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: EGVGILIFDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-416 A Chicago Zone 01-Wabash IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-453 A Chicago Zone 01-Wabash IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-486 A Chicago Zone 01-Calumet IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-577 A Chicago Zone 01-Wabash IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 A Chicago Zone 01-Wabash IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-803 A Chicago Zone 01-Wabash IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-821 A Chicago Zone 01-Superior IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-873 A Chicago Zone 01-Canal IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
331-212 A Aurora IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
331-237 A Naperville IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
331-702 A Naperville IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-203 A Hinsdale IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-239 A Geneva IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-282 A Lombard IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-300 A Naperville IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-383 A Oswego IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-477 A Bensenville IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-518 A Aurora IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-589 A Elmhurst IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-644 A Bensenville IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-656 A Lombard IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-672 A Roselle IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-861 A Hinsdale IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-874 A Downers Grove IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-944 A Downers Grove IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-945 A Geneva IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-994 A Roselle IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
630-998 A Geneva IL 7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      

Last updated: Mon, 24 May 2021 01:28:43 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.