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: 2593 CORE COMMUNICATIONS, INC.- 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 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
443-587 3 Edgewood MD   238   2018-06-16   
443-587 5 Edgewood MD   238   2018-06-16   
443-587 6 Edgewood MD   238   2018-06-16   
443-587 9 Edgewood MD BLTMMD91GT0  238   2019-04-30   
443-588 6 Parkville MD BLTMMD91GT0  238   2019-05-01   
443-589 6 Cockeysville MD   238   2018-10-19   
443-592 A Elkridge MD BLTMMD91GT0  238      
443-592 5 Elkridge MD   238   2018-06-16   
443-592 6 Elkridge MD   238   2018-06-16   
443-592 7 Elkridge MD   238   2018-06-16   
443-595 2 Sparks-Glencoe MD   238   2018-06-16   
443-596 0 Essex MD   238   2018-06-16   
443-596 2 Essex MD BLTMMD91GT0  238   2019-04-30   
443-596 9 Essex MD   238   2018-06-16   
443-606 5 Fork MD   238   2018-06-16   
443-606 7 Fork MD   238   2018-10-22   
443-625 0 Fork MD   238   2018-10-22   
443-626 2 Chase MD BLTMMD91GT0  238   2019-04-30   
443-628 A Glen Burnie MD BLTMMDCHYMD  238      
443-628 0 Glen Burnie MD BLTMMD91GT0  238   2019-04-30   
443-628 2 Glen Burnie MD BLTMMD91GT0  238   2019-05-01   
443-628 3 Glen Burnie MD   238   2018-06-16   
443-628 4 Glen Burnie MD   238   2018-06-16   
443-628 5 Glen Burnie MD   238   2018-06-16   
443-639 1 Hampstead MD   238   2018-06-16   
443-644 0 Jarrettsville MD   238   2018-10-22   
443-644 2 Jarrettsville MD   238   2018-10-22   
443-644 3 Jarrettsville MD   238   2018-06-16   
443-644 4 Jarrettsville MD   238   2018-06-16   
443-644 5 Jarrettsville MD   238   2018-06-16   
443-644 6 Jarrettsville MD   238   2018-10-22   
443-644 7 Jarrettsville MD   238   2018-10-22   
443-644 8 Jarrettsville MD   238   2018-10-22   
443-644 9 Jarrettsville MD   238   2018-10-22   
443-645 2 Millersville MD BLTMMD91GT0  238   2019-03-29   
443-647 0 New Windsor MD   238   2018-06-16   
443-647 2 New Windsor MD BLTMMD91GT0  238   2019-03-29   
443-647 6 New Windsor MD   238   2018-06-16   
443-649 6 Sparrows Point MD BLTMMD91GT0  238   2019-07-31   
443-650 6 Reisterstown MD BLTMMD91GT0  238   2019-05-01   
443-650 9 Reisterstown MD   238   2018-06-16   
443-652 1 Towson MD   238   2018-10-23   
443-657 4 Randallstown MD   238   2018-10-23   
443-657 5 Randallstown MD   238   2018-10-23   
443-657 6 Randallstown MD   238   2018-10-23   
443-657 8 Randallstown MD   238   2018-10-23   
443-657 9 Randallstown MD   238   2018-10-23   
443-662 2 Sparks-Glencoe MD   238   2018-06-16   
443-662 3 Sparks-Glencoe MD   238   2018-06-16   
443-663 2 Woodlawn MD BLTMMD91GT0  238   2019-05-02   

<< 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 >>

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.