How to properly use route table in my case?

Question

I know that there are many tutorial and probably topics about it, but I just can't configure it to work for me. I hope someone could help me :) I'm using Windows 10, but it shouldn't be problem.

So, first here is the website (for example) I'd like to block: http://www.uni-pannon.hu/

Pinging returns:

C:\Windows\system32>ping www.uni-pannon.hu

Pinging www.uni-pannon.hu [193.6.32.90] with 32 bytes of data:
Reply from 193.6.32.90: bytes=32 time<1ms TTL=62
Reply from 193.6.32.90: bytes=32 time<1ms TTL=62
Reply from 193.6.32.90: bytes=32 time<1ms TTL=62
Reply from 193.6.32.90: bytes=32 time<1ms TTL=62

Ping statistics for 193.6.32.90:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms

My default gateway seems to be the following:

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . : vekoll.uni-pannon.hu
   Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
   Physical Address. . . . . . . . . : 74-86-7A-1B-5E-A7
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::e909:6fbe:a499:2979%8(Preferred)
   IPv4 Address. . . . . . . . . . . : 10.3.1.122(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Lease Obtained. . . . . . . . . . : 2016. január 6., szerda 3:30:58
   Lease Expires . . . . . . . . . . : 2016. január 7., csütörtök 18:01:52
   Default Gateway . . . . . . . . . : 10.3.0.1
   DHCP Server . . . . . . . . . . . : 10.3.0.1
   DHCPv6 IAID . . . . . . . . . . . : 74745466
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1E-0E-41-5B-74-86-7A-1B-5E-A7
   DNS Servers . . . . . . . . . . . : 193.6.40.4
                                   193.6.40.2
   NetBIOS over Tcpip. . . . . . . . : Enabled

So, as a route gateway I choose an unreachable host:

C:\Windows\system32>ping 10.3.0.100

Pinging 10.3.0.100 with 32 bytes of data:
Reply from 10.3.1.100: Destination host unreachable.
Reply from 10.3.1.100: Destination host unreachable.
Reply from 10.3.1.100: Destination host unreachable.
Reply from 10.3.1.100: Destination host unreachable.

Ping statistics for 10.3.0.100:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Based on the datails I copied above, I "crafted" the following command:

route -p add 193.6.32.90 mask 255.255.255.0 10.3.1.100

After successfully adding this route, I tried to ping 193.6.32.90 and both the website, but I could reach both of them. Then I tried to access the website via browser, but it's still available.

Could anyone tell me where did I fail? Before anyone telling me to use hosts file, I'd like to find a different method to block websites (via native windows solutions).

Edit: Tried flushing as it's shown here: https://stackoverflow.com/questions/9739156/how-to-flush-route-table-in-windows

Edit2: After trying to add a route which a comment suggested, here's my whole route table:

http://pastebin.com/raw/3CGHSCKx

Answer 1

You can create a null route using the below example. (My destination 74.125.200.100)

First issue the command netstat -nr and find Loopback interface number under interface list section.

C:\Users\Administrator>netstat -nr
===========================================================================
Interface List
 11...00 0c 29 0d bc c9 ......Intel(R) PRO/1000 MT Network Connection
  1...........................Software Loopback Interface 1
 12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter

Then add below route pointing with the loopback interface number.

route add 74.125.200.100 mask 255.255.255.255 1.1.1.1 metric 1 if 1

This should block the destination as shown in the image.