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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
939-300 A San Lorenzo PR GUYNPRTCDS0  985G NATURAL G.C. INC. - PR 820      
939-300 0 San Lorenzo PR GUYNPRTCDS0  985G NATURAL G.C. INC. - PR 820   2019-03-03   
939-300 1 San Lorenzo PR GUYNPR335MD  073H TELNYX LLC 820   2022-12-19   
939-300 3 San Lorenzo PR GUYNPRTCDS0  985G NATURAL G.C. INC. - PR 820   2019-03-03   
939-300 4 San Lorenzo PR PBVJPRCO1MD  559F NEUTRAL TANDEM - PR 820   2021-01-25   
939-300 5 San Lorenzo PR PBVJPRCO4MD  624H ONVOY SPECTRUM, LLC 820   2023-12-05   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.