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: 302 [Rate centres in NPA 302] [Dial plan for NPA 302]

NXX: 506

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
302-506 A Holly Oak DE PHLAPAFGD2S  969E ONVOY, LLC - DE 228      
302-506 0 Holly Oak DE PHLAPAFGXGX  939H COMMIO, LLC 228   2024-03-03   
302-506 1 Holly Oak DE PHLAPAFGXGX  939H COMMIO, LLC 228   2024-03-03   
302-506 2 Holly Oak DE PHLAPAFGD2S  969E ONVOY, LLC - DE 228   2023-11-05   
302-506 3 Holly Oak DE PHLAPAFGD2S  969E ONVOY, LLC - DE 228   2023-11-05   
302-506 9 Holly Oak DE   969E ONVOY, LLC - DE 228   2025-04-06   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.