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: 217 [Rate centres in NPA 217] [Dial plan for NPA 217]

NXX: 427

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-427 A Catlin IL CTLNILCBRS0  9329 ILLINOIS BELL TEL CO 370      
217-427 1 Catlin IL CHMPILCPXUX  939H COMMIO, LLC 370      
217-427 2 Catlin IL CTLNILCBRS0  9329 ILLINOIS BELL TEL CO 370      
217-427 3 Catlin IL CHMPILLW0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 370      
217-427 5 Catlin IL CTLNILCBRS0  9329 ILLINOIS BELL TEL CO 370      
217-427 6 Catlin IL CHMPILCPDS1  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 370      
217-427 7 Catlin IL CHMPILCPXOX  508J CENTURYLINK COMMUNICATIONS, LLC 370      
217-427 8 Catlin IL CHMPILLW0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 370      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.