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: 416

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-416 A Pinedale WY   9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654      
307-416 0 Pinedale WY   9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2023-10-12   
307-416 1 Pinedale WY   9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2023-07-23   

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.