What an Internet Phone Number Is
An internet phone number routes calls over the internet instead of copper landlines or cellular towers. It is tied to a VoIP service provider, which converts voice into data packets and sends them to the called party. You can use it on a desk phone adapter, a softphone app, or a browser-based dialer. Because the number lives in the cloud, it can ring on multiple devices at once and move with you if you change offices or internet providers.
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These numbers can be local, toll-free, or international, and they often come with features like call forwarding, voicemail-to-text, and auto-attendants that are expensive or hard to get from legacy carriers.
Ways to Get an Internet Phone Number
There are three common paths, and the right one depends on whether you need a single line, a team system, or a temporary number.
1. Cloud Phone Service Providers
Platforms like RingCentral, Zoom Phone, Nextiva, and Google Voice let you pick a number during signup. You choose a city or area code, and the provider provisions the line on their servers. This is the most common way businesses get an internet phone number because the dashboard handles extensions, call routing, and analytics in one place. Most charge per user per month, and you can usually port an existing number to the service.
2. VoIP-Only Apps
Apps such as Skype, Grasshopper, OpenPhone, and Burner give you a number without dedicated hardware. You install the app on a phone or computer, buy a plan or pay-as-you-go credit, and the app acts as your phone. These are useful for freelancers, online sellers, or people who want a separate number for privacy. Some let you buy multiple numbers and switch between them in the same app.
3. Residential VoIP Plans
Some internet service providers and cable companies offer VoIP as a home phone replacement. Ooma, Vonage Home, and AT&T Landline via IP give you a standard-looking phone number that works with a traditional desk phone. The setup usually involves plugging an adapter into your router and your phone. These plans often cost less than a mobile line, but they depend on your broadband connection and may not work during a power outage unless you have a battery backup.
What to Check Before You Choose
Not every internet phone number is the same. Before you commit, look at these factors.
- Number type and area code: Decide if you need a local number, a toll-free 1-800 line, or an international number. Some providers let you search available numbers by area code, while others assign one automatically.
- Portability: If you already have a number you want to keep, confirm the provider supports number porting. The process usually takes a few days and may require a letter of authorization.
- Emergency calling: VoIP services rely on your internet connection and location data. Check whether the provider supports E911 and what happens if your internet goes down.
- Call quality and reliability: A stable broadband connection with enough upload speed is essential. Look for providers that offer quality-of-service controls, jitter buffers, and redundant data centers.
- Features and limits: Compare included minutes, international dialing rates, conferencing limits, and integrations with tools like Slack, Salesforce, or Google Workspace.
- Pricing model: Some charge per user per month with unlimited calling; others bill per minute or per channel. Watch for setup fees, number fees, and early termination charges.
Setup Steps
Once you pick a provider, the setup is usually straightforward. Create an account, choose or port your number, configure call routing to your devices, and test outgoing and incoming calls. If you use a desk phone, connect an ATA adapter or a VoIP-enabled handset to your router. For app-based lines, download the softphone, log in, and set your preferred ringing devices.
Costs at a Glance
| Option | Typical Monthly Cost | Best For |
|---|---|---|
| Google Voice | Free (US) or $10–$30 per user | Light personal or very small team use |
| VoIP app (Grasshopper, OpenPhone) | $12–$50 per user | Freelancers, solopreneurs, remote teams |
| Business cloud phone system | $20–$60 per user | Growing businesses with multiple extensions |
| Residential VoIP adapter | $10–$25 per month plus adapter | Home phone replacement |
Potential Drawbacks
Internet phone numbers need a reliable broadband connection. Power outages, network congestion, or an ISP outage can interrupt calls unless you have backup power or a failover plan. Some rural areas with slow or asymmetrical connections may notice latency or dropped calls. E911 accuracy can also be an issue if your registered address does not match your physical location, so keep your address and location settings up to date with your provider.
Security is another consideration. Because calls travel over the internet, they are subject to the same risks as any IP traffic. Use strong passwords, enable two-factor authentication on your provider account, and ask your provider about encryption and anti-spam tools.
Who Should Get an Internet Phone Number
These numbers work well for remote workers, small businesses, startups, e-commerce sellers, and anyone who wants a second line without a second SIM card. They are also useful for people moving between cities or countries who want to keep a local presence without changing their number. If your broadband is stable and you value flexibility over legacy copper-line reliability, an internet phone number is a practical choice.