Harden: landline numbers and carriers

Harden is one of the town-level numbering areas the ACMA register uses under area code 02 (NSW & ACT). The register lists 33 number blocks for it with about 24,000 allocated numbers, held by 19 carriers and spread over the 0253… and 0263… dialling prefixes. That makes Harden the 90th largest of 576 numbering areas under 02 by block count, with 0.06% of the area code's allocated numbers. A landline that calls you from one of these blocks was issued for the Harden area — though the line may since have been ported, and caller ID can be spoofed.

Source: ACMA register, data as of 16/10/2026

33blocks in the register
19carriers with allocations
24,000allocated numbers
1991first allocation

Where Harden is

State or territory
New South Wales
Council area
Hilltops
Local time
— AEST, UTC+10; AEDT, UTC+11 in summer
Number format
02 53xx xxxx; from overseas +61 2 53xx xxxx
Nearest numbering areas
Galong (18 km), Wallendbeen (23 km), Young (28 km), Binalong (29 km), Cootamundra (32 km)

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

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

How Harden was numbered

The oldest block in Harden 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 33 — date from 2015–2019, but allocations here span 35 years. 10 of the blocks are the standard 1,000-number size, 20 are 100-number blocks of the kind the ACMA has issued to VoIP and wholesale carriers since the mid-2000s. 7 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.

PeriodBlocks allocated
1990–19943
2000–20043
2005–20095
2010–20144
2015–20198
2020–20246
2025–20294

The carriers in Harden

TELSTRA LIMITED holds the largest share here with 41.7% of allocated numbers across 4 blocks; SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED is second with 12.9%, and 17 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. SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED (1), SYMBIO NETWORKS PTY LTD (3) and PIPE NETWORKS PTY LIMITED (2) hold blocks originally allocated to another carrier.

CarrierBlocksNumbersShareFirst blockLatest block
TELSTRA LIMITED410,00041.7%30/06/199108/09/2011
SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED23,10012.9%30/03/200014/07/2016
SYMBIO NETWORKS PTY LTD72,50010.4%22/06/200519/08/2026
OPTUS NETWORKS PTY LIMITED22,0008.3%08/06/200524/04/2007
OPTUS MOBILE PTY LIMITED12,0008.3%09/10/200709/10/2007
PIPE NETWORKS PTY LIMITED21,1004.6%03/09/201205/07/2018
PRIMUS TELECOMMUNICATIONS PTY LIMITED21,1004.6%24/12/200403/06/2005
CHIME COMMUNICATIONS PTY LTD11,0004.2%14/07/200414/07/2004
NETSIP PTY LTD22000.8%14/02/201826/10/2021
ADARGA PTY LTD11000.4%16/09/202516/09/2025
C2A INTERNET.COM.AU PTY. LTD.11000.4%13/07/202313/07/2023
CHECK TECHNOLOGY GROUP PTY LTD11000.4%31/01/202231/01/2022
GENNEXT ENTERPRISES PTY LTD11000.4%03/10/201903/10/2019
LMGPS LTD11000.4%23/11/202323/11/2023
NETERA PTY LTD11000.4%24/10/202524/10/2025
PIVOTEL SATELLITE PTY LIMITED11000.4%16/04/202516/04/2025
THE TRUSTEE FOR READING FAMILY TRUST11000.4%21/10/201921/10/2019
VIRTUTEL PTY LTD11000.4%20/12/201520/12/2015
WHY PAY MORE 4 LESS PTY LTD11000.4%10/05/201810/05/2018

Number blocks registered for Harden

Every registered block for this area is allocated to a carrier. All 33 blocks, ascending:

Block startNumbersOriginal allocateeCurrent holderAllocatedTransferred
0253011800…100=VIRTUTEL PTY LTD20/12/2015—
0253013000…100TWILIO AUSTRALIA PTY LTDSYMBIO NETWORKS PTY LTD24/09/202024/02/2021
0253025100…100=PRIMUS TELECOMMUNICATIONS PTY LIMITED03/06/2005—
0253025200…100GOTALK LIMITEDSYMBIO NETWORKS PTY LTD22/06/200512/07/2013
0253025400…100=SYMBIO NETWORKS PTY LTD24/04/2014—
0253025500…100IVOX PTY LTDSYMBIO NETWORKS PTY LTD18/06/201220/06/2014
0253025600…100AAPT LIMITEDPIPE NETWORKS PTY LIMITED03/09/201224/03/2026
0253095000…1,000=OPTUS NETWORKS PTY LIMITED08/06/2005—
0253212000…1,000=SYMBIO NETWORKS PTY LTD30/05/2016—
0253243800…100=SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED14/07/2016—
0253253100…100=NETSIP PTY LTD14/02/2018—
0253268700…100=THE TRUSTEE FOR READING FAMILY TRUST21/10/2019—
0253283700…100=LMGPS LTD23/11/2023—
0253296300…100=WHY PAY MORE 4 LESS PTY LTD10/05/2018—
0253308000…1,000AAPT LIMITEDPIPE NETWORKS PTY LIMITED05/07/201824/03/2026
0253397700…100=NETSIP PTY LTD26/10/2021—
0253398900…100=GENNEXT ENTERPRISES PTY LTD03/10/2019—
0253415800…100=CHECK TECHNOLOGY GROUP PTY LTD31/01/2022—
0253456000…1,000=SYMBIO NETWORKS PTY LTD19/06/2020—
0253469100…100=C2A INTERNET.COM.AU PTY. LTD.13/07/2023—
0253487400…100=PIVOTEL SATELLITE PTY LIMITED16/04/2025—
0253499700…100=ADARGA PTY LTD16/09/2025—
0253519000…100=NETERA PTY LTD24/10/2025—
0253555000…1,000=OPTUS NETWORKS PTY LIMITED24/04/2007—
0253626300…100=SYMBIO NETWORKS PTY LTD19/08/2026—
0263103000…3,000IPTEL PTY LIMITEDSOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED30/03/200001/12/2004
0263806000…1,000=TELSTRA LIMITED30/06/1991—
0263860000…7,000=TELSTRA LIMITED30/06/1991—
0263869000…1,000=TELSTRA LIMITED30/06/1991—
0263888000…1,000=CHIME COMMUNICATIONS PTY LTD14/07/2004—
0263905000…2,000=OPTUS MOBILE PTY LIMITED09/10/2007—
0263916000…1,000=TELSTRA LIMITED08/09/2011—
0263982000…1,000ENGIN PTY LIMITEDPRIMUS TELECOMMUNICATIONS PTY LIMITED24/12/200411/08/2015

Numbering areas next to Harden in the register

Immediately below and above Harden's blocks in the 0253… and 0263… prefixes sit Gooloogong, Greenethorpe, Grenfell, Gulgong, Lyndhurst, Hampton, Hill End (NSW), Manildra, Kandos, Killongbutta, Koorawatha and Millthorpe.

Numbering areaFirst blockBlocksCarriers
Gooloogong0253009900…2718
Greenethorpe0253010700…2718
Grenfell0253010800…3319
Gulgong0253010900…3219
Lyndhurst0253011100…3018
Hampton0253011700…2718
Hill End (NSW)0253011900…3017
Manildra0253012100…3118
Kandos0253012700…3319
Killongbutta0253012800…3118
Koorawatha0253012900…2818
Millthorpe0253013100…3119

Had a call from a Harden 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 the NSW Police Force. 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.

Harden numbers: questions and answers

Where is the Harden numbering area?

Harden is in New South Wales, in the Hilltops council area. The nearest other numbering areas are Galong (18 km), Wallendbeen (23 km) and Young (28 km).

What area code does Harden use?

Harden numbers use area code 02. Its register blocks start with 02 53 and 02 63. From overseas, drop the 0 and dial +61 2 followed by the eight-digit local number.

What time zone is Harden in?

Harden 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 Harden phone numbers?

The ACMA register lists 19 carriers with allocated blocks in Harden. By allocated numbers the largest are Telstra (41.7%), Soul Pattinson Telecommunications (12.9%) and Symbio Networks (10.4%). A number can since have been ported to another provider.

When were Harden numbers first allocated?

The oldest block on record for Harden 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 Harden 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 Harden

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