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: 553J WHITESKY COMMUNICATIONS, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
213-543 A Los Angeles: DA 03 CA LSANCA03IMD  730      
213-543 1 Los Angeles: DA 03 CA LSANCA03IMD  730   2021-03-11   
213-558 8 Los Angeles: DA 12 CA LSANCA03IMD  730   2021-10-02   
213-562 0 Los Angeles: DA 04 CA LSANCA03IMD  730   2021-10-02   
213-668 0 Los Angeles: DA 05 CA LSANCA03IMD  730   2021-10-09   
213-733 0 Los Angeles: DA 14 CA LSANCA03IMD  730   2021-10-02   
213-737 2 Los Angeles: DA 01 CA LSANCA03IMD  730   2021-10-02   
213-871 0 Los Angeles: DA 11 CA LSANCA03IMD  730   2021-11-01   
213-889 0 Los Angeles: DA 09 CA LSANCA03IMD  730   2021-10-09   
219-272 A Lake Village IN CHCGILIDXEX  358      
219-272 1 Lake Village IN CHCGILIDXEX  358   2021-03-29   
219-288 1 St John IN CHCGILIDXEX  358   2021-02-22   
219-327 9 Lowell IN CHCGILIDXEX  358   2021-02-22   
219-348 2 Whiting IN CHCGILIDXEX  358   2021-02-22   
219-356 5 Crown Point IN CHCGILIDXEX  358   2021-02-22   
219-529 0 Hammond IN CHCGILIDXEX  358   2021-02-22   
219-697 4 Morocco IN CHCGILIDXEX  358   2021-02-22   
219-758 9 Merrillville IN CHCGILIDXEX  358   2021-02-22   
219-800 9 East Chicago IN CHCGILIDXEX  358   2021-02-22   
219-867 1 Dyer IN CHCGILIDXEX  358   2021-02-22   
219-966 1 Highland IN CHCGILIDXEX  358   2021-02-22   
219-981 0 Gary IN CHCGILIDXEX  358   2021-02-22   
223-247 A Dover PA HRBGPAHAXYX  226      
223-247 1 Dover PA HRBGPAHAXYX  226   2021-03-15   
256-222 0 Sheffield AL HNVIALUNXAZ  477   2021-03-28   
256-387 8 Hartselle AL HNVIALUNXAZ  477   2021-03-28   
256-863 A Huntsville AL HNVIALUNXAZ  477      
256-863 1 Huntsville AL HNVIALUNXAZ  477   2021-03-11   
256-866 A Killen AL HNVIALUNXAZ  477      
256-866 1 Killen AL HNVIALUNXAZ  477   2021-05-02   
256-908 0 Fruithurst AL ATLNGABU09Z  438   2021-03-26   
332-241 A New York City Zone 01 NY NYCKNYWMXMX  132      
332-241 1 New York City Zone 01 NY NYCKNYWMXMX  132   2021-03-11   
341-203 2 Richmond CA SNFCCA21XPZ  722   2021-09-16   
341-667 1 Oakland: Fruitvale DA CA SNFCCA21XPZ  722   2021-09-16   
341-732 2 El Sobrante-Pinole CA SNFCCA21XPZ  722   2021-09-16   
341-900 8 Crockett CA SNFCCA21XPZ  722   2021-09-16   
346-440 5 Houston Suburban TX HSTNTX08ZMD  560   2021-05-09   
346-453 A Houston TX HSTNTX08ZMD  560      
346-453 1 Houston TX HSTNTX08ZMD  560   2021-03-11   
408-360 6 San Jose: South DA CA SNFCCA21XPZ  722   2021-09-16   
424-447 0 Inglewood CA LSANCA03IMD  730   2021-10-01   
424-451 1 San Pedro CA LSANCA03IMD  730   2021-10-02   
424-453 0 Beverly Hills CA LSANCA03IMD  730   2021-10-01   
424-458 9 Redondo CA LSANCA03IMD  730   2021-10-30   
424-587 9 Culver City CA LSANCA03IMD  730   2021-10-01   
424-588 0 Hawthorne CA LSANCA03IMD  730   2021-10-01   
424-667 9 Lomita CA LSANCA03IMD  730   2021-10-02   
424-678 9 El Segundo CA LSANCA03IMD  730   2021-10-01   
424-699 0 Torrance CA LSANCA03IMD  730   2021-10-02   

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

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