The 720 area code covers Denver, Aurora, Lakewood and more in Colorado. Provision a local 720 number in minutes.
Area code 720 is the overlay for the Denver metro area, sharing territory with the original 303 code. Denver has been one of the fastest-growing major US cities as it attracts tech companies, outdoor enthusiasts, and migrants from more expensive coastal cities. Legal cannabis since 2012 has added yet another dimension to Colorado's economic boom. The overlay was introduced in 1998.
Across Colorado, the 720 area code serves roughly 1.8 million residents in 4 communities — including Denver, Aurora, Lakewood, among others. Numbers in the 720 zone keep Mountaintime, so a local line rings during your customers' business hours and shows a familiar CO caller ID on every outbound call.
720 was first introduced in 1998 as an overlay of the 303 area code, adding fresh numbering capacity to the same region without forcing anyone to change an existing number. Because an overlay shares geography with another code, ten-digit dialing is standard throughout the area. It remains an active overlay code today.
Want a 720 number of your own? With Ajoxi you can claim one in minutes — no hardware, no contracts — and route calls, SMS, voicemail, and team messaging anywhere on a single UCaaS platform, with Tier-1 routing and clean caller-ID delivery on every line.
The 720 area code reaches 4 communities across Colorado, from Denver to Centennial. A customer in any of them sees a familiar local number when you call, which is the single biggest driver of answer rates — and with Ajoxi you can claim a number in any of these cities, or several at once, and route every call to the same team.
Pair a local Denver presence with enterprise-grade UCaaS — calling, meetings, and messaging on one platform.
Get a 720 NumberA 720 number tells Denver customers you're local — instant trust and higher answer rates, no office required.
Every 720 line includes HD calling, video meetings, team chat, SMS/MMS, auto-attendant, call recording, and an AI assistant.
Already have a 720 number? Port it in for free. Your number stays yours — port out anytime, no lock-in.
The 720 area code covers Denver, Aurora, Lakewood, Centennial in Colorado.
Phone numbers in the 720 area code operate on America/Denver time.
Yes. The 720 area code was introduced in 1998 and remains an active overlay code today.
Yes. Ajoxi provisions virtual 720 numbers with instant activation, clean caller-ID delivery, Tier-1 routing, and no setup fees — so you can build a local presence in minutes.
Choose a 720 number in the Ajoxi dashboard and it activates immediately — no hardware, no contracts, and no setup fees. Prefer to keep a number you already use? Port any existing 720 number in for free, usually within a few business days and with no downtime during the switch.
हाँ। प्रत्येक 720 नंबर एचडी कॉलिंग के साथ-साथ एसएमएस और एमएमएस का समर्थन करता है, इसलिए आपकी टीम ग्राहकों को टेक्स्ट कर सकती है, अभियान चला सकती है और एक ही लाइन से बातचीत का जवाब दे सकती है - यह सब किसी भी डिवाइस पर ब्राउज़र में, बिना किसी अलग ऐप इंस्टॉल किए।
प्रावधान ए 720 तत्काल सक्रियण, स्वच्छ कॉलर-आईडी और टियर-1 रूटिंग के साथ नंबर - कोई सेटअप शुल्क नहीं, मिनटों में लाइव।