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: HNVAMDAE3MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-232 A Baltimore MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-283 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-331 A Elkridge MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-351 A Baltimore MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-373 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-389 A Baltimore MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-408 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-434 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-445 A Baltimore MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-447 A Columbia MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-460 A Elkridge MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-473 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-475 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-492 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-607 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-640 A Baltimore MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-678 A Elkridge MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-681 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-731 A Annapolis MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-743 A Baltimore MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-748 A Ellicott City MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-806 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-839 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-890 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-894 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-899 A Towson MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-909 A Elkridge MD 6630 USA MOBILITY WIRELESS, INC. 238      
410-932 A Elkridge MD 6630 USA MOBILITY WIRELESS, INC. 238      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.