- Suspicious
- Scam
- Spam
- Uncertain
08 6385 7716 (0863857716) WA number: 6 reports of silent calls, robocalls with dead air, and callback scam patterns. Symbio Networks carrier.
Silent Call and Robocall Reports for 08 6385 7716
Six contributors have reported calls from 08 6385 7716 (also written as 0863857716) with a consistent pattern of silent calls and robocalls. Three reports specifically describe receiving silence or dead air when answering, while others note brief robotic farewells followed by immediate disconnection. The number is allocated to Symbio Networks in Western Australia as a local service.
One contributor identified this as a classic callback scam tactic, where callers use automated systems to dial numbers and detect which ones are active before targeting them for follow-up scam or spam calls. This type of sniffer call typically results in a spike of unwanted contact in the days following initial detection.
What Callers from 08 6385 7716 Do
When contributors answered calls from 0863857716, they experienced brief interactions followed by immediate hangup. One report described hearing only silence after answering, described as creepy by the contributor. Another noted receiving a robotic voice saying goodbye before the line went dead. A third report documented repeated calls from 08 6385 7716 with the same pattern of silence then robotic farewell.
One contributor who received a missed call from this number recognised the behaviour as a sniffer call, designed to verify the line is active rather than attempt any actual conversation. This pattern suggests the number may be part of an automated callback detection system used to build lists of active phone numbers for later targeting.
Call Patterns and Timing
Reports of calls from 08 6385 7716 span from early February to late February 2026, with activity concentrated in early morning and mid-morning hours. The most recent report (25 February) describes the caller hanging up faster when the contributor picked up, suggesting the automated system detected an answer and disconnected. Earlier reports from mid-February documented multiple calls over consecutive days, with 13 February and 12 February reports separated by just one day.
One contributor noted receiving callback scam calls from various interstate landline numbers at a rate of one to two per day, with this Symbio Networks number fitting the same pattern. The contributor attributed the pattern to systematic number-testing across batches of potential targets.
What to Do If You Receive a Call from 08 6385 7716
If 08 6385 7716 calls you:
- Do not: Answer if you don't recognise the number, return the call, or engage if you do answer and hear silence
- Do: Let it go to voicemail, block the number immediately on your phone, and if it persists after blocking, enable enhanced call filtering
- Important: Do not return missed calls from this number, as callback scams rely on recipients calling back into automated systems
- If you answer by accident: Hang up immediately without speaking, which prevents confirmation your line is active
Silent calls and robocalls are often used to build lists of active numbers. By not engaging, you reduce the likelihood of being targeted by follow-up scam attempts from this or related numbers.
How to Report 08 6385 7716
Several Australian resources can help you formally report this number:
- ACMA (Australian Communications and Media Authority): Report unwanted calls at acma.gov.au - this is the primary regulator for Australian telecommunications
- Scamwatch: If you believe this is part of a scam pattern, report at scamwatch.gov.au
- Do Not Call Register: Register at donotcall.gov.au to opt out of telemarketing calls (though this number's activity suggests automated callback testing rather than traditional telemarketing)
- Your phone carrier: Contact Symbio Networks or your service provider to report the number and request additional blocking
- Reverseau: Contribute your experience with 08 6385 7716 to help other Western Australians identify this number
Help others by sharing your experience with (08) 6385 7716!
WRITE A REVIEWRatings Distribution
What Our Users Reviewed
Kept calling and hung up faster when I picked up
All I heard was dead air, creepy
Keeps calling, get silence then robotic farewell
Pointless call, just said goodbye then hung up
Sniffer call, just to see if you'll answer, for later call-back. Marked as a spam call so it has been reported before, and searched before here. Fits the pattern of spam and scam calls I've been getting for years; some random interstate landline number, one of two per day on days they call. Also being from Symbio networks is further proof as all the scam and spam calls I've received are from that carrier for months now.
No idea who it was, just said goodbye and hung up
Help others by sharing your experience with (08) 6385 7716!
WRITE A REVIEWFrequently Asked Questions
What does a sniffer call from 08 6385 7716 mean?
A sniffer call is an automated call designed to detect whether a phone number is active and monitored. When you answer 0863857716, the system confirms your line is live and may add it to a list for future scam or spam campaigns. Contributors reported this pattern with 08 6385 7716, where callers would hang up immediately upon detecting an answer.
Why do I hear silence or a robotic voice from 0863857716?
The silence or brief robotic farewell from 08 6385 7716 indicates an automated callback detection system rather than a real person. These systems dial numbers rapidly and use silence or pre-recorded messages to test whether the line is answered by a human or voicemail. Contributors described it as creepy dead air or robotic goodbyes.
Should I call back 08 6385 7716 if I missed a call?
No. Do not return calls to 08 6385 7716. This number's pattern of sniffer calls suggests it's part of a callback scam system. Returning the call may connect you to an automated system or expose you to follow-up scam attempts. One contributor specifically noted this fits classic callback scam behaviour.
Why is 0863857716 calling repeatedly?
The repeated calls from 08 6385 7716 indicate an automated dialling system testing multiple numbers in sequence. Contributors reported receiving calls from this Symbio Networks number alongside other interstate spam calls at a rate of one to two per day, suggesting systematic batch testing rather than targeting of a specific individual.
What should I do if 08 6385 7716 keeps calling after I block it?
If 0863857716 or related numbers continue after blocking, enable enhanced call filtering on your phone (available on most modern devices), report the number to ACMA at acma.gov.au, and contact your carrier Symbio Networks directly. One contributor noted these calls pattern with other scam activity, so reporting builds evidence of coordinated campaigns.
Can I be sure 08 6385 7716 is a scam or just a nuisance call?
Based on six community reports, 0863857716 displays the behaviour of an automated callback detection system rather than a direct scam attempt. However, these sniffer calls typically precede follow-up scam or spam campaigns. The presence of silent calls and robotic voices indicates automation, and one contributor flagged it as part of a months-long pattern of scam calls from similar interstate numbers on the Symbio Networks carrier.