Lookup Area Code 312, Central Office & Exchange Code 503

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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.

312503 is phone number first 6-digit, in the full phone number 312503xxxx, 312 is the Area Code, 503 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) 503-

Primary City: Chicago, IL

Owned Company: Broadwing Communications

County: Cook

Owned Type: Landline

Owned Carrier: Broadwing Communications, LLC - IL

Counties: Cook County

Full Zip Code: 60611 (98%), 60603 (2%)

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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312503 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, 312503-xxxx, 312 is the area code, 503 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)503-xxxx active phone numbers, contains used, unused, and possibly deregistered phone numbers.

3125030003 3125030008 3125030002 3125030007 3125030000 3125030005 3125030009 3125030004 3125030001 3125030006 3125030013 3125030018 3125030012 3125030017 3125030010 3125030015 3125030019 3125030014 3125030011 3125030016 3125030023 3125030028 3125030022 3125030027 3125030020 3125030025 3125030029 3125030024 3125030021 3125030026 3125030033 3125030038 3125030032 3125030037 3125030030 3125030035 3125030039 3125030034 3125030031 3125030036 3125030043 3125030048 3125030042 3125030047 3125030040 3125030045 3125030049 3125030044 3125030041 3125030046 3125030053 3125030058 3125030052 3125030057 3125030050 3125030055 3125030059 3125030054 3125030051 3125030056 3125030063 3125030068 3125030062 3125030067 3125030060 3125030065 3125030069 3125030064 3125030061 3125030066 3125030073 3125030078 3125030072 3125030077 3125030070 3125030075 3125030079 3125030074 3125030071 3125030076 3125030083 3125030088 3125030082 3125030087 3125030080 3125030085 3125030089 3125030084 3125030081 3125030086 3125030093 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Above active phone number (312)503-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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