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: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

NXX: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-300 A Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654      
307-300 0 Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-12-11   
307-300 1 Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2021-07-11   
307-300 2 Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2021-07-11   
307-300 3 Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-12-11   
307-300 4 Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-09-05   
307-300 5 Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-09-05   
307-300 6 Powell WY CHYNWYMAX9X  879G TELEPORT COMMUNICATIONS AMERICA WY-LLC 654   2020-09-07   
307-300 7 Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-12-19   
307-300 8 Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-12-19   
307-300 9 Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2023-06-01   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.