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: NWLNMNXNDS0

Remotes:

Switch Switch name Switch type
BROTMNXBRS0  BROOTEN  RS 
DANBMNXDRS8  DANUBE  ORM 
IRNGMNXIRS2  IRVING  DS 
KRKHMNXKRS3  KERKHOVEN  RS 
MRDCMNXMRS9  MURDOCK  RS 
PENCMNXPRS6  PENNOCK  RS 
SEDNMNXSRS3  SEDAN  RS 
SNBGMNXSRS4  SUNBURG  RS 
TRRCMNXTRS3  TERRACE  RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date

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

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