Requests received by Serverless Functions on Pro and Enterprise Teams are now enriched with headers containing information about the geographic location of the visitor:

• X-Vercel-IP-Country – The 2-letter country code of the IP sending the request.

• X-Vercel-IP-Country-Region – The ISO 3166-2 region code associated to the IP.

• X-Vercel-IP-City – The city name associated to the IP.

As an example, a request from Tokyo is now enriched with the following headers:

X-Vercel-IP-Country: JP
X-Vercel-IP-Country-Region: 13
X-Vercel-IP-City: Tokyo

This feature is now automatically activated for all new and existing Serverless Functions on Pro and Enterprise Teams — no code or configuration change needed.

Check out the documentation as well.