Phone List

To order either Optimum residential or business services, use the numbers listed below. Our regional telephone sales lines are open:

Monday - Friday 7am - 11pm
Saturday & Sunday 7am - 10pm

Monday - Friday 8am - 7pm
Saturday, 9am - 5pm

Browse our customer service section and quickly find the answers to common questions about Optimum's products and services before you call for assistance. If you do need to call, our customer service lines are open 24 hours a day, seven days a week.


Residential Customer Service 203-870-2584
Residential Sales 203-870-2492
New Jersey
Residential Customer Service 973-230-6048
Residential Sales 973-230-2037
Long Island
Residential Customer Service 631-393-0637
Residential Sales 631-393-0707
NY: Bronx / Brooklyn / Westchester
Residential Customer Service 718-860-3514
Residential Sales 718-975-1140
Optimum Business Services
Customer Service
24 hours a day, 7 days a week
Sales/Installation & Pending Surveys
Monday - Friday: 8am - 7pm
Saturday: 9am - 5pm