Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 664 [Rate centres in NPA 664] [Dial plan for NPA 664]

NXX: 857

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
664-857 A Plymouth RT SWCHRTUNKNO  189J CONVERGE SOLUTIONS MONTSERRAT LTD. 830      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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