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: 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
301-518 A Washington Zone 3 MD WASKDCFNAMD  236      
301-520 A Washington Zone 3 MD WASKDCFNAMD  236      
301-525 1 Gaithersburg MD WASKDCFNAMD  236   2008-06-05   
301-525 2 Gaithersburg MD WASKDCFNAMD  236   2008-08-14   
301-525 3 Gaithersburg MD WASKDCFNAMD  236   2008-10-03   
301-525 4 Gaithersburg MD WASKDCFNAMD  236   2008-02-15   
301-525 5 Gaithersburg MD WASKDCFNAMD  236   2008-02-15   
301-525 6 Gaithersburg MD WASKDCFNAMD  236   2008-07-03   
301-525 7 Gaithersburg MD WASKDCFNAMD  236   2008-11-03   
301-525 8 Gaithersburg MD WASKDCFNAMD  236   2008-11-17   
301-525 9 Gaithersburg MD WASKDCFNAMD  236   2008-12-19   
301-532 0 Laurel (Baltimore LATA) MD BLTOMDKHBMD  238   2018-07-09   
301-532 1 Laurel (Baltimore LATA) MD BLTOMDKHBMD  238   2017-02-21   
301-532 2 Laurel (Baltimore LATA) MD BLTOMDKHBMD  238   2017-02-21   
301-542 2 Waldorf MD WASKDCFNAMD  236   2006-04-24   
301-542 3 Waldorf MD WASKDCFNAMD  236   2006-06-02   
301-542 4 Waldorf MD WASKDCFNAMD  236   2006-07-03   
301-542 5 Waldorf MD WASKDCFNAMD  236   2011-06-27   
301-542 6 Waldorf MD WASKDCFNAMD  236   2007-11-15   
301-542 7 Waldorf MD WASKDCFNAMD  236   2006-06-02   
301-542 9 Waldorf MD WASKDCFNAMD  236   2006-08-07   
301-550 0 Washington Zone 10 MD WASKDCFNAMD  236   2022-09-10   
301-550 1 Washington Zone 10 MD WASKDCFNAMD  236   2022-09-10   
301-569 A Gaithersburg MD WASKDCFNAMD  236      
301-569 0 Gaithersburg MD WASKDCFNAMD  236   2013-09-17   
301-569 1 Gaithersburg MD WASKDCFNAMD  236   2014-05-01   
301-569 3 Gaithersburg MD WASKDCFNAMD  236   2014-06-01   
301-575 4 Laurel MD WASKDCFNAMD  236   2006-01-02   
301-575 6 Laurel MD WASKDCFNAMD  236   2006-08-07   
301-575 7 Laurel MD WASKDCFNAMD  236   2006-08-07   
301-580 A Washington Zone 3 MD WASKDCFNAMD  236      
301-602 A Washington Zone 3 MD WASKDCFNAMD  236      
301-606 A Frederick MD FRDRMDFRXSX  240      
301-609 0 Waldorf MD WASKDCFNAMD  236   2007-02-02   
301-609 1 Waldorf MD WASKDCFNAMD  236   2007-02-02   
301-609 2 Waldorf MD WASKDCFNAMD  236   2007-03-05   
301-635 8 Washington Zone 5 MD WASKDCFNAMD  236   2022-11-03   
301-635 9 Washington Zone 5 MD WASKDCFNAMD  236   2023-09-07   
301-636 0 Washington Zone 5 MD WASKDCFNAMD  236   2019-10-28   
301-639 A Frederick MD FRDRMDFRXSX  240      
301-641 A Washington Zone 3 MD WASKDCFNAMD  236      
301-643 A Waldorf MD WASKDCFNAMD  236      
301-651 A Washington Zone 3 MD WASKDCFNAMD  236      
301-673 0 Frederick MD FRDRMDFRXSX  240   2023-04-22   
301-691 8 Poolesville MD WASKDCFNAMD  236   2015-02-18   
301-704 A Washington Zone 3 MD WASKDCFNAMD  236      
301-706 A Washington Zone 3 MD WASKDCFNAMD  236      
301-708 A Laurel (Baltimore LATA) MD BLTOMDKHBMD  238      
301-708 1 Laurel (Baltimore LATA) MD BLTOMDKHBMD  238   2011-11-18   
301-708 4 Laurel (Baltimore LATA) MD BLTOMDKHBMD  238   2014-09-01   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.