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.

3126034003 3126034008 3126034002 3126034007 3126034000 3126034005 3126034009 3126034004 3126034001 3126034006 3126034013 3126034018 3126034012 3126034017 3126034010 3126034015 3126034019 3126034014 3126034011 3126034016 3126034023 3126034028 3126034022 3126034027 3126034020 3126034025 3126034029 3126034024 3126034021 3126034026 3126034033 3126034038 3126034032 3126034037 3126034030 3126034035 3126034039 3126034034 3126034031 3126034036 3126034043 3126034048 3126034042 3126034047 3126034040 3126034045 3126034049 3126034044 3126034041 3126034046 3126034053 3126034058 3126034052 3126034057 3126034050 3126034055 3126034059 3126034054 3126034051 3126034056 3126034063 3126034068 3126034062 3126034067 3126034060 3126034065 3126034069 3126034064 3126034061 3126034066 3126034073 3126034078 3126034072 3126034077 3126034070 3126034075 3126034079 3126034074 3126034071 3126034076 3126034083 3126034088 3126034082 3126034087 3126034080 3126034085 3126034089 3126034084 3126034081 3126034086 3126034093 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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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