So i have an Android phone that i’m willing to sell to pay off a bill (struggling wagecuck at retail store here) but someone asked if it’s “unlocked” and considering that i have never personally used the phone, i didn’t know how to answer that question

Now i know that there are websites to check if an IMEI is blacklisted or not, but i can’t find any reliable website that would tell me if the phone is unlocked nationwide or locked by specific carriers. Does anyone know a good IMEI site checker?