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: UNWDMNXUDS0

Remotes:

Switch Switch name Switch type
ASHBMNXARS7  ASHBY  DCO 
BWVYMNXBRS6  BROWNS VALLEY  DCN 
DLTNMNXDRS5  DALTON  DCO 
ERHRMNXERS8  ERHARD  DCO 
MAINMNXMRS4  MAINE  DCO 
RTHSMNXRRS0  ROTHSAY  C5 
VNNGMNXVRS7  VINING  DCO 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
218-826 A Underwood MN 1450 PARK REGION MUTUAL TEL. CO. 636      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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