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.

3125032003 3125032008 3125032002 3125032007 3125032000 3125032005 3125032009 3125032004 3125032001 3125032006 3125032013 3125032018 3125032012 3125032017 3125032010 3125032015 3125032019 3125032014 3125032011 3125032016 3125032023 3125032028 3125032022 3125032027 3125032020 3125032025 3125032029 3125032024 3125032021 3125032026 3125032033 3125032038 3125032032 3125032037 3125032030 3125032035 3125032039 3125032034 3125032031 3125032036 3125032043 3125032048 3125032042 3125032047 3125032040 3125032045 3125032049 3125032044 3125032041 3125032046 3125032053 3125032058 3125032052 3125032057 3125032050 3125032055 3125032059 3125032054 3125032051 3125032056 3125032063 3125032068 3125032062 3125032067 3125032060 3125032065 3125032069 3125032064 3125032061 3125032066 3125032073 3125032078 3125032072 3125032077 3125032070 3125032075 3125032079 3125032074 3125032071 3125032076 3125032083 3125032088 3125032082 3125032087 3125032080 3125032085 3125032089 3125032084 3125032081 3125032086 3125032093 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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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