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: WLSHLAXADS0

Remotes:

Switch Switch name Switch type
FNTNLAXARS1  FENTON  DCL 
LCSNLAXARS1  LACASSINE  DC1 
RONKLAXARS1  ROANOKE  DCL 
THWLLAXARS1  THORNWELL  DC1 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
337-734 A Welsh LA 0434 BRIGHTSPEED OF LOUISIANA, LLC 488      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.