How to find out what is blocking port 53?

Question

Computer networks

Good time, day :)
Recently I asked a question about problems with the Internet. The good people and I found out that something was blocking port 53. To be honest, this is the first time I've encountered administration tasks, so I don't know how to solve the problem and I'm asking for support.
OS: Windows 7
Everything else is described in the "solution" at the link :)
Thank you in advance.

Answer 1

At the command prompt (win+R -> cmd), type
netstat -aon | more
find the busy port and process PID there.
In the task manager, by PID, find the application that uses this port.

Answer 2

Attach the result of the ipconfig /all command here.

Answer 3

Blocks either the host's own firewall or the firewall on the gateway.
Disable the Windows firewall on the host (although it does not suffer from this by default, but it can be configured to block anything), if any, disable other firewalls (for example, those included in antivirus packages).
If this does not help, it blocks the gateway and you need to deal with it.

Answer 4

Port 53 is used for DNS
Most likely, the matter is in the DNS servers registered in your Windows 7 OS 193.105.59.2 193.105.59. Seen in your ipconfig /all command
Replace DNS servers.193.105.59.2 193.105.59.6 with other working ones or figure out why traffic on port 53 does not work on these hosts.
If you don’t know for sure which DNS is better to use, register a public DNS from Google, as described in this
article
By the way, what does ping 8.8.8.8 give out, are the packets returned?