513 Area Code: Cincinnati, Ohio
Area code 513 serves Cincinnati, Hamilton and Middletown, Ohio in the Eastern time zone, in service since 1947. Consumers have filed 6,144 unwanted-call complaints against 4,747 different 513 numbers, 511 of them with the FTC in the last 30 days. Look up the exact number that called you below.
Area code 513 at a glance
- State
- Ohio
- Main cities
- Cincinnati, Hamilton, Middletown, Little Miami, Mason, Clermontville + 19 more
- Counties
- Hamilton County, Warren County, Butler County, Clermont County + 2 more
- Local time
- —Eastern
- In service since
- 1947
- Overlay code
- 283 (2023)
- Codes split off
- 937 (1996)
- Local dialing
- 10 digits (area code + number)
- Exchanges
- 25 rate centers, 784 prefixes
Sources: NANPA area code and central office code records (refreshed weekly); cities and counties matched from US Census Bureau and USGS place names.
Most-reported 513 numbers
Ranked by FTC Do Not Call complaints this month, then all-time FTC and FCC complaints. Only numbers with enough complaints for a full report page are listed. Click one for what it was reported for and where.
- (513) 831-2600Dropped call / no message4 this month2026-10-13
- (513) 696-1920Impostor (government, business, family)2 this month2026-10-03
- (513) 653-5229Warranties & protection plans1 this month2026-10-13
- (513) 829-2800Dropped call / no message1 this month2026-10-08
- (513) 457-71521 this month2026-09-30
- (513) 914-303410 reports2026-08-06
- (513) 699-32061 report2026-09-26
- (513) 457-61780 reports
- (513) 457-70390 reports
- (513) 457-70940 reports
- (513) 457-71630 reports
What calls from 513 numbers are about
1,912 FTC Do Not Call complaints about 513 numbers since Jul 24. The most common named subject is medical & prescriptions, at 10% of complaints (66% of those were recorded messages). Overall, 60% of callers who answered said the call was a robocall.
FTC complaint subjects
- Other / unspecified96250%
- No subject given20111%
- Medical & prescriptions19010%
- Dropped call / no message1689%
- Impostor (government, business, family)1417%
- Debt reduction975%
- Home improvement & cleaning573%
FCC complaints by call type, last 2 years
- Live Voice19150%
- Prerecorded Voice14338%
- Text Message4712%
12% of recent FCC complaints about 513 numbers are about text messages, not calls.
When 513 spam calls come in
30% of complaints that give a call time describe calls between 10am and 1pm. 96% came Monday to Friday, most on Wednesdays, the pattern of call-center robocall campaigns that run on business hours. Times are as consumers reported them to the FTC.
By hour of the day
By day of the week
Is it getting worse?
564 FTC complaints about 513 numbers in the last four weeks, down 12% on the four weeks before. FCC complaints about 513 numbers peaked in 2018 (688); the FTC's daily Do Not Call data has carried most of the volume since mid-2026.
FTC complaints per week
FCC complaints per year
Years shown as '15 to '26; the current year is partial.
Who gets these calls
64% of the FTC complaints about 513 numbers came from people whose own phone number also starts with 513, and 78% from Ohio. Calls that look local to the person receiving them are the signature of neighbor spoofing: robocallers display a number from your own area code because you're more likely to answer.
Where complainants live
- Ohio1,48278%
- Kentucky452%
- Texas352%
- Florida342%
- New York281%
What people with 513 numbers report
People whose own number starts with 513 filed 2,528 FTC complaints since Jul 24. 49% were about calls showing another 513 number. The most common named subject was debt-relief pitches.
Area codes on the calls they reported
- 513 (same code)1,23049%
- 833 (toll-free)632%
- 866 (toll-free)402%
- 855 (toll-free)382%
- 888 (toll-free)351%
Busiest 513 prefixes this month
FTC complaints in the last 30 days, grouped by the first six digits. When one prefix collects complaints about many different numbers, a campaign is usually cycling through that block. The carrier is who NANPA assigned the prefix to, not who made the calls.
| Prefix | Complaints | Numbers | Carrier | Exchange |
|---|---|---|---|---|
| (513) 653-xxxx | 20 | 16 | Twilio | Cincinnati |
| (513) 812-xxxx | 20 | 15 | Nuso, LLC | Lebanon |
| (513) 775-xxxx | 17 | 16 | Onvoy (Sinch) | Bethany |
| (513) 747-xxxx | 15 | 11 | Teleport Communications America, LLC | Hamilton |
| (513) 637-xxxx | 13 | 9 | Onvoy (Sinch) | Mason |
Carriers operating in 513
NANPA has assigned 784 513 prefixes (NPA-NXX central-office codes) across 25 rate centers: 37% to wireless carriers, 62% to landline and VoIP operators; 58% are pooled blocks shared by several carriers. The newest assignment was 2024-02-02. The carrier holding a prefix is who the number was issued through. It says nothing about who is calling, since caller ID is routinely spoofed.
| Carrier | Type | Prefixes | Rate centers | Newest assignment |
|---|---|---|---|---|
| Cincinnati Bell | Incumbent landline (ILEC) | 251(32%) | 12 | 2015-11-10 |
| Verizon Wireless (Cellco Partnership) | Wireless | 125(16%) | 5 | 2023-02-08 |
| T-Mobile USA | Wireless | 79(10%) | 5 | 2022-12-08 |
| AT&T Mobility (New Cingular Wireless PCS) | Wireless | 55(7%) | 6 | 2022-12-08 |
| Level 3 (Lumen) | Competitive / VoIP (CLEC) | 39(5%) | 19 | 2017-02-03 |
| Onvoy (Sinch) | Competitive / VoIP (CLEC) | 36(5%) | 13 | 2023-06-09 |
| Bandwidth.com | Competitive / VoIP (CLEC) | 19(2%) | 11 | 2022-12-08 |
| Spok, INC. | Wireless | 17(2%) | 2 | 2002-09-17 |
| Level 3 (Lumen) | Competitive / VoIP (CLEC) | 16(2%) | 9 | 2006-12-14 |
| PAETEC (Windstream) | Competitive / VoIP (CLEC) | 16(2%) | 14 | 2010-01-26 |
| MCImetro (Verizon Business) | Competitive / VoIP (CLEC) | 14(2%) | 8 | — |
| Teleport Communications America, LLC | Competitive / VoIP (CLEC) | 14(2%) | 6 | 2023-05-09 |
Largest rate centers (exchanges) by prefixes: Cincinnati (502), Hamilton (55), Middletown (38), Little Miami (32), Mason (21), Clermontville (20), Lebanon (18), Bethany (14), Oxford (13), Harrison (8). Source: NANPA Central Office Code Utilized Assignments (public, refreshed weekly).
What to do about calls from 513 numbers
Before you call back
- Medical & prescriptions is the top named complaint here. Don't confirm your Medicare or insurance number to a caller. Medicare won't cold-call you to sell braces, test kits or plans. Read about Medicare scam calls.
- Look up the full number above. A missed call from 513 with no voicemail is usually a robocall; anyone who needs you will leave a message.
- If it looks like a neighbor's number, it may be spoofed. See calls from your own area code.
- Block repeat callers: iPhone, Android, or your carrier's free filter (Verizon, AT&T, T-Mobile).
Report it in Ohio
- Unwanted sales calls and robocalls: donotcall.gov (FTC). Scams and fraud: ReportFraud.ftc.gov.
- Spoofing, texts and call-blocking problems: FCC consumer complaints.
- State complaints: Ohio Attorney General.
- Ohio formally adopted the FTC's National Do Not Call Registry as its own state list rather than running a separate one, so a single free registration at donotcall.gov covers you. State authorities can still enforce against telemarketers who ignore it, in addition to any federal penalty.
Your FTC and FCC reports are published (without your name or number) in the datasets this page is built from. How to report unwanted calls.
Area code 513: questions answered from the data
Where is area code 513?
Area code 513 serves Cincinnati, Hamilton and Middletown, Ohio, covering Hamilton County, Warren County and Butler County and 3 more counties. It has been in service since 1947.
What time zone is area code 513 in?
Area code 513 is in the Eastern time zone (UTC−5, or UTC−4 during daylight saving time). The current local time is shown at the top of this page.
Which area codes overlay 513?
283 (in service 2023) serves the same area as 513. New numbers there can be issued with any of these codes, and local calls need all 10 digits. A spoofed call can display any of them.
What are calls from 513 numbers usually about?
Since Jul 24, consumers filed 1,912 FTC Do Not Call complaints about 513 numbers. The most common named subject was medical & prescriptions: 10% of complaints, 66% of them recorded messages. Across all subjects, 60% of callers who answered the question said the call was a robocall.
When do 513 spam calls happen?
30% of the complaints that give a call time describe calls between 10am and 1pm, and 96% came on weekdays, most often on Wednesday. Times are as consumers reported them.
Are calls from 513 numbers really local?
Not necessarily. 64% of the FTC complaints about 513 numbers came from people whose own phone number also starts with 513, and 78% from Ohio. Calls that look local to the person receiving them are the signature of neighbor spoofing: robocallers display a number from your own area code because you're more likely to answer.
Are 513 robocalls increasing?
In the four weeks to Oct 15, consumers filed 564 FTC complaints about 513 numbers, 12% fewer than the four weeks before.
How do I report a 513 scam call in Ohio?
Report unwanted sales calls and robocalls to the FTC at donotcall.gov, and scams to ReportFraud.ftc.gov. The FCC takes complaints at consumercomplaints.fcc.gov. In Ohio, the Ohio Attorney General also handles consumer complaints about scam calls. Reports feed the public data this page is built from.
Overlay and nearby area codes
Sources: FTC Do Not Call complaints (unverified consumer reports), published every weekday and available here from Jul 24; FCC Consumer Complaint Data, public record, imported nightly; NANPA numbering records. A number appearing here means consumers reported calls that displayed it. Caller ID can be spoofed.