Area Code 307-638 Map and Location
Phone number details for 307-638 numbers
The 307-638 exchange is serviced by the following companies within the CHEYENNE ratecenter.
QWEST CORPORATION
Call are routed trough OCN 9636 and CLLI - CHYNWYMADS0 (Common Language Location Identifier Code) and Point of Interface (POI) switch which is located in CHEYENNE MAIN.
Working 307-638-xxxx Local Exchanges
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