(303) 500-6643
Hudson, CO
(303) 500-6643 is reported as unwanted: 2 FTC complaints and 3 FCC complaints.
- No new complaints since Aug 18, 2022 (FTC data through Nov 13, 2026).
- More FTC complaints than 89% of the 26,440 numbers with FTC complaints in area code 303.
Complaint history
2 FTC complaints between Aug 15, 2022 and Aug 18, 2022.
Both FTC complaints are about calls in Aug 2022.
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 Sep 22, 2021 and Sep 27, 2021.
All 3 heard a live person. They filed them as unwanted calls (3). The calls were about medicare medicaid (3). Complainants were in Colorado (3).
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
Complaint categories chosen by FTC complainants:
- Not specified / other 2 · 100%
Who called
The number's block is assigned to Onvoy, LLC in Hudson, CO.
Is it a debt collector?
Nothing says it is: none of its 5 complaints describe debt collection.
Nearby numbers in 303-500
The closest reported numbers on either side of (303) 500-6643, in number order.
When the calls came
Time of day of 2 calls:
Day of the week of 2 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
- Hudson, CO, USA
- Block assigned to
- Onvoy, 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.
Both FTC complainants were in Colorado. 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 2 · 100%
Complainants' cities:
Littleton, CO (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 (303) 500-6643 call you?
Loading…
Answers from visitors, one per person per month (asked at the top of the page).
Report (303) 500-6643
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 (303) 500-6643
- Who called me from (303) 500-6643?
- No complaint names the caller. The number is in a block assigned to Onvoy, LLC in Hudson, CO (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (303) 500-6643 a scam?
- Canadial rates it low risk, from 5 complaints, latest Aug 18, 2022.
- Is (303) 500-6643 a debt collector or collection agency?
- Nothing says it is: none of its 5 complaints describe debt collection.
- Should I call (303) 500-6643 back?
- Be careful. If you don't recognize it, let it go to voicemail: a legitimate caller will leave a message, and you can reach any real organization on a number you look up yourself.
- How many times has (303) 500-6643 been reported?
- 2 complaints to the U.S. FTC's Do Not Call registry between Aug 15, 2022 and Aug 18, 2022 and 3 complaints to the U.S. FCC between Sep 22, 2021 and Sep 27, 2021.
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.