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: MTVRWAXXDS1

Remotes:

Switch Switch name Switch type
BGLKWAXXRS0  BIG LAKE  RSC 
BURLWAXXRS0  BURLINGTON  RSC 
CNWYWAXXRS1  CONWAY  RSC 
SWLYWAXARS2  SEDRO WOOLLEY  RSS 
SWLYWAXXRS2  SEDRO WOOLLEY  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
360-336 A Mount Vernon WA 4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
360-416 A Mount Vernon WA 4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
360-419 A Mount Vernon WA 4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
360-424 A Mount Vernon WA 4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
360-428 A Mount Vernon WA 4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
360-757 A Mount Vernon WA 4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
360-848 A Mount Vernon WA 4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
360-853 A Mount Vernon WA 4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
360-856 A Mount Vernon WA 4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
360-873 A Mount Vernon WA 4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      

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

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