Shane L., founder of CheckESNFree.com, says his website is the worlds only free, instant, online, multi-carrier ESN checker. He says he started it nearly 4 years ago in an attempt to help combat cellphone fraud.
CheckESNFree.com says it will provide free and instant online ESN check solutions in the United States and Canada. They offer visitors limited free ESN checks against all of their sources, including the new US and Canadian National IMEI Blacklist databases.
Cellphone theft has grown rampant, with more than 40 percent of robberies in New York involving smartphones. Verizon Wireless, AT&T, Sprint Nextel and T-Mobile will now block phones from being used again if they’re reported stolen.
By the end of November 2013, the four carriers will combine their databases so that “the vast majority” of US cellphone users will be covered. The new databases will block the IMEI number, a unique identifier that stays in the phone regardless of the SIM card being used.
Older ESN is currently mainly used with CDMA phones. The newer International Mobile Station Equipment Identity (IMEI) is a unique number to identify mobile phones, usually found printed inside the battery compartment of the phone.
The original Electronic Serial Number uniquely identifies mobile devices. Each time a call is placed, the ESN is automatically transmitted to the base station so the wireless carrier’s mobile switching office can check the call’s validity. International Mobile Subscriber Identity (IMSI) is used in any mobile network that interconnects with other networks.
CTIA says, “While the GSM and CDMA databases are important, consumers also play a key role in protecting their information and preventing smartphone theft. By using passwords or PINs, as well as remote wiping capabilities, consumers can help to dry up the aftermarket for stolen devices.