Clayton: landline numbers and carriers

Clayton 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 942,500 allocated numbers, held by 22 carriers and spread over the 0385…, 0375…, 0395…, 0392… and 0399… dialling prefixes. That makes Clayton the 3rd largest of 475 numbering areas under 03 by block count, with 2.74% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Clayton area — though the line may since have been ported, and caller ID can be spoofed.

Source: ACMA register, data as of 15/10/2026

116blocks in the register
22carriers with allocations
942,500allocated numbers
1991first allocation

Where Clayton is

State or territory
Victoria
Council area
Monash
Local time
— AEST, UTC+10; AEDT, UTC+11 in summer
Number format
03 85xx xxxx; from overseas +61 3 85xx xxxx
Nearest numbering areas
Dandenong (11 km), Ringwood (14 km), Melbourne (17 km), Croydon (19 km), Eltham (22 km)

Locality, council and state: ABS ASGS Edition 3 (CC BY 4.0). Distances are straight-line between localities.

Map of the Clayton numbering area in Victoria and the nearest other numbering areas
Shaded: Monash council area. The ACMA doesn't publish numbering-area boundaries, so the dot marks the Clayton locality rather than an exact outline; the inset shows where the map sits in Australia. Boundaries: ABS (CC BY 4.0).

How Clayton was numbered

The oldest block in Clayton 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 — 24 of 116 — date from 1990–1994, but allocations here span 35 years. 38 of the blocks are the standard 1,000-number size, and 57 are 10,000 numbers or larger. 25 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.

PeriodBlocks allocated
1990–199424
1995–199919
2000–200415
2005–200912
2010–201411
2015–201914
2020–202414
2025–20297

The carriers in Clayton

TELSTRA LIMITED holds the largest share here with 62.6% of allocated numbers across 44 blocks; OPTUS NETWORKS PTY LIMITED is second with 17.5%, 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. TELSTRA LIMITED (1), OPTUS NETWORKS PTY LIMITED (7) and SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1) hold blocks originally allocated to another carrier.

CarrierBlocksNumbersShareFirst blockLatest block
TELSTRA LIMITED44590,00062.6%30/06/199126/02/2021
OPTUS NETWORKS PTY LIMITED21164,50017.5%02/07/199214/08/2020
SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED431,0003.3%30/03/200017/09/2019
PRIMUS TELECOMMUNICATIONS PTY LIMITED524,0002.5%16/12/200215/03/2017
OPTUS MOBILE PTY LIMITED422,0002.3%30/05/200710/04/2008
SYMBIO NETWORKS PTY LTD1121,0002.2%24/06/200519/08/2026
PIPE INTERNATIONAL (AUSTRALIA) PTY LTD220,0002.1%23/02/200109/08/2001
TPG TELECOM LIMITED220,0002.1%24/12/199828/04/2000
PIPE NETWORKS PTY LIMITED519,0002%14/07/199927/09/2024
CHIME COMMUNICATIONS PTY LTD110,0001.1%14/07/200414/07/2004
NETSIP PTY LTD55,0000.5%14/02/201810/07/2026
TWILIO AUSTRALIA PTY LTD15,0000.5%01/10/202601/10/2026
VIRTUTEL PTY LTD22,0000.2%18/03/201520/12/2015
ADARGA PTY LTD11,0000.1%16/09/202516/09/2025
AGILE PTY LTD11,0000.1%31/05/200531/05/2005
C2A INTERNET.COM.AU PTY. LTD.11,0000.1%13/07/202313/07/2023
CHECK TECHNOLOGY GROUP PTY LTD11,0000.1%31/01/202231/01/2022
LMGPS LTD11,0000.1%23/11/202323/11/2023
NETERA PTY LTD11,0000.1%24/10/202524/10/2025
PIVOTEL SATELLITE PTY LIMITED11,0000.1%16/04/202516/04/2025
THE TRUSTEE FOR READING FAMILY TRUST11,0000.1%21/10/201921/10/2019
WHY PAY MORE 4 LESS PTY LTD11,0000.1%10/05/201810/05/2018

Number blocks registered for Clayton

Every registered block for this area is allocated to a carrier. All 116 blocks, ascending:

Block startNumbersOriginal allocateeCurrent holderAllocatedTransferred
0375000000…1,000=VIRTUTEL PTY LTD20/12/2015—
0375001000…1,000=SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED14/07/2016—
0375002000…1,000=NETSIP PTY LTD14/02/2018—
0375003000…1,000=ADARGA PTY LTD16/09/2025—
0375004000…1,000=THE TRUSTEE FOR READING FAMILY TRUST21/10/2019—
0375005000…1,000TWILIO AUSTRALIA PTY LTDSYMBIO NETWORKS PTY LTD24/09/202015/10/2020
0375006000…1,000=WHY PAY MORE 4 LESS PTY LTD10/05/2018—
0375007000…1,000=NETSIP PTY LTD26/10/2021—
0375008000…10,000=OPTUS NETWORKS PTY LIMITED30/05/2019—
0375018000…1,000=OPTUS NETWORKS PTY LIMITED12/11/2019—
0375019000…1,000=CHECK TECHNOLOGY GROUP PTY LTD31/01/2022—
0375020000…10,000=SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED17/09/2019—
0375030000…5,000=SYMBIO NETWORKS PTY LTD14/11/2019—
0375035000…2,000AAPT LIMITEDPIPE NETWORKS PTY LIMITED03/06/202024/03/2026
0375037000…1,000AAPT LIMITEDPIPE NETWORKS PTY LIMITED02/02/202224/03/2026
0375038000…1,000=NETSIP PTY LTD04/05/2023—
0375039000…5,000AAPT LIMITEDPIPE NETWORKS PTY LIMITED29/05/202324/03/2026
0375044000…1,000=C2A INTERNET.COM.AU PTY. LTD.13/07/2023—
0375045000…1,000=LMGPS LTD23/11/2023—
0375046000…1,000=PIVOTEL SATELLITE PTY LIMITED16/04/2025—
0375047000…1,000=NETSIP PTY LTD12/05/2025—
0375048000…2,000=SYMBIO NETWORKS PTY LTD19/06/2020—
0375050000…10,000=OPTUS NETWORKS PTY LIMITED08/08/2016—
0375060000…10,000=OPTUS NETWORKS PTY LIMITED14/08/2020—
0375070000…1,000=NETERA PTY LTD24/10/2025—
0375071000…1,000=NETSIP PTY LTD10/07/2026—
0375072000…1,000=SYMBIO NETWORKS PTY LTD19/08/2026—
0375073000…5,000=TWILIO AUSTRALIA PTY LTD01/10/2026—
0375110000…5,000=TELSTRA LIMITED26/02/2021—
0375115000…2,000=SYMBIO NETWORKS PTY LTD25/09/2023—
0375777000…1,000AAPT LIMITEDPIPE NETWORKS PTY LIMITED27/09/202424/03/2026
0385010000…10,000HUTCHISON TELECOMMUNICATIONS (AUSTRALIA) LIMITEDTPG TELECOM LIMITED24/12/199828/04/2017
0385050000…10,000HUTCHISON TELECOMMUNICATIONS (AUSTRALIA) LIMITEDTPG TELECOM LIMITED28/04/200028/04/2017
0385100000…10,000IPTEL PTY LIMITEDSOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED30/03/200001/12/2004
0385110000…10,000SINGTEL OPTUS PTY LIMITEDOPTUS NETWORKS PTY LIMITED14/02/200110/02/2003
0385120000…10,000POWERTEL LIMITEDPIPE INTERNATIONAL (AUSTRALIA) PTY LTD23/02/200124/03/2026
0385130000…10,000POWERTEL LIMITEDPIPE INTERNATIONAL (AUSTRALIA) PTY LTD09/08/200124/03/2026
0385140000…10,000AAPT LIMITEDPIPE NETWORKS PTY LIMITED14/07/199924/03/2026
0385160000…10,000=CHIME COMMUNICATIONS PTY LTD14/07/2004—
0385181000…1,000OPTUS NETWORKS PTY LIMITEDOPTUS MOBILE PTY LIMITED30/05/2007—
0385182000…1,000=OPTUS MOBILE PTY LIMITED07/09/2007—
0385183000…1,000VOXBONESYMBIO NETWORKS PTY LTD09/09/201021/02/2011
0385185000…1,000=SYMBIO NETWORKS PTY LTD10/08/2010—
0385186000…1,000IVOX PTY LTDSYMBIO NETWORKS PTY LTD18/06/201216/06/2014
0385188000…1,000VOCUS PTY LTDPRIMUS TELECOMMUNICATIONS PTY LIMITED11/02/201408/07/2016
0385189000…1,000=SYMBIO NETWORKS PTY LTD24/04/2014—
0385210000…1,000ENGIN PTY LIMITEDPRIMUS TELECOMMUNICATIONS PTY LIMITED24/12/200411/08/2015
0385212000…1,000=AGILE PTY LTD31/05/200508/02/2011
0385213000…1,000=OPTUS NETWORKS PTY LIMITED20/06/2005—
0385214000…1,000GOTALK LIMITEDSYMBIO NETWORKS PTY LTD24/06/200525/07/2013
0385215000…5,000=PRIMUS TELECOMMUNICATIONS PTY LIMITED03/02/2012—
0385220000…10,000=OPTUS MOBILE PTY LIMITED10/04/2008—
0385230000…10,000=OPTUS NETWORKS PTY LIMITED29/05/2008—
0385240000…10,000=SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED20/11/2012—
0385260000…10,000=PRIMUS TELECOMMUNICATIONS PTY LIMITED16/12/2002—
0385400000…10,000=TELSTRA LIMITED17/02/2000—
0385410000…10,000=TELSTRA LIMITED22/10/1997—
0385420000…10,000=TELSTRA LIMITED23/02/2001—
0385430000…10,000=TELSTRA LIMITED20/11/1997—
0385440000…10,000=TELSTRA LIMITED17/02/2000—
0385450000…10,000=TELSTRA LIMITED15/09/2000—
0385460000…10,000=TELSTRA LIMITED13/11/2007—
0385490000…10,000=TELSTRA LIMITED03/02/1999—
0385500000…10,000RSL COM AUSTRALIA PTY LIMITEDTELSTRA LIMITED22/02/200628/08/2009
0385510000…10,000=TELSTRA LIMITED17/02/2000—
0385530000…10,000=OPTUS MOBILE PTY LIMITED11/01/2008—
0385550000…10,000=OPTUS NETWORKS PTY LIMITED24/08/2006—
0385580000…10,000=TELSTRA LIMITED22/10/1997—
0385610000…20,000=TELSTRA LIMITED22/10/1997—
0385650000…10,000=OPTUS NETWORKS PTY LIMITED31/10/2014—
0385660000…1,000=VIRTUTEL PTY LTD18/03/2015—
0385661000…5,000=SYMBIO NETWORKS PTY LTD28/04/2016—
0385690000…10,000=OPTUS NETWORKS PTY LIMITED08/05/2015—
0385710000…10,000=OPTUS NETWORKS PTY LIMITED04/07/2012—
0385720000…10,000=OPTUS NETWORKS PTY LIMITED27/06/2013—
0385770000…7,000=PRIMUS TELECOMMUNICATIONS PTY LIMITED15/03/2017—
0385777000…1,000=OPTUS NETWORKS PTY LIMITED15/11/2010—
0385810000…10,000=OPTUS NETWORKS PTY LIMITED12/08/2005—
0385850000…10,000=TELSTRA LIMITED17/02/2000—
0385860000…20,000=TELSTRA LIMITED22/10/1997—
0385880000…10,000=OPTUS NETWORKS PTY LIMITED30/06/2004—
0392117000…1,000SINGTEL OPTUS PTY LIMITEDOPTUS NETWORKS PTY LIMITED02/07/199210/02/2003
0392390000…10,000=TELSTRA LIMITED25/05/1994—
0392447000…1,000=TELSTRA LIMITED30/06/1991—
0392530000…10,000=TELSTRA LIMITED30/06/1991—
0392621000…3,000=TELSTRA LIMITED30/06/1991—
0392625000…1,000=TELSTRA LIMITED30/06/1991—
0392630000…6,000=TELSTRA LIMITED30/06/1991—
0392637000…4,000=TELSTRA LIMITED30/06/1991—
0392643000…1,000=TELSTRA LIMITED30/06/1991—
0392649000…9,000=TELSTRA LIMITED30/06/1991—
0392659000…1,000=TELSTRA LIMITED30/06/1991—
0392710000…10,000=TELSTRA LIMITED22/08/1996—
0395010000…10,000SINGTEL OPTUS PTY LIMITEDOPTUS NETWORKS PTY LIMITED02/07/199210/02/2003
0395110000…20,000SINGTEL OPTUS PTY LIMITEDOPTUS NETWORKS PTY LIMITED22/05/199510/02/2003
0395150000…10,000SINGTEL OPTUS PTY LIMITEDOPTUS NETWORKS PTY LIMITED22/05/199510/02/2003
0395180000…2,000=TELSTRA LIMITED30/06/1991—
0395183000…7,000=TELSTRA LIMITED30/06/1991—
0395350000…10,000=TELSTRA LIMITED12/09/1997—
0395380000…10,000=TELSTRA LIMITED02/10/1997—
0395400000…130,000=TELSTRA LIMITED30/06/1991—
0395580000…10,000=TELSTRA LIMITED30/06/1991—
0395600000…30,000=TELSTRA LIMITED30/06/1991—
0395650000…20,000=TELSTRA LIMITED30/06/1991—
0395740000…10,000=TELSTRA LIMITED30/06/1991—
0395800000…20,000=TELSTRA LIMITED30/06/1991—
0395820000…10,000=TELSTRA LIMITED07/06/1996—
0395830000…50,000=TELSTRA LIMITED30/06/1991—
0395880000…10,000=TELSTRA LIMITED12/06/1996—
0395890000…10,000=TELSTRA LIMITED30/06/1991—
0395900000…10,000=TELSTRA LIMITED12/06/1996—
0395940000…10,000=TELSTRA LIMITED01/05/1997—
0399020000…10,000=TELSTRA LIMITED13/09/1993—
0399050000…10,000=TELSTRA LIMITED13/09/1993—
0399150100…100SINGTEL OPTUS PTY LIMITEDOPTUS NETWORKS PTY LIMITED16/09/199913/01/2016
0399155400…400SINGTEL OPTUS PTY LIMITEDOPTUS NETWORKS PTY LIMITED16/09/199913/01/2016

Numbering areas next to Clayton in the register

Immediately above Clayton's blocks in the 0385…, 0375…, 0395…, 0392… and 0399… prefixes sit Melbourne, Werribee, Ringwood, Croydon, Dandenong and Whittlesea.

Numbering areaFirst blockBlocksCarriers
Melbourne0385000000…21112
Werribee0392020000…61
Ringwood0392100000…92
Croydon0392120000…82
Dandenong0392121000…71
Whittlesea0392161000…21

Had a call from a Clayton number?

No clear pattern in reports on these numbers yet. If a call worried you:

  1. 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.

  2. 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.

    Report to Scamwatch ↗

  3. 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.

    Do Not Call Register ↗

  4. 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.

    ReportCyber ↗IDCARE ↗

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.

Clayton numbers: questions and answers

Where is the Clayton numbering area?

Clayton is in Victoria, in the Monash council area. The nearest other numbering areas are Dandenong (11 km), Ringwood (14 km) and Melbourne (17 km).

What area code does Clayton use?

Clayton numbers use area code 03. Its register blocks start with 03 85, 03 75, 03 95, 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 Clayton in?

Clayton 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 Clayton phone numbers?

The ACMA register lists 22 carriers with allocated blocks in Clayton. By allocated numbers the largest are Telstra (62.6%), Optus Networks (17.5%) and Soul Pattinson Telecommunications (3.3%). A number can since have been ported to another provider.

When were Clayton numbers first allocated?

The oldest block on record for Clayton 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 Clayton 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 Clayton

Scammers spoof local landline numbers to look nearby. Guides: Australian area codes, how caller ID spoofing works.