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: 939 [Rate centres in NPA 939] [Dial plan for NPA 939]

NXX: 473

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
939-473 A Vega Alta PR PBVJPRCO0MD  8645 SUNCOM DBA T-MOBILE USA 820   2025-02-07   
939-473 0 Vega Alta PR PBVJPRCO0MD  8645 SUNCOM DBA T-MOBILE USA 820   2025-02-07   
939-473 9 Vega Alta PR PBVJPRCO0MD  8645 SUNCOM DBA T-MOBILE USA 820   2025-02-07   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.