- Suspicious
04 0213 3138 (0402133138) flagged for silent call. Caller connected then hung up without speaking. Optus mobile number.
Silent Call Report for 04 0213 3138
One contributor has reported receiving a silent call from 04 0213 3138 (also written as 0402133138). The caller connected to the answered call but remained silent, then disconnected. This type of behaviour is often associated with robocall systems testing active phone numbers or callback scams probing for engagement.
The number is allocated to Optus Mobile, a major Australian telecommunications provider. Silent calls from mobile numbers can indicate either automated dialling systems or deliberate probing tactics used by scammers to confirm a number is active and monitored by a real person.
What Silent Calls from 04 0213 3138 Indicate
Silent calls serve multiple purposes in scam and nuisance call operations. Callers may use silence to test whether a number answers, verify that a person rather than voicemail picks up, or trigger automatic callback responses. Some silent callers are automated systems that fail to connect to an agent when you answer.
The single report for 0402133138 describes the caller connecting, remaining silent, and then hanging up. This pattern is common with:
- Robocall systems testing number validity before launching full campaigns
- Callback scams checking for active, monitored numbers
- Automated dialling infrastructure with agent connection delays
What to Do If You Receive a Call from 04 0213 3138
If 04 0213 3138 calls you:
- Do not: Remain on the line waiting for the caller to speak, say your name or confirm you're there, or call the number back
- Do: Hang up immediately, block the number in your phone settings, and note the date and time of the call
- Remember: Legitimate organisations always speak when you answer. Silence is a red flag.
Do not return the call to 04 0213 3138 or investigate who is calling. Silent calls followed by disconnection are rarely from genuine businesses. If you're curious about the caller, use a reverse phone lookup service like Reverseau instead.
How to Report 04 0213 3138
If you receive further calls from 04 0213 3138 or 0402133138, report them to Australian communications authorities:
- ACMA (Australian Communications and Media Authority): acma.gov.au - Report nuisance calls and silent calls
- Scamwatch: scamwatch.gov.au - If the call appears part of a scam pattern
- Reverseau: Contribute your report to help other Australians identify this number. Even a single report helps build community awareness.
If you receive a silent call and the number calls back repeatedly, this escalates from nuisance to harassment. Document each call with date and time, then contact your phone provider (Optus in this case, since the number is allocated to Optus Mobile) to request blocking or investigation.
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WRITE A REVIEWFrequently Asked Questions
What does it mean if 04 0213 3138 calls and says nothing?
Silent calls from 04 0213 3138 (0402133138) typically indicate either an automated robocall system testing whether your number is active, or a callback scam probing for engagement. Hang up immediately and block the number. Do not try to speak or confirm you're there.
Why would someone call from 0402133138 and stay silent?
Scammers use silent calls to verify that 0402133138 reaches a real person who answers their phone. This information is valuable to them because it confirms the number for targeting in future scams. Some silent calls are also from faulty automated systems, but either way, you should block 04 0213 3138.
Should I call back 04 0213 3138 to find out who called?
No. Do not return calls to 04 0213 3138 or 0402133138. Calling back could connect you to scammers or trigger further unwanted contact. If you need to identify the caller, use Reverseau's reverse phone lookup or check community reports instead.
Is a silent call from 04 0213 3138 a scam?
Silent calls from 0402133138 are suspicious and often precede scam campaigns. While a single silent call may not be a direct scam attempt, it indicates the number is being used for unsolicited calling. Block 04 0213 3138 and report it to ACMA if calls continue.
How do I block 04 0213 3138 on my phone?
On most Australian phones, you can block 04 0213 3138 (0402133138) by opening the call log, selecting the number, and choosing 'Block' or 'Add to Blocked Contacts'. For iPhones, use the 'Block this Caller' option; for Android, use 'Block number'. You can also enable 'Do Not Disturb' to filter unknown calls.
Should I report the silent call from 0402133138 to anyone?
Yes. Report 04 0213 3138 to ACMA (acma.gov.au) and consider contributing to Reverseau so other Australians know about this number. If you receive repeated silent calls, notify your phone provider (Optus, in this case, since the number is on their network) and request investigation or blocking.