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.

OCN: 0051 SHELCOMM

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
213-396 A Los Angeles: DA 02 CA BLPKCAAFCM0  730      
213-825 A Los Angeles: DA 01 CA BLPKCAAFCM0  730      
254-363 A Alexander TX DLLSTX97XAX  552      
254-365 A Carbon TX DLLSTX97XAX  552      
254-367 A Cisco TX DLLSTX97XAX  552      
254-648 A Ranger TX DLLSTX97XAX  552      
256-821 A Decatur AL HNVIALZH0MD  477      
256-823 A Huntsville AL HNVIALZH0MD  477      
310-690 A West Los Angeles CA BLPKCAAFCM0  730      
323-554 A Los Angeles: DA 06 CA BLPKCAAFCM0  730      
329-240 A Spring Valley NY   132   2025-10-31   
332-231 A New York City Zone 01 NY NYCRNYBB2MD  132      
341-255 A Oakland: Berkeley DA CA MLPTCAVPAMD  722   2024-11-01   
346-830 A Houston TX HSTNTXJAX7Z  560   2024-11-17   
346-836 A Sugar Land TX HSTNTXJAX7Z  560   2024-11-17   
346-838 A Highlands TX HSTNTXJAX7Z  560   2024-11-17   
363-214 A Nassau Zone 1 NY   132   2025-10-25   
369-220 A Sonoma CA MLPTCAVPAMD  722   2024-11-03   
369-221 A Santa Rosa CA MLPTCAVPAMD  722   2024-11-03   
412-570 A Pittsburgh Zone 1 PA FTHLPA020MD  234   2024-02-09   
424-412 A Inglewood CA BLPKCAAFCM0  730      
424-418 A Beverly Hills CA BLPKCAAFCM0  730      
430-248 A Greenville TX DLLSTX97XAX  552      
442-289 A Victorville: Victorville DA CA BLPKCAAFCM0  730      
442-299 A Victorville: Hesperia DA CA BLPKCAAFCM0  730      
469-572 A Dallas TX DLLSTX97XAX  552      
469-692 A Allen TX DLLSTX97XAX  552      
469-696 A McKinney TX DLLSTX97XAX  552      
469-710 A Plano TX DLLSTX97XAX  552      
469-738 A Irving TX DLLSTX97XAX  552      
510-510 A Fremont-Newark: Main DA CA MLPTCAVPAMD  722   2024-11-03   
562-389 A Alamitos CA BLPKCAAFCM0  730      
562-648 A Lakewood CA BLPKCAAFCM0  730      
626-276 A Covina-Baldwin Park CA BLPKCAAFCM0  730      
626-477 A Alhambra CA BLPKCAAFCM0  730      
628-314 A San Rafael CA MLPTCAVPAMD  722   2024-11-03   
629-322 A Hartsville TN LWBGTNEVAMD  470   2024-11-18   
629-323 A Nashville TN LWBGTNEVAMD  470   2024-11-18   
631-280 A Westhampton NY   132   2025-10-25   
645-226 A Miami FL MIAUFLWSX7X  46017   2024-10-20   
645-227 A Keys FL MIAUFLWSX7X  46017   2024-10-25   
650-221 A South San Francisco CA MLPTCAVPAMD  722   2024-11-03   
656-229 A Tampa Central FL RVVWFLRMAMD  952   2024-11-01   
656-243 A Zephyrhills FL RVVWFLRMAMD  952   2024-11-02   
657-326 A Garden Grove CA BLPKCAAFCM0  730      
657-362 A Anaheim CA BLPKCAAFCM0  730      
661-419 A Hi Vista CA BLPKCAAFCM0  730      
661-442 A Santa Clarita: Newhall-Castaic DA CA BLPKCAAFCM0  730      
669-355 A San Jose: North DA CA MLPTCAVPAMD  722   2024-11-03   
669-357 A Sunnyvale CA MLPTCAVPAMD  722   2024-11-03   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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