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.

NPA: 845 [Rate centres in NPA 845] [Dial plan for NPA 845]

NXX: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
845-233 A Hyde Park NY   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 133      
845-233 0 Hyde Park NY PGHKNYSHX2X  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 133   2007-01-30   
845-233 1 Hyde Park NY PGHKNYSHX2X  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 133   2004-05-05   
845-233 2 Hyde Park NY PGHKNYSHXJX  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 133   2006-01-28   
845-233 3 Hyde Park NY PGHKNYSHX6Y  793K TWC IP ENABLED SERVICES, LLC 133   2007-07-27   
845-233 4 Hyde Park NY   612K CSC VOICE, LLC 133   2004-07-27   
845-233 5 Hyde Park NY   612K CSC VOICE, LLC 133   2004-07-27   
845-233 6 Hyde Park NY PGHKNYSHXJX  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 133   2004-07-19   
845-233 7 Hyde Park NY PGHKNYWSN12  2475 FRONTIER COMMUNICATIONS OF AMERICA, INC. - NY 133   2005-03-19   
845-233 8 Hyde Park NY PGHKNYSHX2X  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 133   2008-03-25   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.