0400 690 342 - 0400690342: Suspicious Callback Scam Reports

• Uncertain
• Spam

0400 690 342 (0400690342): 3 community reports of missed calls with no voicemail and suspicious callback behaviour. Telstra mobile number.

Suspicious Callback Activity on 0400 690 342

Three contributors have reported calls from 0400 690 342 (also written as 0400690342), a Telstra mobile number, with unusual patterns suggesting potential callback scam activity. The reports indicate callers are making silent contact attempts, leaving no voicemail, and displaying evasive behaviour when called back.

What makes 0400690342 distinctive is the callback trap reported by one contributor who returned the missed call. Rather than engaging in normal conversation, the caller simply said goodbye and immediately disconnected, a hallmark of callback scam tactics designed to confirm active phone numbers for targeting.

What Happens When You Call Back 0400 690 342

One contributor tested the callback approach after missing a call from 0400 690 342 and encountered immediate hang-up behaviour. The caller answered, said goodbye, and terminated the connection within seconds. This pattern is consistent with automated systems harvesting live numbers rather than genuine callers seeking to reach specific people.

The behaviour of 0400690342 matches callback verification tactics where scammers dial numbers to establish which are active, then add confirmed numbers to target lists for later fraud attempts. Contributors report no voicemail messages, no company identification, and no legitimate reason for the silent contact.

Report Patterns and Timing

All three reports of 0400 690 342 came through missed calls across a 9-day period in early June 2026. No contributor answered the call, and the caller made no attempt to leave identifying information. Two contributors noted the absence of any voicemail, while a third who called back experienced the suspicious goodbye-and-disconnect behaviour.

One contributor specifically flagged surprise at receiving spam from a 0400 mobile number rather than a traditional business line, suggesting the number may have been repurposed or spoofed for callback scam purposes. The pattern across these 0400690342 reports shows coordinated, impersonal contact with no legitimate purpose.

What to Do If You Receive a Call from 0400 690 342

If 0400 690 342 calls you:

• Do not: Return the call, engage if you answer, or provide any personal information if you hear a voice
• Do: Let it go to voicemail, block the number immediately, and report it to your phone provider and ACMA
• Do not: Call back to test the number, as this confirms your number is active to scammers
• Do: Check your phone bill regularly for any charges or suspicious activity following calls from 0400690342

Callback scam verification calls often precede more aggressive fraud attempts. Blocking 0400 690 342 and reporting it prevents your number from being added to active target lists.

How to Report 0400 690 342

• Report to ACMA (Australian Communications and Media Authority) at acma.gov.au - include the date, time, and callback behaviour you experienced with 0400690342
• Report as spam or scam to your service provider (Telstra) via your account portal or customer service
• If you called back and incurred charges, request reversal from Telstra with the call details for 0400 690 342
• Share your experience on Reverseau to help other Australians recognise this 0400690342 pattern
• Block 0400 690 342 in your phone settings to prevent future contact

Frequently Asked Questions