Area code 248 – Michigan
248 has served Michigan since 1997, split from 810. All but a handful of its 786 number blocks are allocated (784 of 786), so it is effectively exhausted. AT&T is the largest holder with 45.0% of blocks, ahead of Verizon at 17.1%. It shares its geography with overlay codes 947, so local calls take all ten digits. FTC complaints naming a 248 caller ID totalled 555 in the 33 days to 30 October 2026 (191st of 422 ranked codes).
Who holds 248 number blocks
Share of the 784 assigned NXX blocks (99.7% of the 786 possible), across 28 carriers. This is share of number blocks, not of subscribers.
- AT&T45%
- Verizon17.1%
- T-Mobile10.7%
- Lumen7.9%
- Windstream5.4%
- Other CLEC / VoIP4.6%
- American Messaging2.4%
- Comcast1.9%
- Spok1.5%
- Onvoy1.4%
- Bandwidth1%
- Frontier0.8%
- Charter0.1%
- Vonage0.1%
Spam complaints naming 248
FTC Do Not Call complaints where the caller ID was a 248 number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are frequently spoofed, so these are complaints about the code, not calls proven to originate in it.
Rate centers in 248
NANPA allocates number blocks to rate centers and records their names abbreviated to ten characters, so these are NANPA's codes rather than place names – CHAMPAURBN is Champaign-Urbana, NWYRCYZN01 is a New York City zone. We show them unchanged instead of guessing at the full names. Showing the largest 5 of 21.
Timeline
- 1997 248 goes into service, split from or overlaid on 810.
More about 248
Separate pages for the questions that need their own answer: what time it is there, what the complaint data says, who holds the number blocks, and how the code compares with the one it shares its area with.
Frequently asked about 248
What state is area code 248?
Michigan. It covers the same area as 248/947.
Can I still get a 248 number?
Only from recycled stock. 784 of the 786 available blocks are already allocated, so new numbers in the area normally come from the overlay codes (248/947).
Is a call from 248 a scam?
Not by itself. 248 drew 555 FTC complaints in the 33 days to 30 October 2026, 191st of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number.
Which carrier owns 248 numbers?
AT&T holds the largest share of assigned number blocks at 45.0%. The rest is spread across 3 other carriers. This is share of number blocks, not of subscribers – people keep their numbers when they switch carriers.
Do I need to dial 10 digits in 248?
Yes – ten digits for local calls in 248, because it shares its area with another code.
Sources and verification
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- NANPA – CO Code Assignment Records, All States (utilized), file updated 11/01/2026, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 25 daily files 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
NANPA dialing note for this code: “10D”. Reviewed by the data desk. Spotted an error? Request a correction.