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.

Switch: NYCMNY13XJX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
332-234 A New York City Zone 01 NY 478J NUSO, LLC 132      
332-234 1 New York City Zone 01 NY 478J NUSO, LLC 132   2020-08-09   
332-239 A New York City Zone 01 NY 478J NUSO, LLC 132      
332-239 1 New York City Zone 01 NY 478J NUSO, LLC 132   2021-02-08   
332-239 2 New York City Zone 01 NY 478J NUSO, LLC 132   2021-02-08   
332-277 6 New York City Zone 01 NY 478J NUSO, LLC 132   2024-02-03   
332-277 7 New York City Zone 01 NY 478J NUSO, LLC 132   2024-02-03   
475-303 A Greenwich CT 478J NUSO, LLC 132      
475-303 1 Greenwich CT 478J NUSO, LLC 132   2020-11-02   
646-551 1 New York City Zone 01 NY 478J NUSO, LLC 132   2024-06-10   
646-551 2 New York City Zone 01 NY 478J NUSO, LLC 132   2024-06-10   
917-210 7 New York City Zone 01 NY 478J NUSO, LLC 132   2024-06-10   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.