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: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 966

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-966 A Washington Zone 12 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-966 0 Washington Zone 12 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
301-966 1 Washington Zone 12 MD FALDMDFLRS0  9212 VERIZON MARYLAND, INC. 236      
301-966 2 Washington Zone 12 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-966 3 Washington Zone 12 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-966 4 Washington Zone 12 MD FALDMDFLRS0  9212 VERIZON MARYLAND, INC. 236      
301-966 5 Washington Zone 12 MD FALDMDFLRS0  9212 VERIZON MARYLAND, INC. 236      
301-966 6 Washington Zone 12 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-966 7 Washington Zone 12 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-966 8 Washington Zone 12 MD FALDMDFLRS0  9212 VERIZON MARYLAND, INC. 236      
301-966 9 Washington Zone 12 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.