- Spam
Community report for 04 8504 0456 (0485040456): Optus mobile leaving silent voicemails. One contributor received an eerie minute-long silence.
Silent Voicemail Reports for 04 8504 0456
A contributor has reported receiving a voicemail from 04 8504 0456 (also written as 0485040456) consisting entirely of silence. The Optus mobile number left a full minute of blank audio with no message, introduction, or explanation. This type of call pattern is commonly associated with robocall systems testing active numbers or callback scams probing for responses.
What This Silence Indicates
Silent or near-silent voicemails from 0485040456 suggest the call may have been automated. Callers using robodial systems often leave silence when reaching voicemail to confirm a number is active and monitored. The contributor who received the call from 04 8504 0456 did not answer, allowing the silence to be recorded as a voicemail message instead.
This behaviour differs from legitimate business voicemails, which typically include a greeting, reason for calling, or callback details. The complete absence of audio from 0485040456 over a full minute suggests either a system malfunction or intentional testing.
What to Do If You Receive a Call from 04 8504 0456
If 04 8504 0456 calls you:
- Do not: Answer calls from unknown numbers, return missed calls to unfamiliar numbers, or engage if someone eventually speaks
- Do: Let the call go to voicemail, check the message for content, block the number if it calls again, and report repeated calls
- Key action: Do not return a call to 0485040456. Silent calls often precede callback scams where returning the call incurs premium charges or connects you to a scam operator
How to Report 04 8504 0456
If you receive unwanted calls from this number, report it to help protect other Australians:
- Report to the Australian Communications and Media Authority (ACMA) at acma.gov.au - they track patterns across thousands of complaint reports
- Report to Scamwatch at scamwatch.gov.au if the call feels suspicious or you suspect a scam
- Register your number with the Do Not Call Register at donotcall.gov.au to reduce marketing calls (though this doesn't stop illegal callers)
- Share your experience on Reverseau to alert other contributors about 04 8504 0456
Help others by sharing your experience with 0485 040 456!
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What Our Users Reviewed
Voicemail left with just silence for a full minute
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WRITE A REVIEWFrequently Asked Questions
Why would someone call from 04 8504 0456 and leave only silence?
Silent voicemails typically indicate an automated system or robodial used to test whether a number is active. The contributor who received the call from 0485040456 did not answer, so the system's silence was captured as a voicemail. This is often a precursor to callback scams or follow-up calls from operators.
Should I call back a number that left a silent voicemail like 04 8504 0456?
No. Do not return calls to 0485040456 or any unfamiliar number that leaves silent voicemails. Calling back could connect you to a scam operator, incur premium charges, or confirm your number is monitored. Let these calls go to voicemail and block the number if it contacts you again.
Is 0485040456 a scam or just a nuisance call?
The single report from 04 8504 0456 describes a silent voicemail, which is classified as a nuisance call. However, silent calls are often used by automated systems that may hand off to scammers if you return the call. Treat 0485040456 as potentially dangerous and avoid engaging.
What can I do if 04 8504 0456 keeps calling me?
If you receive repeated calls from 04 8504 0456 (0485040456), block the number in your phone's settings. Most Australian mobile providers including Optus allow you to block specific numbers. Report the pattern to ACMA at acma.gov.au and contribute your experience to Reverseau so other contributors are aware.
Why does the report say 04 8504 0456 is on Optus?
Phone number lookup data shows 0485040456 is allocated to Optus Mobile. This means the number was originally issued by Optus, though it could have been ported to another provider or used by someone spoofing an Optus number. The allocation helps identify the original carrier.
Is there a way to block silent calls from numbers like 04 8504 0456?
Yes. Most modern smartphones allow you to block specific numbers. On 04 8504 0456's voicemail or call log entry, select block or report as spam. You can also use third-party call-screening apps that filter silent or robocalls. Report the number to ACMA so they can track patterns across Australia.