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Search area code/prefix (NPA/NXX)
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OCN: 228C IDT AMERICA, CORP. - MD

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
240-237 8 Lexington Park-Great Mills MD CHCHMDBEXCX  236   2007-09-12   
240-249 6 Mechanicsville MD CHCHMDBEXCX  236   2007-09-12   
240-258 5 Ridge MD CHCHMDBEXCX  236   2007-09-12   
240-284 1 Frostburg MD CMLDMDCH0MD  240   2006-03-10   
240-309 4 Leonardtown MD CHCHMDBEXCX  236   2013-02-10   
240-317 5 Lexington Park-Great Mills MD CHCHMDBEXCX  236   2009-03-05   
240-362 7 Cumberland MD CMLDMDCH0MD  240   2006-10-06   
240-522 0 Cumberland MD CMLDMDCH0MD  240   2007-08-03   
240-609 1 Cumberland MD CMLDMDCH0MD  240   2016-08-18   
240-661 5 Lexington Park-Great Mills MD CHCHMDBEXCX  236   2016-09-15   
301-264 2 Mount Savage MD CMLDMDCH0MD  240   2006-03-10   
301-338 A Cumberland MD CMLDMDCH0MD  240      
301-338 2 Cumberland MD CMLDMDCH0MD  240   2006-03-25   
301-463 1 Lonaconing MD CMLDMDCH0MD  240   2006-03-10   
301-478 1 Flintstone MD CMLDMDCH0MD  240   2006-03-10   
301-690 A Leonardtown MD CHCHMDBEXCX  236      
301-690 2 Leonardtown MD CHCHMDBEXCX  236   2007-07-14   
301-786 1 McCoole MD CMLDMDCH0MD  240   2006-03-10   
410-200 2 Easton MD ESTNMDESMMD  242   2006-05-21   
410-226 1 Oxford MD ESTNMDESMMD  242   2006-05-21   
410-304 A Queenstown MD ESTNMDESMMD  242      
410-304 2 Queenstown MD ESTNMDESMMD  242   2006-05-20   
410-348 3 Still Pond MD ESTNMDESMMD  242   2006-05-21   
410-364 3 Hillsboro MD ESTNMDESMMD  242   2006-05-21   
410-438 6 Sudlersville MD ESTNMDESMMD  242   2006-05-21   
410-476 6 Trappe MD ESTNMDESMMD  242   2006-05-21   
410-482 3 Greensboro MD ESTNMDESMMD  242   2006-05-21   
410-556 2 Church Hill MD ESTNMDESMMD  242   2006-05-06   
410-618 A Perryville MD BLTMMDCH3MD  238      
410-618 2 Perryville MD BLTMMDCH3MD  238   2012-01-06   
410-634 4 Ridgely MD ESTNMDESMMD  242   2012-06-01   
410-639 4 Rock Hall MD ESTNMDESMMD  242   2006-05-21   
410-648 1 Galena MD ESTNMDESMMD  242   2006-05-21   
410-745 8 St Michaels MD ESTNMDESMMD  242   2006-05-21   
410-755 0 Warwick MD ESTNMDESMMD  242   2012-07-07   
410-885 7 Chesapeake City MD ESTNMDESMMD  242   2012-01-08   
410-886 1 Tilghman MD ESTNMDESMMD  242   2006-05-21   
410-928 2 Millington MD ESTNMDESMMD  242   2006-05-21   
443-249 3 Stevensville MD ESTNMDESMMD  242   2006-05-21   
443-249 5 Stevensville MD ESTNMDESMMD  242   2012-12-21   
443-262 8 Centreville MD ESTNMDESMMD  242   2006-05-06   
443-282 0 Chestertown MD ESTNMDESMMD  242   2006-05-06   
443-747 4 Port Deposit MD BLTMMDCH3MD  238   2012-01-08   
443-782 8 Annapolis MD BLTMMDCH3MD  238   2018-01-14   
443-941 2 Elkton MD BLTMMDCH3MD  238   2012-01-08   
443-967 2 North East MD BLTMMDCH3MD  238   2012-01-08   
443-972 7 Cambridge MD ESTNMDESMMD  242   2018-01-14   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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