Local Calling Guide

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OCN: 2697 CTC COMMUNICATIONS CORP. - MD

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
240-242 6 Washington Zone 11 MD WASHDCMTX7X  236   2006-09-07   
240-245 1 Washington Zone 14 MD WASHDCMTX7X  236   2006-01-14   
240-449 1 Gaithersburg MD WASHDCMTX7X  236   2005-09-03   
240-619 1 Washington Zone 5 MD WASHDCMTX7X  236   2006-01-14   
240-708 7 Laurel (Baltimore LATA) MD BLTMMDCH14Z  238   2012-11-21   
240-865 1 Washington Zone 14 (Baltimore LATA) MD BLTMMDCH14Z  238   2006-01-14   
301-269 8 Washington Zone 2 MD WASHDCMTX7X  236   2015-06-29   
301-372 5 Washington Zone 16 MD WASHDCMTX7X  236   2016-06-17   
301-388 7 Washington Zone 12 MD WASHDCMTX7X  236   2008-04-11   
301-389 3 Washington Zone 13 MD WASHDCMTX7X  236   2006-06-23   
301-542 1 Waldorf MD WASHDCMTX7X  236   2006-01-20   
301-549 7 Ashton MD WASHDCMTX7X  236   2011-11-01   
301-637 1 Washington Zone 10 MD WASHDCMTX7X  236   2005-12-15   
301-812 5 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH14Z  238   2013-08-28   
301-820 3 Gaithersburg MD WASHDCMTX7X  236   2011-05-27   
301-823 3 Washington Zone 13 MD WASHDCMTX7X  236   2012-11-21   
301-828 1 Washington Zone 2 MD WASHDCMTX7X  236   2005-11-11   
301-832 3 Washington Zone 4 MD WASHDCMTX7X  236   2006-06-24   
301-920 5 Washington Zone 3 MD WASHDCMTX7X  236   2008-12-01   
301-965 7 Washington Zone 6 MD WASHDCMTX7X  236   2010-07-28   
301-974 3 Laurel MD WASHDCMTX7X  236   2006-05-04   
410-374 7 Hampstead MD BLTMMDCH14Z  238   2008-03-13   
410-387 7 Baltimore MD BLTMMDCH14Z  238   2011-10-11   
410-497 3 Parkville MD BLTMMDCH14Z  238   2006-04-01   
410-514 4 Severn MD BLTMMDCH14Z  238   2007-07-13   
410-557 1 Fork MD BLTMMDCH14Z  238   2005-04-04   
410-776 7 Bel Air MD BLTMMDCH14Z  238   2005-04-04   
410-840 6 Reisterstown MD BLTMMDCH14Z  238   2005-12-15   
410-861 1 Westminster MD BLTMMDCH14Z  238   2007-01-22   
410-888 6 Waterloo (Washington DC LATA) MD WASHDCMTX7X  236   2013-11-21   
410-900 A Baltimore MD BLTMMDCH14Z  238      
410-900 1 Baltimore MD BLTMMDCH14Z  238   2004-12-09   
410-988 1 Ellicott City MD BLTMMDCH14Z  238   2005-03-10   
410-994 4 Edgewood MD BLTMMDCH14Z  238   2005-04-04   
443-227 A Port Deposit MD BLTMMDCH14Z  238      
443-227 1 Port Deposit MD BLTMMDCH14Z  238      
443-230 A Odenton MD BLTMMDCH14Z  238      
443-230 1 Odenton MD BLTMMDCH14Z  238      
443-231 1 Essex MD BLTMMDCH14Z  238   2005-04-29   
443-238 A Parkton MD BLTMMDCH14Z  238      
443-238 2 Parkton MD BLTMMDCH14Z  238      
443-247 A Union Bridge MD BLTMMDCH14Z  238      
443-247 1 Union Bridge MD BLTMMDCH14Z  238      
443-256 A North East MD BLTMMDCH14Z  238      
443-256 1 North East MD BLTMMDCH14Z  238      
443-292 3 Crofton MD BLTMMDCH14Z  238   2007-10-03   
443-316 3 Woodlawn MD BLTMMDCH14Z  238   2006-05-11   
443-328 A Sykesville MD BLTMMDCH14Z  238      
443-328 1 Sykesville MD BLTMMDCH14Z  238      
443-330 3 Cockeysville MD BLTMMDCH14Z  238   2005-03-10   

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Last updated: Sun, 28 Feb 2021 19:06:05 UTC

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