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: PDMTMOXXPS0

Remotes:

Switch Switch name Switch type
PASNMOXXRP0  PATTERSON  RP 
PASNMOXXRP1  PATTERSON  RP 
PDMTMOXXRP0  PIEDMONT  RP 
WSVLMOXARP0  WILLIAMSVILLE  RP 
WSVLMOXARP1  WILLIAMSVILLE  RP 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-523 A Piedmont MO 1885 WINDSTREAM MISSOURI, INC. 520      
573-523 9 Piedmont MO 1885 WINDSTREAM MISSOURI, INC. 520   2015-08-26   

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

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