phone number for cox
Contact Cox Today! 1  Cox Communications Customer Service Phone Number 1-800-234-3993 Best For: Existing Customers, Customer Service Concerns, Adding Services, Address Changes, Bill Pay, General Inquiries. 2  Cox Home Networking Support Phone Number 1-855-766-9812, 1-877-891-2899 Best For: Existing Customers, Tech Support, Internet Customers.