Dandenong: landline numbers and carriers
Dandenong is one of the town-level numbering areas the ACMA register uses under area code 03 (VIC & TAS). The register lists 116 number blocks for it with about 1.1m allocated numbers, held by 22 carriers and spread over the 0387…, 0389…, 0397…, 0392…, 0394…, 0395… and 0399… dialling prefixes. That makes Dandenong the 3rd largest of 475 numbering areas under 03 by block count, with 3.08% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Dandenong 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 Dandenong is
- State or territory
- Victoria
- Council area
- Greater Dandenong
- Local time
- — AEST, UTC+10; AEDT, UTC+11 in summer
- Number format
- 03 87xx xxxx; from overseas +61 3 87xx xxxx
- Nearest numbering areas
- Clayton (11 km), Cranbourne (15 km), Ringwood (20 km), Emerald (VIC) (22 km), Croydon (22 km)
Locality, council and state: ABS ASGS Edition 3 (CC BY 4.0). Distances are straight-line between localities.
How Dandenong was numbered
The oldest block in Dandenong was allocated on 30 June 1991 and is held today by TELSTRA LIMITED; the newest on 1 October 2026 to TWILIO AUSTRALIA PTY LTD. Most of the area's blocks — 22 of 116 — date from 2015–2019, but allocations here span 35 years. 30 of the blocks are the standard 1,000-number size, and 45 are 10,000 numbers or larger. 26 allocated blocks have changed hands since they were first issued: the register still names AAPT LIMITED, ENGIN PTY LIMITED, GOTALK LIMITED, HUTCHISON TELECOMMUNICATIONS (AUSTRALIA) LIMITED, IPTEL PTY LIMITED, IVOX PTY LTD, POWERTEL LIMITED and RSL COM AUSTRALIA PTY LIMITED as original allocatees of blocks now held by other carriers.
| Period | Blocks allocated |
|---|---|
| 1990–1994 | 13 |
| 1995–1999 | 15 |
| 2000–2004 | 17 |
| 2005–2009 | 14 |
| 2010–2014 | 12 |
| 2015–2019 | 22 |
| 2020–2024 | 15 |
| 2025–2029 | 8 |
The carriers in Dandenong
TELSTRA LIMITED holds the largest share here with 60.6% of allocated numbers across 38 blocks; OPTUS NETWORKS PTY LIMITED is second with 16.5%, and 20 other carriers hold the rest. TELSTRA LIMITED has the longest tenure, with a block dated 30/06/1991; TWILIO AUSTRALIA PTY LTD received the newest, on 01/10/2026. OPTUS NETWORKS PTY LIMITED (9), SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1) and SYMBIO NETWORKS PTY LTD (6) hold blocks originally allocated to another carrier.
| Carrier | Blocks | Numbers | Share | First block | Latest block |
|---|---|---|---|---|---|
| TELSTRA LIMITED | 38 | 641,000 | 60.6% | 30/06/1991 | 29/11/2019 |
| OPTUS NETWORKS PTY LIMITED | 21 | 175,000 | 16.5% | 02/07/1992 | 14/08/2020 |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 7 | 47,000 | 4.4% | 30/03/2000 | 17/09/2019 |
| SYMBIO NETWORKS PTY LTD | 14 | 36,000 | 3.4% | 26/02/1999 | 19/08/2026 |
| PIPE NETWORKS PTY LIMITED | 4 | 29,800 | 2.8% | 14/07/1999 | 02/11/2023 |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 6 | 28,000 | 2.6% | 28/10/2002 | 27/07/2022 |
| OPTUS MOBILE PTY LIMITED | 4 | 22,000 | 2.1% | 30/05/2007 | 10/04/2008 |
| TPG TELECOM LIMITED | 2 | 20,000 | 1.9% | 24/08/1998 | 28/04/2000 |
| PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 1 | 20,000 | 1.9% | 03/07/2000 | 03/07/2000 |
| NETSIP PTY LTD | 6 | 12,000 | 1.1% | 14/02/2018 | 24/11/2025 |
| CHIME COMMUNICATIONS PTY LTD | 1 | 10,000 | 0.9% | 14/07/2004 | 14/07/2004 |
| TWILIO AUSTRALIA PTY LTD | 1 | 6,000 | 0.6% | 01/10/2026 | 01/10/2026 |
| VIRTUTEL PTY LTD | 2 | 2,000 | 0.2% | 18/03/2015 | 20/12/2015 |
| ADARGA PTY LTD | 1 | 1,000 | 0.1% | 16/09/2025 | 16/09/2025 |
| AGILE PTY LTD | 1 | 1,000 | 0.1% | 31/05/2005 | 31/05/2005 |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 0.1% | 13/07/2023 | 13/07/2023 |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 0.1% | 31/01/2022 | 31/01/2022 |
| LMGPS LTD | 1 | 1,000 | 0.1% | 23/11/2023 | 23/11/2023 |
| NETERA PTY LTD | 1 | 1,000 | 0.1% | 24/10/2025 | 24/10/2025 |
| PIVOTEL SATELLITE PTY LIMITED | 1 | 1,000 | 0.1% | 16/04/2025 | 16/04/2025 |
| THE TRUSTEE FOR READING FAMILY TRUST | 1 | 1,000 | 0.1% | 21/10/2019 | 21/10/2019 |
| WHY PAY MORE 4 LESS PTY LTD | 1 | 1,000 | 0.1% | 10/05/2018 | 10/05/2018 |
Number blocks registered for Dandenong
Every registered block for this area is allocated to a carrier. All 116 blocks, ascending:
| Block start | Numbers | Original allocatee | Current holder | Allocated | Transferred |
|---|---|---|---|---|---|
| 0387050000… | 10,000 | HUTCHISON TELECOMMUNICATIONS (AUSTRALIA) LIMITED | TPG TELECOM LIMITED | 24/08/1998 | 28/04/2017 |
| 0387070000… | 10,000 | SINGTEL OPTUS PTY LIMITED | OPTUS NETWORKS PTY LIMITED | 13/07/1999 | 10/02/2003 |
| 0387100000… | 10,000 | = | TELSTRA LIMITED | 17/02/2000 | — |
| 0387120000… | 10,000 | IPTEL PTY LIMITED | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 30/03/2000 | 01/12/2004 |
| 0387180000… | 10,000 | HUTCHISON TELECOMMUNICATIONS (AUSTRALIA) LIMITED | TPG TELECOM LIMITED | 28/04/2000 | 28/04/2017 |
| 0387250000… | 20,000 | POWERTEL LIMITED | PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 03/07/2000 | 24/03/2026 |
| 0387280000… | 10,000 | SINGTEL OPTUS PTY LIMITED | OPTUS NETWORKS PTY LIMITED | 14/02/2001 | 10/02/2003 |
| 0387380000… | 10,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 28/10/2002 | — |
| 0387402000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 12/11/2004 | 25/07/2013 |
| 0387409000… | 1,000 | ENGIN PTY LIMITED | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 24/12/2004 | 11/08/2015 |
| 0387430000… | 10,000 | = | CHIME COMMUNICATIONS PTY LTD | 14/07/2004 | — |
| 0387505000… | 6,000 | = | OPTUS NETWORKS PTY LIMITED | 14/08/2020 | — |
| 0387511000… | 1,000 | OPTUS NETWORKS PTY LIMITED | OPTUS MOBILE PTY LIMITED | 30/05/2007 | — |
| 0387512000… | 1,000 | VOCUS PTY LTD | OPTUS NETWORKS PTY LIMITED | 05/09/2008 | — |
| 0387513000… | 3,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 18/12/2009 | — |
| 0387516000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 01/02/2010 | 26/07/2013 |
| 0387517000… | 1,000 | VOXBONE | SYMBIO NETWORKS PTY LTD | 09/09/2010 | 21/02/2011 |
| 0387518000… | 1,000 | IVOX PTY LTD | SYMBIO NETWORKS PTY LTD | 18/06/2012 | 06/06/2014 |
| 0387519000… | 5,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 20/11/2012 | — |
| 0387524000… | 1,000 | VOCUS PTY LTD | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 11/02/2014 | 08/07/2016 |
| 0387526000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 24/04/2014 | — |
| 0387527000… | 3,000 | = | TELSTRA LIMITED | 11/12/2014 | — |
| 0387530000… | 10,000 | = | OPTUS MOBILE PTY LIMITED | 10/04/2008 | — |
| 0387580000… | 10,000 | = | OPTUS MOBILE PTY LIMITED | 11/01/2008 | — |
| 0387590000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 26/08/2009 | — |
| 0387600000… | 1,000 | = | VIRTUTEL PTY LTD | 18/03/2015 | — |
| 0387601000… | 1,000 | = | VIRTUTEL PTY LTD | 20/12/2015 | — |
| 0387606000… | 1,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 14/07/2016 | — |
| 0387620000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 26/11/2007 | — |
| 0387633000… | 5,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 03/02/2012 | — |
| 0387638000… | 2,000 | = | TELSTRA LIMITED | 16/06/2015 | — |
| 0387640000… | 1,000 | = | NETSIP PTY LTD | 14/02/2018 | — |
| 0387645000… | 5,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 09/11/2016 | — |
| 0387650000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 08/02/2011 | — |
| 0387660000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 16/10/2014 | — |
| 0387680000… | 30,000 | = | TELSTRA LIMITED | 17/02/2000 | — |
| 0387710000… | 4,000 | = | OPTUS NETWORKS PTY LIMITED | 14/08/2020 | — |
| 0387714000… | 1,000 | TWILIO AUSTRALIA PTY LTD | SYMBIO NETWORKS PTY LTD | 24/09/2020 | 15/10/2020 |
| 0387721000… | 1,000 | = | AGILE PTY LTD | 31/05/2005 | 21/09/2010 |
| 0387722000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 20/06/2005 | — |
| 0387725000… | 1,000 | = | OPTUS MOBILE PTY LIMITED | 06/09/2007 | — |
| 0387726000… | 4,000 | = | TELSTRA LIMITED | 15/11/2013 | — |
| 0387730000… | 10,000 | = | TELSTRA LIMITED | 17/02/2000 | — |
| 0387740000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 24/08/2006 | — |
| 0387790000… | 5,500 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 30/11/2000 | 24/03/2026 |
| 0387795700… | 4,300 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 30/11/2000 | 24/03/2026 |
| 0387800000… | 1,000 | = | ADARGA PTY LTD | 16/09/2025 | — |
| 0387803000… | 5,000 | = | TELSTRA LIMITED | 06/05/2016 | — |
| 0387808000… | 1,000 | = | TELSTRA LIMITED | 28/05/2007 | — |
| 0387810000… | 10,000 | = | TELSTRA LIMITED | 17/02/2000 | — |
| 0387820000… | 2,000 | = | TELSTRA LIMITED | 04/06/2009 | — |
| 0387822000… | 1,000 | = | THE TRUSTEE FOR READING FAMILY TRUST | 21/10/2019 | — |
| 0387823000… | 1,000 | = | TELSTRA LIMITED | 25/11/2009 | — |
| 0387827000… | 3,000 | = | TELSTRA LIMITED | 02/12/2016 | — |
| 0387830000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 03/02/2017 | — |
| 0387840000… | 5,000 | = | TELSTRA LIMITED | 10/02/2017 | — |
| 0387845000… | 3,000 | = | TELSTRA LIMITED | 30/09/2016 | — |
| 0387850000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 25/07/2012 | — |
| 0387860000… | 20,000 | = | TELSTRA LIMITED | 23/05/2003 | — |
| 0387880000… | 10,000 | = | TELSTRA LIMITED | 17/02/2000 | — |
| 0387890000… | 10,000 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 14/07/1999 | 24/03/2026 |
| 0387900000… | 10,000 | = | TELSTRA LIMITED | 30/04/1998 | — |
| 0387910000… | 10,000 | = | TELSTRA LIMITED | 22/10/1997 | — |
| 0387920000… | 10,000 | = | TELSTRA LIMITED | 29/09/1999 | — |
| 0387930000… | 20,000 | = | TELSTRA LIMITED | 17/02/2000 | — |
| 0387950000… | 10,000 | = | TELSTRA LIMITED | 25/08/1999 | — |
| 0387960000… | 10,000 | = | TELSTRA LIMITED | 22/10/1997 | — |
| 0387970000… | 8,000 | = | SYMBIO NETWORKS PTY LTD | 06/10/2020 | — |
| 0387978000… | 2,000 | RSL COM AUSTRALIA PTY LIMITED | SYMBIO NETWORKS PTY LTD | 26/02/1999 | 08/10/2009 |
| 0389000000… | 6,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 15/03/2017 | — |
| 0389006000… | 20,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 03/08/2017 | — |
| 0389026000… | 5,000 | = | TELSTRA LIMITED | 28/03/2018 | — |
| 0389031000… | 1,000 | = | WHY PAY MORE 4 LESS PTY LTD | 10/05/2018 | — |
| 0389032000… | 1,000 | = | NETSIP PTY LTD | 26/10/2021 | — |
| 0389033000… | 7,000 | = | TELSTRA LIMITED | 06/03/2019 | — |
| 0389040000… | 1,000 | = | CHECK TECHNOLOGY GROUP PTY LTD | 31/01/2022 | — |
| 0389041000… | 1,000 | = | NETSIP PTY LTD | 02/06/2022 | — |
| 0389042000… | 3,000 | = | OPTUS NETWORKS PTY LIMITED | 18/01/2019 | — |
| 0389045000… | 3,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 17/09/2019 | — |
| 0389048000… | 5,000 | = | SYMBIO NETWORKS PTY LTD | 14/11/2019 | — |
| 0389053000… | 2,000 | = | NETSIP PTY LTD | 02/06/2022 | — |
| 0389055000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 31/05/2019 | — |
| 0389065000… | 5,000 | = | TELSTRA LIMITED | 29/11/2019 | — |
| 0389070000… | 2,000 | = | NETSIP PTY LTD | 02/06/2022 | — |
| 0389072000… | 1,000 | = | C2A INTERNET.COM.AU PTY. LTD. | 13/07/2023 | — |
| 0389073000… | 1,000 | = | LMGPS LTD | 23/11/2023 | — |
| 0389074000… | 1,000 | = | PIVOTEL SATELLITE PTY LIMITED | 16/04/2025 | — |
| 0389075000… | 1,000 | = | NETERA PTY LTD | 24/10/2025 | — |
| 0389076000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/08/2026 | — |
| 0389078000… | 2,000 | = | SYMBIO NETWORKS PTY LTD | 19/06/2020 | — |
| 0389080000… | 5,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 27/07/2022 | — |
| 0389085000… | 5,000 | = | SYMBIO NETWORKS PTY LTD | 25/09/2023 | — |
| 0389090000… | 10,000 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 02/11/2023 | 24/03/2026 |
| 0389100000… | 5,000 | = | SYMBIO NETWORKS PTY LTD | 21/05/2025 | — |
| 0389105000… | 5,000 | = | NETSIP PTY LTD | 24/11/2025 | — |
| 0389110000… | 2,000 | = | SYMBIO NETWORKS PTY LTD | 29/01/2026 | — |
| 0389112000… | 6,000 | = | TWILIO AUSTRALIA PTY LTD | 01/10/2026 | — |
| 0392121000… | 5,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0392131000… | 5,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0392151000… | 5,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0392380000… | 10,000 | = | TELSTRA LIMITED | 25/05/1994 | — |
| 0392930000… | 10,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0394000000… | 10,000 | = | TELSTRA LIMITED | 07/04/1995 | — |
| 0395540000… | 10,000 | = | TELSTRA LIMITED | 09/12/1996 | — |
| 0397000000… | 100,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0397110000… | 10,000 | SINGTEL OPTUS PTY LIMITED | OPTUS NETWORKS PTY LIMITED | 22/05/1995 | 10/02/2003 |
| 0397130000… | 10,000 | SINGTEL OPTUS PTY LIMITED | OPTUS NETWORKS PTY LIMITED | 02/07/1992 | 10/02/2003 |
| 0397500000… | 10,000 | SINGTEL OPTUS PTY LIMITED | OPTUS NETWORKS PTY LIMITED | 22/05/1995 | 10/02/2003 |
| 0397660000… | 10,000 | SINGTEL OPTUS PTY LIMITED | OPTUS NETWORKS PTY LIMITED | 22/05/1995 | 10/02/2003 |
| 0397670000… | 40,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0397710000… | 10,000 | SINGTEL OPTUS PTY LIMITED | OPTUS NETWORKS PTY LIMITED | 02/07/1992 | 10/02/2003 |
| 0397720000… | 20,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0397740000… | 10,000 | SINGTEL OPTUS PTY LIMITED | OPTUS NETWORKS PTY LIMITED | 22/05/1995 | 10/02/2003 |
| 0397750000… | 20,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0397810000… | 190,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0399040000… | 10,000 | = | TELSTRA LIMITED | 13/09/1993 | — |
Numbering areas next to Dandenong in the register
Immediately below and above Dandenong's blocks in the 0387…, 0389…, 0397…, 0392…, 0394…, 0395… and 0399… prefixes sit Werribee, Sunbury, Kalkallo, Whittlesea, Croydon, Melbourne, Point Cook, Ringwood, Clayton, Eltham and Craigieburn.
| Numbering area | First block | Blocks | Carriers |
|---|---|---|---|
| Werribee | 0387000000… | 31 | 13 |
| Sunbury | 0387010000… | 25 | 13 |
| Kalkallo | 0387020000… | 19 | 13 |
| Whittlesea | 0387030000… | 21 | 13 |
| Croydon | 0387040000… | 37 | 10 |
| Melbourne | 0387089000… | 205 | 12 |
| Point Cook | 0387443500… | 4 | 3 |
| Ringwood | 0392100000… | 9 | 2 |
| Clayton | 0392117000… | 35 | 2 |
| Eltham | 0392170000… | 20 | 7 |
| Craigieburn | 0392173000… | 6 | 2 |
Had a call from a Dandenong 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.
Dandenong numbers: questions and answers
Where is the Dandenong numbering area?
Dandenong is in Victoria, in the Greater Dandenong council area. The nearest other numbering areas are Clayton (11 km), Cranbourne (15 km) and Ringwood (20 km).
What area code does Dandenong use?
Dandenong numbers use area code 03. Its register blocks start with 03 87, 03 89, 03 97, 03 92, 03 94, 03 95 and 03 99. From overseas, drop the 0 and dial +61 3 followed by the eight-digit local number.
What time zone is Dandenong in?
Dandenong 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 Dandenong phone numbers?
The ACMA register lists 22 carriers with allocated blocks in Dandenong. By allocated numbers the largest are Telstra (60.6%), Optus Networks (16.5%) and Soul Pattinson Telecommunications (4.4%). A number can since have been ported to another provider.
When were Dandenong numbers first allocated?
The oldest block on record for Dandenong was allocated on 30 June 1991 and is held by Telstra; the newest on 1 October 2026, to Twilio Australia.
How do I report a scam call from a Dandenong 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 Dandenong
Scammers spoof local landline numbers to look nearby. Guides: Australian area codes, how caller ID spoofing works.