Area code
Area code 313 — Detroit, MI
Michigan · in service since 1947
Area code 313 covers the Detroit, MI area. It is an overlay: 679 serves the same area, so neighbors can have different area codes.
Overlay, same area: 679
Local time in Detroit
Spam reports from Sep 23 – Oct 22, 2026
Average #154 of 461 codes
582 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zoneEastern Time
- Local calls10 digits
- Prefixes782 assigned
- Runs out~2Q 2091
- Unwanted call?Block & report
Spam call reports about 313 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 29 |
| Sep 14 | 118 |
| Sep 21 | 127 |
| Sep 28 | 129 |
| Oct 5 | 119 |
| Oct 12 | 123 |
| Oct 19 (4 days) | 128 |
Compared with all codes
- Robocalls
- 68%all codes 75%
- Callers with the same code
- 31%all codes 35%
- Rank by complaints
- #154of 461 · middle half
- FCC complaints, Oct 2025 – Sep 2026
- 14541 about text messages
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Reducing your debt (credit cards, mortgage, student loans) | 137 18% | |
| Calls pretending to be government, businesses, or family and friends | 86 11% | |
| Dropped call or no message | 54 7% | |
| Medical & prescriptions | 30 4% | |
| Energy, solar, & utilities | 11 1% | |
| Home improvement & cleaning | 9 1% |
Where the people who complained live
Sep 11 – Oct 22, 2026
| State | Complaints | |
|---|---|---|
| Michigan | 437 57% | |
| California | 37 5% | |
| Florida | 28 4% | |
| Texas | 28 4% | |
| Virginia | 24 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 313 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| DETROITZN5 | Detroit | Wayne County | 272 |
| DETROITZN6 | Detroit | Wayne County | 155 |
| DETROITZN1 | Detroit | Wayne County | 152 |
| DETROITZN4 | Detroit | Wayne County | 71 |
| DETROITZN2 | Detroit | Wayne County | 69 |
| DETROITZN3 | Detroit | Wayne County | 50 |
Source: NANPA CO codes of Oct 23, 2026; places: U.S. Census Bureau, matched by DialWhere (how).
Is 313 running out of numbers?
Previous forecast (October 2025): 2087, moved later by 4 years.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 313 prefixes
The five largest of 37 original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| Michigan Bell Tel Co. | 244 31% | |
| Omnipoint Communications Midwest Operations, LLC | 141 18% | |
| New Cingular Wireless PCS, LLC | 95 12% | |
| Verizon Wireless | 54 7% | |
| Bandwidth.com CLEC, LLC | 28 4% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 313
What area code is 313?
A Michigan area code, in service since 1947.
Where is 313 area code, and what time zone is it in?
Detroit, MI; Eastern Time.
Why am I getting spam calls from 313?
582 FTC complaints from Sep 23 – Oct 22, 2026, most often about debt reduction (not verified by the FTC; caller ID can be spoofed).
Will 313 get a new area code?
NANPA forecasts exhaust in 2Q 2091; no relief planning listed.