Craigieburn: landline numbers and carriers
Craigieburn is one of the town-level numbering areas the ACMA register uses under area code 03 (VIC & TAS). The register lists 61 number blocks for it with about 255,000 allocated numbers, held by 22 carriers and spread over the 0383…, 0373…, 0393…, 0392… and 0399… dialling prefixes. That makes Craigieburn the 14th largest of 475 numbering areas under 03 by block count, with 0.74% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Craigieburn 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 Craigieburn is
- State or territory
- Victoria
- Council area
- Hume
- Local time
- — AEST, UTC+10; AEDT, UTC+11 in summer
- Number format
- 03 83xx xxxx; from overseas +61 3 83xx xxxx
- Nearest numbering areas
- Kalkallo (7 km), Sunbury (19 km), Sydenham (19 km), Whittlesea (21 km), Eltham (25 km)
Locality, council and state: ABS ASGS Edition 3 (CC BY 4.0). Distances are straight-line between localities.
How Craigieburn was numbered
The oldest block in Craigieburn 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 — 14 of 61 — date from 2005–2009, but allocations here span 35 years. 35 of the blocks are the standard 1,000-number size, and 17 are 10,000 numbers or larger. 13 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 | 10 |
| 1995–1999 | 3 |
| 2000–2004 | 6 |
| 2005–2009 | 14 |
| 2010–2014 | 5 |
| 2015–2019 | 9 |
| 2020–2024 | 7 |
| 2025–2029 | 7 |
The carriers in Craigieburn
Craigieburn is spread across carriers: TELSTRA LIMITED leads with 31% of allocated numbers ahead of OPTUS NETWORKS PTY LIMITED on 20.4%, and 22 carriers hold blocks in total. 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 (1), SYMBIO NETWORKS PTY LTD (5) and OPTUS MOBILE PTY LIMITED (1) hold blocks originally allocated to another carrier.
| Carrier | Blocks | Numbers | Share | First block | Latest block |
|---|---|---|---|---|---|
| TELSTRA LIMITED | 16 | 79,000 | 31% | 30/06/1991 | 01/10/2019 |
| OPTUS NETWORKS PTY LIMITED | 6 | 52,000 | 20.4% | 02/07/1992 | 24/08/2006 |
| SYMBIO NETWORKS PTY LTD | 10 | 23,000 | 9% | 24/06/2005 | 19/08/2026 |
| OPTUS MOBILE PTY LIMITED | 4 | 22,000 | 8.6% | 30/05/2007 | 10/04/2008 |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 4 | 13,000 | 5.1% | 16/12/2002 | 11/02/2014 |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 11,000 | 4.3% | 30/03/2000 | 14/07/2016 |
| CHIME COMMUNICATIONS PTY LTD | 1 | 10,000 | 3.9% | 14/07/2004 | 14/07/2004 |
| PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 1 | 10,000 | 3.9% | 25/09/2001 | 25/09/2001 |
| PIPE NETWORKS PTY LIMITED | 1 | 10,000 | 3.9% | 14/07/1999 | 14/07/1999 |
| TPG TELECOM LIMITED | 1 | 10,000 | 3.9% | 24/12/1998 | 24/12/1998 |
| NETSIP PTY LTD | 3 | 3,000 | 1.2% | 14/02/2018 | 10/07/2026 |
| VIRTUTEL PTY LTD | 2 | 2,000 | 0.8% | 18/03/2015 | 20/12/2015 |
| ADARGA PTY LTD | 1 | 1,000 | 0.4% | 16/09/2025 | 16/09/2025 |
| AGILE PTY LTD | 1 | 1,000 | 0.4% | 31/05/2005 | 31/05/2005 |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 1,000 | 0.4% | 13/07/2023 | 13/07/2023 |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 1,000 | 0.4% | 31/01/2022 | 31/01/2022 |
| LMGPS LTD | 1 | 1,000 | 0.4% | 23/11/2023 | 23/11/2023 |
| NETERA PTY LTD | 1 | 1,000 | 0.4% | 24/10/2025 | 24/10/2025 |
| PIVOTEL SATELLITE PTY LIMITED | 1 | 1,000 | 0.4% | 16/04/2025 | 16/04/2025 |
| THE TRUSTEE FOR READING FAMILY TRUST | 1 | 1,000 | 0.4% | 21/10/2019 | 21/10/2019 |
| TWILIO AUSTRALIA PTY LTD | 1 | 1,000 | 0.4% | 01/10/2026 | 01/10/2026 |
| WHY PAY MORE 4 LESS PTY LTD | 1 | 1,000 | 0.4% | 10/05/2018 | 10/05/2018 |
Number blocks registered for Craigieburn
Every registered block for this area is allocated to a carrier. All 61 blocks, ascending:
| Block start | Numbers | Original allocatee | Current holder | Allocated | Transferred |
|---|---|---|---|---|---|
| 0373000000… | 1,000 | = | VIRTUTEL PTY LTD | 20/12/2015 | — |
| 0373003000… | 1,000 | = | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 14/07/2016 | — |
| 0373006000… | 1,000 | = | NETSIP PTY LTD | 14/02/2018 | — |
| 0373009000… | 1,000 | = | ADARGA PTY LTD | 16/09/2025 | — |
| 0373012000… | 1,000 | = | THE TRUSTEE FOR READING FAMILY TRUST | 21/10/2019 | — |
| 0373020000… | 1,000 | = | NETSIP PTY LTD | 26/10/2021 | — |
| 0373021000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/06/2020 | — |
| 0373022000… | 1,000 | TWILIO AUSTRALIA PTY LTD | SYMBIO NETWORKS PTY LTD | 24/09/2020 | 15/10/2020 |
| 0373023000… | 1,000 | = | WHY PAY MORE 4 LESS PTY LTD | 10/05/2018 | — |
| 0373030000… | 3,000 | = | TELSTRA LIMITED | 01/02/2019 | — |
| 0373038000… | 1,000 | = | CHECK TECHNOLOGY GROUP PTY LTD | 31/01/2022 | — |
| 0373042000… | 1,000 | = | C2A INTERNET.COM.AU PTY. LTD. | 13/07/2023 | — |
| 0373051000… | 10,000 | = | SYMBIO NETWORKS PTY LTD | 25/09/2023 | — |
| 0373061000… | 1,000 | = | LMGPS LTD | 23/11/2023 | — |
| 0373064000… | 1,000 | = | PIVOTEL SATELLITE PTY LIMITED | 16/04/2025 | — |
| 0373067000… | 1,000 | = | NETERA PTY LTD | 24/10/2025 | — |
| 0373070000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 19/08/2026 | — |
| 0373773000… | 3,000 | = | TELSTRA LIMITED | 01/10/2019 | — |
| 0373794000… | 3,000 | = | TELSTRA LIMITED | 29/06/2015 | — |
| 0373800000… | 5,000 | = | SYMBIO NETWORKS PTY LTD | 21/05/2025 | — |
| 0373805000… | 1,000 | = | TWILIO AUSTRALIA PTY LTD | 01/10/2026 | — |
| 0383050000… | 10,000 | HUTCHISON TELECOMMUNICATIONS (AUSTRALIA) LIMITED | TPG TELECOM LIMITED | 24/12/1998 | 28/04/2017 |
| 0383130000… | 10,000 | IPTEL PTY LIMITED | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 30/03/2000 | 01/12/2004 |
| 0383140000… | 10,000 | AAPT LIMITED | PIPE NETWORKS PTY LIMITED | 14/07/1999 | 24/03/2026 |
| 0383240000… | 10,000 | POWERTEL LIMITED | PIPE INTERNATIONAL (AUSTRALIA) PTY LTD | 25/09/2001 | 24/03/2026 |
| 0383330000… | 10,000 | = | CHIME COMMUNICATIONS PTY LTD | 14/07/2004 | — |
| 0383380000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 27/07/2005 | — |
| 0383383000… | 1,000 | = | TELSTRA LIMITED | 10/05/2005 | — |
| 0383385000… | 1,000 | OPTUS NETWORKS PTY LIMITED | OPTUS MOBILE PTY LIMITED | 30/05/2007 | — |
| 0383390000… | 10,000 | = | TELSTRA LIMITED | 07/10/2004 | — |
| 0383480000… | 1,000 | GOTALK LIMITED | SYMBIO NETWORKS PTY LTD | 24/06/2005 | 25/07/2013 |
| 0383490000… | 10,000 | = | OPTUS MOBILE PTY LIMITED | 10/04/2008 | — |
| 0383512000… | 1,000 | ENGIN PTY LIMITED | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 24/12/2004 | 11/08/2015 |
| 0383518000… | 1,000 | = | AGILE PTY LTD | 31/05/2005 | 08/02/2011 |
| 0383519000… | 1,000 | = | OPTUS NETWORKS PTY LIMITED | 20/06/2005 | — |
| 0383550000… | 10,000 | = | OPTUS MOBILE PTY LIMITED | 11/01/2008 | — |
| 0383586000… | 4,000 | = | TELSTRA LIMITED | 12/03/2009 | — |
| 0383620000… | 1,000 | = | OPTUS MOBILE PTY LIMITED | 06/09/2007 | — |
| 0383621000… | 1,000 | VOXBONE | SYMBIO NETWORKS PTY LTD | 09/09/2010 | 21/02/2011 |
| 0383627000… | 1,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 03/02/2012 | — |
| 0383629000… | 1,000 | = | SYMBIO NETWORKS PTY LTD | 24/04/2014 | — |
| 0383640000… | 20,000 | = | OPTUS NETWORKS PTY LIMITED | 08/11/2005 | — |
| 0383723000… | 1,000 | IVOX PTY LTD | SYMBIO NETWORKS PTY LTD | 18/06/2012 | 16/06/2014 |
| 0383742000… | 1,000 | VOCUS PTY LTD | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 11/02/2014 | 08/07/2016 |
| 0383749000… | 1,000 | = | VIRTUTEL PTY LTD | 18/03/2015 | — |
| 0383754000… | 1,000 | = | NETSIP PTY LTD | 10/07/2026 | — |
| 0383770000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 25/02/2005 | — |
| 0383840000… | 10,000 | = | PRIMUS TELECOMMUNICATIONS PTY LIMITED | 16/12/2002 | — |
| 0383890000… | 10,000 | = | OPTUS NETWORKS PTY LIMITED | 24/08/2006 | — |
| 0392173000… | 2,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0392190000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0392192000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0392195000… | 2,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0393030000… | 10,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0393050000… | 8,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0393059000… | 1,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0393080000… | 10,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0393230000… | 10,000 | SINGTEL OPTUS PTY LIMITED | OPTUS NETWORKS PTY LIMITED | 02/07/1992 | 10/02/2003 |
| 0393330000… | 10,000 | = | TELSTRA LIMITED | 30/06/1991 | — |
| 0399300000… | 10,000 | = | TELSTRA LIMITED | 04/09/1996 | — |
| 0399941000… | 1,000 | RSL COM AUSTRALIA PTY LIMITED | SYMBIO NETWORKS PTY LTD | 18/01/2007 | 06/10/2009 |
Numbering areas next to Craigieburn in the register
Immediately above Craigieburn's blocks in the 0383…, 0373…, 0393…, 0392… and 0399… prefixes sit Point Cook, Sydenham, Melbourne, Werribee, Ringwood and Clayton.
| Numbering area | First block | Blocks | Carriers |
|---|---|---|---|
| Point Cook | 0373001000… | 51 | 23 |
| Sydenham | 0373002000… | 62 | 22 |
| Melbourne | 0383000000… | 228 | 13 |
| Werribee | 0392020000… | 6 | 1 |
| Ringwood | 0392100000… | 9 | 2 |
| Clayton | 0392117000… | 16 | 2 |
Had a call from a Craigieburn 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.
Craigieburn numbers: questions and answers
Where is the Craigieburn numbering area?
Craigieburn is in Victoria, in the Hume council area. The nearest other numbering areas are Kalkallo (7 km), Sunbury (19 km) and Sydenham (19 km).
What area code does Craigieburn use?
Craigieburn numbers use area code 03. Its register blocks start with 03 83, 03 73, 03 93, 03 92 and 03 99. From overseas, drop the 0 and dial +61 3 followed by the eight-digit local number.
What time zone is Craigieburn in?
Craigieburn 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 Craigieburn phone numbers?
The ACMA register lists 22 carriers with allocated blocks in Craigieburn. By allocated numbers the largest are Telstra (31%), Optus Networks (20.4%) and Symbio Networks (9%). A number can since have been ported to another provider.
When were Craigieburn numbers first allocated?
The oldest block on record for Craigieburn 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 Craigieburn 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 Craigieburn
Scammers spoof local landline numbers to look nearby. Guides: Australian area codes, how caller ID spoofing works.