Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 806 [Rate centres in NPA 806] [Dial plan for NPA 806]

NXX: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
806-677 A Amarillo TX AMRLTXFLDS0  9533 SOUTHWESTERN BELL 546      
806-677 0 Amarillo TX   9533 SOUTHWESTERN BELL 546      
806-677 1 Amarillo TX   9533 SOUTHWESTERN BELL 546      
806-677 2 Amarillo TX   9533 SOUTHWESTERN BELL 546      
806-677 3 Amarillo TX   6529 T-MOBILE USA, INC. 546   2007-04-05   
806-677 4 Amarillo TX   6529 T-MOBILE USA, INC. 546   2007-04-05   
806-677 5 Amarillo TX   9533 SOUTHWESTERN BELL 546      
806-677 6 Amarillo TX   6529 T-MOBILE USA, INC. 546   2007-04-05   
806-677 7 Amarillo TX   9533 SOUTHWESTERN BELL 546      
806-677 8 Amarillo TX   6529 T-MOBILE USA, INC. 546   2006-12-20   
806-677 9 Amarillo TX   6529 T-MOBILE USA, INC. 546   2006-12-20   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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