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: 649

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-649 A Sparrows Point MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-649 0 Sparrows Point MD   829J PAETEC ITEL, LLC 238      
443-649 1 Sparrows Point MD   829J PAETEC ITEL, LLC 238      
443-649 2 Sparrows Point MD   829J PAETEC ITEL, LLC 238      
443-649 3 Sparrows Point MD   829J PAETEC ITEL, LLC 238      
443-649 4 Sparrows Point MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-11-25   
443-649 5 Sparrows Point MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-11-06   
443-649 6 Sparrows Point MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-649 7 Sparrows Point MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-04-16   
443-649 8 Sparrows Point MD   515J IP HORIZON LLC 238   2016-01-04   
443-649 9 Sparrows Point MD   829J PAETEC ITEL, LLC 238      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.