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
206-206 A Seattle WA STTLWAWB36Z  674      
206-206 2 Seattle WA STTLWAWB36Z  674   2023-04-02   
206-206 4 Seattle WA STTLWAWB36Z  674   2023-04-02   
206-206 5 Seattle WA STTLWAWB36Z  674   2023-04-02   
206-206 6 Seattle WA STTLWAWB36Z  674   2023-04-02   
206-206 7 Seattle WA STTLWAWB36Z  674   2023-04-02   
213-602 A Los Angeles: DA 01 CA LSANCAJWKMD  730      
213-602 0 Los Angeles: DA 01 CA LSANCAJWKMD  730   2022-09-17   
213-602 1 Los Angeles: DA 01 CA LSANCAJWKMD  730   2022-09-17   
213-602 3 Los Angeles: DA 01 CA LSANCAJWKMD  730   2022-09-17   
216-888 A Montrose (Cuyahoga) OH CLEVOHEKX0X  320      
216-888 8 Montrose (Cuyahoga) OH CLEVOHEKX0X  320   2023-03-17   
313-604 A Detroit Zone 1 MI SFLDMIMKJMD  340      
313-604 0 Detroit Zone 1 MI SFLDMIMKJMD  340   2023-03-20   
314-636 A Oakville MO STLSMOGZTMD  520      
314-636 0 Oakville MO STLSMOGZTMD  520   2023-04-29   
314-636 1 Oakville MO STLSMOGZTMD  520   2023-04-29   
332-258 A New York City Zone 01 NY NYCMNYZRXDX  132      
332-258 0 New York City Zone 01 NY NYCMNYZRXDX  132   2022-03-21   
346-627 A Houston Suburban TX HSTNTXJAX7X  560      
346-627 0 Houston Suburban TX HSTNTXJAX7X  560   2023-04-23   
469-259 0 Dallas TX DLLSTX97XEX  552   2022-10-10   
469-259 1 Dallas TX DLLSTX97XEX  552   2022-10-10   
470-847 A Atlanta GA ATLNGAMQXEX  438      
470-847 0 Atlanta GA ATLNGAMQXEX  438   2021-11-07   
516-917 7 Cold Spring Harbor NY   132   2024-02-23   
557-222 A St Louis MO STLSMOGZTMD  520      
557-222 2 St Louis MO STLSMOGZTMD  520   2023-06-18   
628-789 A San Francisco: Central DA CA SNJUCACLHMD  722      
628-789 1 San Francisco: Central DA CA SNJUCACLHMD  722   2022-11-16   
656-214 A Tampa Central FL TAMSFLDEXIX  952      
656-214 0 Tampa Central FL TAMSFLDEXIX  952   2023-04-10   
689-303 A Orlando FL ORLDFL60XKY  45806      
689-303 0 Orlando FL ORLDFL60XKY  45806   2023-04-10   
720-843 2 Denver CO DNVRCO26XWX  656   2022-07-26   
720-844 A Denver CO DNVRCO26XWX  656      
720-844 1 Denver CO DNVRCO26XWX  656   2021-03-11   
720-967 A Denver CO DNVRCO26XWX  656      
720-967 0 Denver CO DNVRCO26XWX  656   2022-11-21   
720-967 1 Denver CO DNVRCO26XWX  656   2022-11-21   
720-967 2 Denver CO DNVRCO26XWX  656   2022-11-21   
720-967 3 Denver CO DNVRCO26XWX  656   2022-11-21   
720-967 4 Denver CO DNVRCO26XWX  656   2022-11-21   
720-994 0 Denver CO DNVRCO26XWX  656   2023-01-15   
720-994 1 Denver CO DNVRCO26XWX  656   2023-01-15   
726-238 A San Antonio TX SNANTXCAXIZ  566      
726-238 0 San Antonio TX SNANTXCAXIZ  566   2023-04-23   
771-223 A Washington Zone 1 DC WASHDC12UMD  236      
771-223 0 Washington Zone 1 DC WASHDC12UMD  236   2023-04-20   
786-927 A Miami FL MIAUFLWSX2X  46017      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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