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: BRNDMDBERS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-372 A Washington Zone 16 MD 9212 VERIZON MARYLAND, INC. 236      
301-372 0 Washington Zone 16 MD 9212 VERIZON MARYLAND, INC. 236      
301-372 1 Washington Zone 16 MD 9212 VERIZON MARYLAND, INC. 236      
301-372 2 Washington Zone 16 MD 9212 VERIZON MARYLAND, INC. 236      
301-372 3 Washington Zone 16 MD 9212 VERIZON MARYLAND, INC. 236      
301-372 6 Washington Zone 16 MD 9212 VERIZON MARYLAND, INC. 236      
301-372 8 Washington Zone 16 MD 9212 VERIZON MARYLAND, INC. 236      
301-782 A Brandywine MD 9212 VERIZON MARYLAND, INC. 236      
301-782 1 Brandywine MD 9212 VERIZON MARYLAND, INC. 236      
301-782 2 Brandywine MD 9212 VERIZON MARYLAND, INC. 236      
301-782 3 Brandywine MD 9212 VERIZON MARYLAND, INC. 236      
301-782 4 Brandywine MD 9212 VERIZON MARYLAND, INC. 236      
301-782 5 Brandywine MD 9212 VERIZON MARYLAND, INC. 236      
301-782 6 Brandywine MD 9212 VERIZON MARYLAND, INC. 236      
301-782 7 Brandywine MD 9212 VERIZON MARYLAND, INC. 236      
301-782 9 Brandywine MD 9212 VERIZON MARYLAND, INC. 236      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.