Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 810 [Rate centres in NPA 810] [Dial plan for NPA 810]

NXX: 639

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
810-639 A Montrose MI MTRSMIXIDS0  0671 BRIGHTSPEED OF CENTRAL MICHIGAN, INC 340      

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

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