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.

NPA: 773 [Rate centres in NPA 773] [Dial plan for NPA 773]

NXX: 705

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-705 A Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358      
773-705 0 Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-08-19   
773-705 1 Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-08-19   
773-705 2 Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-08-19   
773-705 3 Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-08-19   
773-705 4 Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-08-19   
773-705 5 Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-08-19   
773-705 6 Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-08-19   
773-705 7 Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-08-19   
773-705 8 Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-08-19   
773-705 9 Chicago Zone 10-Beverly IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-08-19   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.