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.
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OCN: 425J CSC WIRELESS, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
325-273 2 Sweetwater TX   550   2019-05-16   
325-273 3 Sweetwater TX   550   2019-07-22   
329-209 A Brewster NY WHPLNYGRX0X  132   2024-03-01   
329-209 0 Brewster NY   132   2024-03-01   
329-209 1 Brewster NY   132   2024-03-01   
329-209 2 Brewster NY   132   2024-03-01   
332-210 A New York City Zone 01 NY WHPLNYGRX0X  132      
332-210 0 New York City Zone 01 NY   132   2019-07-15   
332-210 1 New York City Zone 01 NY   132   2019-07-25   
332-210 2 New York City Zone 01 NY   132   2019-08-15   
332-210 3 New York City Zone 01 NY   132   2019-08-25   
334-746 A Montgomery AL MTGMALMTYXX  478      
334-746 2 Montgomery AL   478   2020-08-31   
337-214 8 Lake Charles LA   488   2025-04-19   
337-425 1 Lake Charles LA   488   2025-04-25   
337-425 8 Lake Charles LA   488   2025-05-01   
337-489 0 Lake Charles LA   488   2024-07-25   
337-489 1 Lake Charles LA   488   2024-07-31   
337-549 A Lake Charles LA LKCHLADTY0X  488      
337-549 0 Lake Charles LA   488   2019-07-15   
337-549 2 Lake Charles LA   488   2019-05-12   
337-549 3 Lake Charles LA   488   2019-07-15   
346-364 7 Cleveland TX   560   2019-06-20   
346-825 3 Cleveland TX   560   2025-04-16   
346-825 4 Cleveland TX   560   2025-04-28   
347-516 7 New York City Zone 03 NY   132   2023-04-02   
347-970 4 New York City Zone 10 NY   132   2019-05-30   
352-659 A Ocala FL GSVLFLMAY0X  45403      
352-659 2 Ocala FL   45403   2020-08-17   
361-363 A Victoria TX CRCHTXTUY0X  564      
361-363 0 Victoria TX   564   2019-07-10   
361-363 2 Victoria TX   564   2019-05-16   
364-203 A Bowling Green KY BWLGKYMAY0X  464      
364-203 2 Bowling Green KY   464   2020-08-03   
385-354 A Salt Lake City UT SLKCUTMAY0X  660      
385-354 2 Salt Lake City UT   660   2020-08-27   
386-285 A Daytona Beach FL DYBHFLPOY0X  45601      
386-285 2 Daytona Beach FL   45601   2020-08-28   
401-291 A Providence RI PRVDRIWAY0X  130      
401-291 2 Providence RI   130   2020-04-17   
405-854 0 Stillwater OK   536   2019-06-14   
405-854 1 Stillwater OK   536   2019-06-14   
406-401 A Great Falls MT GRFLMTMAX0X  648      
406-401 2 Great Falls MT   648   2019-07-20   
406-409 A Billings MT BLNGMTASX0X  650      
406-409 2 Billings MT   650   2019-07-20   
409-257 A Beaumont TX BUMTTXTEY0X  562      
409-257 2 Beaumont TX   562   2020-08-03   
413-361 A Springfield MA SPFDMAWOY0X  126      
413-361 2 Springfield MA   126   2020-04-17   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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