(720) 803-5600
Denver, CO
(720) 803-5600 is likely a robocall: 10 FTC complaints, 80% recorded messages, mostly about debt relief.
- No new complaints since Mar 21, 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 720-803 block has more complaints; 8 numbers there have FTC complaints.
Complaint history
10 FTC complaints between Aug 16, 2024 and Mar 21, 2025.
The FTC complaints came in 3 of the 8 months from Aug 2024 to Mar 2025.
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 10 FTC complaints (70%) are about debt relief, against 7% of the 40,642 FTC complaints about all numbers in area code 720.
Complaint categories chosen by FTC complainants:
- Reducing your debt (credit cards, mortgage, student loans) 7 · 70%
- Not specified / other 3 · 30%
Who called
The number's block is assigned to Onvoy Spectrum, LLC in Denver, CO.
Is it a debt collector?
Nothing says it is: none of its 10 complaints describe debt collection; 7 (70% 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 720-803
The closest reported numbers on either side of (720) 803-5600, in number order.
All reported numbers in 720-803 →When the calls came
Time of day of 9 calls:
Day of the week of 10 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
- Onvoy Spectrum, 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 10 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 Colorado (4 of 10); others in California (3), Washington (2) and Tennessee (1). Statewide, Colorado ranks #7 of the 50 states and DC for Do Not Call complaints per resident: 59,905 in the last 12 months, 996.3 per 100,000 people. Spam calls in Colorado.
Where FTC complainants were located (U.S. states):
- Colorado 4 · 40%
- California 3 · 30%
- Washington 2 · 20%
Show 1 more states Show fewer
- Tennessee 1 · 10%
Complainants' cities:
Oceanside, CA (3) · Cedaredge, CO (2) · Cheney, WA (2) · Colorado Springs, CO (1)
As typed on the FTC form, with spelling variants merged; complaints without a city aren't counted.
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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) 803-5600
- Who called me from (720) 803-5600?
- No complaint names the caller; FTC complainants most often said the calls were about debt relief. The number is in a block assigned to Onvoy Spectrum, LLC in Denver, CO (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (720) 803-5600 a scam?
- Canadial rates it medium risk, from 10 complaints, latest Mar 21, 2025, 80% robocalls.
- Is (720) 803-5600 a debt collector or collection agency?
- Nothing says it is: none of its 10 complaints describe debt collection; 7 (70% 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) 803-5600 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) 803-5600 been reported?
- 10 complaints to the U.S. FTC's Do Not Call registry between Aug 16, 2024 and Mar 21, 2025.
- What do callers from (720) 803-5600 say?
- 7 of its 10 FTC complaints (70%) are about debt relief, against 7% of the 40,642 FTC complaints about all numbers in area code 720.
Data updated: FTC complaints through Nov 13, 2026; numbering records as of Nov 3, 2026; community reports live. How this page is built.