Clearly, these calls appear to be spoofed spam attempts that leave no voicemail and often trigger carrier warnings. The brief, silent rings and the “number not in service” reply when you call back are classic signs of caller ID manipulation used by fraudsters to hide their real source. Never return the call, especially if the number shows up as potential spam on your provider’s screener. Use your phone’s built‑in block feature or a third‑party app to reject future attempts, and report the number to your carrier or the FTC. Staying cautious and avoiding engagement is the safest routine.
When I attempted to call back, I received a message stating that the number was not in service, suggesting that the original number was spoofed
They called, but didn't leave a voicemessage, and Xfinity screener said it was Potential Spam
I think this might be related to Tijuana research or somthing.
A call was placed, but no voicemail was left.
