Virtual Phone Numbers: What They Are, How They Work, and What They Cost

When I started my first business, I put my cell phone number on the website. Seemed reasonable — I was the only employee, and I wanted customers to be able to reach me. Within six months I was getting sales calls at 10pm, spam calls from every directory that scraped my number, and the growing realization that I’d made a mistake I couldn’t easily undo.

A virtual phone number would have solved this on day one. It would have cost me less than my Netflix subscription. And I wouldn’t still be getting robocalls on my personal phone years later.

If you’re starting a business, running a side hustle, or just want a professional phone presence without the hardware, this is the guide I wish I’d had.

What a Virtual Phone Number Actually Is

A virtual phone number is a real phone number — people can call it, text it, and it shows up on caller ID just like any other number. The “virtual” part means it isn’t physically connected to a phone line or a specific device.

Instead, it routes through the internet. When someone calls your virtual number, the call gets delivered to whatever device or app you’ve configured. That might be:

• A VoIP app on your laptop
• An app on your smartphone
• A desk phone connected to your internet
• Multiple devices simultaneously (they all ring at once)
• A different number entirely (call forwarding)

You can also make outgoing calls from your virtual number. The person you’re calling sees your virtual number on their caller ID, not your personal cell. Complete separation between personal and business communication.

Types of Virtual Phone Numbers

Not all virtual numbers are the same. Here’s what’s available:

Local numbers

These have area codes tied to specific geographic regions. A 312 number is Chicago. A 702 is Las Vegas. A 617 is Boston. Getting a local number in a market you serve makes your business appear local even if you’re across the country.

This matters more than you might think. Research on call answer rates consistently shows that people are 3-4x more likely to answer a call from a local area code than from an unknown toll-free or out-of-state number. If your sales team is making outbound calls, local numbers dramatically improve pick-up rates.

VestaCall offers local phone numbers in every major US area code. You can have numbers in multiple cities — one for each market you serve.

Toll-free numbers

800, 888, 877, 866, 855, 844 — these numbers are free for the caller and signal that you’re an established business. They’re better for inbound customer service and support lines where you want to remove any barrier to calling.

The tradeoff: toll-free numbers cost slightly more than local numbers, and they carry per-minute charges for incoming calls (typically $0.02-0.05/minute). For a high-volume support line, those minutes add up.

Vanity numbers

These are toll-free or local numbers that spell something — 1-800-FLOWERS, for example. They’re memorable and great for marketing. The downside: the good ones are taken, and custom vanity numbers often come with premium pricing.

International numbers

Want customers in the UK to have a local number to call? You can get virtual numbers in most countries — VestaCall supports 100+ countries. The customer calls a local number in their country, and the call routes to your team wherever they are. No international calling charges for the customer.

How Virtual Numbers Work (Technically)

When someone dials your virtual number:

1. The call hits the carrier network — it starts as a regular phone call through the public telephone network
2. The carrier routes to your VoIP provider — your number is registered to VestaCall (or whoever your provider is), so the carrier sends the call there
3. Your provider processes it — checks your routing rules, IVR settings, time-of-day routing, ring groups
4. The call reaches your device — delivered via internet to your app, softphone, or IP desk phone

Outbound calls work in reverse. You dial from the app, VestaCall sends the call through the carrier network, and the recipient sees your virtual number on caller ID.

The whole process happens in milliseconds. The caller has no idea they’re reaching a virtual number — it sounds and behaves exactly like a traditional phone call.

What You Can Do With Virtual Numbers

A virtual number by itself is just a number. The real value comes from the features your VoIP provider layers on top:

Call routing and IVR — set up a menu system (“Press 1 for sales…”) or use AI-powered IVR that lets callers speak naturally.

Business hours — calls during business hours ring your team. After hours, they go to voicemail or a different message. No more fielding calls at dinner.

Ring groups — multiple people can be assigned to the same number. Call rings for everyone in the sales team, first to pick up gets it.

Call recording — every call can be recorded automatically for training, quality, or compliance purposes.

Voicemail-to-email — voicemails get transcribed and sent to your inbox. Read them instead of listening.

Analytics — see how many calls you’re getting, when they come in, how long they last, which are missed.

CRM integration — calls automatically log in Salesforce, HubSpot, or whatever CRM you’re using. No manual data entry.

None of this exists with a regular cell phone number. And setting it up with a traditional phone system requires thousands in hardware.

Pricing: What You’ll Actually Pay

For most businesses, a VoIP platform like VestaCall makes the most sense because you get the virtual number AND the entire phone system in one package. You’re not paying for a number separately and then paying again for call routing, recording, and analytics.

VestaCall plans start at $19/user/month with a local or toll-free number included. Additional numbers are $3-5/month each. See our pricing page for specifics.

When You Need a Virtual Number

You’re starting a business — get a business number before you put your personal cell on anything. You’ll thank yourself later.

You have remote employees — give everyone a business number without buying hardware. They use the app.

You serve multiple markets — get local numbers in each city so you appear local everywhere. A 312 area code for Chicago, a 305 for Miami, a 415 for San Francisco.

You’re scaling your team — adding a new employee takes 2 minutes. No hardware to provision, no phone lines to install.

You want to track marketing — assign different virtual numbers to different ad campaigns. Now you know which campaign drives phone calls.

Getting Started

Getting a virtual phone number takes about 5 minutes:

1. Pick a VoIP provider (we’re biased, but VestaCall is a solid choice)
2. Choose your number — local, toll-free, or both
3. Set up basic routing — where should calls go?
4. Download the app on your phone and laptop
5. Start making and receiving calls

If you have an existing business number you want to keep, you can port it to your VoIP provider. The process takes 1-5 business days, and your service continues uninterrupted during the transfer.

Your phone number is often the first way a customer interacts with your business. Make it a good experience — not a personal voicemail with your kid’s voice on the greeting.

Sarah Chen

Head of Product, VestaCall