Get a Denver metro number in the 720 overlay — the same Front Range market as 303, serving all of the Denver metro's 3.5M residents and businesses. Activate instantly, no hardware required.
Area code 720 is the overlay code for 303 across the Denver metropolitan statistical area — covering Denver, Boulder, Aurora, Lakewood, Arvada, Westminster, Centennial, and the broader Front Range corridor. Introduced in 1998 to meet demand in a rapidly growing metro, 720 carries equal local credibility with 303 for Denver businesses. The Front Range is one of America's fastest-growing economic regions, with a young highly educated workforce and a concentration of aerospace, defence, energy, and technology companies that rivals Silicon Valley in several sectors.
From Denver to Thornton 720 covers the Mountain West region of Colorado.
720 and 303 are interchangeable locally — Denver residents and businesses treat them as equally credible local numbers. A 720 number gives you the same market access as 303 without any perception of being an outsider.
Westminster, Broomfield, Centennial, and Highlands Ranch — some of Colorado's fastest-growing communities — fall into the 720 overlay zone. Professional services and retail businesses targeting these suburbs specifically benefit from 720.
Aurora's Fitzsimons Life Science District (home to the University of Colorado Anschutz Medical Campus and Children's Hospital Colorado) and Buckley Space Force Base both sit in the 720 zone. Healthcare and defence vendors benefit from a local 720 presence.
Because 720 is the overlay code, there are more available numbers to choose from. Businesses entering the Denver market quickly can activate a memorable 720 number in seconds while local 303 blocks are more depleted.
Every 720 number delivers fourteen professional features for the Denver metro — the same tools as a 303 number, with Mountain Time routing for Colorado's aerospace and energy industry, call analytics for the Front Range's tech corridor, and IVR for Anschutz Medical Campus's clinical operations.
Redirect every call to any device — mobile, desk phone, or laptop. Set rules by time, caller, or team.
Four steps. Five minutes. No technical setup, no hardware required.
Browse 720 numbers by Denver, Aurora, or Westminster prefix — or port your existing Front Range overlay number for free.
Select a plan for your Denver team — 720 delivers identical local credibility to 303 across the entire metro market.
Configure your 720 line with Mountain Time routing for Denver's corporate schedule and Anschutz Medical Campus's hospital calendar.
Take 720 calls on any device — Denver residents, Aurora's healthcare community, and the Front Range's tech companies treat 720 and 303 as equally local.
Pick a region, then select any state to see every active area code with city coverage, time zones, and a number-picker shortcut.
Everything you need to know before getting a virtual 720 phone number. Our team is one click away for anything else.
Yes. TKOS 720 numbers are 100% virtual — establish a Colorado presence from anywhere in the world. Calls, texts, and voicemails route to any device you choose.
Yes. Anyone in the US — or internationally — can dial your 720 number just like a regular phone. The local Colorado area code builds trust with local callers while the number works globally.
Yes. TKOS integrates with HubSpot, Zoho, and other leading CRMs. Every 720 call and text is automatically logged, so your team has a complete conversation history without manual data entry.
Yes. TKOS supports custom digit sequences on 720 area code numbers. Search for your preferred pattern when selecting a number — vanity sequences are available at no extra cost.
Yes. TKOS business-hours routing lets you define open and closed schedules in Mountain Time (MT) (UTC-7). After-hours calls automatically roll to voicemail, another number, or a custom message — no manual switching.
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