We've detected that you're using an older version of Internet Explorer

Optimum.net is compatible with a wide range of browsers. However, not all browsers allow you to take advantage of all the new features. We strongly recommend that you upgrade to a more current browser.

goto Internet Explorer download goto Chrome download goto Firefox download

You need to change your Internet Explorer Compatibility View setting to get the most from the new Optimum.net

Click here for more info.

Customer service

Email us

You will receive an email response within 30 minutes.


Live, Local, 24/7 Customer Service

Live chat
Chat for help
@OptimumHelp
Tweet for help
Call us
Local support

Optimum Store


Other ways to reach us

Corporate Headquarters

  • Cablevision System Corp.
  • 1111 Stewart Avenue
  • Bethpage, NY 11714
Get direction

Cable theft and piracy

If you know of someone in the Cablevision service area who is receiving unauthorized cable service, please call 1-800-291-8564 or click here to notify us.

Business customers

The business your business can rely on. Click here for more info.