Lookup Area Code 312, Central Office & Exchange Code 378

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The area code indicates the regional location of the phone number. According to NANP, there are 405 area codes in North America.

Of these, 326 are in the US, 42 are in Canada, 17 are non-geographic virtual number, and 20 are others(mostly Caribbean).

The number of area codes is different for each area, in the future, the area with the most phone number users will have more area codes.

312378 is phone number first 6-digit, in the full phone number 312378xxxx, 312 is the Area Code, 378 is the Central Office & Exchange Code, xxxx is the subscriber number.

All North American phone numbers are in a three-part format.

Determine the phone number format, it can accurately lookup phone number information.

According to area code 312, determine the regional location

State: Illinois

Region: Illinois

Center City: Chicago

Area Code: 312 Area Code

State: Illinois

Center City: Chicago

Phone Used: (312) 378-

Primary City: Chicago, IL

Owned Company: Usa Mobility Wireless

County: Cook

Owned Type: Cell Number

Owned Carrier: Usa Mobility Wireless, Inc.

Counties: Cook County

Full Zip Code: 60603 (100%)

State & Region & County & City & Location map with Area Code

Too many area codes, map size limit, all area codes may not be displayed, only major area codes.

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312378 is the first 6-digit of the phone number, it can only lookup the regional location.

Lookup a phone number, the number must be complete. The full phone number is 10-digit, 312378-xxxx, 312 is the area code, 378 is the central office number, telephone exchange code, the last four digits, xxxx is the subscriber number, real phone users number.

Below is the complete, (312)378-xxxx active phone numbers, contains used, unused, and possibly deregistered phone numbers.

3123780003 3123780008 3123780002 3123780007 3123780000 3123780005 3123780009 3123780004 3123780001 3123780006 3123780013 3123780018 3123780012 3123780017 3123780010 3123780015 3123780019 3123780014 3123780011 3123780016 3123780023 3123780028 3123780022 3123780027 3123780020 3123780025 3123780029 3123780024 3123780021 3123780026 3123780033 3123780038 3123780032 3123780037 3123780030 3123780035 3123780039 3123780034 3123780031 3123780036 3123780043 3123780048 3123780042 3123780047 3123780040 3123780045 3123780049 3123780044 3123780041 3123780046 3123780053 3123780058 3123780052 3123780057 3123780050 3123780055 3123780059 3123780054 3123780051 3123780056 3123780063 3123780068 3123780062 3123780067 3123780060 3123780065 3123780069 3123780064 3123780061 3123780066 3123780073 3123780078 3123780072 3123780077 3123780070 3123780075 3123780079 3123780074 3123780071 3123780076 3123780083 3123780088 3123780082 3123780087 3123780080 3123780085 3123780089 3123780084 3123780081 3123780086 3123780093 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Above active phone number (312)378-xxxx list, from the telephone operator number database. Phone Lookuper does not provide number identification services. If you have any questions about this information, welcome to contact us.


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