If I'm following, you have a DNS server running that only permits requests to whitelisted domains? When you browse hn, do you need to whitelist each domain to

If I'm following, you have a DNS server running that only permits requests to whitelisted domains? When you browse hn, do you need to whitelist each domain to be able to load content? How many domains do you have whitelisted and how many new ones do you whitelist each month?