Area Code 517 — Lansing, Michigan

NANP area code

517

UTC−5, UTC−4 during daylight saving

State
Michigan
Primary city
Lansing
Time zone
Eastern
In service
1947

The code reaches 100 communities and 14 counties across Michigan.

Was this call legitimate?

The area code itself carries no risk signal. 517 is assigned to Lansing, Michigan, so a call from it is consistent with a real caller in that area — but the digits alone prove nothing, because they can be forged.

Caller ID is set by whoever places the call, not verified by the network. That is why neighbour spoofing works: an operation anywhere in the world can display a number that matches the area code — and often the first three digits after it — of the person being called, so the call looks local. Every community in the 517 territory is a plausible-looking origin for a forged 517 number, which is why one can be made to look like a neighbour to so many people.

If you did not recognise the call: let it go to voicemail — a legitimate caller with real business will leave one. Do not return the call using the number shown; look the organisation up independently and call the number you found. Never confirm personal details, card numbers, or one-time codes to someone who called you, however plausible the number looked.

Codes.zone publishes no complaint counts, risk scores, or caller identities. We hold no data on individual numbers and will not estimate what we cannot source.

Local time and when to call back

Time there now

Eastern · UTC−5, UTC−4 during daylight saving

Reasonable callback window

8:00 AM – 9:00 PM

local time in Eastern

Federal rules bar telemarketing calls to a residence outside 8:00 AM–9:00 PM in the called party's own time zone. It is a sensible bound for a personal callback too — and a caller who rang you well outside it was not observing it.

Overlay codes

517 is the only area code serving its territory — it has no overlay in the current numbering plan for Michigan. Where a region has no overlay, a number's area code still corresponds to a single geographic area.

Cities served

largest 20 by ZIP count
Communities served by area code 517, ranked by how many ZIP codes each holds.
CityZIP codesCounty
Lansing22Eaton County
East Lansing4Ingham County
Jackson4Jackson County
Howell3Livingston County
Okemos2Ingham County
Addison1Lenawee County
Adrian1Lenawee County
Albion1Calhoun County
Allen1Hillsdale County
Bath1Clinton County
Blissfield1Lenawee County
Bridgewater1Washtenaw County
Britton1Lenawee County
Bronson1Branch County
Brooklyn1Jackson County
Burlington1Calhoun County
Camden1Hillsdale County
Cement City1Lenawee County
Charlotte1Eaton County
Clarklake1Jackson County

80 further communities not listed. All Michigan area codes →

Each point is a community served by 517, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Scope every community matched to 517. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot), GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . Coordinates are place reference points, not boundaries.

Counties

Prefixes inside 517

We do not publish the NXX prefixes inside 517. The assignment of prefixes to rate centres comes from LERG routing data, which is proprietary, and we will not estimate it from postal data — ZIP codes and telephone prefixes do not map onto each other. Awaiting a clean-rights NPA-NXX source.