Google Public DNS is not used in trace route
- by IT researcher
In my PC i am using google public DNS as DNS server.In Internet protocol(TCP/IP) properties i have set Preferred DNS server as 8 8 4 4 and Alternate DNS server as 8 8 8 8.
According to me this DNS server should be used to resolve any request to website to its IP by using this DNS servers.(see google DNS and How Domain Name Servers Work).
But when i checked trace route to a website in my PC i got following
Tracing route to www.google.com [74.125.236.80] over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.1.201
2 360 ms 349 ms 292 ms 122.178.216.1
3 145 ms 107 ms 148 ms 122.166.32.121
4 32 ms 53 ms 120 ms 122.166.32.9
5 45 ms 42 ms 121 ms 122.175.255.29
6 63 ms 76 ms 51 ms 182.79.255.45
7 52 ms 134 ms 61 ms 72.14.194.22
8 86 ms 59 ms 72 ms 72.14.232.202
9 106 ms 107 ms 60 ms 66.249.94.39
10 101 ms 103 ms 117 ms 209.85.249.235
11 148 ms 224 ms 276 ms 74.125.236.80 Trace complete.
When i checked all these IP in who.is i found that it is of my ISP. So my question is where does Google public DNS is used? Also how come my ISP's nameserver is used even if i set google public dns as my dns server in my PC?(OR does my any settings are wrong)
