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: 507 [Rate centres in NPA 507] [Dial plan for NPA 507]

NXX: 973

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-973 A Iona MN ROCHMNHI9MD  939H COMMIO, LLC 620      
507-973 0 Iona MN ROCHMNHI9MD  939H COMMIO, LLC 620   2023-11-26   
507-973 1 Iona MN ROCHMNHI9MD  939H COMMIO, LLC 620   2023-11-26   
507-973 2 Iona MN ROCHMNHI9MD  939H COMMIO, LLC 620   2023-11-26   
507-973 3 Iona MN ROCHMNHI9MD  939H COMMIO, LLC 620   2023-11-26   
507-973 4 Iona MN ROCHMNHI9MD  939H COMMIO, LLC 620   2023-11-26   
507-973 9 Iona MN ROCHMNROXRX  073H TELNYX LLC 620   2023-12-22   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.