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: 992

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-992 A Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
410-992 0 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
410-992 1 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
410-992 2 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-10-28   
410-992 3 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
410-992 4 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
410-992 5 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
410-992 6 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
410-992 7 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
410-992 8 Columbia MD ELCYMDELDS0  9212 VERIZON MARYLAND, INC. 238      
410-992 9 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.