- Uncertain
- Suspicious
02 3820 3420 (0238203420) flagged for suspicious calls and SMS. Contributors report hang-ups and follow-up contact patterns suggesting potential scam activity.
Suspicious Activity Reported for 02 3820 3420
Two contributors have flagged 02 3820 3420 (also written as 0238203420) for suspicious behaviour patterns. The reports describe a coordinated contact approach combining SMS and voice calls within a short timeframe, which aligns with known scam tactics designed to build false familiarity before a high-pressure pitch.
The number is allocated as a local service in NSW through Symbio Networks Pty Ltd. Both incidents occurred within a two-week window, suggesting either active dialling or a targeted contact list.
What Contributors Experienced with 02 3820 3420
One contributor received a call from 02 3820 3420 that terminated immediately without any message or explanation. The hang-up pattern, where the caller disconnects upon connection, is commonly reported as a lead-testing tactic - callers verify that a number is active and a real person answered before proceeding with a scam attempt.
A separate contributor received an SMS from 0238203420 containing only the word "hello", followed by a phone call approximately 15 minutes later. This two-step contact method (SMS primer followed by voice call) is a recognised pattern in scam operations, as the initial SMS may lower a recipient's guard before the actual pitch attempt occurs on the follow-up call.
Report Patterns and Timing
Both reports came through different channels - one via answered call, one via SMS - suggesting the operation may test multiple contact methods against the same number. The 15-minute gap between the SMS and follow-up call indicates deliberate sequencing rather than accidental duplicate dialling.
The reports are recent (March and April 2026), with no historical data available, making it unclear whether 02 3820 3420 represents ongoing scam activity or isolated incidents.
What to Do If You Receive a Call from 02 3820 3420
If 02 3820 3420 calls you:
- Do not: Answer if you don't recognise the number, engage in conversation, or provide any personal information
- Do: Let it go to voicemail, note the exact time and any details, block the number immediately
- Do: Be cautious if a follow-up SMS arrives shortly before or after the call - this coordinated pattern warrants extra vigilance
- Do: Verify the caller's identity through official channels (contact the organisation directly using a number from their official website, never using a number provided by the caller)
What to Do If You Receive an SMS from 02 3820 3420
If 0238203420 sends you an SMS:
- Do not: Reply to the message, click any links, or call the number back
- Do: Report the SMS as spam by forwarding it to 0429 999 888 (ACMA's SMS spam reporting service)
- Do: Block the number immediately in your phone's contacts
- Do: If a voice call arrives shortly after, treat it with heightened suspicion
How to Report 02 3820 3420
If you've experienced suspicious contact from 02 3820 3420 or 0238203420, report it through these official Australian channels:
- Scamwatch: Visit scamwatch.gov.au to report scam attempts and view current scam alerts
- ACMA (Australian Communications and Media Authority): Lodge a complaint at acma.gov.au about unwanted calls and SMS
- Local police: If threatened or if financial details were compromised, contact your local police station or call 131 444
- Reverseau: Share your experience with this number to help warn other Australians
Help others by sharing your experience with (02) 3820 3420!
WRITE A REVIEWRatings Distribution
What Our Users Reviewed
Rang then hung up, nothing said
Received SMS saying hello, then a follow up call 15 minutes later, likely scam
Help others by sharing your experience with (02) 3820 3420!
WRITE A REVIEWFrequently Asked Questions
Is 02 3820 3420 definitely a scam?
Based on two community reports, 02 3820 3420 shows patterns consistent with scam operations - specifically the hang-up followed by a separate SMS and follow-up call sequence. However, with only two reports, it's not definitively confirmed as active scam infrastructure. The coordinated contact pattern (SMS then call 15 minutes later) is suspicious enough to warrant blocking and reporting. If you receive contact from 0238203420, treat it with caution.
What does it mean if 02 3820 3420 rings and hangs up?
When 02 3820 3420 calls and terminates without speaking, it typically indicates the caller is testing whether the number is active and answered by a real person. Scammers use this 'lead verification' tactic to identify working phone numbers before launching targeted scam campaigns. If 0238203420 hangs up on you, block it immediately and monitor your phone for follow-up contact attempts via call or SMS.
Why would I get an SMS saying 'hello' from 0238203420?
An SMS containing only 'hello' from 0238203420 may serve as a primer to make you feel you initiated contact or know the sender, lowering your guard before a follow-up sales pitch or scam attempt. The contributor who received this message from 02 3820 3420 was called 15 minutes later, suggesting the SMS was deliberately timed to prepare the target. Do not engage or reply to such messages.
Should I call 02 3820 3420 back if they called me?
No. Do not call 02 3820 3420 back if they call you first. Returning calls to unknown numbers - especially those linked to hang-ups or suspicious SMS activity like 0238203420 - can confirm your number to scammers and activate billing scams on premium-rate lines. If the call was legitimate, the caller or their organisation will try again or leave a voicemail.
Is 02 3820 3420 a legitimate Symbio Networks number?
The number 02 3820 3420 is allocated to Symbio Networks Pty Ltd as a local NSW service, but this allocation does not verify legitimacy. Scammers frequently spoof or hijack legitimate provider numbers, or purchase old numbers from inactive accounts. The suspicious behaviour reported (hang-ups, sequential SMS and calls) suggests misuse regardless of the provider allocation. Contact Symbio Networks directly using an independently verified number if you need to confirm.
What should I do if I already gave information to a caller from 0238203420?
If you shared personal information with someone claiming to call from 02 3820 3420, take these steps: contact your bank or financial institution immediately to monitor for fraudulent activity, change passwords for online accounts if any login details were disclosed, place a fraud alert with credit reporting agencies, and report the incident to your local police and Scamwatch at scamwatch.gov.au. The coordinated contact pattern from 0238203420 suggests a professional operation, so swift action is important.