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: 687

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
939-687 A Gurabo PR LUQUPRAEDS0  955G LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 820      
939-687 0 Gurabo PR   073H TELNYX LLC 820   2022-12-15   
939-687 1 Gurabo PR   955G LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 820   2017-05-26   
939-687 2 Gurabo PR   091J LUMEN TECHNOLOGIES PUERTO RICO, LLC 820   2020-03-08   
939-687 3 Gurabo PR   091J LUMEN TECHNOLOGIES PUERTO RICO, LLC 820   2020-08-27   
939-687 4 Gurabo PR   091J LUMEN TECHNOLOGIES PUERTO RICO, LLC 820   2020-08-27   
939-687 5 Gurabo PR   091J LUMEN TECHNOLOGIES PUERTO RICO, LLC 820   2020-08-27   
939-687 6 Gurabo PR   559F NEUTRAL TANDEM - PR 820   2021-01-25   
939-687 7 Gurabo PR   624H ONVOY SPECTRUM, LLC 820   2023-12-05   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.