You can just obfuscate your names if you really need to keep it hidden. profiles.company.com? coffee.company.com. mail.company.com? tomato.company.com. passw

You can just obfuscate your names if you really need to keep it hidden. profiles.company.com? coffee.company.com. mail.company.com? tomato.company.com. passwords.company.com? tincan.company.com. If you're really paranoid, you can just flood a bunch of misdirects in there as well. If you need 10 internal subdomains, add 100 subdomains with random CNAMEs.