Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 970 [Rate centres in NPA 970] [Dial plan for NPA 970]

NXX: 637

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-637 A Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-637 0 Durango CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2024-10-10   
970-637 1 Durango CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2024-11-27   
970-637 2 Durango CO   6529 T-MOBILE USA, INC. 656   2025-11-10   
970-637 5 Durango CO   6529 T-MOBILE USA, INC. 656   2025-07-27   
970-637 6 Durango CO   6529 T-MOBILE USA, INC. 656   2025-09-18   
970-637 7 Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2024-10-11   
970-637 8 Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2024-10-11   
970-637 9 Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2024-07-26   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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