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.
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Switch: FRDRMDFRX7X

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-723 7 Cumberland MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2006-07-01   
301-726 A Kitzmiller MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240      
301-726 3 Kitzmiller MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2023-03-31   
301-732 8 Frederick MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2015-07-21   
301-810 4 Buckeystown MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2004-09-13   
301-835 4 Frederick MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2019-10-16   
301-969 3 Brunswick MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2010-01-04   
304-209 7 Keyser WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240   2012-03-16   
304-240 3 Falling Waters WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240   2012-03-16   
304-500 A Berkeley Springs WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240      
304-500 9 Berkeley Springs WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240   2009-10-23   
304-693 3 Gormania WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240   2012-05-18   
304-754 2 Hedgesville WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240   2010-01-04   
304-821 3 Inwood WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240   2010-01-28   
304-901 3 Martinsburg WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240   2011-12-16   
304-930 A Charles Town WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240      
304-930 9 Charles Town WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240   2006-03-31   
681-247 3 Martinsburg WV 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 240   2017-03-30   

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

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