(831) 603-4663
Aptos, CA
(831) 603-4663 is likely a robocall: 8 FTC complaints, 63% recorded messages, mostly about dropped calls or silence.
- No new complaints since Dec 19, 2022 (FTC data through Nov 13, 2026).
- More FTC complaints than 99% of the 10,195 numbers with FTC complaints in area code 831.
- No number in the 831-603 block has more complaints; 85 numbers there have FTC complaints.
Complaint history
8 FTC complaints between Oct 26, 2022 and Dec 19, 2022.
The FTC complaints came in every month from Oct 2022 to Dec 2022; the busiest was Dec 2022, with 5 of 8.
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 8 FTC complaints (50%) are about dropped calls or silence, against 16% of the 12,071 FTC complaints about all numbers in area code 831.
Complaint categories chosen by FTC complainants:
- Dropped call or no message 4 · 50%
- Calls pretending to be government, businesses, or family and friends 2 · 25%
- Not specified / other 2 · 25%
Who called
The number's block is assigned to Onvoy, LLC in Aptos, CA.
Is it a debt collector?
Nothing says it is: none of its 8 complaints describe debt collection.
Nearby numbers in 831-603
The closest reported numbers on either side of (831) 603-4663, in number order.
When the calls came
Time of day of 8 calls:
Day of the week of 8 calls; most often Wednesday (4):
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
- Aptos, CA, 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.
All 8 FTC complainants were in California. Statewide, California ranks #26 of the 50 states and DC for Do Not Call complaints per resident: 283,769 in the last 12 months, 721 per 100,000 people. Spam calls in California.
Where FTC complainants were located (U.S. states):
- California 8 · 100%
Complainants' cities:
California City, CA (1) · Escondido, CA (1) · Moraga, CA (1) · Sacramento, CA (1) · Walnut Creek, CA (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 (831) 603-4663
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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 (831) 603-4663
- Who called me from (831) 603-4663?
- 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 Onvoy, LLC in Aptos, CA (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (831) 603-4663 a scam?
- Canadial rates it low risk, from 8 complaints, latest Dec 19, 2022, 63% robocalls.
- Is (831) 603-4663 a debt collector or collection agency?
- Nothing says it is: none of its 8 complaints describe debt collection.
- Should I call (831) 603-4663 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 (831) 603-4663 been reported?
- 8 complaints to the U.S. FTC's Do Not Call registry between Oct 26, 2022 and Dec 19, 2022.
- What do callers from (831) 603-4663 say?
- 4 of its 8 FTC complaints (50%) are about dropped calls or silence, against 16% of the 12,071 FTC complaints about all numbers in area code 831.
- When does (831) 603-4663 call?
- In FTC complaints, the most common day was Wednesday (4 of 8).
Data updated: FTC complaints through Nov 13, 2026; numbering records as of Nov 3, 2026; community reports live. How this page is built.