- Suspicious
- Spam
- Unknown
03 8376 8481 (0383768481) linked to Symbio Networks in Victoria. Contributors report hang-up calls and callback lures, including a suspicious AGL impersonation voicemail.
Callback Lure Reports for 03 8376 8481
Three contributors have reported suspicious activity from 03 8376 8481 (also written as 0383768481), a Symbio Networks local service number registered in Victoria. The pattern centres on hang-up calls and callback lures designed to prompt return calls, combined with at least one impersonation attempt. One report specifically flagged a callback-lure tactic, where the caller hung up deliberately to encourage a return call.
The number is allocated to Symbio Networks Pty Ltd, a legitimate VoIP provider, but the reported activity suggests either network abuse or spoofing of this service provider's infrastructure.
What Callers from 03 8376 8481 Do
Contributors who answered calls from 03 8376 8481 report immediate hang-ups with no greeting or message. Two separate reports describe the same pattern: incoming call, silence or brief pause, then disconnection. This is consistent with callback-lure tactics where callers deliberately hang up to trigger curiosity and encourage return dialling.
One contributor received a voicemail claiming to be from AGL energy, but noted poor English quality and immediately identified it as spam. This suggests the number may be used for impersonation campaigns targeting utility customers. The combination of hang-up calls and a fake AGL message indicates coordinated activity rather than isolated misdials.
Report Patterns and Timing
The three reports span from 11 March to 19 March 2026. One call occurred today according to the contributor's report, indicating recent activity. Two of the three reports specifically describe answered calls that were hang-ups, while one was a voicemail left on the contributor's phone. The pattern suggests ongoing abuse of this Symbio Networks number rather than a one-off incident.
What to Do If You Receive a Call from 03 8376 8481
If 03 8376 8481 calls you:
- Do not: Return the call, as callback lures rely on you dialling back and potentially connecting to a premium or scam service
- Do not: Believe any voicemail claiming to be from AGL, banks, utilities, or government agencies without independently verifying the caller
- Do: Block the number immediately on your phone to prevent future calls
- Do: Let unknown calls go to voicemail if you don't recognise the number
- Do: If you receive a message claiming to be from AGL or another service, hang up and contact the organisation directly using the phone number on your bill or their official website
How to Report 03 8376 8481
If you've received calls from 03 8376 8481, report the activity to relevant Australian authorities:
- Report to ACMA (Australian Communications and Media Authority) at acma.gov.au - they investigate service provider abuse and callback lure scams
- If the call impersonated AGL or another service, report to Scamwatch at scamwatch.gov.au
- Block the number and report it as spam/nuisance on your phone
- Consider reporting to ReportCyber at cyber.gov.au if you believe it's part of a coordinated scam campaign
- Add your report to Reverseau so other Australians can check who called them from 0383768481
Help others by sharing your experience with (03) 8376 8481!
WRITE A REVIEWRatings Distribution
What Our Users Reviewed
Message claiming to be from AGL but poor English, reported as spam
Spam/hang-up caller from a SYMBIO NETWORKS number.
Another Symbio Networks hang-up caller
Help others by sharing your experience with (03) 8376 8481!
WRITE A REVIEWFrequently Asked Questions
What is a callback lure and why would someone use 03 8376 8481 for it?
A callback lure is when a scammer deliberately calls you and hangs up to make you curious and call back. When you dial 0383768481, you may be charged premium rates, connected to a recorded message, or transferred to a scammer. The contributors reporting 03 8376 8481 experienced this exact pattern - incoming hang-ups designed to prompt return calls.
Why did the voicemail from 03 8376 8481 claim to be from AGL?
Scammers use impersonation to build false trust. By claiming to be AGL (a major energy provider), the caller at 03 8376 8481 makes the message seem legitimate and urgent. One contributor noted poor English quality in the voicemail, a common red flag. AGL will never call you about bills via voicemail with poor English - always verify by calling AGL directly on the number on your bill.
Is Symbio Networks responsible for calls from 03 8376 8481?
Symbio Networks Pty Ltd is the registered provider for 0383768481, but the reported activity likely involves either network abuse (someone misusing the service) or spoofing (faking this number to hide their real identity). Report the abuse to ACMA so they can investigate whether Symbio Networks' security has been compromised.
I received a call from 03 8376 8481 and it hung up - should I call back?
No. Do not return any call to 03 8376 8481 or 0383768481. This is a callback-lure tactic. The caller deliberately hangs up hoping you'll be curious enough to ring back, potentially incurring charges or connecting you to a scam. Block the number instead.
How can I verify if a call really came from AGL?
If you receive a voicemail or call claiming to be from AGL but the English is poor or the number is 03 8376 8481, it's fake. Always verify independently: find AGL's official number on your energy bill, call that number directly, and ask if they tried to reach you. Never use a phone number from an unsolicited voicemail from 0383768481 or any unknown caller.
What should I do if I already called back 03 8376 8481?
If you called back 0383768481 and connected to something suspicious, do not provide any personal information. Hang up immediately. Check your phone bill for any unusual charges from this number. If you provided banking details, credit card information, or other sensitive data, contact your bank. Block 03 8376 8481 and report the activity to ACMA and Scamwatch.