The 248 area code covers Pontiac, Southfield and 17 more places in Michigan.
Area code 248 is in Michigan, on Eastern Time. In the 248 area, phone numbers are given out most in Oakland County, then Wayne and Bay counties. It has been in service since May 10, 1997. 947 covers the same area, so two neighbours can have different area codes.
- Where
- Oakland County, Wayne County and Bay County, Michigan
- Time zone
- Eastern Time
- In service since
- May 10, 1997
- Shares its area with
- 947 (since 2002)
- Prefixes in use
- 784
- How to dial
- Local calls need all 10 digits: 248-555-0142.
Find out who called you from a 248 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (248) number is on today, use our free carrier lookup.
Works for US & Canada numbers. Enter a 10-digit number, e.g. (415) 555-0132.
Free & rate-limited. No signup required to try.
Pontiac holds 19% of the phone prefixes in area code 248.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 784 prefixes in use shows where 248 numbers are actually given out.
- Pontiac150 prefixes, 19%
- Southfield104 prefixes, 13%
- Royal Oak84 prefixes, 11%
- Birmingham61 prefixes, 8%
- Troy61 prefixes, 8%
- Northville54 prefixes, 7%
- Farmington47 prefixes, 6%
- West Bloomfield37 prefixes, 5%
Also served: Clarkston, Rochester, Holly and Auburn and 7 smaller places.
Michigan Bell (AT&T) holds the most phone number prefixes in area code 248: 250 of 784.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 784 prefixes in use in 248 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| Michigan Bell (AT&T)AT&T's landline company | 250 | 32% |
| AT&T MobilityMobile network | 66 | 8% |
| Level 3 (Lumen)Lumen's business and wholesale network | 58 | 7% |
| Metro by T-MobileT-Mobile's prepaid brand | 49 | 6% |
| PAETEC (Windstream)Windstream's business phone network | 42 | 5% |
| Teleport (AT&T)AT&T's business phone network | 36 | 5% |
| 21 other carriers | 283 | 36% |
60% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
248 has been overlaid once since 1997.
1997
248 starts on May 10, 1997, split off from 810.
2002
On September 7, 2002, 947 is added on top of 248, so new numbers here can get either code.
A 248 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 248 are 313, 810 and 586.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
These are the questions people ask most about area code 248.
Where is area code 248?
248 covers Pontiac, Southfield, Royal Oak and Birmingham and 15 more places in Michigan. In the 248 area, phone numbers are given out most in Oakland County, then Wayne and Bay counties.
What state is area code 248 in?
Michigan. 248 is a Michigan area code on Eastern Time.
What cities use area code 248?
The places holding the most 248 prefixes are Pontiac, Southfield, Royal Oak, Birmingham, Troy, Northville, Farmington and West Bloomfield, out of 19 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 248?
No single phone company owns 248. NANPA's records show Michigan Bell (AT&T) holds the most 248 prefixes, 250 of 784, followed by AT&T Mobility and Level 3 (Lumen). Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 248 in?
248 is on Eastern Time.
When did area code 248 start?
248 went into service on May 10, 1997, when it was split off from 810.
Is 248 the same area as 947?
Yes. 947 (since 2002) covers the same ground as 248. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial a 248 number?
Local calls need all 10 digits: 248-555-0142.
Is 248 a toll-free number?
No. 248 is a regular area code for Pontiac and Southfield in Michigan, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 248?
The closest are 313/734/679 (Detroit, Michigan), 810 (Flint, Michigan), 586 (Mount Clemens, Michigan) and 517 (Lansing, Michigan), measured between the centres of each area.
Who called me from a 248 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 248 a scam?
248 is a real Michigan area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.