Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 539 [Rate centres in NPA 539] [Dial plan for NPA 539]

NXX: 414

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
539-414 A Porum OK TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538      
539-414 2 Porum OK TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2017-11-30   
539-414 4 Porum OK   145J TERRA NOVA TELECOM INC. 538   2025-07-12   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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