Though obviously if you've got your own DNS server in front of the ISP's then you could just configure that to resolve names however you like. Which would then typically cause it to accurately resolve the canary domain by default and thereby cause the application to not use it. Hmm.
Though obviously if you've got your own DNS server in front of the ISP's then you could just configure that to resolve names however you like. Which would then typically cause it to accurately resolve the canary domain by default and thereby cause the application to not use it. Hmm.