(720) 456-3703
Denver, CO
(720) 456-3703 is likely a robocall: 36 FTC complaints and 1 FCC complaint, recorded messages in 56% of the FTC complaints, most often about dropped calls or silence (28%).
- No new complaints since Dec 19, 2025 (FTC data through Nov 13, 2026).
- More FTC complaints than 99% of the 31,610 numbers with FTC complaints in area code 720.
- No number in the 720-456 block has more complaints; 75 numbers there have FTC complaints.
Complaint history
36 FTC complaints between Sep 2, 2022 and Dec 19, 2025.
The FTC complaints came in 9 of the 40 months from Sep 2022 to Dec 2025; the busiest was Sep 2022, with 15 of 36.
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 Jun 24, 2024; all gave it as the number to call back rather than the caller ID.
The complainant heard a recorded message. They filed it as unwanted calls (1). Complainants were in California (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 36 FTC complaints (28%) 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 21 · 58%
- Dropped call or no message 10 · 28%
- Reducing your debt (credit cards, mortgage, student loans) 5 · 14%
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 37 complaints describe debt collection.
Nearby numbers in 720-456
The closest reported numbers on either side of (720) 456-3703, in number order.
When the calls came
Time of day of 32 calls; most often the 10 a.m. hour (8):
Day of the week of 36 calls; most often Monday (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 36 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 Florida (9 of 36); others in Alabama (3), Illinois (3) and California (2) and more. Statewide, Florida ranks #2 of the 50 states and DC for Do Not Call complaints per resident: 256,906 in the last 12 months, 1095 per 100,000 people. Spam calls in Florida.
Where FTC complainants were located (U.S. states):
- Florida 9 · 25%
- Alabama 3 · 8%
- Illinois 3 · 8%
Show 3 more states Show fewer
- California 2 · 6%
- Indiana 2 · 6%
- Michigan 2 · 6%
Complainants' cities (most common):
Haddon Twp, NJ (2) · Bailey, CO (1) · Boston, MA (1) · Chesnee, SC (1) · Ecorse, MI (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) 456-3703 call you?
Loading…
Answers from visitors, one per person per month (asked at the top of the page).
Report (720) 456-3703
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) 456-3703
- Who called me from (720) 456-3703?
- 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) 456-3703 a scam?
- Canadial rates it medium risk, from 37 complaints, latest Dec 19, 2025, robocalls in 56% of the FTC complaints.
- Is (720) 456-3703 a debt collector or collection agency?
- Nothing says it is: none of its 37 complaints describe debt collection.
- Should I call (720) 456-3703 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) 456-3703 been reported?
- 36 complaints to the U.S. FTC's Do Not Call registry between Sep 2, 2022 and Dec 19, 2025 and 1 complaint to the U.S. FCC on Jun 24, 2024.
- What do callers from (720) 456-3703 say?
- 10 of its 36 FTC complaints (28%) are about dropped calls or silence, against 16% of the 40,642 FTC complaints about all numbers in area code 720.
- When does (720) 456-3703 call?
- In FTC complaints, the most common time was the 10 a.m. hour (8 of 32 calls with a time); the most common day was Monday (9 of 36).
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.