07 2143 5520 - 0721435520: Robocall Reports

• Suspicious
• Uncertain

07 2143 5520 (0721435520): Community reports of automated robocalls with no message, ending with 'Goodbye'. Queensland local number.

Robocall Reports for 07 2143 5520

Two contributors have reported receiving robocalls from 07 2143 5520 (also written as 0721435520), a Queensland local number. Both reports describe the same behaviour: an automated voice system that answers the call and immediately says 'Goodbye' without providing any message, offer, or request.

This pattern is characteristic of callback detection or number validation robocalls, where automated systems dial numbers and disconnect when a person answers. The 0721435520 number is allocated to Symbio Networks, a local service provider in Queensland.

What Callers from 07 2143 5520 Say

Contributors who picked up calls from 07 2143 5520 report an identical experience: an automated voice simply says 'Goodbye' and the call ends. There is no introduction, no organisation name, no sales pitch, and no request for information. One contributor noted the robocall came through on an answered call, while another reported the same automated 'Goodbye' response.

The brevity and consistency of this message across multiple reports suggests this is not a targeted scam or sales campaign, but rather an automated system testing whether the number is active and monitored by a real person.

Report Patterns and Timing

Both reports of 0721435520 came within a 48-hour window in late November 2025, indicating a cluster of activity. Both contributors answered the call and were able to confirm the robocall behaviour directly. At least one contributor took action to block the number after the first contact.

What to Do If You Receive a Call from 07 2143 5520

If 07 2143 5520 calls you:

• Do: Let unexpected calls go to voicemail in future, block the number if it calls repeatedly, and use your phone's native call blocking feature
• Do not: Return the call or engage with any follow-up attempts
• Do: Check your voicemail if a message is left to determine if the caller identifies themselves

How to Report 07 2143 5520

If you receive unwanted calls from 07 2143 5520, you can report the robocall activity to Australian communications authorities:

• Report to the Australian Communications and Media Authority (ACMA) at acma.gov.au - they investigate unwanted calls and robocalls
• Register your number with the Do Not Call Register at donotcall.gov.au to reduce telemarketing and robocall contact
• Report the number on Reverseau to contribute to community safety data
• If the robocalls are persistent, you may also report to ReportCyber at cyber.gov.au if you suspect scam or fraud activity

Contributing Your Experience

If you have received calls from 07 2143 5520, sharing your report on Reverseau helps other Queensland residents identify this number and understand its behaviour. Your contribution strengthens the community database and helps others make informed decisions about answering unknown calls.

Frequently Asked Questions