(303) 963-3157
Denver, CO
(303) 963-3157 is likely a robocall: 4 FTC complaints and 2 FCC complaints, recorded messages in 100% of the FTC complaints.
- No new complaints since Jan 15, 2025 (FTC data through Nov 13, 2026).
- More FTC complaints than 98% of the 26,440 numbers with FTC complaints in area code 303.
- Only 1 number in the 303-963 block has more complaints, of 79 there with FTC complaints.
Complaint history
4 FTC complaints between May 31, 2023 and Jan 15, 2025.
The FTC complaints came in 3 of the 21 months from May 2023 to Jan 2025; the busiest was May 2023, with 2 of 4.
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.
Complaints to the FCC
2 complaints to the U.S. Federal Communications Commission between Nov 4, 2018 and May 22, 2023.
Of the 2 complainants, 1 got a call that hung up or stayed silent and 1 heard a recorded message. They filed them as unwanted calls (2). The calls were about political (1). Complainants were in Colorado (2).
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.
What callers claimed
Complaint categories chosen by FTC complainants:
- Not specified / other 4 · 100%
Who called
The number's block is assigned to Level 3 Communications, LLC in Denver, CO.
Is it a debt collector?
Nothing says it is: none of its 6 complaints describe debt collection.
Nearby numbers in 303-963
The closest reported numbers on either side of (303) 963-3157, in number order.
When the calls came
Time of day of 2 calls; most often the 3 p.m. hour (2):
Day of the week of 3 calls; most often Wednesday (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
- Level 3 Communications, 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.
3 of 4 complainants (75%) have area code 303, the number's own. Scam callers often show a local-looking number (“neighbour spoofing”); a local business calling nearby customers looks the same.
All 4 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 4 · 100%
Complainants' cities:
Denver, CO (3) · Golden, CO (1)
As typed on the FTC form, with spelling variants merged; complaints without a city aren't counted.
Searches on Canadial
Loading…
Real visits to this page, counted once per visitor per day.
Did (303) 963-3157 call you?
Loading…
Answers from visitors, one per person per month (asked at the top of the page).
Report (303) 963-3157
Tell others what the call was about. Reports appear on this page; no account needed.
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) 963-3157
- Who called me from (303) 963-3157?
- No complaint names the caller. The number is in a block assigned to Level 3 Communications, LLC in Denver, CO (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (303) 963-3157 a scam?
- Canadial rates it medium risk, from 6 complaints, latest Jan 15, 2025, robocalls in 100% of the FTC complaints.
- Is (303) 963-3157 a debt collector or collection agency?
- Nothing says it is: none of its 6 complaints describe debt collection.
- Should I call (303) 963-3157 back?
- No. Calling back can confirm that your line is answered. If the caller claimed to be a company or agency you deal with, contact it on a number you find yourself.
- How many times has (303) 963-3157 been reported?
- 4 complaints to the U.S. FTC's Do Not Call registry between May 31, 2023 and Jan 15, 2025 and 2 complaints to the U.S. FCC between Nov 4, 2018 and May 22, 2023.
- When does (303) 963-3157 call?
- In FTC complaints, the most common time was the 3 p.m. hour (2 of 2 calls with a time); the most common day was Wednesday (2 of 3).
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.