Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 568G PEERLESS NETWORK OF MARYLAND, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
240-509 8 Washington Zone 14 (Baltimore LATA) MD   238   2013-05-05   
240-512 5 Washington Zone 13 (Baltimore LATA) MD   238   2012-11-23   
240-514 6 Washington Zone 11 MD   236   2020-04-19   
240-518 0 Waldorf MD   236   2023-07-24   
240-524 A Laurel MD WASHDC12DS6  236      
240-524 4 Laurel MD   236      
240-524 5 Laurel MD   236      
240-524 7 Laurel MD   236      
240-524 9 Laurel MD   236      
240-525 A Washington Zone 15 MD WASHDC12DS6  236      
240-525 9 Washington Zone 15 MD   236      
240-526 A Leonardtown MD WASHDC12DS6  236      
240-526 9 Leonardtown MD   236      
240-530 8 Waldorf MD   236   2013-10-26   
240-536 A Ashton MD WASHDC12DS6  236      
240-536 9 Ashton MD   236      
240-539 A Washington Zone 4 MD SLSPMD91DS0  236      
240-539 3 Washington Zone 4 MD   236   2020-04-19   
240-539 5 Washington Zone 4 MD   236   2020-09-05   
240-539 9 Washington Zone 4 MD   236      
240-540 3 Washington Zone 13 (Baltimore LATA) MD   238   2020-03-18   
240-545 7 Washington Zone 15 MD   236   2010-08-19   
240-549 8 Frederick MD   240   2018-03-09   
240-558 0 Washington Zone 11 MD   236   2013-05-03   
240-558 9 Washington Zone 11 MD   236   2013-05-03   
240-563 4 Washington Zone 5 MD   236   2018-11-20   
240-563 7 Washington Zone 5 MD   236   2018-06-24   
240-590 6 Washington Zone 12 MD   236   2020-02-26   
240-591 0 Hagerstown MD   240   2020-04-15   
240-597 A Gaithersburg MD SLSPMD91DS0  236      
240-597 0 Gaithersburg MD   236      
240-597 1 Gaithersburg MD   236      
240-597 7 Gaithersburg MD   236   2019-12-28   
240-597 9 Gaithersburg MD   236      
240-598 3 Hughesville MD   236   2019-06-24   
240-625 9 Hagerstown MD   240   2004-01-25   
240-635 3 Tompkinsville MD   236   2019-12-18   
240-641 A Washington Zone 3 MD SLSPMD91DS0  236      
240-641 9 Washington Zone 3 MD   236   2015-06-13   
240-642 3 Washington Zone 10 MD   236   2019-11-17   
240-648 3 Keedysville MD   240   2018-11-20   
240-649 3 Smithsburg MD   240   2018-11-20   
240-649 8 Smithsburg MD   240   2023-10-28   
240-650 1 Washington Zone 3 MD   236   2012-09-15   
240-652 7 Mechanicsville MD   236   2013-10-26   
240-653 A Laurel (Baltimore LATA) MD BLTQMD01DS0  238      
240-653 3 Laurel (Baltimore LATA) MD   238   2020-03-18   
240-653 5 Laurel (Baltimore LATA) MD   238   2018-11-18   
240-656 6 Frederick MD   240   2020-10-28   
240-659 1 Ashton MD   236   2020-02-27   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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