Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 600

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-600 A Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-600 0 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240   2006-08-27   
301-600 1 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240   2006-08-27   
301-600 2 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240   2006-08-27   
301-600 3 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240   2006-08-27   
301-600 4 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240   2006-08-27   
301-600 5 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240   2006-08-27   
301-600 6 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240   2006-08-27   
301-600 7 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240   2006-08-27   
301-600 8 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240   2006-08-27   
301-600 9 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240   2006-08-27   

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

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