support DNS addresses

Adding this one on our to-do list, as per parts of #693.

Support adding DNS server address services as entries on FilterLists.com.

"syntaxId": 22 has been assigned for entries about DNS adresses, as per #698.

Obstacles:

• Many DNS address services may choose to keep its entries hidden, or may otherwise not have an easily accessible text list for the purposes of viewUrl.
• The DNS addresses may or may not be used for subscribeUrl, but not for viewUrl, as they can’t be viewed per se. If we opt to do so, then a mechanism to divide subscribeUrl and viewUrl for the purpose of DNS service entries may have to be added.
• As some major DNS services (e.g. 1.1.1.1, AdGuard DNS) have 2 DNSv4 addresses (One main, one backup) as well as 2 DNSv6 addresses (Mostly for DNSv6-only users), I believe that support for a viewUrlMirror3 value (or its equivalent for the resolution of the above obstacle) should be added.

Potential entries that could be added:

Most (if not all) addresses that are listed in Blokada. As I’m not a frequent user of Blokada, I only really give my guarantees for AdGuard DNS and possibly OpenDNS off the top of my head, especially now that Norton ConnectSafe has been shut down.

Other services that are listed in Blokada, and which have traits that are desirable for FilterLists.com, but which I can not give personal guarantees for the quality levels of:

• CloudFlare 1.1.1.1
• Comodo Secure DNS
• DNS.WATCH
• FoolDNS
• Keweon
• Quad9
• VeriSign Public DNS
• Yandex DNS Safe

Non-Blokada servers:

• 91.239.26.140, a server run by Vladimir Pissarev, a company fellow of Peter Lowe (of Peter Lowe’s Ad Servers fame) at Tempico Labs, as per https://pgl.yoyo.org/adservers/#tempico-labs-dns-server.
• Neustar Threat Protection
• CleanBrowsing Security Filter

[ghost]

@OpenNIC offers tools that go beyond IPv4/6 addresses, including solid DNSCrypt v1&2 servers (with the basic DNSCrypt blacklist baked in). Importantly, they are outside of ICANN’s control. I’ve been a member for many years and can give my personal recommendation for servers operated by @luggs-co, @Shdwdrgn if one wishes to become whitelisted to use said servers. Luggs runs DNSCrypt servers as well which have never failed me. @fusl’s anycast servers are a good backup for servers geographically closer to one’s own location and require no whitelisting. @JonahAragon is always busy redesigning & implementing improved overall infrastructure among the main “keyholders” who operate OpenNIC’s T1 servers. As was pointed out, each person has different policy’s regarding logging, each of which are laid out in a very clear manner reachable by clicking on the server’s .glue domain listing. There are also distinct flags which tag each .glue listing to ease one’s choice when combing through their listings. 🙂

[collinbarrett]

I think there is nothing else specifically left to do for this issue. We can add more DNS lists as we find them.