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
240-901 8 La Plata MD   236   2015-12-03   
240-915 6 New Market MD   240   2019-10-21   
240-916 7 Cumberland MD   240   2023-09-22   
240-933 9 Buckeystown MD   240   2023-10-27   
240-939 9 Washington Zone 11 MD   236   2023-09-22   
240-946 9 Washington Zone 14 MD   236   2022-03-31   
240-957 9 Damascus MD   236   2023-03-26   
240-961 3 Poolesville MD   236   2022-11-07   
240-966 9 Washington Zone 16 MD   236   2023-02-27   
240-975 9 Laurel (Baltimore LATA) MD   238   2023-09-22   
240-983 9 Hagerstown MD   240   2023-09-22   
240-986 1 Nanjemoy MD   236   2013-10-26   
301-298 1 Washington Zone 15 MD   236   2013-05-03   
301-298 7 Washington Zone 15 MD   236   2016-11-19   
301-298 8 Washington Zone 15 MD   236   2013-05-03   
301-307 5 Washington Zone 13 (Baltimore LATA) MD   238   2019-12-28   
301-329 0 Ashton (Baltimore LATA) MD   238   2013-05-04   
301-329 1 Ashton (Baltimore LATA) MD   238   2013-05-04   
301-349 1 Poolesville MD   236   2013-05-03   
301-364 9 Washington Zone 4 MD   236   2013-05-03   
301-383 8 Washington Zone 14 MD   236   2013-05-03   
301-383 9 Washington Zone 14 MD   236   2013-05-03   
301-444 6 Washington Zone 10 MD   236   2020-03-18   
301-494 8 Washington Zone 15 (Baltimore LATA) MD   238   2013-05-05   
301-494 9 Washington Zone 15 (Baltimore LATA) MD   238   2013-05-05   
301-579 0 Brandywine MD   236   2019-12-16   
301-591 6 Gaithersburg MD   236   2020-04-19   
301-618 0 Washington Zone 4 MD   236   2013-05-03   
301-679 6 Washington Zone 12 MD   236   2013-05-03   
301-690 8 Leonardtown MD   236   2013-05-03   
301-690 9 Leonardtown MD   236   2013-05-03   
301-691 5 Poolesville MD   236   2013-05-03   
301-708 0 Laurel (Baltimore LATA) MD   238   2013-05-04   
301-708 2 Laurel (Baltimore LATA) MD   238   2013-05-04   
301-715 8 Washington Zone 15 MD   236   2016-11-19   
301-719 5 Washington Zone 16 MD   236   2020-04-15   
301-720 0 Brandywine MD   236   2013-05-03   
301-720 1 Brandywine MD   236   2013-05-03   
301-747 0 Washington Zone 6 MD   236   2015-06-06   
301-804 0 Ashton MD   236   2013-05-03   
301-804 1 Ashton MD   236   2013-05-03   
301-822 9 Washington Zone 11 MD   236      
301-880 9 Lexington Park-Great Mills MD   236   2013-05-03   
301-888 8 Washington Zone 16 MD   236   2012-04-02   
301-917 9 Washington Zone 10 MD   236   2013-05-03   
301-939 0 Washington Zone 13 MD   236   2020-04-19   
301-962 2 Washington Zone 11 MD   236   2019-03-07   
301-965 8 Washington Zone 6 MD   236   2013-10-25   
301-966 0 Washington Zone 12 MD   236   2013-05-03   
301-971 0 Washington Zone 6 MD   236   2012-09-15   

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

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