I live in Istanbul and loads of websites are banned here by the government. In order to be able to enter the banned sites like YouTube, some of my friends are using a specific DNS server address instead of obtaining DNS server address automatically. In that way they can bypass the ban. The addresses are as follows:
Preferred DNS server: 220.127.116.11
Alternate DNS server: 18.104.22.168
My question is, if I change my setting like this, will I have any disadvantages?