(303) 643-4765
Denver, CO
(303) 643-4765 has 1 FTC complaint and 1 FCC complaint.
Most common complaint: home improvement and cleaning (100% of FTC complaints).
- No new complaints since Apr 27, 2026 (FTC data through Nov 13, 2026).
- No number in the 303-643 block has more complaints; 27 numbers there have FTC complaints.
Complaint history
1 FTC complaint on Apr 27, 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 Apr 27, 2026.
The complainant heard a live person. They filed it as unwanted calls (1). The calls were about home improvement (1). Complainants were in Colorado (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
Complaint categories chosen by FTC complainants:
- Home improvement & cleaning 1 · 100%
Who called
The number's block is assigned to Qwest Corporation in Denver, CO.
Is it a debt collector?
Nothing says it is: none of its 2 complaints describe debt collection.
Nearby numbers in 303-643
27 numbers in 303-643 have 27 FTC complaints between them (67% robocalls), 1 of them about (303) 643-4765. The commonest categories in the block: Calls pretending to be government, businesses, or family and friends (15%), Medical & prescriptions (15%), Home improvement & cleaning (11%).
The closest reported numbers on either side of (303) 643-4765, in number order.
Location
- Location of the number block
- Denver, CO, USA
- Block assigned to
- Qwest Corporation
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.
The one FTC complainant was 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 1 · 100%
Complainants' cities:
Longmont, CO (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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Report (303) 643-4765
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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) 643-4765
- Who called me from (303) 643-4765?
- No complaint names the caller. The number is in a block assigned to Qwest Corporation in Denver, CO (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (303) 643-4765 a scam?
- Canadial rates it low risk, from 2 complaints, latest Apr 27, 2026.
- Is (303) 643-4765 a debt collector or collection agency?
- Nothing says it is: none of its 2 complaints describe debt collection.
- Should I call (303) 643-4765 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) 643-4765 been reported?
- 1 complaint to the U.S. FTC's Do Not Call registry on Apr 27, 2026 and 1 complaint to the U.S. FCC on Apr 27, 2026.
- What do callers from (303) 643-4765 say?
- The most common complaint category is "Home improvement & cleaning" (100% of FTC complaints).
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.