Whose number starts with 0451?
The 0451 mobile prefix appears in the ACMA register as held by VODAFONE AUSTRALIA PTY LIMITED. Important: the register names the range holder; after number porting an individual 0451 number can operate on any other network today.
Source: ACMA register, data as of 31/08/2026
The 045x ranges opened well after the GSM classics, in the smartphone era, and were allocated across the newer carriers and MVNOs. A 0451 number is usually a relatively recent activation compared with 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.
| Range start | Numbers | Held by |
|---|---|---|
| 0451000000… | 1m | VODAFONE AUSTRALIA PTY LIMITED |
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.
No published reports for this prefix yet.
Check a 0451 number
Worth knowing
- The prefix tells you where a line was issued, not who is calling: range data is not personal data, and the number on your screen can be spoofed.
- Report scam calls to Scamwatch; unwanted telemarketing can be reported to the ACMA once your number has been on the Do Not Call Register for 30 days.
- Learn more: Who called me from this number? and Which carrier owns which mobile prefix?