(720) 456-3689
Denver, CO
(720) 456-3689 is likely a robocall: 5 FTC complaints and 3 FCC complaints, recorded messages in 100% of the FTC complaints, most often about impersonating a government agency, business or relative (20%).
- No new complaints since Sep 17, 2025 (FTC data through Nov 13, 2026).
- More FTC complaints than 98% of the 31,610 numbers with FTC complaints in area code 720.
Complaint history
5 FTC complaints between Feb 19, 2024 and Sep 17, 2025.
The FTC complaints came in 2 of the 20 months from Feb 2024 to Sep 2025; the busiest was Sep 2025, with 4 of 5.
FTC complaints are filed by consumers with the U.S. Federal Trade Commission's Do Not Call registry; they aren't verified by the FTC or by us.
Complaints to the FCC
3 complaints to the U.S. Federal Communications Commission between Aug 26, 2015 and Sep 10, 2020.
Of the 3 complainants, 2 heard a live person and 1 got a call that hung up or stayed silent. They filed them as unwanted calls (2) and telemarketing (1). Complainants were in New York (2) and Michigan (1).
Source: FCC Consumer Help Center, Consumer Complaints Data (public domain), complaints about unwanted calls, telemarketing and robocalls. The FCC doesn't verify the facts alleged in complaints, and neither do we.
What callers claimed
1 of its 5 FTC complaints (20%) is about impersonating a government agency, business or relative, against 9% of the 40,642 FTC complaints about all numbers in area code 720.
Complaint categories chosen by FTC complainants:
- Not specified / other 3 · 60%
- Calls pretending to be government, businesses, or family and friends 1 · 20%
- Reducing your debt (credit cards, mortgage, student loans) 1 · 20%
Who called
The number's block is assigned to Level 3 Telecom of Colorado, LLC in Denver, CO.
Is it a debt collector?
Nothing says it is: none of its 8 complaints describe debt collection; 1 (20% of FTC complaints) are about debt relief, which means offers to reduce credit card, loan or other debt. That's a sales pitch, not a collector asking you to pay a debt you owe.
Nearby numbers in 720-456
The closest reported numbers on either side of (720) 456-3689, in number order.
When the calls came
Time of day of 5 calls; most often the 12 p.m. hour (2):
Day of the week of 5 calls; most often Monday (4):
The date and time of the call as complainants entered them on the FTC form; the time zone isn't recorded. Times entered as exactly midnight or noon are left out (they're usually the form's default).
Location
- Location of the number block
- Denver, CO, USA
- Block assigned to
- Level 3 Telecom of Colorado, LLC
From the North American Numbering Plan Administrator (Nov 3, 2026). This is who the number block was assigned to; numbers can be moved between carriers, and caller IDs can be faked.
None of 5 complainants have area code 720, the number's own. The calls reached people elsewhere, so this isn't a local caller to them.
Most FTC complainants were in Michigan (2 of 5); others in Arizona (1), Minnesota (1) and Missouri (1). Statewide, Michigan ranks #8 of the 50 states and DC for Do Not Call complaints per resident: 97,922 in the last 12 months, 966.9 per 100,000 people. Spam calls in Michigan.
Where FTC complainants were located (U.S. states):
- Michigan 2 · 40%
- Arizona 1 · 20%
- Minnesota 1 · 20%
Show 1 more states Show fewer
- Missouri 1 · 20%
Complainants' cities:
Dimondale, MI (1) · Green Valley, AZ (1)
As typed on the FTC form, with spelling variants merged; complaints without a city aren't counted.
Searches on Canadial
Loading…
Real visits to this page, counted once per visitor per day.
Did (720) 456-3689 call you?
Loading…
Answers from visitors, one per person per month (asked at the top of the page).
Report (720) 456-3689
Tell others what the call was about. Reports appear on this page; no account needed.
Recent community reports
No community reports yet. Be the first to describe this call.
What to do
- Don't share personal or banking details, or pay anyone, on a call you didn't expect. Hang up and call the organization back on a number you find yourself.
- Block it from your recent calls (iPhone: ⓘ, then “Block this Caller”; Android: long-press, then “Block”).
- Report fraud to the Canadian Anti-Fraud Centre (1-888-495-8501).
- Report telemarketing if you're registered and still got the call: to the National Do Not Call List.
- A collector calling? How to check a collection agency in your province.
- Report fraud to the FTC.
- Report telemarketing if you're registered and still got the call: to the National Do Not Call Registry.
- A collector calling? See the FTC's guide to your rights.
- Report fraud: in the U.S. to the FTC; in Canada to the Canadian Anti-Fraud Centre (1-888-495-8501).
- Report telemarketing if you're registered and still got the call: in the U.S. to the National Do Not Call Registry; in Canada to the National Do Not Call List.
- A collector calling? In the U.S., see the FTC's guide to your rights; in Canada, how to check a collection agency in your province.
Questions about (720) 456-3689
- Who called me from (720) 456-3689?
- No complaint names the caller; FTC complainants most often said the calls were about impersonating a government agency, business or relative. The number is in a block assigned to Level 3 Telecom of Colorado, LLC in Denver, CO (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (720) 456-3689 a scam?
- Canadial rates it medium risk, from 8 complaints, latest Sep 17, 2025, robocalls in 100% of the FTC complaints.
- Is (720) 456-3689 a debt collector or collection agency?
- Nothing says it is: none of its 8 complaints describe debt collection; 1 (20% of FTC complaints) are about debt relief, which means offers to reduce credit card, loan or other debt. That's a sales pitch, not a collector asking you to pay a debt you owe.
- Should I call (720) 456-3689 back?
- No. Calling back can confirm that your line is answered. If the caller claimed to be a company or agency you deal with, contact it on a number you find yourself.
- How many times has (720) 456-3689 been reported?
- 5 complaints to the U.S. FTC's Do Not Call registry between Feb 19, 2024 and Sep 17, 2025 and 3 complaints to the U.S. FCC between Aug 26, 2015 and Sep 10, 2020.
- What do callers from (720) 456-3689 say?
- 1 of its 5 FTC complaints (20%) is about impersonating a government agency, business or relative, against 9% of the 40,642 FTC complaints about all numbers in area code 720.
- When does (720) 456-3689 call?
- In FTC complaints, the most common time was the 12 p.m. hour (2 of 5 calls with a time); the most common day was Monday (4 of 5).
Data updated: FTC complaints through Nov 13, 2026; FCC complaints refreshed daily; numbering records as of Nov 3, 2026; community reports live. How this page is built.