This involves sending some custom headers along with your HTTP GET request, so utilize either the wget command line tool:

wget -S -O /dev/null --header="Pragma: akamai-x-cache-on, akamai-x-cache-remote-on, akamai-x-check-cacheable, akamai-x-get-cache-key, akamai-x-get-extracted-values, akamai-x-get-nonces, akamai-x-get-ssl-client-session-id, akamai-x-get-true-cache-key, akamai-x-serial-no" http://www.sportsnet.ca/

Or the curl command line tool:

curl -H "Pragma: akamai-x-cache-on, akamai-x-cache-remote-on, akamai-x-check-cacheable, akamai-x-get-cache-key, akamai-x-get-extracted-values, akamai-x-get-nonces, akamai-x-get-ssl-client-session-id, akamai-x-get-true-cache-key, akamai-x-serial-no" -IXGET http://www.sportsnet.ca/

The X-Cache-Key setting will contain the amount of time the URL is cached for; in this example, the time is 1 minute (“1m”):

X-Cache-Key: /L/370/77322/1m/www.sportsnet.ca/

Running Windows? No problem – grab a compiled version of wget for Windows.

Source: Stack Overflow – What’s the best way to troubleshoot Akamai headers these days?