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: 907

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-907 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-907 0 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-907 1 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2018-02-05   
301-907 2 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-907 3 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-907 4 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-907 5 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-907 6 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-907 7 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-907 8 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-907 9 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.