Whose number starts with 0436?
The 0436 mobile prefix appears in the ACMA register as held by TELSTRA LIMITED, which holds every one of the window's 1m allocated numbers. The earliest allocation in 0436 is dated 29 February 2016, the most recent 11 October 2016.
Source: ACMA register, data as of 16/10/2026
The 0436 ranges in the ACMA register
The 0436 window is covered by 2 allocations with a combined capacity of about 1m numbers, in the hands of 1 holder. None of the ranges has ever been transferred: the original allocatee is still the holder of record.
| Range | Numbers | Original allocatee | Current holder | Allocated | Transferred |
|---|---|---|---|---|---|
| 0436000000–0436499999 | 500,000 | TELSTRA LIMITED | TELSTRA LIMITED | 29/02/2016 | — |
| 0436500000–0436999999 | 500,000 | TELSTRA LIMITED | TELSTRA LIMITED | 11/10/2016 | — |
- 0436000000–0436499999 (500,000 numbers) was allocated on 29 February 2016 to TELSTRA LIMITED and has stayed with the original allocatee.
- 0436500000–0436999999 (500,000 numbers) was allocated on 11 October 2016 to TELSTRA LIMITED and has stayed with the original allocatee.
Telstra in 0436 and nationally
TELSTRA LIMITED holds 1m numbers in 0436 — the whole window — which is a small slice of its 78.8m mobile numbers nationally, or about 91% of every allocated Australian mobile number. The register places Telstra in 52 different 04xx prefixes, including 3 of the other nine in the 0430–0439 decade (0437, 0438, 0439).
| Holder | Numbers in 0436 | Share of 0436 | Share of all 04 numbers | Prefixes held |
|---|---|---|---|---|
| TELSTRA LIMITED | 1m | 100% | 91% | 52 |
The other prefixes in the 0430–0439 decade
Held by Vodafone Australia, Optus Mobile and Telstra: 0430, 0431, 0432, 0433, 0434, 0435, 0437, 0438, 0439. The decade's oldest allocation is in 0439 (17 September 1999, Telstra), its youngest in 0435 (21 April 2005, Optus Mobile). Every allocated prefix in the decade has a single holder.
What people check and report about 0436 numbers
From searches typed into this site's lookup form since 3 September 2026, and the verdicts and moderated reports visitors left. A check usually follows a missed call.
Verdicts and reports on 0436 numbers: 2 verdicts, 1 report
2 nuisance. Too few to show shares yet.
Report types: Scam attempt (1).
Most-reported and most-checked 0436 numbers
| Number | Verdicts | Reports | People checking |
|---|---|---|---|
| 0436 433 931 | 1 nuisance | 1 | 1 |
Had a call from a 0436 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.
- Forward spam texts to 0429 999 888
The ACMA collects unsolicited commercial texts forwarded to 0429 999 888 (standard message charges apply). Don't edit the message first. Scam texts that impersonate a bank, toll road or delivery company go to Scamwatch instead.
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.
0436 numbers: questions and answers
Which network does a 0436 number belong to?
The ACMA register lists Telstra as the holder of every allocated number in 0436 (1m numbers). Mobile numbers can be moved to another network, so the caller may now be with a different provider.
When was 0436 first allocated?
The earliest 0436 range in the register is dated 29 February 2016; the most recent 11 October 2016. The window is covered by 2 register ranges.
How big is Telstra's share of Australian mobile numbers?
Across the whole 04 range, Telstra holds about 91% of allocated mobile numbers, spread over 52 of the 04xx prefixes.
Are calls from 0436 numbers scams?
Visitors have left 2 verdicts on 0436 numbers (0 scam, 2 nuisance, 0 safe) and 1 moderated report, across 19 numbers people looked up. Most 0436 numbers belong to ordinary subscribers.
How do I report a scam call or text from a 0436 number?
Report scam calls and texts to Scamwatch. Forward unsolicited commercial texts to the ACMA on 0429 999 888, and block the number from your phone's recent calls or messages. If you lost money, call your bank first, then report it through ReportCyber.
This prefix carries 3 distinct register facts — below the 5 this site requires before a prefix page is offered to search engines. It stays available for direct lookups.
Check a 0436 number
Range data is not personal data and the number on your screen can be spoofed. Scam calls: Scamwatch. Guides: Who called me from this number?, Which carrier owns which mobile prefix?