Optimum Headquarters & Corporate Office

About Optimum

Optimum Communications, Inc. — formerly known as Altice USA — is one of the largest telecommunications and cable companies in the United States, delivering high-speed internet, fiber broadband, digital TV, mobile, and voice services to approximately 4.2 million broadband customers across 21 U.S. states. Founded as Cablevision in 1973 by Charles Dolan in Bethpage, New York, the company was acquired by French-Israeli billionaire Patrick Drahi’s Altice Group in 2016 and rebranded to Altice USA. In November 2025, Altice USA completed a full corporate rebrand to Optimum Communications, Inc., consolidating all services under the Optimum brand — which has been the consumer-facing name since 2018. The company trades on the Nasdaq Stock Exchange under the ticker symbol OPTU and is led by Chairman and Chief Executive Officer Dennis Mathew. Optimum reported $8.6 billion in total revenue for full year 2025 and employs approximately 9,500 people. The company’s corporate headquarters is located at 1 Court Square West in Long Island City, Queens, New York, with a key operational campus at 1111 Stewart Avenue in Bethpage, New York — the former Cablevision headquarters where the company’s technical and operational infrastructure teams are centered.

Quick Information

Industry

Telecommunications — Cable Internet, Fiber Broadband, TV & Mobile Services

Founded

1973, Bethpage, New York

Number of Employees

Approximately 9,500 employees across all corporate and operational locations

Corporate Office Hours

Monday to Friday, 9:00 AM – 5:00 PM Eastern Time for corporate operations. Customer service is available Monday through Friday, 8:00 AM to 10:00 PM ET, and Saturday through Sunday, 8:00 AM to 8:00 PM ET.

Email

contact@optimum.com — general inquiries

Website

www.optimum.com

Contact Page

www.optimum.com/support

Careers Page

www.optimum.com/careers

Products & Services

Optimum offers a comprehensive connectivity portfolio for residential and business customers spanning internet, fiber, television, mobile, and voice services across its service territories in the northeastern and southern United States. Their full range of products and services includes:

• Optimum Internet — cable and fiber broadband tiers from 300 Mbps up to 8 Gig symmetrical fiber speeds with 99.9% reliability
• Optimum Fiber — 100% fiber-to-the-home broadband across an expanding footprint with over 700,000 fiber customers as of 2025
• Optimum Mobile — wireless mobile service running on America’s largest 5G network, offering competitive pricing with no annual contracts
• Optimum TV — digital cable television with hundreds of channels, HD on every TV, cloud DVR, and on-demand content
• Optimum Voice — digital home phone service with unlimited nationwide calling and voicemail
• Optimum Complete — bundled packages combining internet, TV, and mobile services at discounted rates
• Optimum Stream — a Xumo streaming device and streaming platform available to Optimum customers as an alternative to traditional cable
• Optimum WiFi — a managed whole-home Wi-Fi solution with Optimum’s advanced router and the Optimum App for network management
• Lightpath — Optimum’s enterprise and wholesale fiber networking brand serving enterprise businesses, healthcare, education, and government with dedicated fiber and SD-WAN
• Optimum Business — internet, phone, and TV services tailored for small and medium businesses
• Optimum Business Fiber — dedicated fiber broadband for business customers with symmetrical speeds and guaranteed SLAs

Corporate Phone Numbers

Main Customer Service Number

1-888-276-5255 — primary Optimum customer service and billing line for all internet, TV, phone, and general account inquiries. Available Monday through Friday 8:00 AM to 10:00 PM ET, Saturday and Sunday 8:00 AM to 8:00 PM ET.

Technical Support

1-877-584-2495 — dedicated technical support line for all internet, TV, and phone service issues including outages, equipment troubleshooting, and service calls. Available Monday through Friday 8:00 AM to 1:00 AM ET, Saturday and Sunday 8:00 AM to 10:00 PM ET.

Order New Service

1-833-926-3027 — toll-free line for ordering new Optimum internet, TV, and phone service. Available 24 hours a day, 7 days a week.

Optimum Mobile Customer Service

1-866-200-7186 — dedicated Optimum Mobile customer service line. Available Monday through Friday 8:00 AM to 10:00 PM ET, Saturday and Sunday 8:00 AM to 8:00 PM ET.

Optimum Business Customer Service

1-888-276-5255 — also handles business account inquiries for NY, CT, NJ, and PA. For all other areas: 1-800-490-9604. Available Monday through Friday 9:00 AM to 9:00 PM ET, Saturday 9:00 AM to 5:00 PM ET.

New Jersey Customer Service

1-973-230-6048 — regional customer service line for New Jersey customers.

Connecticut Customer Service

1-203-870-2583 — regional customer service line for Connecticut customers.

Long Island Customer Service

1-631-393-0637 — regional customer service line for Long Island, New York customers.

NY: Bronx / Brooklyn / Westchester

1-718-860-3514 — regional customer service line for Bronx, Brooklyn, and Westchester, New York customers.

Corporate Office Number

1-888-592-3861 — main Optimum corporate headquarters direct line. Available Monday through Friday during regular business hours.

How to Reach a Real Person at Optimum

The fastest way to speak with a live Optimum representative is to call 1-888-276-5255. When the automated system answers, you will be prompted to enter or say the 10-digit phone number on your account. After verification, listen to the menu and press the number that best matches your inquiry. To bypass the automated menu and reach a live agent, press 0 repeatedly at any prompt or say “representative” clearly when prompted. Lines are available Monday through Friday from 8:00 AM to 10:00 PM ET and Saturday through Sunday from 8:00 AM to 8:00 PM ET. For the shortest wait times, calling on weekday mornings before 9:30 AM ET is recommended.

You can also connect with a live Optimum agent through live chat at optimum.com/support, which is often faster for billing questions, outage status updates, and equipment issues. Optimum Mobile customers can chat with support 24/7 through the Optimum app or by dialing 611 directly from their Optimum Mobile phone. Optimum is also responsive on social media — the @OptimumHelp account on X (Twitter) is a well-known escalation channel where dedicated support agents actively respond to customer service complaints.

Optimum Headquarters & Corporate Office Address

Optimum Communications, Inc. operates its corporate headquarters at 1 Court Square West in Long Island City, Queens, New York — a modern glass office tower situated at the intersection of Queens Boulevard and 44th Drive, directly across from Citigroup Center and steps from the Queensboro Plaza subway station. This location serves as the company’s official registered corporate address and houses Optimum’s executive leadership, investor relations, legal, corporate finance, and strategy functions. Optimum also maintains its primary operational campus at the company’s historic base at 1111 Stewart Avenue in Bethpage, New York — the former Cablevision headquarters on Long Island — where the majority of technical operations, engineering, network infrastructure, and field operations teams are based.

Optimum Communications, Inc. — Corporate Headquarters

1 Court Square West
Long Island City, Queens, New York 11101
United States

Optimum — Operational Campus (Former Cablevision HQ)

1111 Stewart Avenue
Bethpage, New York 11714
United States

Optimum — Plano, Texas Office

5830 Granite Parkway
Plano, Texas 75024
United States

For all formal written correspondence, legal notices, and escalated written complaints, use the Long Island City corporate headquarters address above. Include your full name, account number, service address, return contact details, and a clear subject line.

How to File a Complaint Against Optimum

Step 1 — Contact Customer Service Directly
Call Optimum’s main customer service line at 1-888-276-5255. Clearly describe your complaint, provide your account information, and ask the representative to formally log your concern and provide a case reference number. Most billing errors, service outage credits, fee disputes, and equipment issues can be initiated at this stage. For technical service issues, call the dedicated technical support line at 1-877-584-2495.

Step 2 — Request Escalation to a Supervisor
If the first representative cannot resolve your complaint, ask immediately to be transferred to a supervisor or the Customer Retention team. Supervisors have greater authority to issue bill credits, waive early termination fees, escalate service tickets, and override standard decisions. Always document the supervisor’s name, date and time of contact, and all commitments made.

Step 3 — Submit a Formal Written Complaint
Email contact@optimum.com with your full name, account number, service address, a detailed description of your complaint, all previous contacts made, and the resolution you are requesting. Include relevant screenshots, bill copies, or documentation as attachments.

Step 4 — Contact the Corporate Office
If your complaint remains unresolved, call the corporate headquarters at 1-888-592-3861 or write a formal complaint letter to Optimum Communications, Inc., 1 Court Square West, Long Island City, New York 11101, Attn: Customer Relations. Document all prior resolution attempts and clearly state the outcome you are requesting.

Step 5 — File a Complaint With the FCC
File a formal complaint with the Federal Communications Commission at consumercomplaints.fcc.gov. The FCC accepts complaints from cable, internet, and phone service customers and requires the company to respond formally. Filing an FCC complaint often prompts a faster escalated response from Optimum’s regulatory affairs team.

Step 6 — Contact Your State Public Service Commission
New York customers can file a complaint with the New York State Department of Public Service at dps.ny.gov or by calling 1-800-342-3377. New Jersey customers can contact the New Jersey Board of Public Utilities at nj.gov/bpu. State regulators can investigate complaints and apply direct regulatory pressure for resolution.

Step 7 — File a BBB Complaint
File a public complaint with the Better Business Bureau at www.bbb.org. Optimum Communications is registered with the BBB and a public complaint filing typically prompts a faster corporate response within 14 days.