Lookup Area Code 312, Central Office & Exchange Code 400

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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.

312400 is phone number first 6-digit, in the full phone number 312400xxxx, 312 is the Area Code, 400 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) 400-

Primary City: Chicago, IL

Owned Company: American Messaging (am)

County: Cook

Owned Type: Cell Number

Owned Carrier: American Messaging (am), Inc.

Counties: Cook County

Full Zip Code: 60654, 60661

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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Submit a survey statistics service about area code 312, Central Office & Exchange Code 400

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How do you know Phone Lookuper?

312400 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, 312400-xxxx, 312 is the area code, 400 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)400-xxxx active phone numbers, contains used, unused, and possibly deregistered phone numbers.

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Above active phone number (312)400-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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