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.

3126030003 3126030008 3126030002 3126030007 3126030000 3126030005 3126030009 3126030004 3126030001 3126030006 3126030013 3126030018 3126030012 3126030017 3126030010 3126030015 3126030019 3126030014 3126030011 3126030016 3126030023 3126030028 3126030022 3126030027 3126030020 3126030025 3126030029 3126030024 3126030021 3126030026 3126030033 3126030038 3126030032 3126030037 3126030030 3126030035 3126030039 3126030034 3126030031 3126030036 3126030043 3126030048 3126030042 3126030047 3126030040 3126030045 3126030049 3126030044 3126030041 3126030046 3126030053 3126030058 3126030052 3126030057 3126030050 3126030055 3126030059 3126030054 3126030051 3126030056 3126030063 3126030068 3126030062 3126030067 3126030060 3126030065 3126030069 3126030064 3126030061 3126030066 3126030073 3126030078 3126030072 3126030077 3126030070 3126030075 3126030079 3126030074 3126030071 3126030076 3126030083 3126030088 3126030082 3126030087 3126030080 3126030085 3126030089 3126030084 3126030081 3126030086 3126030093 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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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