Whose number starts with 0420?
The 0420 mobile prefix appears in the ACMA register as held mainly by SYDNEY TRAINS, alongside 4 other range holders. Important: the register names the range holder; after number porting an individual 0420 number can operate on any other network today.
Source: ACMA register, data as of 31/08/2026
The 0420 ranges in the ACMA register
The 0420 window is covered by 8 allocations with a combined capacity of about 940,000 numbers, in the hands of 5 different holders.
| Range start | Numbers | Held by |
|---|---|---|
| 0420000000… | 20,000 | SYDNEY TRAINS |
| 0420020000… | 10,000 | SINCH AUSTRALIA PTY LTD |
| 0420040000… | 10,000 | SYMBIO NETWORKS PTY LTD |
| 0420100000… | 10,000 | PIVOTEL SATELLITE PTY LIMITED |
| 0420110000… | 90,000 | PIVOTEL SATELLITE PTY LIMITED |
| 0420200000… | 800,000 | VODAFONE AUSTRALIA PTY LIMITED |
Excerpt: the 6 lowest of 8 ranges (source: ACMA register).
No published reports for this prefix yet.
Check a 0420 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?