(303) 579-3948
Denver, CO
(303) 579-3948 has 1 FTC complaint.
- No new complaints since Jan 31, 2024 (FTC data through Nov 13, 2026).
- Only 3 numbers in the 303-579 block have more complaints, of 8 there with FTC complaints.
Complaint history
1 FTC complaint on Jan 31, 2024.
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
Complaint categories chosen by FTC complainants:
- Not specified / other 1 · 100%
Who called
The number's block is assigned to Verizon Wireless in Denver, CO.
Is it a debt collector?
Nothing says it is: its one complaint doesn't describe debt collection.
Nearby numbers in 303-579
8 numbers in 303-579 have 11 FTC complaints between them (82% robocalls), 1 of them about (303) 579-3948. The commonest categories in the block: Dropped call or no message (27%), Calls pretending to be government, businesses, or family and friends (18%).
The closest reported numbers on either side of (303) 579-3948, in number order.
All reported numbers in 303-579 →Location
- Location of the number block
- Denver, CO, USA
- Block assigned to
- Verizon Wireless
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:
Boulder, 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) 579-3948
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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) 579-3948
- Who called me from (303) 579-3948?
- No complaint names the caller. The number is in a block assigned to Verizon Wireless in Denver, CO (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (303) 579-3948 a scam?
- Canadial rates it low risk, from 1 complaint, latest Jan 31, 2024.
- Is (303) 579-3948 a debt collector or collection agency?
- Nothing says it is: its one complaint doesn't describe debt collection.
- Should I call (303) 579-3948 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) 579-3948 been reported?
- 1 complaint to the U.S. FTC's Do Not Call registry on Jan 31, 2024.
Data updated: FTC complaints through Nov 13, 2026; numbering records as of Nov 3, 2026; community reports live. How this page is built.