Now You can check for free if Your device is on Blacklisted in USA.
Verify that the IMEI is Clean or stolen. If you are going to buy a used phone, make sure that it has not been reported as lost or stolen and the IMEI number is not blacklisted.

Check IMEI below and get result in few seconds:
USA carriers blacklist check


Sample result:
IMEI;3548580983xxxxx
Model Number;IPHX64GBGRY1
Description;IPH X GRAY 64 SGL
Poc Swap;False
Uicc_Sku;CZ2124LWQ
Contract Status; Pending Balance
IMSI;310120080709193
ESN Hex;35485809838xxx
ESN;089393357708619xxx
ICCID;89011202000280380400
Account Status;(Phone owner account ID mismatch FED not met)