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: 631 [Rate centres in NPA 631] [Dial plan for NPA 631]

NXX: 855

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-855 A Deer Park NY SYOSNYGNCM1  5562 METROPCS, INC. 132      
631-855 0 Deer Park NY WHPLNYWPXOY  997E BANDWIDTH.COM CLEC, LLC - NY 132   2011-07-07   
631-855 1 Deer Park NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2012-03-04   
631-855 2 Deer Park NY SYOSNYGNCM1  5562 METROPCS, INC. 132   2011-03-15   
631-855 3 Deer Park NY NYCMNYBX3MD  473G TELENGY L.L.C. - NY 132   2012-02-25   
631-855 4 Deer Park NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2012-03-04   
631-855 5 Deer Park NY SYOSNYGNCM1  5562 METROPCS, INC. 132   2011-11-07   
631-855 6 Deer Park NY SYOSNYGNCM1  5562 METROPCS, INC. 132   2011-03-15   
631-855 7 Deer Park NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2012-03-04   
631-855 8 Deer Park NY SYOSNYGNCM1  5562 METROPCS, INC. 132   2011-11-07   
631-855 9 Deer Park NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2012-03-04   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.