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: 740

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-740 A Framingham MA NRTNMAAACM4  5562 METROPCS, INC. 128   2024-02-09   
508-740 0 Framingham MA NRTNMAAACM4  5562 METROPCS, INC. 128      
508-740 1 Framingham MA NRTNMAAACM4  5562 METROPCS, INC. 128      
508-740 2 Framingham MA NRTNMAAACM4  5562 METROPCS, INC. 128      
508-740 3 Framingham MA NRTNMAAACM4  5562 METROPCS, INC. 128      
508-740 4 Framingham MA NRTNMAAACM4  5562 METROPCS, INC. 128      
508-740 5 Framingham MA NRTNMAAACM4  5562 METROPCS, INC. 128      
508-740 6 Framingham MA NRTNMAAACM4  5562 METROPCS, INC. 128      
508-740 7 Framingham MA NRTNMAAACM4  5562 METROPCS, INC. 128      
508-740 8 Framingham MA NRTNMAAACM4  5562 METROPCS, INC. 128      
508-740 9 Framingham MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.