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: 918

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-918 A Essex MD ESSXMDEXDS0  9212 VERIZON MARYLAND, INC. 238      
410-918 0 Essex MD   9212 VERIZON MARYLAND, INC. 238      
410-918 1 Essex MD   9212 VERIZON MARYLAND, INC. 238      
410-918 2 Essex MD   9212 VERIZON MARYLAND, INC. 238      
410-918 3 Essex MD   9212 VERIZON MARYLAND, INC. 238      
410-918 4 Essex MD   9212 VERIZON MARYLAND, INC. 238      
410-918 5 Essex MD   9212 VERIZON MARYLAND, INC. 238      
410-918 6 Essex MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-918 7 Essex MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-05-29   
410-918 8 Essex MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-05-29   
410-918 9 Essex MD   9212 VERIZON MARYLAND, INC. 238      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.