(513) 637-3733
Mason, OH
(513) 637-3733 is likely an unwanted sales call: 3 FTC complaints, 0% recorded messages.
- No new complaints since Apr 11, 2025 (FTC data through Nov 13, 2026).
- More FTC complaints than 96% of the 34,533 numbers with FTC complaints in area code 513.
- Only 7 numbers in the 513-637 block have more complaints, of 500 there with FTC complaints.
Complaint history
3 FTC complaints between Dec 20, 2024 and Apr 11, 2025.
The FTC complaints came in 2 of the 5 months from Dec 2024 to Apr 2025; the busiest was Apr 2025, 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
Complaint categories chosen by FTC complainants:
- Not specified / other 3 · 100%
Who called
The number's block is assigned to Onvoy, LLC in Mason, OH.
Is it a debt collector?
Nothing says it is: none of its 3 complaints describe debt collection.
Nearby numbers in 513-637
500 numbers in 513-637 have 623 FTC complaints between them (36% robocalls), 3 of them about (513) 637-3733. The commonest categories in the block: Dropped call or no message (10%), Medical & prescriptions (6%).
The closest reported numbers on either side of (513) 637-3733, in number order.
When the calls came
Time of day of 3 calls:
Day of the week of 3 calls; most often Friday (3):
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
- Mason, OH, 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.
3 of 3 complainants (100%) have area code 513, 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 Ohio. Statewide, Ohio ranks #20 of the 50 states and DC for Do Not Call complaints per resident: 89,948 in the last 12 months, 755.8 per 100,000 people. Spam calls in Ohio.
Where FTC complainants were located (U.S. states):
- Ohio 3 · 100%
Complainants' cities:
Cincinnati, OH (3)
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 (513) 637-3733
- Who called me from (513) 637-3733?
- No complaint names the caller. The number is in a block assigned to Onvoy, LLC in Mason, OH (NANPA, Nov 3, 2026); numbers can move between carriers, so the caller's provider may differ.
- Is (513) 637-3733 a scam?
- Canadial rates it low risk, from 3 complaints, latest Apr 11, 2025, 0% robocalls.
- Is (513) 637-3733 a debt collector or collection agency?
- Nothing says it is: none of its 3 complaints describe debt collection.
- Should I call (513) 637-3733 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 (513) 637-3733 been reported?
- 3 complaints to the U.S. FTC's Do Not Call registry between Dec 20, 2024 and Apr 11, 2025.
- When does (513) 637-3733 call?
- In FTC complaints, the most common day was Friday (3 of 3).
Data updated: FTC complaints through Nov 13, 2026; numbering records as of Nov 3, 2026; community reports live. How this page is built.