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My ISP seems to be blocking Port 53 if it is not connecting to one of its DNS servers. I was able to prove this through nslookup
tests. Here are my tests:
C:\Users\admin>nslookup google.com
Server: UnKnown
Address: 10.198.220.124
Non-authoritative answer:
Name: google.com
Addresses: 2404:6800:4008:c01::64
120.28.26.34
120.28.26.45
120.28.26.39
120.28.26.50
120.28.26.35
120.28.26.55
120.28.26.59
120.28.26.49
120.28.26.24
120.28.26.20
120.28.26.40
120.28.26.30
120.28.26.29
120.28.26.54
120.28.26.25
120.28.26.44
C:\Users\admin>ping 8.8.8.8
Pinging 8.8.8.8 with 32 bytes of data:
Reply from 8.8.8.8: bytes=32 time=1974ms TTL=40
Reply from 8.8.8.8: bytes=32 time=1213ms TTL=40
Reply from 8.8.8.8: bytes=32 time=165ms TTL=40
Reply from 8.8.8.8: bytes=32 time=172ms TTL=40
Ping statistics for 8.8.8.8:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 165ms, Maximum = 1974ms, Average = 881ms
C:\Users\admin>nslookup google.com 8.8.8.8
DNS request timed out.
timeout was 2 seconds.
Server: UnKnown
Address: 8.8.8.8
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to UnKnown timed-out
C:\Users\admin>tracert -d 8.8.8.8
Tracing route to 8.8.8.8 over a maximum of 30 hops
1 2 ms 2 ms 2 ms 192.168.43.1
2 132 ms 407 ms 139 ms 10.188.8.118
3 111 ms 156 ms 127 ms 10.188.8.117
4 121 ms 136 ms 146 ms 10.163.143.114
5 129 ms 137 ms 139 ms 10.163.143.164
6 141 ms 151 ms 155 ms 10.163.143.164
7 126 ms 137 ms 138 ms 10.163.143.114
8 129 ms 139 ms 138 ms 10.163.143.124
9 133 ms 138 ms 138 ms 10.198.182.117
10 130 ms 137 ms 138 ms 10.198.182.138
11 233 ms 137 ms 137 ms 10.198.183.6
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
15 * * * Request timed out.
16 * * * Request timed out.
17 201 ms 219 ms 179 ms 72.14.223.161
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 148 ms 157 ms 158 ms 8.8.8.8
Trace complete.
My ISP's DNS servers are slow and intermittent. Is there a way to override this? Is it possible to maybe set a DNS server that runs on a different port? Are public DNS servers like OpenDNS and Google Public DNS running these services on other ports?
Can you show the DNS configuration in TCP/IP4 of network adapter please – grvpanchal – 2013-05-25T18:37:59.313
2I think the best solution to this problem is to call your ISP and tell them to unblock it. If they don't, chew them out and switch ISPs. – Tanner Faulkner – 2013-05-25T19:46:00.823