Area Code 313: Who Called Me From Detroit?
Your 313 number, with +1 in front
Detroit 313 numbers: real line or robocall?
Debt reduction calls are the biggest topic in reports about the 313 area code. Check this number before you talk money with anyone.
Where is area code 313?
Area code 313 is Detroit and a few cities right next to it, such as Dearborn. All its exchanges belong to six Detroit rate-center zones. In the numbering data we hold, no other code is issued in the 313 exchanges, so unlike most big-city codes in this list, a Detroit landline still starts with 313.
| Location | Detroit, Michigan |
|---|---|
| State | Michigan |
| Time zone | Eastern Time (ET) |
| Origin | Set up in 1947 for southeastern Michigan |
| Shares its area with | No other code |
| Exchanges assigned | 769 |
| Local rate centers | 6 |
| Carriers holding exchanges | 35 |
Detroit and its neighbors
313 is Detroit inside Wayne County, plus a few close neighbors such as Dearborn. The city is split into six numbered rate-center zones, which you’ll see in the table below. Since the 1990s the suburbs have had their own codes, so a 313 number usually points to the city itself.
Where 313 exchanges are
| Place (rate center) | Exchanges |
|---|---|
| Detroit (zone 5) | 272 |
| Detroit (zone 6) | 155 |
| Detroit (zone 1) | 152 |
| Detroit (zone 4) | 71 |
| Detroit (zone 2) | 69 |
| Detroit (zone 3) | 50 |
313 robocall and scam complaints
Detroit’s FTC reports are led by debt pitches: 424 of them promise to shrink card, mortgage or student loan payments. 983 of the 1,536 FTC reports were robocalls. FCC complaints rose in the last six months (102 against 69), and text messages are a large share of them.
313 FCC complaints by year
*2026-10-21
313 complaints month by month
| Nov 25 | Dec 25 | Jan 26 | Feb 26 | Mar 26 | Apr 26 | May 26 | Jun 26 | Jul 26 | Aug 26 | Sep 26 | Oct 26 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 19 | 10 | 8 | 20 | 9 | 17 | 16 | 12 | 18 | 28 | 11 |
313 call types, Oct 2025–Oct 2026
- Live caller: 78 (45%)
- Text message: 50 (29%)
- Recorded message (robocall): 46 (26%)
Top 313 FTC topics
- Debt relief offers: 424
- Impostors (government, business or family): 126
- Dropped calls with no message: 116
313 numbers by carrier
- AT&T (landline): 244 exchanges (32%)
- T-Mobile: 141 exchanges (18%)
- AT&T Mobility: 95 exchanges (12%)
- Verizon Wireless: 54 exchanges (7%)
Michigan Bell, the AT&T landline company, holds the largest group, and Omnipoint, part of T-Mobile, holds an unusually large share of Detroit’s mobile exchanges. Bandwidth, which serves internet calling apps, also appears.
A 313 number keeps calling you?
Asking who called me from 313? The free lookup checks the 313 phone number for its carrier and complaints. In the 313 area code, debt pitches are the top complaint topic.
Detroit callers who cross the line can be reported to the FTC at reportfraud.ftc.gov or, for Michigan residents, to the Michigan Attorney General. Unwanted texts: 7726.
Frequently asked questions
What state is area code 313?
Detroit and a few neighboring cities such as Dearborn, on Eastern Time. The suburbs use 248, 586 and 734.
Is 313 a spam area code?
It isn’t, though debt relief calls are common: 424 of the 1,536 FTC reports about 313 numbers were about reducing debt. FCC complaints add up to 641, place 137 of 714. Check the actual number before calling back.
Does 313 cover the Detroit suburbs?
Only the closest ones, such as Dearborn. Most suburbs use 248 (Oakland County), 586 (Macomb County) and 734 (Wayne County west and Ann Arbor).
Why do 313 numbers call about debt?
Debt reduction pitches lead the named topics in FTC reports on 313 numbers. If you owe money, talk directly to your lender or a nonprofit credit counselor; companies that call out of the blue offering to erase debt are a common scam.
Is there a new area code for Detroit?
Not in the numbering data we use: 313 numbers aren’t shared with any other code in the same exchanges.
Is 313 a Detroit cell phone number?
Often yes. Mobile carriers hold a large part of 313: Omnipoint, a T-Mobile company, has 141 exchanges and AT&T Mobility 95. The lookup confirms the line type of the specific number.
Which time zone is Detroit’s 313 in?
Detroit is on Eastern Time, unlike western parts of Michigan’s Upper Peninsula. It shares the time with New York.
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