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.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
206-636 A Seattle WA STTLWAWB09Z  674      
206-636 0 Seattle WA   674   2018-08-09   
240-642 A Washington Zone 10 MD VINNVACB7MD  236      
240-642 0 Washington Zone 10 MD   236   2018-09-16   
240-789 A Washington Zone 10 MD VINNVACB7MD  236   2021-09-24   
240-789 2 Washington Zone 10 MD   236   2021-09-24   
267-535 8 Philadelphia Zone 1 PA   228   2021-10-22   
267-764 A Philadelphia Zone 1 PA PHLAPAFGXTX  228      
267-764 0 Philadelphia Zone 1 PA   228   2018-08-27   
332-251 2 New York City Zone 01 NY   132   2021-10-11   
385-270 A Salt Lake City UT WVCYUT148MD  660      
385-270 0 Salt Lake City UT   660   2018-08-06   
602-857 A Phoenix AZ PHNXAZ28ZMD  666      
602-857 0 Phoenix AZ   666   2018-08-09   
612-398 A Twin Cities MN MPLSMNCDX3X  628      
612-398 0 Twin Cities MN   628   2018-08-11   
646-960 A New York City Zone 01 NY NYCMNYBXTMD  132      
646-960 0 New York City Zone 01 NY   132   2018-08-10   
720-923 A Denver CO DNVTCOZIAMD  656      
720-923 0 Denver CO   656   2018-10-06   
813-467 A Tampa Central FL TAMSFLDEUMD  952      
813-467 0 Tampa Central FL   952   2018-08-10   
820-200 A Thousand Oaks CA LSANCARCY0X  730      
820-200 0 Thousand Oaks CA   730   2018-08-09   
857-347 A Boston MA BSTPMALLVMD  128      
857-347 0 Boston MA   128   2018-08-27   
857-465 2 Boston MA   128   2021-08-20   
862-327 A Newark NJ NWRKNJMDXMD  224      
862-327 0 Newark NJ   224   2018-09-17   
862-361 0 Newark NJ   224   2021-08-20   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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