[jolmg]

> So what i have in mind is that always when searching for a free domain i must look with a "dig" command

The domain can be registered and still not have its DNS setup, so a command like "dig" gives no guarantee that it's available. The better way is to use the whois command to check if it's registered.

> to a encrypted dns server

Unless you believe that your ISP is giving out this info to godaddy, there's really no point in the encryption.

What I do is check a domain with the whois command, and if it's not registered, then I'll check for the general prices of that TLD by checking with different registrars for the price of a domain like randomcrapdfjalijdflijasdlfijasldjf.com if .com is the tld I was going for.

Anyway, the moment you put the actual domain you want to buy into a registrar's text input, you must consider that there's a very real risk that in a few minutes the price may rise, so you better have already determined what price is acceptable for you before you input that.