how can I search the apple id for a specific imei number
how can I search to see what apple id has logged into my lost phone with the imei number
iPhone X
I don't know of any way to do that.
What does your Cellular Service Provider tell you about the phone?
Have you logged into icloud.com to see what Find Phone provides?
ASC - Late 2012 Mac mini, macOS 10.14.6; Watch, series 5 GPS/cellular, watchOS 6.2; iPad Air 2, ipadOS 13.5.1; iPhone 8+, iOS 13.5.1; TV 4th Gen, tvOS 13.4.6; HomePods, audioOS 13.4.6 and Airport Express w/ Airplay 2