Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Chicago Zone 01-Wabash, IL

<< 1 2 3 4 5 6 7 8 9 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-351 4 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-351 5 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-351 6 CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2010-04-12   
312-351 7 CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2010-04-12   
312-351 8 CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2010-04-12   
312-351 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-06-23   
312-353 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-356 A CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-359 A LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
312-360 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-362 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-365 A LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
312-369 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-369 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-06-23   
312-369 1 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 2 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 3 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 4 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 5 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 6 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 7 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 8 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-370 A LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
312-375 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-385 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-06-23   
312-385 1 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 2 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 3 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 4 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 5 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 7 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 8 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-06-23   
312-386 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-386 0 ELGNILOTGT5  5562 METROPCS, INC. 358   2007-09-13   
312-386 1 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-386 2 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-386 3 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-386 4 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-386 5 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2011-08-06   
312-386 6 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2011-07-08   
312-386 7 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-09-26   
312-386 8 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2005-08-19   
312-386 9 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-387 A LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
312-389 A LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
312-390 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-391 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-393 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-400 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-401 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 1 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 2 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 3 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 4 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 5 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 6 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 7 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 8 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-402 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-06-23   
312-404 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-405 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-408 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-415 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-416 A EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-418 A LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
312-420 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-427 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-428 A CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-428 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-06   
312-428 1 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-06   
312-428 2 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2009-10-23   
312-428 3 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-02-14   
312-428 4 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2004-06-07   
312-428 5 CHCGIL24DS6  224C ONVOY, LLC 358   2009-09-04   
312-428 6 CHCGIL24DS6  224C ONVOY, LLC 358   2009-09-04   
312-428 7 CHCGIL24DS6  224C ONVOY, LLC 358   2009-09-04   
312-428 8 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-06   
312-428 9   224C ONVOY, LLC 358   2009-09-04   
312-431 A CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-435 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-447 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-447 0 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-447 1 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2011-01-14   
312-447 2 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2006-07-11   
312-447 3 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2006-07-11   
312-447 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-06-11   
312-447 5 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2006-07-11   
312-447 6 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2006-07-11   
312-447 7 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2006-07-11   
312-447 8 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2008-04-03   
312-447 9 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-09-25   
312-450 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-450 0 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-09-20   
312-450 1 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-06   
312-450 2 CHCGIL24DS6  224C ONVOY, LLC 358   2009-09-04   

<< 1 2 3 4 5 6 7 8 9 >>

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.