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.

Switch: FRDRMDFRPMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-310 1 Hagerstown MD 2589 US LEC OF MARYLAND, INC. 240      
240-366 3 Williamsport MD 2589 US LEC OF MARYLAND, INC. 240      
240-397 2 Frederick MD 2589 US LEC OF MARYLAND, INC. 240      
240-405 A Frederick MD 2589 US LEC OF MARYLAND, INC. 240      
240-405 1 Frederick MD 2589 US LEC OF MARYLAND, INC. 240      
240-415 7 Frederick MD 2589 US LEC OF MARYLAND, INC. 240      
240-436 1 Buckeystown MD 2589 US LEC OF MARYLAND, INC. 240      
240-436 4 Buckeystown MD 2589 US LEC OF MARYLAND, INC. 240      
240-566 1 Frederick MD 2589 US LEC OF MARYLAND, INC. 240      
240-575 7 Frederick MD 2589 US LEC OF MARYLAND, INC. 240      
240-608 3 Frederick MD 2589 US LEC OF MARYLAND, INC. 240      
240-699 1 Buckeystown MD 2589 US LEC OF MARYLAND, INC. 240      
301-378 1 Frederick MD 2589 US LEC OF MARYLAND, INC. 240      
301-703 3 Mount Airy MD 2589 US LEC OF MARYLAND, INC. 240      

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

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