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.

NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

<< 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 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-366 A Salisbury MD SLBRMDSC2MD  5562 METROPCS, INC. 242      
443-366 0 Salisbury MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
443-366 1 Salisbury MD SLBRMDSC2MD  5562 METROPCS, INC. 242      
443-366 2 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-366 3 Salisbury MD SLBRMDSC2MD  5562 METROPCS, INC. 242      
443-366 4 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-366 5 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-366 6 Salisbury MD SLBRMDSC2MD  5562 METROPCS, INC. 242      
443-366 7 Salisbury MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
443-366 8 Salisbury MD SLBRMDSC2MD  5562 METROPCS, INC. 242      
443-366 9 Salisbury MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
443-367 A Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
443-367 0 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
443-367 1 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-367 2 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
443-367 3 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
443-367 4 Columbia MD CLMAMDJTBMD  2589 US LEC OF MARYLAND, INC. 238      
443-367 5 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
443-367 6 Columbia MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-367 7 Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
443-367 8 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-367 9 Columbia MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-368 A Westminster MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-369 A Bel Air MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-370 A Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-370 0 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-370 1 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-370 2 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-370 3 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-370 4 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-370 5 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-370 6 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-370 7 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-370 8 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-370 9 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-371 A Bel Air MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-371 0 Bel Air MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-371 1 Bel Air MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-371 2 Bel Air MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-371 3 Bel Air MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-371 4 Bel Air MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-371 5 Bel Air MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238      
443-371 6 Bel Air MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-371 7 Bel Air MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-371 9 Bel Air MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-372 A Edgewood MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-372 0 Edgewood MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-372 1 Edgewood MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-372 2 Edgewood MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-372 3 Edgewood MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-372 4 Edgewood MD   145J TERRA NOVA TELECOM INC. 238      
443-372 5 Edgewood MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-372 6 Edgewood MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-372 7 Edgewood MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-372 8 Edgewood MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-372 9 Edgewood MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-373 A Ocean City MD   5562 METROPCS, INC. 242      
443-373 0 Ocean City MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
443-373 1 Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-373 2 Ocean City MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242      
443-373 3 Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-373 4 Ocean City MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242      
443-373 5 Ocean City MD   876D ONVOY, LLC - MD 242      
443-373 6 Ocean City MD SLBRMD906MD  145J TERRA NOVA TELECOM INC. 242      
443-373 7 Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-373 8 Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-373 9 Ocean City MD   5562 METROPCS, INC. 242      
443-374 A Aberdeen MD BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 236      
443-374 0 Aberdeen MD BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 236      
443-374 1 Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
443-374 2 Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
443-374 3 Aberdeen MD BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 236      
443-374 4 Aberdeen MD BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 236      
443-374 5 Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
443-374 6 Aberdeen MD BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 236      
443-374 7 Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
443-374 8 Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
443-374 9 Aberdeen MD BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 236      
443-375 A Hampstead MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-375 0 Hampstead MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-375 1 Hampstead MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-375 2 Hampstead MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-375 3 Hampstead MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-375 4 Hampstead MD BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238      
443-375 5 Hampstead MD   876D ONVOY, LLC - MD 238      
443-375 6 Hampstead MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-375 7 Hampstead MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-375 8 Hampstead MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-375 9 Hampstead MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-376 A Dundalk MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-376 0 Dundalk MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-376 1 Dundalk MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-376 2 Dundalk MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-376 3 Dundalk MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-376 4 Dundalk MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-376 5 Dundalk MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-376 6 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-376 7 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-376 8 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-376 9 Dundalk MD   2593 CORE COMMUNICATIONS, INC.- MD 238      

<< 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 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.