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: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX: 394

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-394 A Solomons MD SLMNMDSLRS1  9212 VERIZON MARYLAND, INC. 238      
410-394 0 Solomons MD SLMNMDSLRS1  9212 VERIZON MARYLAND, INC. 238      
410-394 1 Solomons MD SLMNMDSLRS1  9212 VERIZON MARYLAND, INC. 238      
410-394 2 Solomons MD SLMNMDSLRS1  9212 VERIZON MARYLAND, INC. 238      
410-394 3 Solomons MD SLMNMDSLRS1  9212 VERIZON MARYLAND, INC. 238      
410-394 4 Solomons MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-394 5 Solomons MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-12-02   
410-394 6 Solomons MD SLMNMDSLRS1  9212 VERIZON MARYLAND, INC. 238      
410-394 7 Solomons MD   829J PAETEC ITEL, LLC 238   2004-02-05   
410-394 8 Solomons MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-16   
410-394 9 Solomons MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.