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.

OCN: 1958 ATX TELECOMMUNICATIONS SERVICES, LTD

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
410-414 6 Prince Frederick MD   238   2004-03-27   
410-441 2 Elkton MD   238   2003-02-26   
410-452 1 Cardiff MD   238   2003-02-25   
410-457 1 Darlington MD   238   2003-02-25   
410-489 8 Glenwood MD   238   2003-02-26   
410-505 9 Ellicott City MD   238   2004-03-27   
410-513 8 Parkville MD   238   2004-03-27   
410-514 0 Severn MD   238   2003-02-27   
410-609 8 Brooklyn Park-Linthicum MD   238   2003-02-25   
410-616 8 Towson MD   238   2003-02-27   
410-691 8 Glen Burnie MD   238   2003-02-26   
410-697 8 Millersville MD   238   2006-04-03   
410-698 0 Fork MD   238   2003-02-26   
410-753 8 Pikesville MD   238   2003-02-27   
410-782 4 Elkridge MD   238   2003-02-25   
410-793 8 Severna Park MD   238   2003-02-27   
410-861 4 Westminster MD   238   2006-05-12   
410-874 2 Odenton MD   238   2006-06-30   
410-875 8 Sykesville MD   238   2004-03-27   
410-878 9 Baltimore MD   238   2006-08-07   
410-907 8 Woodlawn MD   238   2006-03-25   
410-940 A Annapolis MD BLTMMDCHAMD  238      
410-940 6 Annapolis MD   238   2002-03-15   
410-942 2 Havre de Grace MD   238   2004-03-27   
443-259 9 Columbia MD   238   2003-02-25   
443-341 8 Catonsville MD   238   2004-03-27   
443-922 A Edgewood MD BLTMMDSN0MD  238      
443-922 2 Edgewood MD   238   2006-03-31   
484-893 5 Bethlehem PA   228   2005-08-06   
571-339 6 Engleside VA   236   2006-07-07   
609-323 A Ewing NJ CMDNNJCE1MD  222      
609-323 1 Ewing NJ   222      
609-323 2 Ewing NJ   222      
609-447 A Florence (Burlington) NJ CMDNNJCE1MD  222      
609-447 6 Florence (Burlington) NJ   222      
609-535 A Vincentown NJ CMDNNJCE1MD  222      
609-535 6 Vincentown NJ   222      
609-556 A Fort Dix NJ CMDNNJCE1MD  222      
609-556 6 Fort Dix NJ   222      
609-566 A Lambertville NJ CMDNNJCE1MD  222      
609-566 7 Lambertville NJ   222      
609-570 2 Mercerville NJ   222   2007-06-03   
609-570 3 Mercerville NJ   222   2006-04-08   
609-630 A Hightstown NJ CMDNNJCE1MD  222      
609-630 6 Hightstown NJ   222      
609-668 A Mount Holly NJ CMDNNJCE1MD  222      
609-668 6 Mount Holly NJ   222      
609-738 A New Egypt NJ CMDNNJCE1MD  222      
609-738 6 New Egypt NJ   222      
609-779 A Plainsboro NJ CMDNNJCE1MD  222      

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Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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