(720) 450-9604
Denver, CO
(720) 450-9604 has 2 FCC complaints.
- No new complaints since Dec 21, 2016 (FTC data through Nov 13, 2026).
Complaint history
Complaints to the FCC
2 complaints to the U.S. Federal Communications Commission between Dec 7, 2016 and Dec 21, 2016; 1 gave it as the number to call back rather than the caller ID.
Both got a call that hung up or stayed silent. They filed them as unwanted calls (2). Complainants were in Florida (1) and Georgia (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.
Who called
The number's block is assigned to Onvoy, LLC in Denver, CO.
Is it a debt collector?
Nothing says it is: none of its 2 complaints describe debt collection.
Nearby numbers in 720-450
23 numbers in 720-450 have 29 FTC complaints between them (38% robocalls). The commonest categories in the block: Warranties & protection plans (14%), Medical & prescriptions (14%).
The closest reported numbers on either side of (720) 450-9604, in number order.
Location
- Location of the number block
- Denver, 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.
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Report (720) 450-9604
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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 (720) 450-9604
- Who called me from (720) 450-9604?
- No complaint names the caller. The number is in a block assigned to Onvoy, LLC in Denver, CO (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (720) 450-9604 a scam?
- Canadial rates it low risk, from 2 complaints, latest Dec 21, 2016.
- Is (720) 450-9604 a debt collector or collection agency?
- Nothing says it is: none of its 2 complaints describe debt collection.
- Should I call (720) 450-9604 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 (720) 450-9604 been reported?
- 2 complaints to the U.S. FCC between Dec 7, 2016 and Dec 21, 2016.
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.