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.

Assumption, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
217-226 A ASMPILXCRS0  1037 ILLINOIS CONSOLIDATED TEL. CO. 976      
217-910 A MTONILXC1MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 976      
217-910 0 MTONILXCX7X  073H TELNYX LLC 976      
217-910 3 MTONILXC1MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 976      
217-910 4 TYVLIL35DS0  197H COMPUTER TECHNIQUES, INC. - IL 976      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.