Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 971 [Rate centres in NPA 971] [Dial plan for NPA 971]

NXX: 255

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
971-255 A Portland OR PTLJORIY0MD  5562 METROPCS, INC. 672      
971-255 0 Portland OR   318J COMCAST IP PHONE, LLC 672   2006-04-30   
971-255 1 Portland OR   318J COMCAST IP PHONE, LLC 672   2006-04-30   
971-255 2 Portland OR   6529 T-MOBILE USA, INC. 672   2006-05-19   
971-255 3 Portland OR   6529 T-MOBILE USA, INC. 672   2007-01-31   
971-255 4 Portland OR   7172 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 672   2006-03-29   
971-255 5 Portland OR   7172 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 672   2006-03-29   
971-255 6 Portland OR   6529 T-MOBILE USA, INC. 672   2006-03-11   
971-255 7 Portland OR   5562 METROPCS, INC. 672   2006-03-18   
971-255 8 Portland OR   5562 METROPCS, INC. 672   2006-04-07   
971-255 9 Portland OR   6010 NEW CINGULAR WIRELESS PCS, LLC 672   2006-06-22   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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