720-316
Last activity: May 4, 2023
Area code 720 numbers in Denver, CO
Browse recently reported phone numbers in area code 720, commonly associated with Denver, CO. This page shows recent activity, reported numbers, and popular prefixes linked to this area code.
Location
Denver, CO
Reported numbers
20
Reports in last 7 days
0
Reports in last 30 days
1
Last activity
May 8, 2026
About area code 720
Area code 720 is commonly associated with Denver, CO. The most common report type in this area code is unknown, with 3839 reports. Users submitted 1 reports related to this area code in the last 30 days.
What people report about area code 720
Recent reports for area code 720 are mostly about unknown callers, and many users also describe the calls as suspicious. A common pattern is a vague or unhelpful voicemail that still leaves the call feeling untrustworthy.
Suspicious or scam-like
Unknown callers
Vague or missing voicemail
Repeated calls
“Called pretending to be Boost Mobile, and asked for a 2FA code they triggered. Not a legitimate Boost call center number - do not provide them with any information”
“Usual b.s. - answer and no one on the line”
What stands out about area code 720
Reports are spread across several active prefixes within area code 720, which suggests the activity is not limited to one isolated number block. Recent reporting activity is still present, although the overall volume is more limited. The page also has usable geographic context through Denver, CO, which helps users decide whether a call looks locally relevant or completely unfamiliar.
Should you answer calls from area code 720?
Because many reports on this page involve unknown callers and suspicious behavior, the safest option is usually to let unexpected calls go to voicemail first and verify the number before responding.
- Do not trust caller ID alone.
- Search the full phone number before calling back.
- Be careful with callers who create urgency or ask for payment.
- Never share card details, banking data, passwords, or verification codes with an unknown caller.
- If the call is legitimate, the caller will usually leave a clear voicemail.
Approximate location
Area code 720 is commonly associated with Denver, CO. The map below shows an approximate location reference and may not represent the full coverage area.
Reported call types
Type
Reports
Share
Unknown
3,839
95.7%
Scam suspicion
92
2.3%
SSN scam
32
0.8%
Silent call
20
0.5%
Valid
9
0.2%
Debt collector
8
0.2%
IRS scam
5
0.1%
Survey
4
0.1%
Telemarketer
3
0.1%
Text message
1
0%
Popular prefixes in area code 720
720-687
Last activity: Jun 23, 2021
720-679
Last activity: Dec 14, 2024
720-456
Last activity: Mar 14, 2023
720-640
Last activity: Jul 29, 2024
720-780
Last activity: Sep 13, 2022
720-735
Last activity: Mar 25, 2022
720-797
Last activity: Feb 9, 2022
720-615
Last activity: Jan 14, 2022
720-405
Last activity: Mar 18, 2022
720-805
Last activity: May 20, 2022
720-776
Last activity: Nov 24, 2021
Recently reported numbers
How to check if a call is legitimate
This page gives area-code-level context, but the exact number still matters more. Use the reports, recent activity, and voicemail details together before deciding whether to respond.
- Search the exact phone number, not just the area code.
- Review recent reports and call type patterns.
- Check whether the caller left a clear voicemail with a name and reason for calling.
- Do not trust threats, payment demands, or urgent account warnings without independent verification.
- Contact banks, delivery firms, insurers, courts, or government agencies through their official websites or phone numbers.
FAQ about area code 720
Where is area code 720 located?
Area code 720 should be treated as a general reference point, not proof of the caller's exact location.
Why do so many calls from area code 720 seem suspicious?
Recent reports for area code 720 are mostly about unknown callers, and many users also describe the calls as suspicious. A common pattern is a vague or unhelpful voicemail that still leaves the call feeling untrustworthy.
What can prefix 720-720316 tell me?
Reports are spread across several active prefixes within area code 720, which suggests the activity is not limited to one isolated number block.