Area code
Area code 353 — Madison, WI
Wisconsin · in service since September 15, 2023
Area code 353 covers parts of Wisconsin; the place with the most of its prefixes is Madison. It is an overlay: 608 serves the same area, so neighbors can have different area codes.
Overlay, same area: 608
Local time in Madison
Spam reports from Sep 23 – Oct 22, 2026
Low #396 of 461 codes
36 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zoneCentral Time
- Local calls10 digits
- Prefixes27 assigned
- Runs out~1Q 2065
- Unwanted call?Block & report
Spam call reports about 353 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 0 |
| Sep 14 | 2 |
| Sep 21 | 6 |
| Sep 28 | 3 |
| Oct 5 | 10 |
| Oct 12 | 13 |
| Oct 19 (4 days) | 4 |
Compared with all codes
- Robocalls
- 91%all codes 75%
- Callers with the same code
- 0%all codes 35%
- Rank by complaints
- #396of 461 · bottom quarter
- FCC complaints, Oct 2025 – Sep 2026
- 0
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Dropped call or no message | 10 26% | |
| Reducing your debt (credit cards, mortgage, student loans) | 4 11% | |
| Computer & technical support | 1 3% | |
| Medical & prescriptions | 1 3% | |
| Other | 22 58% |
Where the people who complained live
Sep 11 – Oct 22, 2026
| State | Complaints | |
|---|---|---|
| Wisconsin | 26 68% | |
| Ohio | 3 8% | |
| New Jersey | 2 5% | |
| California | 1 3% | |
| Florida | 1 3% |
October 2026 (partial) report · most reported
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 11 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Source: FCC Consumer Complaints data, unwanted calls filed Oct 1, 2025 – Sep 30, 2026, by caller ID; not verified by the FCC.
Area code 353 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| MADISON | Madison | Dane County | 3 |
| ALBANY | Albany | Green County | 1 |
| BELLEVILLE | Belleville | spans 2 counties | 1 |
| BLOOM CITY | — | — | 1 |
| CENTERVL | — | — | 1 |
| DE FOREST | DeForest | Dane County | 1 |
| HIGHLAND | Highland | Iowa County | 1 |
| ITHACA | — | — | 1 |
| LONE ROCK | Lone Rock | Richland County | 1 |
| MAZOMANIE | Mazomanie | Dane County | 1 |
Plus 1 smaller exchange areas.
Source: NANPA CO codes of Oct 23, 2026; places: U.S. Census Bureau, matched by DialWhere (how).
NANPA record
- Location
- Wisconsin
- Assigned by NANPA
- September 20, 2022
- Local dialing
- 10 digits (NANPA: 10D)
Source: NANPA, NPA database of Oct 24, 2026.
Is 353 running out of numbers?
Previous forecast (October 2025): 2063, moved later by 2 years.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 353 prefixes
The five largest of 6 original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| Onvoy, LLC | 10 37% | |
| Multiple Ocn Listing | 9 33% | |
| 5 19% | ||
| Ahoi LLC | 1 4% | |
| T-Mobile USA, Inc. | 1 4% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 353
What area code is 353?
A Wisconsin area code, in service since September 15, 2023.
Where is 353 area code, and what time zone is it in?
Madison, WI; Central Time.
Why am I getting spam calls from 353?
36 FTC complaints from Sep 23 – Oct 22, 2026, most often about dropped calls or no message (not verified by the FTC; caller ID can be spoofed).
Will 353 get a new area code?
NANPA forecasts exhaust in 1Q 2065; no relief planning listed.