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312-421 PHONE NUMBERS

The 312-421-XXXX area code prefix is located in Chicago, Illinois including Northbrook, Wheeling and was originally put into service on February 4th 1994. Run a search and find out who's calling you now.

Recently Reported Numbers

Not Available

Recently Unidentified numbers

312 area code numbers that might be spam, scams or that people have reported as unidentified callers

312-421-1134Level 3 Communications
312-421-9534Usa Mobility Wireless
312-421-9918Rcn Telecom Services Of Illinois
312-421-6043Ymax Communications Corp.
312-421-2800Cellco Partnership DBA Verizon Wireless
312-421-8863Ameritech Illinois
312-421-5407Ameritech Illinois
312-421-1880Ameritech Illinois
312-421-9819Cellco Partnership DBA Verizon Wireless
312-421-7866Ameritech Illinois
312-421-5881Ameritech Illinois
312-421-4505AT&T; Local
312-421-9102Ameritech Illinois
312-421-6662T-mobile Usa
312-421-5159Tw Telecom Of Illinois LLC
312-421-9583Cellco Partnership DBA Verizon Wireless
312-421-6907Ameritech Illinois
312-421-8694Cellco Partnership DBA Verizon Wireless

Most searched numbers

Cell
All Time This Month
312-421-1807 First seen 2014-07-14 312-421-9386 First seen 2016-03-15
312-421-3708 First seen 2014-06-20 312-421-1807 First seen 2017-12-01
312-421-7817 First seen 2012-04-01 312-421-6147 First seen 2018-08-14
312-421-7817 First seen 2012-09-20 312-421-7817 First seen 2015-10-13
312-421-2806 First seen 2016-01-03 312-421-9192 First seen 2019-03-08
Landline
All Time This Month
312-421-5235 First seen 2017-04-18 312-421-9052 First seen 2011-05-06
312-421-9420 First seen 2012-07-18 312-421-3043 First seen 2011-05-02
312-421-3043 First seen 2017-11-11 312-421-1676 First seen 2014-08-23
312-421-7368 First seen 2012-07-06 312-421-6443 First seen 2010-12-29
312-421-5235 First seen 2016-02-23 312-421-4332 First seen 2010-04-30

Cities With coverage

CITY LIST
Chicago
Hinsdale
La Grange Park
Northbrook
Roselle
Wheeling