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: 922

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-922 A Edgewood MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-922 0 Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2019-01-05   
443-922 1 Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-02-08   
443-922 2 Edgewood MD   829J PAETEC ITEL, LLC 238   2006-03-31   
443-922 3 Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-10-19   
443-922 4 Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-04-09   
443-922 5 Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-03-05   
443-922 6 Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-03-05   
443-922 7 Edgewood MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-12-12   
443-922 8 Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-03-05   
443-922 9 Edgewood MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-12-12   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.