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: 373

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-373 A Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-373 0 Ocean City MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-14   
443-373 1 Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-373 2 Ocean City MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2016-12-04   
443-373 3 Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242      
443-373 4 Ocean City MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2019-11-26   
443-373 5 Ocean City MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2024-07-15   
443-373 6 Ocean City MD   145J TERRA NOVA TELECOM INC. 242   2022-11-07   
443-373 7 Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242   2004-11-01   
443-373 8 Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242   2004-10-13   
443-373 9 Ocean City MD SLBRMDSCXMD  5562 METROPCS, INC. 242      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.