Area codes · +1
Area code 248
Area code 248 is centred on Pontiac, Michigan. We hold 5,471 allocated blocks for it across 21 rate centres, split 41% mobile, 52% landline and 6% VoIP.
The other area codes laid over 248
Area code 248 does not have Pontiac to itself. 1 other code — 947 — serves the same rate centres, laid over the same ground rather than dividing it. That is an overlay: a new code added when the old one ran out of numbers, covering the same streets. Two neighbours can hold different area codes, so the code says roughly when a number was issued rather than where it sits.
9472,243 blocks, 20 rate centres, mostly mobile
Each holds its own blocks and its own carrier mix, so a 248 number and a 947 number from the same street can report different line types. Filtering Pontiac by area code needs all 2 of them.
248 is not confined to Pontiac itself: its blocks sit across 21 rate centres, named in the table below.
Michigan is split across 12 area codes — 313, 248, 734, 989, 517, 586 and others. By allocated blocks 248 is the second largest of them, holding 11% of the Michigan total.
Where 248 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why W Bloomfld and Milfdwh Lk are shortened. Names are reproduced as recorded rather than expanded — the abbreviation is the key the block data is filed under.
| Rate centre | Blocks | Share of 248 |
|---|---|---|
| Pontiac | 849 | 16% |
| Southfield | 694 | 13% |
| Royal Oak | 490 | 9% |
| Troy | 466 | 9% |
| Birmingham | 420 | 8% |
| Northville | 373 | 7% |
| Farmington | 372 | 7% |
| W Bloomfld | 256 | 5% |
| Clarkston | 229 | 4% |
| Rochester | 190 | 3% |
| Holly | 169 | 3% |
| Milfdwh Lk | 147 | 3% |
| Auburn Hts | 145 | 3% |
| Walledlake | 121 | 2% |
| South Lyon | 98 | 2% |
| Commerce | 97 | 2% |
| Ortonville | 89 | 2% |
| Drayton Pl | 79 | 1% |
| Oxford | 74 | 1% |
| Lake Orion | 70 | 1% |
| Detroit | 2 | 0% |
Carriers holding the most 248 blocks
Verizon Wireless592 blocks
Michigan Bell Tel Co587 blocks
AT&T Wireless501 blocks
T-Mobile USA, Inc.402 blocks
Metro by T-Mobile347 blocks
Onvoy317 blocks
No carrier holds more than 11% of 248; the blocks are spread thin across many companies.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 248 number still reports the carrier it started with. Closing that gap needs a live query against the routing database. How line type is derived.
Check a single 248 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 248?
Area code 248 covers Pontiac, Michigan. It is not the only code there: 947 is an overlay on the same rate centres, so a Pontiac, Michigan number can start with any of them.
Is a 248 number a mobile or a landline?
It can be either, and the digits do not say which. North American mobile and landline numbers share the same ranges, so the answer comes from the carrier holding the block. In 248 the split runs 41% mobile, 52% landline and 6% VoIP, so landline is the most likely single answer.
Which carriers hold 248 numbers?
The largest holders are Verizon Wireless, Michigan Bell Tel Co, AT&T Wireless. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 248 numbers are there?
The code holds 5,471 allocated blocks in our copy of the numbering plan. A block is 1,000 or 10,000 consecutive numbers depending on how deeply it has been pooled, so 248 covers on the order of 5,471,000 possible numbers — most of which have never been issued to anyone.