | — |
| 0255634000… | 1,000 | TWILIO AUSTRALIA PTY LTD | SYMBIO NETWORKS PTY LTD | 24/09/2020 | 15/10/2020 |
| 0255637000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/06/2020 | — |
| 0255691000… | 1,000 | = | WHY PAY MORE 4 LESS PTY LTD | 10/05/2018 | — |
| 0255727000… | 1,000 | = | NETSIP PTY LTD | 26/10/2021 | — |
| 0255754000… | 1,000 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 18/03/2019 | 24/03/2026 |
| 0255793000… | 1,000 | = | GENNEXT ENTERPRISES PTY LTD | 03/10/2019 | — |
| 0255809000… | 1,000 | = | CHECK TECHNOLOGY GROUP PTY LTD | 31/01/2022 | — |
| 0255854000… | 1,000 | = | C2A INTERNET.COM.AU PTY. LTD. | 13/07/2023 | — |
| 0255913000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 24/04/2007 | — |
| 0255945000… | 1,000 | = | TELSTRA LIMITED | 18/01/2012 | — |
| 0255958000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 29/04/2022 | — |
| 0255965000… | 1,000 | = | PIVOTEL SATELLITE PTY LIMITED | 16/04/2025 | — |
| 0265103000… | 3,000 | IPTEL PTY LIMITED | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 30/03/2000 | 01/12/2004 |
| 0265109000… | 1,000 | = | ADARGA PTY LTD | 16/09/2025 | — |
| 0265170000… | 1,000 | ENGIN PTY LIMITED | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 24/12/2004 | 11/08/2015 |
| 0265262000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 25/05/2005 | — |
| 0265307000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 27/07/2005 | — |
| 0265352000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 23/06/2005 | 16/07/2013 |
| 0265400000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0265408000… | 32,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0265445000… | 5,000 | = | TELSTRA LIMITED | 18/06/1998 | — |
| 0265490000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0265492000… | 2,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0265965000… | 1,000 | = | CHIME COMMUNICATIONS PTY LTD | 14/07/2004 | — |
Numbering areas next to Muswellbrook in the register
Immediately below and above Muswellbrook's blocks in the 0255…, 0265… and 0235… prefixes sit Macksville, Merriwa, Moonan Flat, Mount George (NSW), Mount Olive, Murrurundi, Pacific Palms, Port Macquarie, Putty, Ravensworth, Rawdon Vale and Rookhurst.
| Numbering area | First block | Blocks | Carriers |
|---|---|---|---|
| Macksville | 0235022000… | 38 | 20 |
| Merriwa | 0235023000… | 31 | 18 |
| Moonan Flat | 0235024000… | 29 | 18 |
| Mount George (NSW) | 0235025000… | 29 | 18 |
| Mount Olive | 0235026000… | 29 | 18 |
| Murrurundi | 0235027000… | 29 | 18 |
| Pacific Palms | 0235029000… | 35 | 20 |
| Port Macquarie | 0235030000… | 61 | 20 |
| Putty | 0235031000… | 28 | 19 |
| Ravensworth | 0235032000… | 32 | 19 |
| Rawdon Vale | 0235033000… | 32 | 19 |
| Rookhurst | 0235034000… | 30 | 19 |
Had a call from a Muswellbrook 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 the NSW Police Force. 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.
Muswellbrook numbers: questions and answers
Where is the Muswellbrook numbering area?
Muswellbrook is in New South Wales, in the Muswellbrook council area. The nearest other numbering areas are Castle Rock (15 km), Jerrys Plains (20 km) and Ravensworth (20 km).
What area code does Muswellbrook use?
Muswellbrook numbers use area code 02. Its register blocks start with 02 55, 02 65 and 02 35. From overseas, drop the 0 and dial +61 2 followed by the eight-digit local number.
What time zone is Muswellbrook in?
Muswellbrook 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 Muswellbrook phone numbers?
The ACMA register lists 21 carriers with allocated blocks in Muswellbrook. By allocated numbers the largest are Telstra (54.5%), Symbio Networks (9.1%) and Primus Telecommunications (5.2%). A number can since have been ported to another provider.
When were Muswellbrook numbers first allocated?
The oldest block on record for Muswellbrook 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 Muswellbrook number?
Report it to Scamwatch. If you lost money, call your bank first, then report it through ReportCyber, which passes it to the NSW Police Force. Unwanted sales calls go to the Do Not Call Register's complaint form (1300 792 958).
Check a number from Muswellbrook
Scammers spoof local landline numbers to look nearby. Guides: Australian area codes, how caller ID spoofing works.