Lookup Area Code 312, Central Office & Exchange Code 904

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.

312904 is phone number first 6-digit, in the full phone number 312904xxxx, 312 is the Area Code, 904 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) 904-

Primary City: Chicago, IL

Owned Company: Ameritech Illinois

County: Cook

Owned Type: Landline

Owned Carrier: Ameritech Illinois

Counties: Cook County

Full Zip Code: 60603 (57%), 60606 (14%), 60610 (14%), 60661 (14%)

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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312904 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, 312904-xxxx, 312 is the area code, 904 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)904-xxxx active phone numbers, contains used, unused, and possibly deregistered phone numbers.

3129040003 3129040008 3129040002 3129040007 3129040000 3129040005 3129040009 3129040004 3129040001 3129040006 3129040013 3129040018 3129040012 3129040017 3129040010 3129040015 3129040019 3129040014 3129040011 3129040016 3129040023 3129040028 3129040022 3129040027 3129040020 3129040025 3129040029 3129040024 3129040021 3129040026 3129040033 3129040038 3129040032 3129040037 3129040030 3129040035 3129040039 3129040034 3129040031 3129040036 3129040043 3129040048 3129040042 3129040047 3129040040 3129040045 3129040049 3129040044 3129040041 3129040046 3129040053 3129040058 3129040052 3129040057 3129040050 3129040055 3129040059 3129040054 3129040051 3129040056 3129040063 3129040068 3129040062 3129040067 3129040060 3129040065 3129040069 3129040064 3129040061 3129040066 3129040073 3129040078 3129040072 3129040077 3129040070 3129040075 3129040079 3129040074 3129040071 3129040076 3129040083 3129040088 3129040082 3129040087 3129040080 3129040085 3129040089 3129040084 3129040081 3129040086 3129040093 3129040098 3129040092 3129040097 3129040090 3129040095 3129040099 3129040094 3129040091 3129040096 3129040103 3129040108 3129040102 3129040107 3129040100 3129040105 3129040109 3129040104 3129040101 3129040106 3129040113 3129040118 3129040112 3129040117 3129040110 3129040115 3129040119 3129040114 3129040111 3129040116 3129040123 3129040128 3129040122 3129040127 3129040120 3129040125 3129040129 3129040124 3129040121 3129040126 3129040133 3129040138 3129040132 3129040137 3129040130 3129040135 3129040139 3129040134 3129040131 3129040136 3129040143 3129040148 3129040142 3129040147 3129040140 3129040145 3129040149 3129040144 3129040141 3129040146 3129040153 3129040158 3129040152 3129040157 3129040150 3129040155 3129040159 3129040154 3129040151 3129040156 3129040163 3129040168 3129040162 3129040167 3129040160 3129040165 3129040169 3129040164 3129040161 3129040166 3129040173 3129040178 3129040172 3129040177 3129040170 3129040175 3129040179 3129040174 3129040171 3129040176 3129040183 3129040188 3129040182 3129040187 3129040180 3129040185 3129040189 3129040184 3129040181 3129040186 3129040193 3129040198 3129040192 3129040197 3129040190 3129040195 3129040199 3129040194 3129040191 3129040196 3129040203 3129040208 3129040202 3129040207 3129040200 3129040205 3129040209 3129040204 3129040201 3129040206 3129040213 3129040218 3129040212 3129040217 3129040210 3129040215 3129040219 3129040214 3129040211 3129040216 3129040223 3129040228 3129040222 3129040227 3129040220 3129040225 3129040229 3129040224 3129040221 3129040226 3129040233 3129040238 3129040232 3129040237 3129040230 3129040235 3129040239 3129040234 3129040231 3129040236 3129040243 3129040248 3129040242 3129040247 3129040240 3129040245 3129040249 3129040244 3129040241 3129040246 3129040253 3129040258 3129040252 3129040257 3129040250 3129040255 3129040259 3129040254 3129040251 3129040256 3129040263 3129040268 3129040262 3129040267 3129040260 3129040265 3129040269 3129040264 3129040261 3129040266 3129040273 3129040278 3129040272 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Above active phone number (312)904-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.