Establish Local Trust
People answer the phone when they recognize the area code.
By dialing from a 303 or 720 number, you instantly signal to Front Range prospects that you are a part of their community.
Build A Genuine Presence
You do not need a physical office near Union Station to grow your customer base in Colorado.
A local number gives your business instant credibility and makes it easier for potential buyers to reach out to a familiar, local business.
Keep Your Personal Cell Private
Running a business should not mean giving up your personal privacy.
With the Allo mobile app, you can seamlessly manage your business calls from your existing smartphone while keeping your personal number completely separate.
Supercharge Your Workflow With AI
Stop losing deals to administrative work and manual data entry.
With our AI phone system, every call is recorded, transcribed, and synced directly to your CRM automatically so your team can focus entirely on selling.
Create your Allo account
Go to the signup page and enter your details. We offer a 7-day free trial to let you test your new number and all the options that come with it.
Select your phone number
Pick your state, city and area code. We then generate the virtual phone number based on your preferences
Adjust your settings
Once you’ve been assigned a number, you can start configuring your account (voicemail, business hours, etc.)



Get all the power of an AI phone system bundled with your local number.
Get AI call summaries and more
Get your calls answered by our AI answering service when you’re busy, leverage our AI IVR to redirect your calls to the right person, receive a call transcript and AI-generated summaries when your calls finish, get help with your email drafts, and more.

Communicate without limits
Your phone number comes with unlimited calls and text messages to US numbers.

Call in HD
Our AI spam filter keeps known telemarketers away while the whisper mode lets you filter inbound calls.

Collaborate easily
Add teammates, assign or share numbers, and track everything in one place.



Which area codes cover Denver?
Denver is covered by area codes 303, 720, and 983. The original 303 area code is one of the most recognized, while 720 and 983 serve as overlays for the same metropolitan region.
How do I get a Denver phone number?
Getting a Denver number with Allo takes just a few minutes. Simply sign up for your account, choose your preferred 303, 720, or 983 number from our available inventory, and your team can start dialing immediately through our mobile app.
Do I need a physical address in Denver to purchase a Denver phone number?
No, you do not need a physical address in Colorado to get a Denver area code. Our cloud-based system lets you build a local presence in the region from anywhere in the world.
Will people know where I am actually calling from?
No, your caller ID will only display your new Denver phone number. Prospects will see a familiar local code, helping you increase your connection rates without revealing your actual geographic location.


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