Minecraft-Blocked-Servers

Description

Since Minecraft 1.9.3 r2 Mojang wants to ban servers if they don't comply with the Minecraft EULA. Mojang contacts these servers by email ("Mojang BrandEnforcement"). If they still not follow the EULA the server address will be added (hashed with SHA-1) to the list below. If the Minecraft client wants to connect to the banned server, they will just disconnect with the message: "java.net.SocketException: Network is unreachable" which actual means the server is down. (=>misleading message)

Update: Found out that they have also wildcard support. So for example *.server.com or 0.0.0.* can be banned too.

Update 2: Cracked/offline mode player will also receive this message

Update 3: Thanks to @DutchPlays for nearly completing the list of all servers (just one server is missing)

Update 4: All servers are found

List of all blocked servers

https://sessionserver.mojang.com/blockedservers

Reddit post

https://www.reddit.com/r/Minecraft/comments/4h3c6u/mojang_is_blocking_certain_servers_as_of_193_r2/

Minecraft related code

In Minecraft 1.9.3 r2

• Disconnect: File: beg.class Line: 52-67 Method:

private void a(String, int)

• Download the list and check every entry: File: bcd.class Line: 2968-3002 Method:

public boolean a(String)

• Hash generate from address File: bcd.class Line: 3006 Method:

public boolean a(String)

In Minecraft 1.9.3 r3 and 1.9.3 official release

Implementation was re-added. Now with wildcards.

Mojang introduced a new library. This can be found in .minecraft/libraries/com/mojang/netty/1.4

There you can find the method

isBlockedServer(String)

, which is nearly equal to the one in 1.9.3 r2. This makes it possible to block these servers also for older Minecraft versions .