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: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 339

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-339 A Sykesville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-339 0 Sykesville MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 1 Sykesville MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 2 Sykesville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-339 3 Sykesville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-339 4 Sykesville MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 5 Sykesville MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 6 Sykesville MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 7 Sykesville MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-339 8 Sykesville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-339 9 Sykesville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.