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: 617 [Rate centres in NPA 617] [Dial plan for NPA 617]

NXX: 458

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-458 A Watertown MA NRTNMAAACM4  5562 METROPCS, INC. 128      
617-458 0 Watertown MA NRTNMAAACM4  5562 METROPCS, INC. 128      
617-458 1 Watertown MA NRTNMAAACM4  5562 METROPCS, INC. 128      
617-458 2 Watertown MA NRTNMAAACM4  5562 METROPCS, INC. 128      
617-458 3 Watertown MA NRTNMAAACM4  5562 METROPCS, INC. 128      
617-458 4 Watertown MA NRTNMAAACM4  5562 METROPCS, INC. 128      
617-458 5 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-05-22   
617-458 6 Watertown MA NRTNMAAACM4  5562 METROPCS, INC. 128      
617-458 7 Watertown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2022-08-20   
617-458 8 Watertown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2022-08-20   
617-458 9 Watertown MA NRTNMAAACM4  5562 METROPCS, INC. 128      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.