Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 515 [Rate centres in NPA 515] [Dial plan for NPA 515]

NXX: 307

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
515-307 A Williams IA DESMIADTX7X  751F MCC TELEPHONY OF IOWA, LLC - IA 632      
515-307 1 Williams IA DESMIADTX7X  751F MCC TELEPHONY OF IOWA, LLC - IA 632      
515-307 3 Williams IA   624H ONVOY SPECTRUM, LLC 632      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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