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.

3125034003 3125034008 3125034002 3125034007 3125034000 3125034005 3125034009 3125034004 3125034001 3125034006 3125034013 3125034018 3125034012 3125034017 3125034010 3125034015 3125034019 3125034014 3125034011 3125034016 3125034023 3125034028 3125034022 3125034027 3125034020 3125034025 3125034029 3125034024 3125034021 3125034026 3125034033 3125034038 3125034032 3125034037 3125034030 3125034035 3125034039 3125034034 3125034031 3125034036 3125034043 3125034048 3125034042 3125034047 3125034040 3125034045 3125034049 3125034044 3125034041 3125034046 3125034053 3125034058 3125034052 3125034057 3125034050 3125034055 3125034059 3125034054 3125034051 3125034056 3125034063 3125034068 3125034062 3125034067 3125034060 3125034065 3125034069 3125034064 3125034061 3125034066 3125034073 3125034078 3125034072 3125034077 3125034070 3125034075 3125034079 3125034074 3125034071 3125034076 3125034083 3125034088 3125034082 3125034087 3125034080 3125034085 3125034089 3125034084 3125034081 3125034086 3125034093 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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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