Lookup Area Code 312, Central Office & Exchange Code 603

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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.

312603 is phone number first 6-digit, in the full phone number 312603xxxx, 312 is the Area Code, 603 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) 603-

Primary City: Chicago, IL

Owned Company: Ameritech Illinois

County: Cook

Owned Type: Landline

Owned Carrier: Ameritech Illinois

Counties: Cook County

Full Zip Code: 60602 (93%), 60608 (7%)

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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312603 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, 312603-xxxx, 312 is the area code, 603 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)603-xxxx active phone numbers, contains used, unused, and possibly deregistered phone numbers.

3126031003 3126031008 3126031002 3126031007 3126031000 3126031005 3126031009 3126031004 3126031001 3126031006 3126031013 3126031018 3126031012 3126031017 3126031010 3126031015 3126031019 3126031014 3126031011 3126031016 3126031023 3126031028 3126031022 3126031027 3126031020 3126031025 3126031029 3126031024 3126031021 3126031026 3126031033 3126031038 3126031032 3126031037 3126031030 3126031035 3126031039 3126031034 3126031031 3126031036 3126031043 3126031048 3126031042 3126031047 3126031040 3126031045 3126031049 3126031044 3126031041 3126031046 3126031053 3126031058 3126031052 3126031057 3126031050 3126031055 3126031059 3126031054 3126031051 3126031056 3126031063 3126031068 3126031062 3126031067 3126031060 3126031065 3126031069 3126031064 3126031061 3126031066 3126031073 3126031078 3126031072 3126031077 3126031070 3126031075 3126031079 3126031074 3126031071 3126031076 3126031083 3126031088 3126031082 3126031087 3126031080 3126031085 3126031089 3126031084 3126031081 3126031086 3126031093 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Above active phone number (312)603-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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