(720) Area Code Business Phone Numbers
The 720 area code was added as an overlay for the Denver metro in 1998, and it now shares the map with 303 across the Front Range. If your customers are in Aurora, Boulder, or downtown Denver, a 720 number tells them you are right there with them.
Get a 720 NumberAbout the 720 Area Code
The 720 code showed up in 1998 as the Denver area outgrew 303, and the two codes have been running side by side ever since. That means most locals do not care which one you have, they just want to see a Front Range number instead of a random out-of-state one on the caller ID.
Denver is a strong small business town, with roughly 378,000 small businesses in the metro area making up about 45% of local jobs[1]. Colorado's real GDP is projected to grow 2.9% in 2026, ahead of the national pace[2], so the phone is still ringing across everything from Boulder tech shops to Aurora contractors.
In a metro of roughly 3.09 million people[3], a local 720 number is a quiet trust signal. Customers pick up faster when the number looks like a neighbor's, and Tonet lets you keep that local presence even if your team works from home offices in Longmont or on job sites in Castle Rock.
Cities Served by the 720 Area Code
The 720 code covers the greater Denver metro, from the foothills near Boulder out to the plains around Brighton. Any of these cities can anchor your business identity with a matching local number.
Features Denver Businesses Actually Use
A phone number is the easy part. What makes it useful is the stuff behind it that keeps calls moving when you are running between meetings on Colfax or driving up to Boulder.
Auto Attendant
Route callers to sales, support, or your Aurora office without hiring a receptionist. Set custom hours for Mountain time so after-hours calls go straight to voicemail.
Call Recording
Keep a record of every quote and service call. Handy for training new hires and settling the occasional "that is not what we agreed on" conversation.
AI Transcription
Voicemails land in your inbox as readable text. Skim them between site visits instead of stopping to hit play.
Business SMS
Text customers from your 720 number for appointment reminders, quotes, or quick confirmations. Most people would rather text than call anyway.
Mobile App
Answer the office line from your cell whether you are at RiNo or up in Estes Park. Your personal number stays personal.
Daily Billing
Plans start at $10 per user per month, billed daily. Numbers are $2.50 each and there are no contracts, so you only pay for the days you actually use it.
Frequently Asked Questions
Can I get a 720 number if my business is not in Denver yet?
Yes. You do not need a Denver address to claim a 720 number. Plenty of businesses use one to test the market before opening a physical location in Colorado.
Is 720 the same as 303?
They are overlays, so they cover the same geography. Older Denver businesses often have 303, and 720 became common after 1998. Neither is more "local" than the other.
Can I port my existing 720 number to Tonet?
Yes. If you already have a 720 number with another carrier, you can bring it over. The porting process usually takes a few business days and there is no service interruption.
How many 720 numbers can I get on one account?
As many as you need. Add a separate 720 number for each department, location, or agent for $2.50 per month each. Remove them just as easily if things change.
Will my 720 number work outside of Colorado?
Absolutely. Calls ring on the desktop and mobile app anywhere you have internet, so you can travel or hire remote staff without losing the Denver presence.
Get a 720 Number for Your Denver Business
Pick a number, set up your greeting, and start taking calls today. No contract, no setup fees.
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