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: 339 [Rate centres in NPA 339] [Dial plan for NPA 339]

NXX: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
339-400 A Saugus MA SOVLMAABAMD  965H FRACTEL LLC 128      
339-400 0 Saugus MA   965H FRACTEL LLC 128   2020-07-06   
339-400 1 Saugus MA   073H TELNYX LLC 128   2021-03-20   
339-400 2 Saugus MA   892D ONVOY, LLC - MA 128   2021-03-11   
339-400 3 Saugus MA   892D ONVOY, LLC - MA 128   2021-03-11   
339-400 4 Saugus MA   965H FRACTEL LLC 128   2020-07-06   
339-400 8 Saugus MA   624H ONVOY SPECTRUM, LLC 128   2021-04-12   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.