About this number
(906) 644 is a landline based telephone number operated by Centurytel Of Upper Michigan I and is located in zip code 49817 in the city of Cooks, Michigan, which is in Delta County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 906 and Network Numbering Exchange (NXX - also known as a prefix) of 644. It has an Operating Company Number (OCN) of 689. A Common Language Location Identifier (CLLI) of GRDNMIXGRS0. As well as a Local access and transport area (LATA) of 342. Zip code 49817 has a population of 615 as of the 2010 census.