(303) 399-6409
Denver, CO
(303) 399-6409 has 2 FTC complaints, mostly about impersonating a government agency, business or relative.
- No new complaints since Sep 15, 2025 (FTC data through Nov 13, 2026).
- More FTC complaints than 89% of the 26,440 numbers with FTC complaints in area code 303.
- Only 2 numbers in the 303-399 block have more complaints, of 41 there with FTC complaints.
Complaint history
2 FTC complaints on Sep 15, 2025.
Both FTC complaints are about calls in Sep 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
2 of its 2 FTC complaints (100%) are about impersonating a government agency, business or relative, against 9% of the 31,961 FTC complaints about all numbers in area code 303.
Complaint categories chosen by FTC complainants:
- Calls pretending to be government, businesses, or family and friends 2 · 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 303-399
41 numbers in 303-399 have 50 FTC complaints between them (48% robocalls), 2 of them about (303) 399-6409. The commonest categories in the block: Dropped call or no message (14%), Calls pretending to be government, businesses, or family and friends (12%), Medical & prescriptions (10%).
The closest reported numbers on either side of (303) 399-6409, in number order.
When the calls came
Day of the week of 2 calls; most often Monday (2):
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
- 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.
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:
Fort Lupton, CO (2)
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 (303) 399-6409
- Who called me from (303) 399-6409?
- No complaint names the caller; FTC complainants most often said the calls were about impersonating a government agency, business or relative. 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) 399-6409 a scam?
- Canadial rates it low risk, from 2 complaints, latest Sep 15, 2025.
- Is (303) 399-6409 a debt collector or collection agency?
- Nothing says it is: none of its 2 complaints describe debt collection.
- Should I call (303) 399-6409 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) 399-6409 been reported?
- 2 complaints to the U.S. FTC's Do Not Call registry on Sep 15, 2025.
- What do callers from (303) 399-6409 say?
- 2 of its 2 FTC complaints (100%) are about impersonating a government agency, business or relative, against 9% of the 31,961 FTC complaints about all numbers in area code 303.
- When does (303) 399-6409 call?
- In FTC complaints, the most common day was Monday (2 of 2).
Data updated: FTC complaints through Nov 13, 2026; numbering records as of Nov 3, 2026; community reports live. How this page is built.