- Scam
Community reports for 03 7057 2617 (0370572617): Two contributors flagged suspicious activity including silent calls and non-existent number claims after Optus verification.
Suspicious Activity Reports for 03 7057 2617
Two contributors have reported suspicious behaviour from 03 7057 2617 (also written as 0370572617), a local Victorian number registered to Symbio Networks. The reports describe unusual calling patterns and verification issues that suggest potential scam activity.
One contributor characterised a call from 03 7057 2617 as a straight-up scam attempt. A second contributor received two calls from 0370572617 within an hour, with the first call leaving them hanging on the line before an immediate callback. When this contributor contacted Optus to verify the number, they were told the number no longer exists or was not active, raising concerns about spoofing or number manipulation tactics.
What Callers from 03 7057 2617 Do
The reported behaviour from 03 7057 2617 differs from typical spam patterns. Rather than aggressive sales pitches or impersonation claims, one contributor experienced a silent or near-silent call that prompted a rapid callback within the same hour. This back-to-back calling pattern combined with the Optus report that 0370572617 doesn't appear as an active number suggests possible number spoofing or caller ID manipulation.
The timing of the second call from 03 7057 2617 (12:38 on the reported date) indicates callers may be operating during business hours, which is consistent with many scam operations attempting to catch people available at their desks.
Report Patterns and Verification Issues
What makes these reports about 0370572617 notable is the verification problem. When the affected contributor rang Optus to confirm whether 03 7057 2617 was a legitimate business line, they were informed the number doesn't exist as an active service. This mismatch between receiving calls from the number and its apparent non-existence in carrier records is a red flag for number spoofing, where scammers mask their real origin with a fake or deactivated Victorian number.
Both reports came in relatively recently (late February and early March 2026), suggesting ongoing activity from this number or its spoofed variant.
What to Do If You Receive a Call from 03 7057 2617
If 03 7057 2617 calls you:
- Do not: Engage with silent calls, answer unknown numbers multiple times, or provide any personal information
- Do: Let it go to voicemail on the first call, block the number immediately, and verify any claims independently by contacting the organisation directly using a publicly listed phone number
- Do: Contact your phone provider (Optus, Telstra, Vodafone, etc.) to confirm whether 0370572617 is an active number before trusting any follow-up calls
- Do: Report the number to ACMA if you believe it's being used for scam purposes, especially if calls resume after blocking
How to Report 03 7057 2617
If you receive suspicious calls from 03 7057 2617 or 0370572617, report your experience to help protect other Australians:
- Report to ACMA (the Australian Communications and Media Authority) at acma.gov.au - include the date, time, and what the caller said or did
- Report to Scamwatch at scamwatch.gov.au if the call involved fraud or deception
- Contact your phone provider's fraud team to report the number and ask them to verify whether 0370572617 is an active service
- Add your report to Reverseau to contribute community intelligence about 03 7057 2617
- If the caller mentioned a specific organisation (bank, government agency, retailer), report to that organisation's fraud team directly with the phone number and time of call
Help others by sharing your experience with (03) 7057 2617!
WRITE A REVIEWRatings Distribution
What Our Users Reviewed
Straight-up scam call
Called at 12:38 and just left me hanging, called back within hour and Optus said number doesn't exist anymore
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WRITE A REVIEWFrequently Asked Questions
What does it mean when Optus says 03 7057 2617 doesn't exist?
When a phone provider confirms that 0370572617 is not an active service but you're still receiving calls from that number, it strongly suggests the caller is using number spoofing - a technique where scammers disguise their real phone number with a fake one. The number 03 7057 2617 may be deactivated, non-existent, or belong to someone unrelated to the caller. This is a common scam tactic to avoid identification and make the call appear legitimate.
Why did the caller from 03 7057 2617 call back so quickly?
The rapid callback within an hour of the first call from 0370572617 suggests automated dialling or a targeted calling campaign rather than accidental contact. Scammers often use this pattern to catch people while they're thinking about the first call or to increase the likelihood of someone picking up on the second attempt. The initial silent/hanging call may have been designed to detect a live answer before routing to an agent.
Should I call 03 7057 2617 back if it's in my call history?
No. Do not return a call to 03 7057 2617 or 0370572617. If the number genuinely doesn't exist (as Optus confirmed in one report), returning the call could connect you to an unrelated person or service. If the number is being used for spoofing, calling back confirms your number is active and may result in more calls. Instead, block the number in your phone and move on.
Is 0370572617 a Symbio Networks customer service line?
The number 03 7057 2617 is registered to Symbio Networks Pty Ltd, a Victorian telecommunications provider. However, the fact that Optus could not verify it as an active service suggests either the number is no longer in use or someone may be spoofing a Symbio number. If you need to contact Symbio Networks, look up their official customer service number on their website rather than calling 0370572617 based on incoming calls.
What should I do if I already answered a call from 03 7057 2617?
If you answered but the call was silent or the caller hung up, you're likely safe - simply block 03 7057 2617 in your phone settings. If you spoke to someone and provided any personal information (name, address, bank details, Medicare number, etc.), contact your bank and relevant government agencies to report potential fraud. Monitor your accounts for suspicious activity. Report the incident to ACMA at acma.gov.au with the date and time of the call from 0370572617.
Could 03 7057 2617 be a legitimate business with spoofing problems?
While theoretically possible, the combination of silent calls and Optus's confirmation that 0370572617 doesn't exist as an active service makes this unlikely. Legitimate businesses don't typically make silent calls or use deactivated numbers. If you're concerned about a business legitimately trying to reach you, contact them directly using a phone number from their official website or official documentation - never using the number that called you.