517 Area Code — Lansing, MI
Area code 517 serves Lansing and 3 other cities in Michigan. Local time follows America/New_York. It overlays with 748, so 10-digit dialling is required.
- State
- Michigan
- Primary city
- Lansing
- Timezone
- America/New_York
- In service since
- 1947
- Type
- Geographic
- Overlay codes
- 748
Cities Served by 517
The 517 area code covers 4 cities and communities in Michigan.
- Lansing
- Jackson
- East Lansing
- Mason
About Area Code 517
Area code 517 is a North American Numbering Plan (NANP) area code that has been in service since 1947. It is administered by NANPA on behalf of the FCC and serves the Michigan region anchored on Lansing.
517 now shares its territory with an overlay code (748). 10-digit dialling is required for local calls within this region because the same 7-digit number can be assigned under either code.
Mobile numbers in 517 are portable: a person who moved away from Lansing may still carry a 517 mobile number on their device. If you receive an unexpected call from a 517 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in Michigan, you may also interact with neighbouring or overlay codes (748). See the related codes section below to explore the rest of Michigan.
Other Michigan Area Codes
Continue exploring the Michigan numbering plan.
517 Area Code FAQ
Where is area code 517?
Area code 517 is located in Michigan, primarily serving Lansing and surrounding cities including Jackson, East Lansing, Mason. The region operates on ET (America/New_York) time.
What state is 517 area code?
517 is a Michigan area code. It was put into service in 1947 and shares its geographic footprint with overlay code 748.
Is 517 a scam area code?
517 is a legitimate North American area code allocated by NANPA to Michigan. Like any geographic area code, scammers sometimes spoof 517 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 517 use?
Area code 517 operates on ET (America/New_York). Numbers in this area code follow standard Michigan time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 517 phone number?
Yes. Use the reverse lookup widget above to enter a full 517 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.
What's the difference between 517 and 748?
517 and 748 cover the same Michigan geographic area as overlay codes. Calls between them are local, but you must dial all 10 digits. New phone numbers in this region are assigned from either pool depending on what's available with the carrier at signup.