Lookup Area Code 312, Central Office & Exchange Code 554

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.

312554 is phone number first 6-digit, in the full phone number 312554xxxx, 312 is the Area Code, 554 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) 554-

Primary City: Chicago, IL

Owned Company: Ameritech Illinois

County: Cook

Owned Type: Landline

Owned Carrier: Ameritech Illinois

Counties: Cook County

Full Zip Code: 60605 (42%), 60606 (25%), 60604 (21%), 60607 (5%), 60616 (4%), 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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312554 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, 312554-xxxx, 312 is the area code, 554 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)554-xxxx active phone numbers, contains used, unused, and possibly deregistered phone numbers.

3125540003 3125540008 3125540002 3125540007 3125540000 3125540005 3125540009 3125540004 3125540001 3125540006 3125540013 3125540018 3125540012 3125540017 3125540010 3125540015 3125540019 3125540014 3125540011 3125540016 3125540023 3125540028 3125540022 3125540027 3125540020 3125540025 3125540029 3125540024 3125540021 3125540026 3125540033 3125540038 3125540032 3125540037 3125540030 3125540035 3125540039 3125540034 3125540031 3125540036 3125540043 3125540048 3125540042 3125540047 3125540040 3125540045 3125540049 3125540044 3125540041 3125540046 3125540053 3125540058 3125540052 3125540057 3125540050 3125540055 3125540059 3125540054 3125540051 3125540056 3125540063 3125540068 3125540062 3125540067 3125540060 3125540065 3125540069 3125540064 3125540061 3125540066 3125540073 3125540078 3125540072 3125540077 3125540070 3125540075 3125540079 3125540074 3125540071 3125540076 3125540083 3125540088 3125540082 3125540087 3125540080 3125540085 3125540089 3125540084 3125540081 3125540086 3125540093 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Above active phone number (312)554-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.