Switch from querying "com" to ""

[silverwind]

As discussed in #4, we should switch from querying the "com" zone to querying "" once this is resolved:

tjfontaine/native-dns-packet#13

"" is the root domain name, to which the root servers answer with an authorative answer for themselves. This should further improve the reliabilty of this check for cases where the "com" zone is not replicated.

[silverwind]

This is fixed in native-dns-packet, but I still can't depend on the npm version of native-dns yet because of tjfontaine/node-dns#63.

[silverwind]

Just an update here, tjfontaine/node-dns#63 got merged, but it's not published on npm yet.

[silverwind]

tar dependency begone! 🎉

The answer should probably be validated, but it will involve nasty byte parsing.