A consumer in Thornton, CO told the FCC about a call from a live person from this number on Aug 4, 2026.
The subject they gave: Home improvement.
Landline · Denver, CO
(303) 778-1000Who called from 303-778-1000?
Caution
303-778-1000 has 5 complaints filed with the FTC and FCC since Sep 2023, the latest . 80% describe a robocall or recorded message. The most common subject: Home improvement. People in 2 states complained, the most of them in Colorado (4). The number's exchange (303-778) was assigned to Lumen (CenturyLink) in Denver, CO (landline), though numbers can be ported or spoofed.
59ShadyCall
Score
Score
- Reports
- 0
- FTC/FCC complaints
- 5
- Lookups
- 1
- Last seen
No ShadyCall reports about 303-778-1000 yet
1 person has looked this number up, but nobody has written a report yet.
If 303-778-1000 called or texted you, add a report below. Even "silent call, no message" helps the next person decide whether to answer.
5 complaints to the FTC and FCC about 303-778-1000
Consumers filed these complaints with the Federal Trade Commission (Do Not Call Registry) and the Federal Communications Commission, which publish them as open data. They are what people told the government, not verified findings, and the number on a complaint is the caller ID people saw, which can be spoofed.
FTC complaints0
FCC complaints5
Robocalls80%
First / lastSep 11, 2023
Aug 5, 2026
Aug 5, 2026
Complaints by month
Dec 2025Nov 2026
What it was about
How it came
Where the people complaining live
Latest complaints
A consumer in Spartanburg, SC told the FCC about a robocall from this number on Oct 27, 2024.
The subject they gave: Home improvement.
A consumer in Littleton, CO told the FCC about a robocall from this number on Oct 10, 2023.
A consumer in Arvada, CO told the FCC about a robocall from this number on Sep 27, 2023.
The subject they gave: Home improvement.
A consumer in Engelwood, CO told the FCC about a robocall from this number on Sep 10, 2023.
What to do if 303-778-1000 calls
- Don't answer, or hang up. Don't press any keys, don't say "yes", and never read out a code sent to your phone.
- Don't call back. Calling back confirms your number is live, and it gets sold on.
- Never tap a link in a text from this number. Forward the text to 7726 (SPAM), then delete it.
- Block it. Here is how to block a number on iPhone, Android and landlines.
- Report it to the FTC at ReportFraud.ftc.gov (or donotcall.gov for sales calls), and here on ShadyCall so others are warned.
- Lost money or gave out details? Call your bank or card issuer now, then go to IdentityTheft.gov. What to do if you've been scammed.
Questions about 303-778-1000
Who called me from 303-778-1000?
We don't have a name. Consumers filed 5 complaints about 303-778-1000 with the FTC and FCC, most often about Home improvement, typically telemarketer / sales. If you find out who it was, add a report on this page.
Is 303-778-1000 a scam?
Its ShadyCall Score is 59/100 (caution), from 5 FTC/FCC complaints. Reports and complaints are people's own experiences, not verified facts, and scammers can fake a caller ID.
Where is 303-778-1000 from?
303-778-1000 belongs to the 303-778 exchange in the 303 area code, assigned to Denver, CO. The caller may not really be there: numbers move with their owners and caller ID can be spoofed.
What carrier is 303-778-1000?
The 303-778 exchange was assigned to Lumen (CenturyLink), a landline carrier, according to NANPA. The number may have been ported to another carrier since.
How do I block 303-778-1000?
On an iPhone open Recents, tap the info button next to the number and choose Block Caller. On Android open the Phone app, tap the number in your call history and choose Block (or Block / report spam). Full instructions for every phone and landline.
How do I report 303-778-1000?
Use the form on this page. It's free, anonymous and takes 30 seconds. Also report unwanted sales calls at donotcall.gov and scams at ReportFraud.ftc.gov, and forward spam texts to 7726. If you lost money or shared bank details, call your bank straight away.