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: CLPKMDBWDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-624 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
240-684 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-220 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-286 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-313 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-344 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-345 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-397 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-441 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-446 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-474 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-486 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-488 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-489 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-507 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-513 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-614 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-901 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-982 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-993 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      

Last updated: Fri, 17 May 2019 00:49:52 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.