312 Area Code

Any phone callers having an area code of 312 can be found here. All the cities within this nation with a 201 area code can be known when you take advantage of this page. You must not resort to other choices because this particular page can provide all the help that you need.

You have to remember that you can trace an unknown caller by determining the city and the country where it came. The good thing about it is that you can trace whether a caller used a landline or a mobile device. You can get all the information about a number starting with the area code 312 here.

Area Code 312 Details
CountryCook
State/ProvinceUnknown
Major CityChicago
Prefix Company Usage
312 201 Ameritech Illinois Landline
312 202 Ameritech Illinois Landline
312 203 New Cingular Wireless Pcs,... Cell Phone
312 204 Ameritech Illinois Landline
312 205 Allegiance Telecom, Inc. Il Landline
312 206 New Cingular Wireless Pcs,... Cell Phone
312 207 Ameritech Illinois Landline
312 208 New Cingular Wireless Pcs,... Cell Phone
312 209 Cellco Partnership Dba Veri... Cell Phone
312 211 Unknown Unknown
312 212 Ameritech Illinois Landline
312 213 New Cingular Wireless Pcs,... Cell Phone
312 214 Ameritech Illinois Landline
312 216 Unknown Landline
312 217 United States Cellular Corp... Landline
312 218 New Cingular Wireless Pcs,... Cell Phone
312 220 Ameritech Illinois Landline
312 221 Sprint Spectrum L.p. Cell Phone
312 222 Ameritech Illinois Landline
312 223 Ameritech Illinois Landline
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