03 8804 5831 - 0388045831: Silent Calls and Robocall Reports

• Uncertain
• Spam
• Scam
• Suspicious

Community reports for 03 8804 5831 (0388045831): 14 reports of silent calls, robocalls, and suspicious activity from an Optus local number in Victoria.

Silent Calls and Robocall Reports for 03 8804 5831

The number 03 8804 5831 (also written as 0388045831) has attracted 14 community reports over several months, with a distinct pattern of silent calls and automated voicemails. Two contributors specifically reported robocall and silent call tactics, while others describe missed calls with no message, unresponsive connections, and an evasive caller that disconnects or claims to be "not in service" when called back.

What stands out is the inconsistency: some callers reach voicemail, others hang up silently, and repeated callback attempts often result in a "not in service" message. This behaviour is typical of numbers used in callback scams or automated dialling campaigns designed to identify active phone numbers for later targeting.

What Callers from 03 8804 5831 Do

Contributors report several distinct behaviours from 0388045831:

• Silent calls that ring but disconnect without speaking - one contributor answered to find the line went quiet
• Robocall voicemails with a recorded female voice (reported at 7 PM)
• A creepy voicemail targeting a child's phone, asking something about being "under or over 58" - an unusual and concerning approach
• Telemarketing or scam voicemail mentioning a draw or prize offer
• Numbers that appear disconnected when called back, yet continue to initiate outbound calls

The voicemail asking a child about an age threshold is particularly suspicious and suggests potential targeting of minors or data-gathering for downstream scams.

Call Patterns and Report Timeline

Community reports for 03 8804 5831 span from October 2024 to March 2026, with no concentrated spike in recent months. Most reports are of missed calls (8 out of 14), followed by answered calls (4), and voicemails (3). The breakdown shows:

• Uncertain or unidentified intent: 5 reports
• Suspicious activity: 3 reports
• Scam classification: 3 reports
• Nuisance calls: 2 reports
• Spam or telemarketing: 1 report

The robocall was logged at 7 PM, and one recent missed call (March 2026) was flagged as spam by the phone's built-in caller detection. The pattern suggests ongoing automated dialling rather than a coordinated scam campaign, though the targeting of a minor's phone is a red flag.

What to Do If You Receive a Call from 03 8804 5831

If 03 8804 5831 contacts you, follow these steps:

• Do not: Answer if you don't recognise the number, return the call, or engage with any voicemail requests
• Do: Let it go to voicemail, block the number immediately, and flag it as spam in your phone's call settings
• If targeted: Do not respond to questions about your age, location, or personal details. If the call targets a child, save the voicemail and contact your carrier
• If called repeatedly: Contact your mobile provider (Optus, in this case) to report the number and request additional call filtering

Silent calls and robocalls are often used to test whether a number is active. Once identified, your number may be sold to other scammers or subjected to follow-up phishing attempts. Blocking 0388045831 prevents further contact.

What to Do If You Receive a Voicemail from 03 8804 5831

If a voicemail from this number reaches your inbox:

• Do not: Call back, click any links mentioned, or provide information in response
• Do: Delete the voicemail, block the number, and report it as spam via your phone's voicemail settings
• If it targets a minor: Save the voicemail as evidence and report it to your carrier and the Australian Communications and Media Authority (ACMA)
• Forward to authorities: If the message requests unusual information (age brackets, personal details), forward the voicemail details to Scamwatch at scamwatch.gov.au

How to Report 03 8804 5831

If you've received calls or voicemails from 03 8804 5831 (0388045831), you can report this number through official channels:

• ACMA (Australian Communications and Media Authority): Report unwanted calls and robocalls at acma.gov.au. ACMA tracks patterns across multiple reports and can take enforcement action against persistent offenders
• Scamwatch: If the calls involve scam tactics, submit a report at scamwatch.gov.au with details of what was requested or claimed
• Do Not Call Register: Register your number at donotcall.gov.au to reduce telemarketing calls. If 03 8804 5831 is a telemarketing number breaching the register, ACMA can investigate
• Your mobile provider: Contact Optus directly to report the number and request call filtering or blocking assistance
• Reverseau: Add your own report to this number's community profile to help other Australians identify the caller and pattern

Frequently Asked Questions