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: SLBRMDSB8MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-226 3 Oxford MD 2589 US LEC OF MARYLAND, INC. 242   2014-05-30   
410-275 6 Cecilton MD 2589 US LEC OF MARYLAND, INC. 242   2014-11-08   
410-304 5 Queenstown MD 2589 US LEC OF MARYLAND, INC. 242   2012-07-26   
410-390 4 Ocean City MD 2589 US LEC OF MARYLAND, INC. 242   2012-07-26   
410-600 1 Berlin MD 2589 US LEC OF MARYLAND, INC. 242   2014-09-04   
410-604 7 Stevensville MD 2589 US LEC OF MARYLAND, INC. 242   2013-03-25   
410-621 8 Princess Anne MD 2589 US LEC OF MARYLAND, INC. 242   2014-09-04   
443-258 2 Easton MD 2589 US LEC OF MARYLAND, INC. 242   2012-07-26   
443-666 2 Chestertown MD 2589 US LEC OF MARYLAND, INC. 242   2014-11-08   
443-972 A Cambridge MD 2589 US LEC OF MARYLAND, INC. 242      
443-972 4 Cambridge MD 2589 US LEC OF MARYLAND, INC. 242   2012-08-15   
443-988 6 Centreville MD 2589 US LEC OF MARYLAND, INC. 242   2016-11-18   
667-226 2 St Michaels MD 2589 US LEC OF MARYLAND, INC. 242   2018-01-08   
667-281 2 Salisbury MD 2589 US LEC OF MARYLAND, INC. 242   2022-03-21   
667-330 A Salisbury MD 2589 US LEC OF MARYLAND, INC. 242      
667-330 1 Salisbury MD 2589 US LEC OF MARYLAND, INC. 242   2012-07-21   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.