(720) 456-3687
Denver, CO
(720) 456-3687 is likely a robocall: 20 FTC complaints and 1 FCC complaint, recorded messages in 65% of the FTC complaints, mostly about dropped calls or silence.
- No new complaints since Jan 16, 2026 (FTC data through Nov 13, 2026).
- More FTC complaints than 99% of the 31,610 numbers with FTC complaints in area code 720.
- Only 3 numbers in the 720-456 block have more complaints, of 75 there with FTC complaints.
Complaint history
20 FTC complaints between May 20, 2022 and Jan 16, 2026.
The FTC complaints came in 9 of the 45 months from May 2022 to Jan 2026.
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
1 complaint to the U.S. Federal Communications Commission on May 1, 2015.
The complainant heard a recorded message. They filed it as robocalls (1). Complainants were in North Carolina (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
10 of its 20 FTC complaints (50%) are about dropped calls or silence, against 16% of the 40,642 FTC complaints about all numbers in area code 720.
Complaint categories chosen by FTC complainants:
- Dropped call or no message 10 · 50%
- Not specified / other 7 · 35%
- Reducing your debt (credit cards, mortgage, student loans) 2 · 10%
- Calls pretending to be government, businesses, or family and friends 1 · 5%
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 21 complaints describe debt collection.
Nearby numbers in 720-456
The closest reported numbers on either side of (720) 456-3687, in number order.
When the calls came
Time of day of 19 calls; most often the 11 a.m. hour (6):
Day of the week of 20 calls; most often Friday (9):
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.
1 of 20 complainants has 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 South Carolina (5 of 20); others in Ohio (3), Florida (2) and Georgia (2) and more. Statewide, South Carolina ranks #27 of the 50 states and DC for Do Not Call complaints per resident: 39,888 in the last 12 months, 716.1 per 100,000 people. Spam calls in South Carolina.
Where FTC complainants were located (U.S. states):
- South Carolina 5 · 25%
- Ohio 3 · 15%
- Florida 2 · 10%
Show 3 more states Show fewer
- Georgia 2 · 10%
- New York 2 · 10%
- Wyoming 2 · 10%
Complainants' cities (most common):
Lexington, SC (5) · Akron, OH (1) · Cincinnati, OH (1) · Garfield Hts, OH (1) · Halfmoon, NY (1)
As typed on the FTC form, with spelling variants merged; complaints without a city aren't counted.
Searches on Canadial
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Recent community reports
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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) 456-3687
- Who called me from (720) 456-3687?
- No complaint names the caller; FTC complainants most often said the calls were about dropped calls or silence. 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) 456-3687 a scam?
- Canadial rates it medium risk, from 21 complaints, latest Jan 16, 2026, robocalls in 65% of the FTC complaints.
- Is (720) 456-3687 a debt collector or collection agency?
- Nothing says it is: none of its 21 complaints describe debt collection.
- Should I call (720) 456-3687 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) 456-3687 been reported?
- 20 complaints to the U.S. FTC's Do Not Call registry between May 20, 2022 and Jan 16, 2026 and 1 complaint to the U.S. FCC on May 1, 2015.
- What do callers from (720) 456-3687 say?
- 10 of its 20 FTC complaints (50%) are about dropped calls or silence, against 16% of the 40,642 FTC complaints about all numbers in area code 720.
- When does (720) 456-3687 call?
- In FTC complaints, the most common time was the 11 a.m. hour (6 of 19 calls with a time); the most common day was Friday (9 of 20).
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.