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.

Switch: LPLTMDLADS0

Remotes:

Switch Switch name Switch type
INHDMDINRS0  INDIAN HEAD  5ER 
NJMYMDNJRS0  NANJEMOY  5ER 
TMVLMDTKRS0  TOMPKINSVILLE  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-392 A La Plata MD 9212 VERIZON MARYLAND, INC. 236      
301-392 0 La Plata MD 9212 VERIZON MARYLAND, INC. 236      
301-392 1 La Plata MD 9212 VERIZON MARYLAND, INC. 236      
301-392 3 La Plata MD 9212 VERIZON MARYLAND, INC. 236      
301-392 5 La Plata MD 9212 VERIZON MARYLAND, INC. 236      
301-392 6 La Plata MD 9212 VERIZON MARYLAND, INC. 236      
301-392 9 La Plata MD 9212 VERIZON MARYLAND, INC. 236      
301-539 4 La Plata MD 9212 VERIZON MARYLAND, INC. 236   2005-05-24   
301-539 7 La Plata MD 9212 VERIZON MARYLAND, INC. 236   2007-12-11   
301-609 A Waldorf MD 9212 VERIZON MARYLAND, INC. 236      
301-609 3 Waldorf MD 9212 VERIZON MARYLAND, INC. 236      
301-609 4 Waldorf MD 9212 VERIZON MARYLAND, INC. 236      
301-609 5 Waldorf MD 9212 VERIZON MARYLAND, INC. 236      
301-609 6 Waldorf MD 9212 VERIZON MARYLAND, INC. 236      
301-609 7 Waldorf MD 9212 VERIZON MARYLAND, INC. 236      
301-609 8 Waldorf MD 9212 VERIZON MARYLAND, INC. 236      
301-609 9 Waldorf MD 9212 VERIZON MARYLAND, INC. 236      
301-753 A Washington Zone 6 MD 9212 VERIZON MARYLAND, INC. 236      
301-753 1 Washington Zone 6 MD 9212 VERIZON MARYLAND, INC. 236      
301-753 2 Washington Zone 6 MD 9212 VERIZON MARYLAND, INC. 236      
301-753 4 Washington Zone 6 MD 9212 VERIZON MARYLAND, INC. 236      
301-753 5 Washington Zone 6 MD 9212 VERIZON MARYLAND, INC. 236      
301-753 6 Washington Zone 6 MD 9212 VERIZON MARYLAND, INC. 236      
301-753 9 Washington Zone 6 MD 9212 VERIZON MARYLAND, INC. 236      
301-932 A Waldorf MD 9212 VERIZON MARYLAND, INC. 236      
301-934 A La Plata MD 9212 VERIZON MARYLAND, INC. 236      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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