(303) 255-5352
Denver, CO
(303) 255-5352 is likely a robocall: 12 FTC complaints, 67% recorded messages, most often about dropped calls or silence (33%).
- No new complaints since Sep 24, 2025 (FTC data through Nov 13, 2026).
- More FTC complaints than 99% of the 26,440 numbers with FTC complaints in area code 303.
- Only 8 numbers in the 303-255 block have more complaints, of 75 there with FTC complaints.
Complaint history
12 FTC complaints between Aug 20, 2022 and Sep 24, 2025.
The FTC complaints came in 4 of the 38 months from Aug 2022 to Sep 2025; the busiest was Sep 2025, with 5 of 12.
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
4 of its 12 FTC complaints (33%) are about dropped calls or silence, against 15% of the 31,961 FTC complaints about all numbers in area code 303.
Complaint categories chosen by FTC complainants:
- Not specified / other 7 · 58%
- Dropped call or no message 4 · 33%
- Reducing your debt (credit cards, mortgage, student loans) 1 · 8%
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 12 complaints describe debt collection.
Nearby numbers in 303-255
The closest reported numbers on either side of (303) 255-5352, in number order.
When the calls came
Time of day of 12 calls; most often the 9 a.m. hour (3):
Day of the week of 12 calls; most often Monday (5):
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.
1 of 12 complainants has area code 303, the number's own. The calls reached people elsewhere, so this isn't a local caller to them.
FTC complainants were in Illinois (2), Louisiana (2), Michigan (2) and California (1), among others.
Where FTC complainants were located (U.S. states):
- Illinois 2 · 17%
- Louisiana 2 · 17%
- Michigan 2 · 17%
Show 3 more states Show fewer
- California 1 · 8%
- Georgia 1 · 8%
- Indiana 1 · 8%
Complainants' cities:
Downers Grove, IL (1) · Fremont, MI (1) · San Jose, CA (1) · Sayville, NY (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 (303) 255-5352
- Who called me from (303) 255-5352?
- 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 Qwest Corporation in Denver, CO (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (303) 255-5352 a scam?
- Canadial rates it low risk, from 12 complaints, latest Sep 24, 2025, 67% robocalls.
- Is (303) 255-5352 a debt collector or collection agency?
- Nothing says it is: none of its 12 complaints describe debt collection.
- Should I call (303) 255-5352 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) 255-5352 been reported?
- 12 complaints to the U.S. FTC's Do Not Call registry between Aug 20, 2022 and Sep 24, 2025.
- What do callers from (303) 255-5352 say?
- 4 of its 12 FTC complaints (33%) are about dropped calls or silence, against 15% of the 31,961 FTC complaints about all numbers in area code 303.
- When does (303) 255-5352 call?
- In FTC complaints, the most common time was the 9 a.m. hour (3 of 12 calls with a time); the most common day was Monday (5 of 12).
Data updated: FTC complaints through Nov 13, 2026; numbering records as of Nov 3, 2026; community reports live. How this page is built.