Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 918 [Rate centres in NPA 918] [Dial plan for NPA 918]

NXX: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
918-437 A Tulsa OK TULSOKGERSC  9533 SOUTHWESTERN BELL 538      
918-437 0 Tulsa OK   9533 SOUTHWESTERN BELL 538      
918-437 1 Tulsa OK   9533 SOUTHWESTERN BELL 538      
918-437 2 Tulsa OK   9533 SOUTHWESTERN BELL 538      
918-437 3 Tulsa OK   9533 SOUTHWESTERN BELL 538      
918-437 4 Tulsa OK   9533 SOUTHWESTERN BELL 538      
918-437 5 Tulsa OK   9533 SOUTHWESTERN BELL 538      
918-437 6 Tulsa OK   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 538   2025-11-14   
918-437 7 Tulsa OK   9533 SOUTHWESTERN BELL 538      
918-437 8 Tulsa OK   9533 SOUTHWESTERN BELL 538      
918-437 9 Tulsa OK   9533 SOUTHWESTERN BELL 538      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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