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.

Switch: DWGVILMCPS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-262 A Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-262 9 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-291 3 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-12-12   
312-291 4 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-12-12   
312-361 9 Chicago Zone 01-Monroe IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-10-27   
312-428 3 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-02-14   
312-448 2 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-06-07   
312-488 2 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2009-10-31   
312-488 3 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2009-10-31   
312-488 4 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2009-10-31   
312-488 8 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-02-14   
312-489 2 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-02-14   
312-526 6 Chicago Zone 01-Canal IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-10-27   
312-528 7 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2011-01-05   
312-529 7 Chicago Zone 01-Franklin IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-02-14   
312-546 7 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2009-04-18   
312-546 8 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2009-04-18   
312-546 9 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2009-04-18   
312-554 6 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2011-01-05   
312-582 4 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2011-01-05   
312-589 7 Chicago Zone 01-Canal IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2011-01-05   
312-610 4 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 5 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 6 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 7 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-674 7 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2011-01-05   
312-929 0 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2011-06-12   
312-945 5 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2009-10-12   
312-983 3 Chicago Zone 01-Wabash IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2011-01-30   
312-999 A Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-999 1 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-12-02   
312-999 4 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-12-02   
312-999 5 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-12-02   
312-999 6 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-12-02   
708-667 4 Chicago Zone 03-Newcastle IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2006-08-25   
708-667 5 Chicago Zone 03-Newcastle IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2006-08-25   
773-260 0 Chicago Zone 10-Pullman IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-11-04   
773-260 1 Chicago Zone 10-Pullman IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-11-04   
773-437 6 Chicago Zone 09-South Chicago IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2007-05-13   
773-437 8 Chicago Zone 09-South Chicago IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2007-05-13   
773-526 7 Chicago Zone 08-Portsmouth IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2006-08-12   
773-634 7 Chicago Zone 04-Humboldt IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-08-12   
773-634 8 Chicago Zone 04-Humboldt IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-08-12   
773-765 5 Chicago Zone 02-Edgewater IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-10-27   
773-943 5 Chicago Zone 02-Edgewater IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-11-02   
773-943 6 Chicago Zone 02-Edgewater IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-11-02   
872-213 2 Chicago Zone 02-Edgewater IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-10-27   
872-213 3 Chicago Zone 02-Edgewater IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-10-27   
872-213 4 Chicago Zone 02-Edgewater IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-10-27   
872-888 A Chicago Zone 02-Edgewater IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
872-888 1 Chicago Zone 02-Edgewater IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-11-16   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.