Everything you need to know about area code 720 in Colorado
QUICK FACTS
Colorado
Mountain Time Zone
Overlay code
Estimated residents served
Colorado
Shares territory with existing code
ABOUT THIS AREA CODE
Area code 720 is an overlay for the Denver, Colorado metro area, sharing coverage with 303. It serves the rapidly growing Front Range region including Aurora and parts of Boulder.
Phone numbers with the 720 area code follow the format (720) XXX-XXXX, where the next three digits represent the local exchange. The 720 area code is part of the North American Numbering Plan (NANP) and is regulated by the Federal Communications Commission (FCC).
If you receive a call from a 720 number that you don't recognize, you can search it using the lookup tool above. While the 720 area code legitimately serves millions of residents and businesses in the Denver area, scammers sometimes spoof local area codes to make their calls appear more trustworthy. Always verify unfamiliar numbers before returning calls or sharing personal information.
The Denver region served by area code 720 is one of the most densely populated areas in Colorado. As an overlay code, 720 shares its geographic territory with other area codes in the region, meaning all local calls require 10-digit dialing.
For detailed information about any phone number in the 720 area code, including owner identification, carrier data, and spam reports, use our search tool above or visit one of our trusted lookup providers.
CITIES & COMMUNITIES
SPAM & SCAM ALERTS
These are frequently reported scam patterns from phone numbers using the 720 area code. Scammers often spoof area codes, so a call appearing to come from 720 may originate elsewhere.
Callers claim to be from the IRS, threatening arrest or legal action unless immediate payment is made. The real IRS always contacts taxpayers by mail first.
Callers claim your computer has a virus and offer to fix it remotely. They install malware or charge for unnecessary services.
Automated messages claim suspicious activity on your bank account and ask you to verify account details by pressing a number.
Stay Safe: Never share personal information with incoming callers. If suspicious, hang up and search the number above.
FREQUENTLY ASKED QUESTIONS
Area code 720 serves Denver, Colorado. Area code 720 is an overlay for the Denver, Colorado metro area, sharing coverage with 303. It serves the rapidly growing Front Range region including Aurora and parts of Boulder.
Area code 720 is in the Mountain timezone. Calls from 720 numbers originate from the Denver region.
Not necessarily. Area code 720 serves many people in Denver. However, scammers can spoof any area code. If you receive a suspicious call from a 720 number, search it above before calling back.
Area code 720 was created in 1998. It is an overlay code sharing territory with an existing area code.
WHO CALLED ME
If you received an unknown call from a 720 number, use our dedicated lookup page to identify the caller and check for scam reports.
Who Called Me From 720? →