353 Area Code: Madison, Wisconsin
Area code 353 serves Madison, Bloom City and Ithaca, Wisconsin in the Central time zone, in service since 2023. Consumers have filed 60 unwanted-call complaints against 47 different 353 numbers, 32 of them with the FTC in the last 30 days. Look up the exact number that called you below.
Area code 353 at a glance
- State
- Wisconsin
- Main cities
- Madison, Bloom City, Ithaca, Albany, Lone Rock, Highland + 5 more
- Counties
- Dane County, Richland County, Green County, Iowa County + 2 more
- Local time
- —Central
- In service since
- September 15, 2023
- Overlay of
- 608
- Local dialing
- 10 digits (area code + number)
- Exchanges
- 11 rate centers, 13 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 353 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.
What calls from 353 numbers are about
41 FTC Do Not Call complaints about 353 numbers since Jul 24. The most common named subject is debt-relief pitches, at 15% of complaints (100% of those were recorded messages). Overall, 84% of callers who answered said the call was a robocall.
FTC complaint subjects
- Other / unspecified2049%
- Dropped call / no message1229%
- Debt reduction615%
- Computer & tech support12%
- No subject given12%
- Medical & prescriptions12%
When 353 spam calls come in
44% of complaints that give a call time describe calls between 9am and 12pm. 88% came Monday to Friday, most on Wednesdays. Times are as consumers reported them to the FTC.
By hour of the day
By day of the week
Is it getting worse?
FCC complaints about 353 numbers peaked in 2015 (6); 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
68% of the FTC complaints about 353 numbers came from Wisconsin residents, but only 0% from people with 353 numbers themselves. The calls are mostly regional rather than aimed at 353 phones specifically.
Where complainants live
- Wisconsin2868%
- Florida410%
- Ohio37%
- New Jersey25%
- Texas12%
Busiest 353 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 |
|---|---|---|---|---|
| (353) 465-xxxx | 14 | 3 | Ahoi LLC | Madison |
| (353) 200-xxxx | 5 | 5 | Onvoy (Sinch) | Madison |
| (353) 222-xxxx | 5 | 5 | Onvoy (Sinch) | Lone Rock |
Carriers operating in 353
NANPA has assigned 13 353 prefixes (NPA-NXX central-office codes) across 11 rate centers: 8% to wireless carriers, 85% to landline and VoIP operators; 100% are pooled blocks shared by several carriers. 5 prefixes were assigned in the last 12 months (newest 2026-06-04). 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 |
|---|---|---|---|---|
| Onvoy (Sinch) | Competitive / VoIP (CLEC) | 10(77%) | 10 | 2025-12-26 |
| Ahoi LLC | Unclassified | 1(8%) | 1 | 2026-06-04 |
| T-Mobile USA | Wireless | 1(8%) | 1 | 2026-05-08 |
| Wavenation, LLC | Competitive / VoIP (CLEC) | 1(8%) | 1 | 2025-12-22 |
Largest rate centers (exchanges) by prefixes: Madison (3), Albany (1), Belleville (1), Bloom City (1), Centerville (1), DeForest (1), Highland (1), Ithaca (1), Lone Rock (1), Mazomanie (1). Source: NANPA Central Office Code Utilized Assignments (public, refreshed weekly).
What to do about calls from 353 numbers
Before you call back
- Debt reduction is the top named complaint here. Don't pay upfront fees for debt relief; the FTC's Telemarketing Sales Rule bans them. Talk to your lender or a nonprofit credit counselor instead. Read about debt-relief robocalls.
- Look up the full number above. A missed call from 353 with no voicemail is usually a robocall; anyone who needs you will leave a message.
- Block repeat callers: iPhone, Android, or your carrier's free filter (Verizon, AT&T, T-Mobile).
Report it in Wisconsin
- 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: Wisconsin Department of Agriculture, Trade and Consumer Protection.
- Wisconsin 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 353: questions answered from the data
Where is area code 353?
Area code 353 serves Madison, Bloom City and Ithaca, Wisconsin, covering Dane County, Richland County and Green County and 3 more counties. It has been in service since September 15, 2023.
What time zone is area code 353 in?
Area code 353 is in the Central time zone (UTC−6, or UTC−5 during daylight saving time). The current local time is shown at the top of this page.
What are calls from 353 numbers usually about?
Since Jul 24, consumers filed 41 FTC Do Not Call complaints about 353 numbers. The most common named subject was debt-relief pitches: 15% of complaints, 100% of them recorded messages. Across all subjects, 84% of callers who answered the question said the call was a robocall.
When do 353 spam calls happen?
44% of the complaints that give a call time describe calls between 9am and 12pm, and 88% came on weekdays, most often on Wednesday. Times are as consumers reported them.
Are calls from 353 numbers really local?
Not necessarily. 68% of the FTC complaints about 353 numbers came from Wisconsin residents, but only 0% from people with 353 numbers themselves. The calls are mostly regional rather than aimed at 353 phones specifically.
How do I report a 353 scam call in Wisconsin?
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 Wisconsin, the Wisconsin Department of Agriculture, Trade and Consumer Protection 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.