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: 631

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-631 A Monticello IL CHMPILLW0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 370      
217-631 0 Monticello IL CHMPILCPOMD  224C ONVOY, LLC 370      
217-631 1 Monticello IL   593K MCC TELEPHONY LLC 370      
217-631 2 Monticello IL CHMPILCPOMD  224C ONVOY, LLC 370      
217-631 3 Monticello IL CHMPILCPOMD  224C ONVOY, LLC 370      
217-631 4 Monticello IL CHMPILLW0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 370      
217-631 5 Monticello IL   624H ONVOY SPECTRUM, LLC 370      
217-631 6 Monticello IL CHMPILRAUMD  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 370      
217-631 7 Monticello IL CHMPILCPXOX  508J CENTURYLINK COMMUNICATIONS, LLC 370      
217-631 8 Monticello IL CHMPILCPOMD  224C ONVOY, LLC 370      
217-631 9 Monticello IL CHMPILCPDS1  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 370      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.