Optimum corporate office and headquarters are located at 1 Court Square West, Long Island City, NY 11101. The Optimum corporate office phone number is 1-516-803-2300. Customers seeking billing, outage, cancellation, equipment, mobile, or technical assistance should normally use the appropriate Optimum customer-support route before contacting the corporate office.
Optimum Corporate Office Headquarters and Contact Information
- Company Name: Optimum Communications, Inc.
- Former Corporate Name: Altice USA, Inc.
- Stock Symbol: OPTU
- Optimum Corporate Address: 1 Court Square West, Long Island City, NY 11101
- Optimum Corporate Office Phone Number: 1-516-803-2300
- Existing Customer Support Listed on Optimum.com: 1-877-794-2724
- New Customer Sales and Availability: 1-877-694-9474
- Official Website: Optimum.com
- Official Contact Page: Contact Optimum
- Customer Support: Optimum Support Contact Options
- Service Outages: Optimum Outage Information
- Store Locator: Find an Optimum Store
- Investor Relations: Optimum Investor Relations
- Careers: Optimum Careers
Important: The corporate office phone number is not the primary number for routine billing, internet, TV, mobile, equipment, or technical-support requests. Optimum support numbers can vary by service area, so customers should confirm the correct route using the official contact page, account portal, My Optimum app, bill, or local store.
Is Optimum Still Altice USA?
Altice USA, Inc. changed its corporate name to Optimum Communications, Inc. effective November 7, 2025. The company subsequently changed its New York Stock Exchange ticker symbol from ATUS to OPTU on November 19, 2025.
Older documents, bills, news articles, directory listings, and customer searches may still refer to Altice USA, the Altice corporate office, Altice headquarters, ATUS, or CSC Holdings. The current publicly traded corporate name is Optimum Communications, Inc.
Optimum Leadership and Ownership
- Chairman and Chief Executive Officer: Dennis Mathew
- Publicly Traded: Yes
- Stock Exchange: New York Stock Exchange
- Ticker Symbol: OPTU
- Controlling Shareholder: Patrick Drahi through Next Alt
Optimum Communications operates broadband, video, mobile, voice, advertising, business communications, and related services. It also operates through subsidiaries and affiliated entities, including CSC Holdings, LLC.
Optimum Customer Service and Regional Support Numbers
Optimum maintains different support numbers for certain service areas. Customers should use the number associated with the location where the service is installed.
- Nassau and Suffolk Counties, New York: 1-631-393-0637
- Bronx, Brooklyn, and Westchester, New York: 1-718-860-3514
- Connecticut: 1-203-870-2583
- New Jersey and Pennsylvania: 1-973-230-6048
- Hendersonville and West Jefferson, North Carolina: 1-877-491-0050
- All Other Areas: 1-877-694-9474
- Existing Customer Support Listed on Optimum.com: 1-877-794-2724
- Online Chat: Optimum Chat and Contact Options
- Account and Self-Service Support: Optimum.net
Because Optimum maintains multiple regional and account-specific support routes, verify the appropriate number on the official contact page or on your current billing statement before providing account information.
Optimum Business, Mobile, Bulk, and Accessibility Contacts
- Optimum Business Customer Service and Billing for NY, CT, NJ, PA, and Selected NC Areas: 1-888-276-5255
- Optimum Business Customer Service for All Other Areas: 1-800-490-9604
- Optimum Business Sales for NY, CT, NJ, PA, and Selected NC Areas: 1-866-209-1099
- Optimum Business Sales for All Other Areas: 1-800-819-1069
- Optimum Mobile Customer Service: 1-866-200-7186
- Optimum Mobile from an Optimum Mobile Phone: Dial 611
- Optimum Bulk Communities: 1-888-565-5785
- Accessibility Support: 1-833-792-2122
- Optimum Business Support: Optimum Business Contact Page
- Optimum Mobile Support: Optimum Mobile Support Center
- Accessibility Information: Optimum Accessibility Services
How to Escalate a Complaint with Optimum
Customers commonly seek the Optimum corporate office after experiencing unresolved concerns involving billing, cancellation, equipment returns, internet service, television service, mobile service, outages, installation, missed appointments, refunds, collections, account access, or customer-support follow-up.
- Contact the correct support department: Use the number associated with your service area or contact Optimum through its official website, app, chat, or account portal.
- Document the problem: Record the date, time, representative’s name, case number, amount disputed, technician appointment, service interruption, and any resolution promised.
- Request escalation: Ask for a supervisor or escalation specialist if the initial representative cannot resolve the issue.
- Request written confirmation: Obtain confirmation for cancellations, refunds, billing adjustments, payment arrangements, equipment returns, or account changes.
- Keep equipment-return evidence: Retain store receipts, shipping receipts, tracking information, serial numbers, and photographs of returned equipment.
- Use the corporate address when appropriate: Written corporate correspondence may be sent to Optimum Communications, Inc., 1 Court Square West, Long Island City, NY 11101.
- Consider an external complaint: Unresolved communications-service complaints may be eligible for review by the FCC or an applicable state or local consumer-protection agency.
The corporate office cannot necessarily access or immediately correct every residential account. Include enough identifying information in private correspondence for Optimum to locate the account, but never publish account numbers, service addresses, passwords, payment details, or other sensitive information in a public comment.
Optimum Complaint Themes from Reader Reviews
Visible reader comments on this page are primarily complaint-focused. Reported themes include billing disputes, charges continuing after cancellation, difficulty reaching a supervisor, vacation-mode billing concerns, equipment-return charges, account corrections after a customer’s death, payment disputes, and dissatisfaction with customer-service follow-up.
These comments represent individual reader experiences and do not establish that every customer will experience the same outcome. Customers should retain billing statements, cancellation confirmations, return receipts, payment records, chat transcripts, emails, and case numbers when seeking a correction.
Optimum Billing and Payment Complaints
For an Optimum billing complaint, compare the disputed amount with the service agreement, previous bills, promotional terms, equipment charges, mobile charges, taxes, fees, credits, and payment history.
When contacting support, provide the specific billing period and disputed line item. Ask the representative to explain the charge, identify when it began, confirm whether it will recur, and provide a case number for any promised adjustment or refund.
Optimum Cancellation and Equipment Return Complaints
When canceling Optimum service, request written confirmation of the cancellation date, the expected final bill, any remaining balance, and the equipment-return requirements. Confirm whether recurring payments or Auto Pay will stop automatically.
If returning a modem, gateway, router, cable box, remote, or other device, keep the store receipt or shipping documentation. Record the tracking number and, when available, the equipment serial number. These records can help if an unreturned-equipment fee later appears on the account.
Optimum Outages, Technical Problems, and Technician Complaints
For an outage, intermittent connection, slow internet, television problem, home-phone issue, installation delay, or missed technician appointment, document:
- The service address and affected services
- The dates and approximate times of each interruption
- Any outage notices shown in the Optimum app or outage page
- Troubleshooting steps already completed
- Technician appointment windows and confirmation numbers
- Equipment replacements or service changes
- Credits or follow-up actions promised by representatives
Customers experiencing repeated interruptions may benefit from keeping a written service log. Ask for a case number and confirmation of any repair visit or service credit.
External Complaint Options for Optimum Customers
Optimum offers internet, television, mobile, and phone services, so the appropriate external complaint route depends on the type of service and the customer’s location.
- FCC Consumer Complaint Center: File an FCC Consumer Complaint
- FCC Informal Complaint Guide: How to File an Informal FCC Complaint
- USA.gov Cable and Television Complaint Guidance: Cable and TV Complaint Information
- State Consumer Protection: Customers may also consider their state attorney general, consumer-protection office, public utility agency, or local cable-franchising authority when applicable.
External agencies generally cannot replace the company’s normal customer-support process. Include case numbers, correspondence, bills, cancellation records, and other documentation when filing a complaint.
Optimum Fraud, Phishing, and Account Safety
Be cautious of fake Optimum support numbers, spoofed caller IDs, phishing emails, fake payment links, fraudulent outage-credit messages, and websites pretending to represent Optimum. Scammers may claim that service will be disconnected or that a refund is waiting in order to obtain payment details, passwords, Social Security numbers, or one-time security codes.
- Access your account through Optimum.com, Optimum.net, or the official app.
- Verify unfamiliar calls or messages using the phone number on your bill or the official Optimum contact page.
- Do not disclose passwords, full payment-card numbers, one-time passcodes, or Social Security numbers to unsolicited callers.
- Do not install remote-access software at the request of an unverified support caller.
- Confirm any promised refund, shutoff warning, outage credit, or billing adjustment by signing into the official account portal.
- Report suspected fraud to the Federal Trade Commission or the FBI Internet Crime Complaint Center when appropriate.
About Optimum Communications
Optimum Communications, Inc., formerly Altice USA, Inc., is a broadband communications provider offering internet, video, mobile, voice, and business services. The company serves residential and business customers across multiple states and also operates advertising and media businesses.
Customers may encounter the names Optimum, Optimum Mobile, Optimum Business, CSC Holdings, Altice USA, News 12, or Optimum Media in connection with different services, corporate entities, or operations.
Optimum Competitors
Optimum competes with national and regional broadband, cable, fiber, television, phone, and mobile providers. Competitors and related corporate-office resources include:
- AT&T Corporate Office
- Verizon Corporate Office
- Comcast Corporate Office
- Xfinity Corporate Office
- Spectrum Corporate Office
- Cox Corporate Office
Other competitors can include Frontier, T-Mobile Home Internet, Verizon 5G Home Internet, regional fiber companies, satellite providers, and local cable companies, depending on the service area.
Related Optimum Resources
- Official Optimum Contact Page
- Optimum Regional Customer Support
- Optimum Outage Information
- Optimum Store Locator
- Optimum Mobile Support
- Optimum Business Support
- Optimum Accessibility Services
- Optimum Investor Relations
- Optimum Customer Service Numbers, Reviews, and Complaints
- How to Investigate an Unrecognized Card or Bank Charge
Frequently Asked Questions About the Optimum Corporate Office
Where is the Optimum corporate office?
The Optimum corporate office and principal headquarters are located at 1 Court Square West, Long Island City, NY 11101.
What is the Optimum corporate office phone number?
The Optimum corporate office phone number is 1-516-803-2300. This is the company’s principal corporate telephone number and is not necessarily the best route for residential billing or technical support.
What is the Optimum customer service phone number?
Optimum customer service numbers vary by service area. Optimum.com lists 1-877-794-2724 for existing-customer assistance and 1-877-694-9474 for new service. Optimum also maintains regional support numbers for certain parts of New York, Connecticut, New Jersey, Pennsylvania, and North Carolina.
Is Altice USA the same company as Optimum?
Altice USA, Inc. changed its corporate name to Optimum Communications, Inc. in November 2025. Older documents and customer references may still use the Altice USA name or the former ATUS ticker symbol.
Who is the CEO of Optimum?
Dennis Mathew is the chairman and chief executive officer of Optimum Communications, Inc.
How do I complain to the Optimum corporate office?
Begin with the appropriate Optimum customer-support channel and request a case number or supervisor. If the issue remains unresolved, written correspondence may be sent to Optimum Communications, Inc., 1 Court Square West, Long Island City, NY 11101. Include copies rather than original documents and keep sensitive account information private.
How do I file an external complaint about Optimum?
Customers with unresolved internet, television, phone, mobile, billing, accessibility, or service complaints may consider the FCC Consumer Complaint Center. Depending on the issue and location, a state attorney general, consumer-protection office, utility agency, or local cable-franchising authority may also be relevant.
What records should I keep for an Optimum billing or cancellation complaint?
Keep billing statements, cancellation confirmations, payment receipts, equipment-return receipts, tracking numbers, chat transcripts, emails, technician appointment details, and case numbers. Do not publish these records or account information in a public comment.
Is CorporateOfficeHeadquarters.com affiliated with Optimum?
No. CorporateOfficeHeadquarters.com is an independent information and consumer-review website. It is not affiliated with Optimum Communications, Inc., Optimum.com, Optimum.net, Altice USA, CSC Holdings, or any Optimum store or regulator.
Why Trust CorporateOfficeHeadquarters.com?
CorporateOfficeHeadquarters.com has provided corporate headquarters addresses, office phone numbers, company contact information, consumer guidance, and public review pages since 2010. Information is reviewed using official company websites, investor-relations materials, regulatory filings, customer-support pages, government resources, and other reliable public sources when available.
Corporate contact information, leadership, support numbers, and service routes can change. Readers should verify current details with Optimum before sending payments, legal documents, equipment, confidential records, or sensitive account information.
Page Update Note
This Optimum corporate office page was updated on July 29, 2026. The update improved the page for searches involving Optimum corporate office, Optimum headquarters, Optimum corporate address, Optimum corporate phone number, Optimum main office, and Altice corporate office.
The update also corrected the Connecticut regional support number, clarified the distinction between corporate, existing-customer, new-customer, and regional support numbers, added current leadership and ownership information, improved the opening contact section, added a direct Optimum customer-service resource, refined the image SEO, and preserved the existing page URL.
Disclaimer
CorporateOfficeHeadquarters.com is an independent consumer information website and is not affiliated with, endorsed by, or sponsored by Optimum Communications, Inc., Optimum.com, Optimum.net, Altice USA, CSC Holdings, LLC, any Optimum store, the FCC, or any government agency.
Optimum, Altice, CSC Holdings, and related names, logos, trademarks, and service marks belong to their respective owners. Contact information, operating hours, leadership, services, and complaint procedures may change without notice. Verify important information directly with Optimum before sending money, equipment, confidential records, legal documents, or personal information.
Share Your Experience
Have you contacted the Optimum corporate office, customer service, billing department, technical support, Optimum Mobile, Optimum Business, a local store, a supervisor, or an external complaint agency? Share your experience below to help other readers understand how Optimum handles billing disputes, cancellations, refunds, equipment returns, outages, appointments, internet service, television service, mobile accounts, and complaint escalations.
Privacy warning: Do not post account numbers, service addresses, phone numbers, email addresses, passwords, one-time passcodes, payment-card details, bank information, equipment serial numbers, full bills, legal documents, or other sensitive personal information in a public review.