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]

NXX: 954

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-954 A Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-954 0 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-27   
443-954 1 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-27   
443-954 2 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-27   
443-954 3 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-27   
443-954 4 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-27   
443-954 5 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-27   
443-954 6 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-27   
443-954 7 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-27   
443-954 8 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-27   
443-954 9 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-27   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.