(720) 456-3746
Denver, CO
(720) 456-3746 is likely a robocall: 27 FTC complaints, 59% recorded messages, most often about dropped calls or silence (26%).
- 5 FTC complaints dated in the 30 days to Nov 13, 2026, none in the 90 days before.
- More FTC complaints than 99% of the 31,610 numbers with FTC complaints in area code 720.
- Only 1 number in the 720-456 block has more complaints, of 75 there with FTC complaints.
Complaint history
27 FTC complaints between Sep 25, 2022 and Nov 11, 2026.
The FTC complaints came in 10 of the 51 months from Sep 2022 to Nov 2026; the busiest was Mar 2025, with 6 of 27.
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.
What callers claimed
7 of its 27 FTC complaints (26%) 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:
- Not specified / other 13 · 48%
- Dropped call or no message 7 · 26%
- Reducing your debt (credit cards, mortgage, student loans) 5 · 19%
- Calls pretending to be government, businesses, or family and friends 2 · 7%
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 27 complaints describe debt collection.
Nearby numbers in 720-456
The closest reported numbers on either side of (720) 456-3746, in number order.
When the calls came
Time of day of 25 calls; most often the 11 a.m. hour (6):
Day of the week of 27 calls:
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 27 complainants has area code 720, the number's own. The calls reached people elsewhere, so this isn't a local caller to them.
FTC complainants were in Florida (6), Illinois (6), Virginia (3) and Washington (2), among others.
Where FTC complainants were located (U.S. states):
- Florida 6 · 22%
- Illinois 6 · 22%
- Virginia 3 · 11%
Show 3 more states Show fewer
- Washington 2 · 7%
- Alabama 1 · 4%
- Arizona 1 · 4%
Complainants' cities (most common):
Downers Grove, IL (6) · Boca Raton, FL (4) · Fort Worth, TX (1) · Gainesville, FL (1) · Kinston, NC (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) 456-3746
- Who called me from (720) 456-3746?
- 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) 456-3746 a scam?
- Canadial rates it high risk, from 27 complaints, latest Nov 11, 2026, 59% robocalls.
- Is (720) 456-3746 a debt collector or collection agency?
- Nothing says it is: none of its 27 complaints describe debt collection.
- Should I call (720) 456-3746 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) 456-3746 been reported?
- 27 complaints to the U.S. FTC's Do Not Call registry between Sep 25, 2022 and Nov 11, 2026.
- What do callers from (720) 456-3746 say?
- 7 of its 27 FTC complaints (26%) are about dropped calls or silence, against 16% of the 40,642 FTC complaints about all numbers in area code 720.
- When does (720) 456-3746 call?
- In FTC complaints, the most common time was the 11 a.m. hour (6 of 25 calls with a time).
Data updated: FTC complaints through Nov 13, 2026; numbering records as of Nov 3, 2026; community reports live. How this page is built.