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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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-200 A Easton MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
410-200 9 Easton MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2004-07-22   
410-202 3 Salisbury MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2006-08-01   
410-213 5 Ocean City MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-01-02   
410-304 3 Queenstown MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-01   
410-352 7 Bishopville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
410-482 5 Greensboro MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
410-600 A Berlin MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
410-600 3 Berlin MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
410-621 9 Princess Anne MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
410-639 5 Rock Hall MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2017-09-18   
410-754 4 Federalsburg MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
410-928 8 Millington MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
443-210 3 Salisbury MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2011-11-18   
443-225 7 Cambridge MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
443-234 3 Snow Hill MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2016-05-06   
443-249 4 Stevensville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2011-01-03   
443-282 3 Chestertown MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
443-437 3 Pocomoke MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2012-03-01   
443-446 A Queenstown MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
443-448 3 Denton MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2015-11-02   
443-706 3 Crisfield MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
443-746 4 Easton MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2015-09-01   
443-754 6 Salisbury MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2017-11-21   
443-988 4 Centreville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-02   
667-221 4 Salisbury MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2020-02-26   
667-254 4 Chestertown MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2020-10-04   
667-264 A Delmar MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-264 3 Delmar MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2019-04-29   
667-343 A Cambridge MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-727 3 Sudlersville MD 7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2019-04-22   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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