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.

Moca, DR

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
809-278 A SWCHDRUNKNO  8921 TRICOM (DR) 828      
809-578 A SWCHDRUNKNO  8909 CODETEL (DR) 828      

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.