Over a decade of community-reported mobile interactions, broken down by classification, prefix block, and carrier allocation - revealing where reports concentrate and what patterns emerge across the 04 numbering range.
About Mobile Number Classification
All Australian mobile numbers are allocated under the 04 prefix block, managed by ACMA as part of the national numbering plan. Within this range, sub-prefixes (041x through 049x) are assigned to individual carriers - a detail that matters because report concentration varies significantly across these allocations.
The dataset below draws from community-submitted interaction records spanning over a decade. Because mobile numbers are portable between carriers and frequently recycled, allocation data reflects the original registering provider, not necessarily the current operator.
Reporting Volume Overview
Reported Numbers
193,727
Total Reports
322,429
Reports (30d)
3,021
Active Numbers (30d)
2,476
30-Day Trend Overview
Weekly Report Volume
694
4w ago
676
3w ago
337
2w ago
1,034
This week
340 more reports this week compared to 4 weeks ago.
Reports (7d)
1,034
+47% relative to trailing 30-day average
Reports (30d)
3,021
Unique Numbers (7d)
906
distinct numbers reported this week
Scam Classification (30d)
18%
of classified reports
· all-time: 37%
Report Classifications
Contributors classify each interaction at the time of submission. Percentages reflect classified mobile reports only - unclassified submissions are excluded.
Scam
120,892 (37%)
Uncertain
68,157 (21%)
Suspicious
46,981 (15%)
Spam
43,871 (14%)
Nuisance
36,546 (11%)
Legitimate
5,982 (2%)
Report Concentration by Prefix
The 048x range consistently accounts for the largest share of mobile reports - a pattern tied to carrier-specific numbering allocations and number recycling within that block, rather than geographic factors. ACMA's numbering allocation register provides the underlying carrier assignments.
Prefix
Reports
Share
0485
35,582
26%
0480
30,727
22%
0488
16,854
12%
0489
15,495
11%
0483
12,807
9%
0420
6,366
5%
0482
6,319
5%
0481
5,226
4%
0403
5,086
4%
0423
4,594
3%
Most-Reported Mobile Numbers
Ranked by total community reports. A high count signals sustained attention from contributors, though it does not by itself confirm malicious activity.
Report counts here follow numbering allocations, not operational responsibility - carriers with larger number blocks naturally appear higher. A carrier leading this list does not imply its subscribers are more likely to make unwanted calls; it reflects the size and recycling rate of its allocated number pool.