Which referrer URL parameter does Vercel track?

I looked through the Vercel Web Analytics docs and couldn't find any documentation on what URL parameters Vercel uses for tracking referrers.

All of the following URL parameters can be used for this:

ref (e.g., example.com?ref=yourcode)
utm_source (commonly used in UTM tracking, e.g., example.com?utm_source=yourcode)
r (shortened version, e.g., example.com?r=yourcode)

So which URL params are used?

Vercel Staff

Hello Paul.

For each collected data point, Web Analytics collect and display:

I agree this should be clarified in the docs. We will forward this feedback to the relevant team.

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