Hours Of Operations Comcast Service Center California Sunnyvale Comcast Service Center Hours of Operation and Locations in Sunnyvale, CA 4.5 - 19 votes 1 Locations in Sunnyvale www.customer.xfinity.com Comcast Service Center Hours Category: Electronics Comcast Service Center - Sunnyvale, CA 94087 717 E El Camino Real, Ste 8(800) 945-2288 View Store Details Explore SunnyvaleView More Apparel CostcoRoss Dress for LessDd's DISCOUNTSH & MCarhartt Sports CostcoTargetSports AuthorityBig 5 Sporting GoodsLA Fitness Jewelry CostcoAvon Recommend For You Xfinity Store R & R Solutions Studio Xfinity Dm Computers Clear Internet Harmony Computer Solutions Ribbons Express Incorporated Fdm Group Incorporated Ventures Unlimited Incorporated Concerto Networks