- Unknown
0401 817 529 (0401817529): Contributors report silent calls with no response when answered. Optus mobile number flagged for nuisance activity.
Silent Call Reports for 0401 817 529
Two contributors have reported calls from 0401 817 529 (also written as 0401817529) where the caller remains silent after the call is answered. Both incidents involved the contributor greeting the caller multiple times without any response, a common pattern associated with silent or robocall operations testing active numbers.
The Optus mobile number 0401817529 has been flagged for this silent call behaviour, which typically indicates the caller's system has identified a live, answered line and may use this information for further contact attempts or sale of contact data to other telemarketers.
What Contributors Experienced
When contributors answered calls from 0401 817 529, the experience was identical across both reports. The caller remained completely silent despite being greeted verbally three times. No background noise, breathing, or indication of a person or automated system was detected. The calls then disconnected without any further action or message.
This silent call pattern from 0401817529 differs from typical robocall behaviour where automated systems often play a recorded message or prompt. Instead, the silence suggests either a callback scam operation confirming active numbers, or a telemarketing autodial system that failed to connect properly to an agent.
Report Timeline and Frequency
The two reports for 0401 817 529 occurred on different dates, with the most recent call logged on 6 March 2026 during late morning hours (approximately 9:19 AM), and an earlier call on 27 February 2026 during early morning hours (approximately 2:48 AM). The timing variation, particularly the early morning call, is consistent with automated dialling systems that operate across all hours without regard for typical business times.
What to Do If You Receive a Call from 0401 817 529
Silent calls can indicate your number is being tested for activity or collected for resale to other telemarketers. Here's how to respond:
- Do not: Return the call, engage with the caller, or provide any information
- Do: Hang up immediately without speaking further
- Do: Block 0401 817 529 on your phone to prevent future calls
- Do: Note the date and time if you receive additional calls from 0401817529
- Do: Be cautious if you receive follow-up calls from other numbers shortly after - silent calls often precede targeted scam attempts
How to Report 0401 817 529
If you receive silent or nuisance calls from 0401 817 529 (0401817529), report the activity to Australian communications authorities:
- ACMA (Australian Communications and Media Authority): Report nuisance calls at acma.gov.au - provide the date, time, and details of the call
- Do Not Call Register: Register your number at donotcall.gov.au to opt out of telemarketing. Silent calls may violate these rules
- Reverseau: Contribute your experience with 0401 817 529 to help other Australians identify this number and protect against silent call patterns
Help others by sharing your experience with 0401 817 529!
WRITE A REVIEWRatings Distribution
What Our Users Reviewed
Called, answered, said hello 3 times, no response
Answered said hello 3 times, no response
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WRITE A REVIEWFrequently Asked Questions
Why am I receiving silent calls from 0401 817 529?
Silent calls from 0401 817 529 (0401817529) typically serve two purposes: confirming your number is active and monitored by a person, or testing your number for inclusion in telemarketing lists. Contributors who answered calls from 0401817529 reported complete silence with no response, suggesting an automated system or operator testing live lines.
Should I call back the number 0401817529?
No. Do not return calls to 0401817529 or 0401 817 529. Calling back confirms your number is active and monitored, which encourages further contact from the caller and potentially other telemarketers who may have purchased your details. Silent callers often use callback requests as a tactic to identify engaged, responsive numbers.
What time did the calls from 0401 817 529 occur?
Contributors reported calls from 0401 817 529 at different times: one early morning call around 2:48 AM and one late morning call around 9:19 AM. The timing variation suggests automated dialling across all hours, rather than a legitimate business making contact during standard business hours.
Is 0401 817 529 a scam or just nuisance calls?
Currently, 0401817529 is reported as nuisance activity, specifically silent calls. While silent calls are not inherently scams, they are often used by fraudulent operations to identify active numbers for later targeting with scams, investment schemes, or impersonation calls. The silent call tactic makes this Optus mobile number 0401 817 529 worth blocking immediately.
How can I block calls from 0401817529?
Most Australian phones allow you to block numbers directly. In your phone's contacts or call history, select 0401817529 and choose 'Block' or 'Add to Blocked List'. On iPhone, use the 'Block this Caller' option. On Android, tap the three-dot menu and select 'Block number'. Additionally, register 0401 817 529 as a nuisance number with your phone provider (Optus, in this case).
What should I do if I keep receiving calls from 0401 817 529?
If repeated calls from 0401817529 or 0401 817 529 continue, document each incident with date and time, block the number immediately, and report to ACMA at acma.gov.au. If the pattern escalates to abusive or threatening calls, or if different numbers contact you following the silent calls from 0401817529, escalate your report to include potential coordinated harassing activity.