Lookup Area Code 312, Central Office & Exchange Code 604

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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.

312604 is phone number first 6-digit, in the full phone number 312604xxxx, 312 is the Area Code, 604 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) 604-

Primary City: Chicago, IL

Owned Company: Xo Illinois

County: Cook

Owned Type: Landline

Owned Carrier: Xo Illinois, Inc.

Counties: Cook County

Full Zip Code: 60604 (21%), 60616 (21%), 60661 (21%), 60610 (14%), 60606 (7%), 60611 (7%), 60622 (7%)

State & Region & County & City & Location map with Area Code

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312604 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, 312604-xxxx, 312 is the area code, 604 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)604-xxxx active phone numbers, contains used, unused, and possibly deregistered phone numbers.

3126040003 3126040008 3126040002 3126040007 3126040000 3126040005 3126040009 3126040004 3126040001 3126040006 3126040013 3126040018 3126040012 3126040017 3126040010 3126040015 3126040019 3126040014 3126040011 3126040016 3126040023 3126040028 3126040022 3126040027 3126040020 3126040025 3126040029 3126040024 3126040021 3126040026 3126040033 3126040038 3126040032 3126040037 3126040030 3126040035 3126040039 3126040034 3126040031 3126040036 3126040043 3126040048 3126040042 3126040047 3126040040 3126040045 3126040049 3126040044 3126040041 3126040046 3126040053 3126040058 3126040052 3126040057 3126040050 3126040055 3126040059 3126040054 3126040051 3126040056 3126040063 3126040068 3126040062 3126040067 3126040060 3126040065 3126040069 3126040064 3126040061 3126040066 3126040073 3126040078 3126040072 3126040077 3126040070 3126040075 3126040079 3126040074 3126040071 3126040076 3126040083 3126040088 3126040082 3126040087 3126040080 3126040085 3126040089 3126040084 3126040081 3126040086 3126040093 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Above active phone number (312)604-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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