Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 321J HD CARRIER LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
516-243 0 Nassau Zone 5 NY NYCMNY37UMD  132   2014-08-25   
516-253 3 Nassau Zone 2 NY NYCMNY37UMD  132   2014-08-01   
516-259 9 Nassau Zone 3 NY NYCMNY37UMD  132   2014-08-01   
516-269 4 Nassau Zone 2 NY NYCMNY37UMD  132   2016-08-18   
516-269 5 Nassau Zone 2 NY NYCMNY37UMD  132   2016-08-18   
516-273 9 Nassau Zone 2 NY NYCMNY37UMD  132   2016-08-18   
516-301 9 Nassau Zone 1 NY NYCMNY37UMD  132   2012-12-14   
516-370 4 Farmingdale NY NYCMNY37UMD  132   2012-12-08   
516-387 8 Nassau Zone 1 NY NYCMNY37UMD  132   2014-08-01   
516-494 1 Nassau Zone 9 NY NYCMNY37UMD  132   2016-08-18   
516-494 2 Nassau Zone 9 NY NYCMNY37UMD  132   2016-08-18   
516-494 5 Nassau Zone 9 NY NYCMNY37UMD  132   2016-08-18   
516-494 6 Nassau Zone 9 NY NYCMNY37UMD  132   2016-08-18   
516-494 8 Nassau Zone 9 NY NYCMNY37UMD  132   2016-08-18   
516-563 6 Nassau Zone 2 NY NYCMNY37UMD  132   2016-08-18   
516-583 2 Nassau Zone 4 NY NYCMNY37UMD  132   2016-08-18   
516-583 3 Nassau Zone 4 NY NYCMNY37UMD  132   2016-08-18   
516-583 4 Nassau Zone 4 NY NYCMNY37UMD  132   2016-08-18   
516-583 6 Nassau Zone 4 NY NYCMNY37UMD  132   2016-08-18   
516-583 7 Nassau Zone 4 NY NYCMNY37UMD  132   2016-08-18   
516-597 9 Nassau Zone 8 NY NYCMNY37UMD  132   2014-08-01   
516-600 A Nassau Zone 6 NY NYCMNY37UMD  132      
516-600 2 Nassau Zone 6 NY NYCMNY37UMD  132   2016-08-18   
516-600 3 Nassau Zone 6 NY NYCMNY37UMD  132   2016-08-18   
516-600 4 Nassau Zone 6 NY NYCMNY37UMD  132   2016-08-18   
516-600 5 Nassau Zone 6 NY NYCMNY37UMD  132   2016-08-18   
516-600 7 Nassau Zone 6 NY NYCMNY37UMD  132   2016-08-18   
516-624 5 Nassau Zone 7 NY   132   2014-08-01   
516-727 9 Nassau Zone 2 NY NYCMNY37UMD  132   2016-08-18   
516-893 A Nassau Zone 1 NY NYCMNY37XBX  132      
516-893 7 Nassau Zone 1 NY NYCMNY37XBX  132   2021-04-03   
516-893 8 Nassau Zone 1 NY NYCMNY37XBX  132   2021-04-03   
516-893 9 Nassau Zone 1 NY NYCMNY37XBX  132   2021-04-03   
516-896 A Nassau Zone 2 NY NYCMNY37XBX  132      
516-896 7 Nassau Zone 2 NY NYCMNY37XBX  132   2021-04-03   
516-896 8 Nassau Zone 2 NY NYCMNY37XBX  132   2021-04-03   
516-896 9 Nassau Zone 2 NY NYCMNY37XBX  132   2021-04-03   
516-900 8 Nassau Zone 9 NY NYCMNY37UMD  132   2014-08-01   
516-916 A Nassau Zone 1 NY NYCMNY37UMD  132      
516-916 9 Nassau Zone 1 NY NYCMNY37UMD  132   2018-12-16   
517-307 3 Jackson MI   346   2026-02-14   
517-307 4 Jackson MI   346   2026-02-14   
517-307 5 Jackson MI   346   2026-02-14   
517-350 A Lansing MI LNNGMIDCKMD  346      
517-350 8 Lansing MI LNNGMIDCKMD  346   2023-05-11   
517-350 9 Lansing MI LNNGMIDCKMD  346   2023-05-11   
518-240 7 Bolton Landing NY ALBYNYSSXZY  134   2014-07-31   
518-252 9 Cambridge NY   134   2014-07-31   
518-263 7 Hunter NY ALBYNYSSXZY  134   2016-04-07   
518-263 8 Hunter NY ALBYNYSSXZY  134   2016-04-07   

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

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