- Uncertain
0402 001 799 (0402001799) silent call report: Optus mobile number called and hung up with no voicemail left.
Silent Call Reports for 0402 001 799
One contributor has reported receiving a call from 0402 001 799 (also written as 0402001799) that fits the pattern of a silent call. The caller dialled the number, remained silent, and disconnected without leaving any voicemail message or explanation. This type of behaviour is often associated with callback scams or automated systems testing active phone numbers.
The number is registered as an Optus mobile service, which is a legitimate carrier. However, legitimate numbers can be spoofed or misused, and the silent call pattern reported for 0402001799 warrants caution.
What Silent Calls from 0402 001 799 Indicate
Silent calls like the one from 0402 001 799 typically occur when automated dialling systems or scammers test whether a phone number is active and monitored. The contributor's experience - a call followed immediately by disconnection - suggests this number may be part of a larger campaign targeting multiple recipients.
If you receive a similar silent call from 0402001799, the caller may attempt to contact you again using a different approach, such as a follow-up call with a scripted message or an SMS. Some contributors report that after a silent call, they later receive calls from related numbers with scam or spam content.
Call Patterns and Timing
The report for 0402 001 799 was recorded as a missed call during business hours on 13 January 2026. No additional timing information is available from current reports, so the frequency or recurrence pattern remains unclear. If you experience repeated silent calls from 0402001799 or similar numbers, this may indicate systematic targeting rather than a one-off misdial.
What to Do If You Receive a Call from 0402 001 799
If 0402 001 799 or 0402001799 calls you:
- Do not: Return the call, answer if you don't recognise the number, or engage if the caller remains silent
- Do: Let it go to voicemail, block the number immediately in your phone settings, and note the time and date of the call
- Do: Be alert for follow-up contact attempts from this number or similar numbers in the coming days
- Do not: Assume silence means a wrong number - silent calls are often intentional probe calls
Callback scams work by prompting you to ring back a premium-rate number. By not returning the call to 0402 001 799, you avoid this trap entirely.
How to Report 0402 001 799
If you receive a silent call or suspect the number 0402001799 is involved in unwanted contact:
- Report to the Australian Communications and Media Authority (ACMA) at acma.gov.au - they investigate breaches of the Do Not Call Register and unwanted telemarketing
- Report to Scamwatch at scamwatch.gov.au if you believe the number is being used for scam activity
- Register your number on the Do Not Call Register at donotcall.gov.au to reduce unwanted calls from legitimate telemarketers (though this does not prevent scammers)
- Block 0402 001 799 in your phone's native settings to prevent future calls from this number
- Contribute your experience to Reverseau - community reports help other Australians identify patterns and stay informed about problematic numbers
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Called and hung up, no voicemail
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WRITE A REVIEWFrequently Asked Questions
What is a silent call and why did 0402 001 799 call without speaking?
A silent call is when someone rings your number but either doesn't speak or hangs up immediately. The call from 0402 001 799 (0402001799) fits this pattern. Scammers and automated systems use silent calls to test whether your phone number is active and answered by a real person. If you respond or the call rings through, they may add your number to a targeted contact list for follow-up scam attempts.
Should I call back 0402 001 799 or 0402001799?
No, do not call back 0402001799. Returning calls to numbers after silent calls is a common scam tactic. By not returning the call, you avoid potential premium-rate charges or being connected to scammers. If the caller has a legitimate reason to reach you, they will leave a voicemail message or contact you through other means.
Is 0402 001 799 a real Optus number?
0402 001 799 (0402001799) is formatted as an Optus mobile number, but this does not mean the call is legitimate. Scammers frequently spoof legitimate carrier numbers or use stolen credentials to make calls appear genuine. The fact that a number is registered to a major provider like Optus does not guarantee the caller's identity or intentions.
What should I do if 0402 001 799 calls me repeatedly?
If you receive multiple calls from 0402001799 or similar silent calls, block the number immediately in your phone's settings. Document each call with the date and time. Report the number to ACMA (acma.gov.au) and Scamwatch (scamwatch.gov.au) as part of a pattern of unwanted contact. Repeated silent calls from 0402 001 799 suggest systematic targeting rather than accidental dialling.
Can I trace who called from 0402 001 799?
Tracing a silent call from 0402001799 is difficult without assistance from your phone provider or authorities. Scammers often use spoofed numbers or burner phones to avoid detection. Contact your carrier (Optus, in this case) to request information about the call, though they may have limited details. Report the number to ACMA or Scamwatch, who have investigative resources beyond what individual consumers can access.
Why would someone call and hang up without leaving a voicemail?
Silent calls from 0402001799 without voicemail are typically part of a larger campaign. Scammers use this tactic to confirm your number is active, monitor your response patterns, or test your willingness to engage. Some may follow up with a different approach - such as a call with a recorded message or an SMS offering false services. By not responding to the initial silent call from 0402 001 799, you reduce your likelihood of being targeted further.