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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-223 A Williamsport MD WLPTMDWPRS2  9212 VERIZON MARYLAND, INC. 240      
301-223 0 Williamsport MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2016-10-16   
301-223 1 Williamsport MD   9212 VERIZON MARYLAND, INC. 240      
301-223 2 Williamsport MD   9212 VERIZON MARYLAND, INC. 240      
301-223 3 Williamsport MD   2593 CORE COMMUNICATIONS, INC. - MD 240   2004-03-28   
301-223 4 Williamsport MD   9212 VERIZON MARYLAND, INC. 240      
301-223 5 Williamsport MD   9212 VERIZON MARYLAND, INC. 240      
301-223 6 Williamsport MD   9212 VERIZON MARYLAND, INC. 240      
301-223 7 Williamsport MD   9212 VERIZON MARYLAND, INC. 240      
301-223 8 Williamsport MD   9212 VERIZON MARYLAND, INC. 240      
301-223 9 Williamsport MD   9212 VERIZON MARYLAND, INC. 240      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.