Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 629

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-629 A Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
240-629 0 Frederick MD   9212 VERIZON MARYLAND, INC. 240      
240-629 1 Frederick MD   9212 VERIZON MARYLAND, INC. 240      
240-629 2 Frederick MD   9212 VERIZON MARYLAND, INC. 240      
240-629 3 Frederick MD   9212 VERIZON MARYLAND, INC. 240      
240-629 4 Frederick MD   9212 VERIZON MARYLAND, INC. 240      
240-629 5 Frederick MD   9212 VERIZON MARYLAND, INC. 240      
240-629 6 Frederick MD   9212 VERIZON MARYLAND, INC. 240      
240-629 7 Frederick MD   9212 VERIZON MARYLAND, INC. 240      
240-629 8 Frederick MD   318J COMCAST IP PHONE, LLC 240   2008-08-20   
240-629 9 Frederick MD   9212 VERIZON MARYLAND, INC. 240      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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