517 area code — Lansing, MI geographic
- State
- Michigan
- Major area
- Lansing
- Time zone
- Eastern
- In service since
- 1947-01-01
- Active prefixes
- 610
- Rate centers
- 78
- Carriers
- 57
- Projected exhaust
- 3Q 2056
If a call shows area code 517, the number was issued in the Lansing area — a code active since 1947, on Eastern time. Because of number portability and VoIP, the area code tells you where the number was issued, not where the caller is right now.
NANPA lists 610 active NXX prefixes in 517, assigned to 57 carriers. 405 of those prefixes are pooled — shared between carriers in thousands-number blocks. The code spans 78 rate centers (billing localities).
Official projections put exhaust at 3Q 2056.
Later relief produced 989 (2001) from its territory.
The dialing plan is 7D for home-NPA local calls and 10D across codes.
Use this page to decode where 517 numbers come from — and remember that spoofing means the screen can lie about everything except your own caution.
Largest localities in 517
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Lansing | 162 | — |
| Jackson | 62 | — |
| Howell | 27 | — |
| Adrian | 26 | — |
| Charlotte | 15 | — |
| Hillsdale | 14 | — |
| Coldwater | 14 | — |
| Holt | 13 | — |
| Dimondale | 12 | — |
| Fowlerville | 11 | — |
FAQ
Where is a 517 number from?
517 is assigned to Lansing and surrounding areas of Michigan in the Eastern time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 517 a toll-free number?
No. 517 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Will 517 run out of numbers?
NANPA's current forecast projects exhaust in 3Q 2056 — decades of capacity remain.
Why am I getting spam calls from 517 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 517 number does not prove the call originated there — see our guide to spotting spoofed calls.