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: 512

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-512 A Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-512 0 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-512 1 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-512 2 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-512 3 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-512 4 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-512 5 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-512 6 Towson MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
410-512 7 Towson MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-512 8 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-512 9 Towson MD   876D ONVOY, LLC - MD 238      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.