Why choose westcon comstor? Westcon-Comstor partners with vendors of all sizes from large global technology leaders to regional born-in-the-cloud startups looking to expand their opportunities in region or around the world.How do i contact corcor corporate headquarters? Corporate Headquarters. 44201 Nobel Drive. Fremont, CA 94538. Main Phone: 510-656-3333. Main Fax: 510-668-3777. Sales: 800-756-9888. Click here for driving directions.Where is comstar located in germantown? COMSTAR GERMANTOWN 12900-B Cloverleaf Center Drive Germantown, MD 20874 Toll Free: 800.498.1206 Phone: 301.670.3228