Who called or texted from this number? See reports, caller information and recent activity.
Also written as (866) 580-1390, 866 580 1390, or +18665801390
This phone number has been flagged by our community as potentially dangerous. Exercise extreme caution if you receive calls from this number. Consumers have filed 1 complaint about this number with the Federal Communications Commission. The FCC most often categorizes these as "Live Voice".
2 people have already reported it.
Quick rate:
Recent reports describe callers claiming to be Optimum technical support after a service appointment is scheduled. One September 2026 account says Optimum corporate confirmed the line is not a company number. Other posts describe overseas-sounding follow-ups that already know a technician visit was booked. Official Optimum support numbers published by the company do not match this callback.
Optimum tech support impersonation around scheduled visits
From the FCC's Consumer Complaints database — official government data, filed separately from the FTC.
iPhone: Phone app → Recents → tap (i) → Block this Caller
Android: Phone app → tap the number → three-dot menu → Block number
You can also register at donotcall.gov to cut down on legal telemarketing.
If you believe this number is involved in illegal activity, you can file a complaint with the Federal Trade Commission.
Report to FTCThis number may also appear as:
The fastest way to find out who owns 866-580-1390 is other people who got the same call. Leave a report describing what the caller said, and the next person searching "who called me from 866-580-1390" will have your answer. Need to take action now? Open the step-by-step blocking instructions above, or open the FTC reporting instructions to file an official complaint about a scam or unwanted robocall.
