How do I implement geotargeting?

Two syntax options are available:

curl -x https://network.joinmassive.com:65535 \
-U '{USERNAME}-country-US-subdivision-CA:{PASSWORD}' \
https://cloudflare.com/cdn-cgi/trace

curl -x https://network.joinmassive.com:65535 \
-U '{USERNAME}?country=US&subdivision=CA:{PASSWORD}' \
https://cloudflare.com/cdn-cgi/trace