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: LNRKILXADS0

Remotes:

Switch Switch name Switch type
CHWKILXARS0  CHADWICK  DC1 
COLTILXARS0  COLETA  DCL 
SHNNILXARS0  SHANNON  DC1 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-493 A Lanark IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-493 0 Lanark IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-493 1 Lanark IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-493 2 Lanark IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-493 6 Lanark IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-493 8 Lanark IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-493 9 Lanark IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.