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: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-233 A Natick MA FRMNMAUNRP1  9102 VERIZON NEW ENGLAND INC. 128      
508-233 0 Natick MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2005-07-23   
508-233 1 Natick MA FRMNMAUNRP1  9102 VERIZON NEW ENGLAND INC. 128      
508-233 2 Natick MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-03-31   
508-233 3 Natick MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-03-31   
508-233 4 Natick MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-09   
508-233 5 Natick MA   145J TERRA NOVA TELECOM INC. 128   2023-06-22   
508-233 6 Natick MA FRMNMAUNRP1  9102 VERIZON NEW ENGLAND INC. 128      
508-233 7 Natick MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-09   
508-233 8 Natick MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2009-07-10   
508-233 9 Natick MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.