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: ALEDILXDDS0

Remotes:

Switch Switch name Switch type
ALPHILXDRS0  ALPHA  DC1 
ALXSILXDRS0  ALEXIS  DC1 
ELIZILXDRS0  ELIZA  DC1 
JOY ILXDRS0  JOY  DC1 
KTBGILXDRS0  KEITHSBURG  DC1 
LTYRILXDRS0  LITTLE YORK  DC1 
NBTNILXDRS0  NEW BOSTON  DC1 
NHNDILXDRS0  NORTH HENDERSON  DC4 
OQWKILXDRS0  OQUAWKA  DC1 
RIO ILXDRS0  RIO  DCL 
SETNILXDRS0  SEATON  DC1 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
309-582 A Aledo IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.