Intel API

Your own address

GET /me returns the free Open API answer for the IPv4 address you are connecting from.

GET /me and GET / return exactly what /open/{ip} returns, for the address you are connecting from. They are free and need no key.

curl -4 -H 'Accept: application/json' https://api.layer3intel.com/me

IPv4 only. A request arriving over IPv6 gets 400 ipv6_not_supported. Force IPv4 with curl -4.
Always fresh. Every call answers for your current address.
CORS: Access-Control-Allow-Origin: *, so a web page can show visitors their own details.

Open API

Free IP intelligence on every IPv4 address, prefix and ASN, with no key, no sign-up and no credits, callable from the browser.

Paid API

The paid /v1 API adds live residential proxy data and attribution to every answer. Send your key as a Bearer token; lookups use credits.