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.

3126039003 3126039008 3126039002 3126039007 3126039000 3126039005 3126039009 3126039004 3126039001 3126039006 3126039013 3126039018 3126039012 3126039017 3126039010 3126039015 3126039019 3126039014 3126039011 3126039016 3126039023 3126039028 3126039022 3126039027 3126039020 3126039025 3126039029 3126039024 3126039021 3126039026 3126039033 3126039038 3126039032 3126039037 3126039030 3126039035 3126039039 3126039034 3126039031 3126039036 3126039043 3126039048 3126039042 3126039047 3126039040 3126039045 3126039049 3126039044 3126039041 3126039046 3126039053 3126039058 3126039052 3126039057 3126039050 3126039055 3126039059 3126039054 3126039051 3126039056 3126039063 3126039068 3126039062 3126039067 3126039060 3126039065 3126039069 3126039064 3126039061 3126039066 3126039073 3126039078 3126039072 3126039077 3126039070 3126039075 3126039079 3126039074 3126039071 3126039076 3126039083 3126039088 3126039082 3126039087 3126039080 3126039085 3126039089 3126039084 3126039081 3126039086 3126039093 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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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