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A business VoIP phone service you can count on

For 20+ years, we’ve offered business VoIP phone service with unmatched reliability, security, flexibility, and customer service.

Trustpilot

Trusted by over 100,000 businesses

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Award-winning support (from real humans)

With our call center based in the USA, our team is here whenever you need us—no chatbots, no complications. That’s why we’ve won multiple best customer service awards from Gartner Digital Markets and Business Intelligence Group!

Customer service award
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Simple, secure, adaptable

  • Easy to set up and use
  • Secure, patented technology
  • Scales with your business
  • Can be used in a HIPAA compliant way
  • Bring your own device
  • Connect with over 150 countries
  • Free onboarding services included
  • Always up, always on
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Pay your way

You don’t want to be tied to a long-term contract? No problem - pay per month. You’d rather commit to an extended period? We’ll make it happen. You’re always in control!

View our plans
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Customers love us!

And we take their feedback seriously. Listen to how one of our customer’s expectations for a phone provider were far surpassed. You’ll find many others on Trustpilot.

Read some of our success stories
Trustpilot

Want more details?

We're sorry--it looks like you are located in a country that OnSIP doesn't service. If you are located in the U.S. or Canada and you received this message, please contact us at (800) 801-3381.