(650) 671-1665
(650) 671-1665 is likely an unwanted sales call: 3 FTC complaints, 33% recorded messages, mostly about dropped calls or silence.
- No new complaints since Jun 20, 2023 (FTC data through Nov 13, 2026).
- More FTC complaints than 95% of the 20,239 numbers with FTC complaints in area code 650.
- Only 3 numbers in the 650-671 block have more complaints, of 72 there with FTC complaints.
Complaint history
3 FTC complaints between May 22, 2023 and Jun 20, 2023.
The FTC complaints came in every month from May 2023 to Jun 2023; the busiest was May 2023, with 2 of 3.
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
3 of its 3 FTC complaints (100%) are about dropped calls or silence, against 12% of the 26,373 FTC complaints about all numbers in area code 650.
Complaint categories chosen by FTC complainants:
- Dropped call or no message 3 · 100%
Who called
The number's block is assigned to Bandwidth.com CLEC, LLC.
Is it a debt collector?
Nothing says it is: none of its 3 complaints describe debt collection.
Nearby numbers in 650-671
72 numbers in 650-671 have 95 FTC complaints between them (52% robocalls), 3 of them about (650) 671-1665. The commonest categories in the block: Dropped call or no message (25%), Calls pretending to be government, businesses, or family and friends (14%).
The closest reported numbers on either side of (650) 671-1665, in number order.
All reported numbers in 650-671 →When the calls came
Time of day of 3 calls; most often the 8 a.m. hour (2):
Day of the week of 3 calls:
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
- Rate centre (NANPA abbreviation)
- SSNFRNCSCO, CA, USA
- Block assigned to
- Bandwidth.com CLEC, 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.
2 of 3 complainants (67%) have area code 650, the number's own. Scam callers often show a local-looking number (“neighbour spoofing”); a local business calling nearby customers looks the same.
All 3 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 3 · 100%
Complainants' cities:
San Mateo, CA (2)
As typed on the FTC form, with spelling variants merged; complaints without a city aren't counted.
Searches on Canadial
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Recent community reports
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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 (650) 671-1665
- Who called me from (650) 671-1665?
- 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 Bandwidth.com CLEC, LLC (rate centre SSNFRNCSCO, CA) (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (650) 671-1665 a scam?
- Canadial rates it low risk, from 3 complaints, latest Jun 20, 2023, 33% robocalls.
- Is (650) 671-1665 a debt collector or collection agency?
- Nothing says it is: none of its 3 complaints describe debt collection.
- Should I call (650) 671-1665 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 (650) 671-1665 been reported?
- 3 complaints to the U.S. FTC's Do Not Call registry between May 22, 2023 and Jun 20, 2023.
- What do callers from (650) 671-1665 say?
- 3 of its 3 FTC complaints (100%) are about dropped calls or silence, against 12% of the 26,373 FTC complaints about all numbers in area code 650.
- When does (650) 671-1665 call?
- In FTC complaints, the most common time was the 8 a.m. hour (2 of 3 calls with a time).
Data updated: FTC complaints through Nov 13, 2026; numbering records as of Nov 3, 2026; community reports live. How this page is built.