Site key for wild card domain

Hi, we are a large website with tens of POS's being served, and new ones are rolled out every few weeks. Currently Recaptcha requires every domain to be listed separately which is a little painful for us for the reasons above. Is it possible to associate a site key with wild card TLD? mysite.*? -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://bit.ly/1dkFnYd. For more options, visit http://bit.ly/P65DvS.