recaptcha with advanced setting

[RIW SEO]

A reCAPTCHA key is normally tied to a set of individual domains. However, if your list of valid domains is extremely long, fluid, or unknown, we give you the option to turn off the domain name checking on reCAPTCHA's end, and instead check on your server.To do so, in the admin console, go to "Advanced Settings" for your key, and untick the "Domain Name Validation" box.

i found this option is this valid for 100 domian urls??