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: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 851

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-851 A McCoole MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-851 0 McCoole MD   073H TELNYX LLC 240   2021-03-04   
240-851 1 McCoole MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-09-13   
240-851 2 McCoole MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-09-13   
240-851 5 McCoole MD   624H ONVOY SPECTRUM, LLC 240   2021-05-24   
240-851 8 McCoole MD   566J RADIANTIQ LLC 240   2021-05-14   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.