Supported Models : 4,4S,5,5c,5s,6,6 plus,7, 7 PLus

Supported IMEI Type  :    Clean, active, inactive and financed IMEI only
Not Supported IMEI Type : Blacklisted/Stolen iPhone,Fraud,IMEI Not Recognised 

How to check T-Mobile USA   Clean, active, inactive and financed IMEI only??

http://www.t-mobile.com/verifyimei.aspx

Tmobile verifyimei link with Supported Result