02 8271 4840 - 0282714840: Threatening SIM Card Voicemails

• Suspicious
• Scam

02 8271 4840 (0282714840) receives reports of threatening voicemails claiming SIM cards will be marked. Contributors report robocall threats demanding callback.

Threatening SIM Card Messages from 02 8271 4840

Two contributors have reported receiving threatening voicemails from 02 8271 4840 (also written as 0282714840), a local NSW number allocated to Optus Networks. Both reports describe similar intimidating messages left on voicemail claiming the recipient's SIM card would be "marked" if they fail to call back.

The voicemails appear designed to create urgency and fear, pressuring recipients into returning the call to an unknown number. This is a common tactic used in callback scams, where the threat itself is designed to manipulate victims into initiating contact.

What Callers from 02 8271 4840 Are Saying

Both voicemails from 0282714840 contained the same core threat: "SIM CARD WILL BE MARKED if they can't get through." The message implies a consequence (SIM card marking or blocking) without explaining what triggered the supposed issue or who is making the threat.

One contributor received a voicemail stating "they couldn't get through" and warned the SIM card would be marked if contact wasn't re-established. The phrasing is deliberately vague - it doesn't specify which organisation is calling, what the alleged issue is, or what "marking" a SIM card actually means. This ambiguity is intentional, designed to confuse and frighten recipients into calling back without verification.

Report Details and Timing

The two reports came through voicemail channel on different dates (28 February and 6 March 2026), suggesting 02 8271 4840 may be making repeated robocall attempts to different numbers. Contributors did not engage with the calls - both allowed them to go to voicemail, which is the appropriate response.

Both reports reference the same threatening language about SIM cards, indicating a coordinated or automated campaign using consistent scripting. The robocall nature suggests this may be an automated system rather than individual caller dialling.

What to Do If You Receive a Call from 02 8271 4840

If 02 8271 4840 calls you:

• Do not: Return the call, engage with the message, or provide any information if you do answer
• Do not: Believe claims about SIM card marking - this is not a standard telecommunications process
• Do: Let the call go to voicemail if you don't recognise the number
• Do: Verify independently by contacting Optus directly on their official number (1300 137 897) if you have genuine concerns about your account
• Do: Block 0282714840 if you receive repeat calls
• Do: Never initiate outbound calls to numbers from threatening voicemails

What to Do If You Receive a Voicemail from 02 8271 4840

Threatening voicemails like those from 02 8271 4840 should not be engaged with:

• Do not: Call back the number provided in the voicemail
• Do not: Feel pressured by threats about your SIM card or account
• Do: Delete the voicemail after noting the number
• Do: Contact your service provider (Optus) directly using the official number on your bill or their website if you have account concerns
• Do: Report the number to ACMA as spam/scam

How to Report 02 8271 4840

If you receive threatening calls from 0282714840, report this activity to Australian authorities:

• Report to the Australian Communications and Media Authority (ACMA) at acma.gov.au - they investigate unwanted calls and robocalls
• Report to Scamwatch at scamwatch.gov.au with details of the threat and date received
• Contact Optus directly on 1300 137 897 to report the number is impersonating telecommunications services
• Add 02 8271 4840 to your phone's blocked list to prevent future calls
• Share your experience on Reverseau to help other Australians identify this number and protect the community

Frequently Asked Questions