Whose number starts with 0451?
The 0451 mobile prefix appears in the ACMA register as held by VODAFONE AUSTRALIA PTY LIMITED, which holds every one of the window's 1m allocated numbers. The earliest allocation in 0451 is dated 5 June 2008.
Source: ACMA register, data as of 16/10/2026
The story of 0451
0451 opened in the smartphone era: the register records the whole window as one million-number arc allocated to Vodafone Australia Pty Limited on 5 June 2008 — a year after 0450 — with no earlier allocatee and no transfer. Vodafone had already moved its older Vodafone Network ranges to the current entity in February 2007, so 0451 went straight to the company that holds it today. The 045x ranges filled quickly as pre-paid and MVNO customers on the Vodafone network took new numbers, which is why a 0451 number is usually a much more recent activation than the 041x old guard.
The 0451 ranges in the ACMA register
The 0451 window is covered by 1 allocation with a combined capacity of about 1m numbers, in the hands of 1 holder. None of the range has ever been transferred: the original allocatee is still the holder of record.
| Range | Numbers | Original allocatee | Current holder | Allocated | Transferred |
|---|---|---|---|---|---|
| 0451000000–0451999999 | 1m | VODAFONE AUSTRALIA PTY LIMITED | VODAFONE AUSTRALIA PTY LIMITED | 05/06/2008 | — |
- 0451000000–0451999999 (1m numbers) was allocated on 5 June 2008 to VODAFONE AUSTRALIA PTY LIMITED and has stayed with the original allocatee.
Vodafone Australia in 0451 and nationally
VODAFONE AUSTRALIA PTY LIMITED holds 1m numbers in 0451 — the whole window — which is a small slice of its 22.3m mobile numbers nationally, or about 25.7% of every allocated Australian mobile number. The register places Vodafone Australia in 17 different 04xx prefixes, including 2 of the other nine in the 0450–0459 decade (0450, 0452).
| Holder | Numbers in 0451 | Share of 0451 | Share of all 04 numbers | Prefixes held |
|---|---|---|---|---|
| VODAFONE AUSTRALIA PTY LIMITED | 1m | 100% | 25.7% | 17 |
The other prefixes in the 0450–0459 decade
Held by Vodafone Australia and Telstra: 0450, 0452, 0453 (unallocated), 0454, 0455, 0456, 0457, 0458, 0459. The decade's oldest allocation is in 0450 (22 June 2007, Vodafone Australia), its youngest in 0454 (12 June 2025, Telstra). One prefix in the decade is split between several holders: 0452.
What does a call from a 0451 number mean?
Newer ranges cycle through pre-paid SIMs faster, and telemarketing operations favour cheap recent activations — check the full number's reports rather than judging the prefix. Standard mobile rates apply; a 0451 number cannot pre-date June 2008.
What people check and report about 0451 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 0451 numbers: 0 verdicts, 1 report
Report types: Scam attempt (1).
Latest comments
Most-reported and most-checked 0451 numbers
| Number | Verdicts | Reports | People checking |
|---|---|---|---|
| 0451 503 484 | — | 1 | 1 |
Had a call from a 0451 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.
0451 numbers: questions and answers
Which network does a 0451 number belong to?
The ACMA register lists Vodafone Australia as the holder of every allocated number in 0451 (1m numbers). Mobile numbers can be moved to another network, so the caller may now be with a different provider.
When was 0451 first allocated?
The earliest 0451 range in the register is dated 5 June 2008. The window is covered by 1 register range.
How big is Vodafone Australia's share of Australian mobile numbers?
Across the whole 04 range, Vodafone Australia holds about 25.7% of allocated mobile numbers, spread over 17 of the 04xx prefixes.
Are calls from 0451 numbers scams?
Visitors have left 0 verdicts on 0451 numbers (0 scam, 0 nuisance, 0 safe) and 1 moderated report, across 26 numbers people looked up. Most 0451 numbers belong to ordinary subscribers.
How do I report a scam call or text from a 0451 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.
Check a 0451 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?
“called about fencing and tree lopping work (after knocking on my door and offering to do work) gave me a flyer for "Frontline Roofing OZ PTY LTD" verbally quoted $5K for tree removal but no written quote and i cant fi…”
Scam attempt · 0451 503 484 · 29 Sept 2026