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: TMPCILXADS0

Remotes:

Switch Switch name Switch type
HPPLILXERS1  HOOPPOLE  DC1 
THMSILXARS0  THOMAS (BUREAU)  DC1 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-438 A Tampico IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-438 0 Tampico IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-438 1 Tampico IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-438 2 Tampico IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-438 3 Tampico IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-438 4 Tampico IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-438 5 Tampico IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-438 6 Tampico IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-438 7 Tampico IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-438 9 Tampico IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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