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: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-557 A Seekonk MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-557 0 Seekonk MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-557 1 Seekonk MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-557 2 Seekonk MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
508-557 3 Seekonk MA BRTNMACRLMD  5562 METROPCS, INC. 128      
508-557 4 Seekonk MA BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128      
508-557 5 Seekonk MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
508-557 6 Seekonk MA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-557 7 Seekonk MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
508-557 8 Seekonk MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      
508-557 9 Seekonk MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.