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.

Agra, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
539-837 A TULSOKTBXHZ  516J TON80 COMMUNICATIONS, LLC 538      
539-837 4 TULSOKTBXHZ  516J TON80 COMMUNICATIONS, LLC 538   2022-03-16   
918-375 A TRYNOKXADS0  1977 CENTRAL OKLAHOMA TELEPHONE CO., L.L.C. 538      
918-375 0 TRYNOKXADS0  1977 CENTRAL OKLAHOMA TELEPHONE CO., L.L.C. 538      
918-375 2 TRYNOKXADS0  1977 CENTRAL OKLAHOMA TELEPHONE CO., L.L.C. 538      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.