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.

Switch: BLTMMD91DS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-346 4 Silver Run MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-441 7 Elkton MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-452 4 Cardiff MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-525 7 Baltimore MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2016-01-31   
410-696 6 Ellicott City MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2016-01-19   
410-773 0 Cockeysville MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-776 0 Bel Air MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-871 4 Westminster MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-17   
410-940 0 Annapolis MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-946 0 Severna Park MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-970 8 Sykesville MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-982 A Baltimore MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238      
410-982 0 Baltimore MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-04   
443-507 4 Hampstead MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2016-01-31   
443-550 4 North Beach MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
443-583 2 Columbia MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2016-01-31   
667-788 A Westminster MD 2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.