Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX: 853

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-853 A Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 0 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 1 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 2 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 3 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 4 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 5 Towson MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-853 6 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 7 Towson MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
410-853 8 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-853 9 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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