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.

OCN: 816C INTRADO COMMUNICATIONS, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
331-241 A Lombard IL CHCGILDTDS6  358      
331-241 0 Lombard IL   358   2018-12-14   
331-241 1 Lombard IL   358   2018-12-14   
331-241 2 Lombard IL   358   2018-12-14   
331-307 0 Lombard IL   358   2015-08-29   
630-376 7 Lombard IL   358   2018-06-17   
630-376 9 Lombard IL   358   2017-11-27   
630-489 A Lombard IL CHCGILDTDS6  358      
630-489 1 Lombard IL   358   2013-05-26   
630-489 4 Lombard IL   358   2013-05-26   
630-489 5 Lombard IL   358   2013-05-26   
630-489 9 Lombard IL   358   2010-06-20   
630-519 9 Lombard IL   358   2016-08-21   
630-652 5 Lombard IL   358   2016-08-21   
773-373 0 Chicago Zone 07-Oakland IL   358   2018-11-16   
872-244 2 Chicago Zone 07-Stewart IL   358   2013-02-22   
872-244 4 Chicago Zone 07-Stewart IL   358   2013-02-22   
872-244 5 Chicago Zone 07-Stewart IL   358   2013-02-22   
872-757 0 Chicago Zone 07-Stewart IL   358   2016-09-12   
872-757 3 Chicago Zone 07-Stewart IL   358   2017-07-13   
872-757 5 Chicago Zone 07-Stewart IL   358   2018-06-17   
872-757 6 Chicago Zone 07-Stewart IL   358   2018-11-16   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.