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These sites let you check if a phone is blacklisted / locked
https://swappa.com/imei https://swappa.com/esn https://sickw.com/ On an iPhone, go to Settings, General, About. Near the bottom, about 6 lines under the Wifi MAC Address, if it says "no SIM restrictions" then it is unlocked. If it says something else, it may be locked to a different carrier. I don't know of a way to find out which carrier without just testing to see if one will work. Phone number lookup https://www.area-codes.com/search.asp - Allows lookup of area code prefixes by city/state/zipcode https://aruljohn.com/phonelookup.pl https://www.carrierlookup.com/ http://www.checkesnfree.com/index.html https://www.imei.info/ |