- Suspicious
Community report for 0423 877 442 (0423877442): Caller impersonated Telstra despite recipient not being a customer. Potential scam.
Telstra Impersonation Report for 0423 877 442
One contributor has reported receiving a call from 0423 877 442 (also written as 0423877442) in which the caller claimed to represent Telstra. The recipient immediately flagged this as suspicious because they are not a Telstra customer. This mismatch between the claimed company and the recipient's actual service provider is a classic warning sign of impersonation scams.
The call came from a mobile number allocated to Optus Mobile, which adds another layer of inconsistency. Legitimate Telstra outbound calls typically originate from Telstra-allocated numbers or known Telstra service centres, not random mobile numbers. The contributor's quick identification of the red flag suggests the impersonation attempt was not convincing.
What Callers from 0423 877 442 Claim
According to the community report, the caller from 0423877442 explicitly stated they were calling on behalf of Telstra. No details were provided about what the caller claimed Telstra was contacting them about, but impersonation calls typically involve requests for account verification, payment information, or urgent action on a fabricated issue.
The fact that the recipient does not use Telstra services makes this call particularly suspicious. Scammers often target people with false claims about services they don't have, knowing the recipient may be momentarily confused or off-guard.
Report Details and Timing
This report was submitted on 8 January 2026 at 11:12 AM. The call was answered by the recipient, allowing them to hear the impersonation claim directly. One report is a limited dataset, but it confirms that 0423 877 442 has been used for at least one impersonation attempt.
What to Do If You Receive a Call from 0423 877 442
If 0423877442 calls you:
- Do not: Provide personal information, account details, passwords, or banking information
- Do not: Confirm your identity or agree to any actions requested
- Do not: Allow the caller to put you on hold or transfer you to another line
- Do: Hang up immediately if the caller claims to be from a company you don't use
- Do: Verify independently by calling the company directly using a number from their official website or your billing documents
- Do: Block 0423 877 442 if the call repeats
Impersonation scams rely on urgency and authority. By hanging up and verifying through official channels, you eliminate the scammer's advantage.
How to Report 0423 877 442
If you receive an impersonation call from this number, report it to relevant Australian authorities:
- Scamwatch: Report the call via scamwatch.gov.au - include the date, time, what was claimed, and what happened
- ACMA (Australian Communications and Media Authority): File a complaint about the number at acma.gov.au
- Local police: If you believe you've been defrauded, lodge a report with your state police
- Reverseau: Contribute your experience to help other Australians identify 0423 877 442
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WRITE A REVIEWRatings Distribution
What Our Users Reviewed
claimed to be from Telstra, I don't even use them, red flags
Help others by sharing your experience with 0423 877 442!
WRITE A REVIEWFrequently Asked Questions
Why would a scammer call claiming to be from Telstra if I don't use Telstra?
Scammers often use a spray-and-pray approach, calling random numbers with various company names. If you fall for it, they'll pivot the conversation based on information you provide. The call to this number from 0423 877 442 suggests the scammer didn't pre-screen their target list. Your quick recognition that you don't use Telstra was the correct first defence.
How can I verify if 0423 877 442 is actually a Telstra number?
Legitimate Telstra numbers are publicly listed on telstra.com.au or on your Telstra bill. 0423 877 442 (0423877442) is allocated to Optus Mobile, not Telstra. If a caller claims to be from Telstra but calls from 0423 877 442, they are impersonating. Always hang up and call Telstra's official number to verify any urgent claims.
What information might the caller from 0423 877 442 have been trying to get?
Telstra impersonators typically seek banking details, credit card numbers, passwords, or personal identification information. Some claim there's a billing issue, security breach, or service cancellation requiring immediate action. The contributor's report doesn't specify what follow-up request was made, only that the initial impersonation claim was flagged as false.
Should I block 0423 877 442 on my phone?
Yes. If you receive a call from 0423877442 attempting impersonation, blocking is appropriate. It prevents repeated contact from this number. However, scammers frequently use spoofed or multiple numbers, so blocking one number alone won't stop all impersonation attempts. Report it to Scamwatch and ACMA as well.
Is it safe to call back 0423 877 442?
No. Do not call back 0423877442. Callback scams exploit the call-back mechanism to charge premium rates or to confirm your number is active, leading to more scam calls. If you need to reach Telstra, use the official number on their website or your bill, not the number that called you.
Why would an Optus mobile number be used for a Telstra impersonation scam?
Scammers often use VoIP services or compromised mobile accounts that don't reflect the company they're impersonating. The allocation to Optus Mobile doesn't mean the caller works for Optus - it simply means the number is registered to that network. This mismatch is another red flag that the call from 0423 877 442 was fraudulent.