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: 918 [Rate centres in NPA 918] [Dial plan for NPA 918]

NXX: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
918-574 A Tulsa OK TULSOKTBDS1  9533 SOUTHWESTERN BELL 538      
918-574 0 Tulsa OK TULSOKTBDS1  9533 SOUTHWESTERN BELL 538      
918-574 1 Tulsa OK TULUOKXOGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 538   2008-10-12   
918-574 2 Tulsa OK TULSOKTBXKZ  318J COMCAST IP PHONE, LLC 538   2008-09-30   
918-574 3 Tulsa OK TULSOKTBDS1  9533 SOUTHWESTERN BELL 538      
918-574 4 Tulsa OK TULSOKDV2MD  6529 T-MOBILE USA, INC. 538   2008-09-12   
918-574 5 Tulsa OK TULSOKDV2MD  6529 T-MOBILE USA, INC. 538   2009-03-26   
918-574 6 Tulsa OK TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2010-01-11   
918-574 7 Tulsa OK TULSOKTBDS1  9533 SOUTHWESTERN BELL 538      
918-574 8 Tulsa OK TULSOKTBXKZ  318J COMCAST IP PHONE, LLC 538   2009-11-27   
918-574 9 Tulsa OK TULSOKTBDS1  9533 SOUTHWESTERN BELL 538      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.