(603) 810-0646
Nashua, NH
(603) 810-0646 is likely an unwanted sales call: 5 FTC complaints, 40% recorded messages.
- No new complaints since May 6, 2026 (FTC data through Nov 13, 2026).
- More FTC complaints than 98% of the 22,324 numbers with FTC complaints in area code 603.
- Only 2 numbers in the 603-810 block have more complaints, of 303 there with FTC complaints.
Complaint history
5 FTC complaints between Aug 10, 2022 and May 6, 2026.
The FTC complaints came in 3 of the 46 months from Aug 2022 to May 2026.
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
Complaint categories chosen by FTC complainants:
- Not specified / other 5 · 100%
Who called
The number's block is assigned to Telnyx LLC in Nashua, NH.
Is it a debt collector?
Nothing says it is: none of its 5 complaints describe debt collection.
Nearby numbers in 603-810
The closest reported numbers on either side of (603) 810-0646, in number order.
When the calls came
Time of day of 5 calls; most often the 11 a.m. hour (2):
Day of the week of 5 calls; most often Wednesday (5):
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
- Nashua, NH, USA
- Block assigned to
- Telnyx 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.
5 of 5 complainants (100%) have area code 603, the number's own. Scam callers often show a local-looking number (“neighbour spoofing”); a local business calling nearby customers looks the same.
Most FTC complainants were in New Hampshire (4 of 5); others in Vermont (1). Statewide, New Hampshire ranks #28 of the 50 states and DC for Do Not Call complaints per resident: 10,082 in the last 12 months, 712.3 per 100,000 people. Spam calls in New Hampshire.
Where FTC complainants were located (U.S. states):
- New Hampshire 4 · 80%
- Vermont 1 · 20%
Complainants' cities:
Antrim, NH (3) · Burlington, NH (1) · Burlington, VT (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 (603) 810-0646
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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 (603) 810-0646
- Who called me from (603) 810-0646?
- No complaint names the caller. The number is in a block assigned to Telnyx LLC in Nashua, NH (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (603) 810-0646 a scam?
- Canadial rates it medium risk, from 5 complaints, latest May 6, 2026, 40% robocalls.
- Is (603) 810-0646 a debt collector or collection agency?
- Nothing says it is: none of its 5 complaints describe debt collection.
- Should I call (603) 810-0646 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 (603) 810-0646 been reported?
- 5 complaints to the U.S. FTC's Do Not Call registry between Aug 10, 2022 and May 6, 2026.
- When does (603) 810-0646 call?
- In FTC complaints, the most common time was the 11 a.m. hour (2 of 5 calls with a time); the most common day was Wednesday (5 of 5).
Data updated: FTC complaints through Nov 13, 2026; numbering records as of Nov 3, 2026; community reports live. How this page is built.