Setup OpenDNS but still i cant acess few sites

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6 comments

  • Avatar
    rotblitz

    Post the complete plain text output of the following commands:

    nslookup -type=txt debug.opendns.com.

    nslookup en.wikipedia.org.uk.

  • Avatar
    milindras

    Thank you. Please see below.

    D:\Program Files\Support Tools>nslookup -type=txt debug.opendns.com.
    Server:  server01.oia.local
    Address:  10.1.1.10

    Non-authoritative answer:
    debug.opendns.com       text =

            "server 5.lon"
    debug.opendns.com       text =

            "flags 20 0 2f6 0"
    debug.opendns.com       text =

            "id 18168273"
    debug.opendns.com       text =

            "source 213.83.93.114:2738"

    D:\Program Files\Support Tools>nslookup en.wikipedia.org.uk.
    Server:  server01.oia.local
    Address:  10.1.1.10

    Non-authoritative answer:
    Name:    en.wikipedia.org.uk
    Address:  81.144.213.187

     

  • Avatar
    rotblitz

    You're using the OpenDNS London location, and your IP address 213.83.93.114 is registered with OpenDNS network ID 18168273.

    This 81.144.213.187 is the right real IP address for en.wikipedia.org.uk returned by OpenDNS.  So if you can't access this site, it is totally unrelated to DNS but must be of a different nature which is that the server at en.wikipedia.co.uk doesn't listen on port 80, or port 80 is blocked by their firewall.

    http://www.downforeveryoneorjustme.com/en.wikipedia.org.uk

    You need to contact the owner of this server then...

  • Avatar
    milindras

    sorry the correct host name should be en.wikipedia.org. Please see below.

    D:\Program Files\Support Tools>nslookup en.wikipedia.org
    Server:  server01.oia.local
    Address:  10.1.1.10

    *** server01.oia.local can't find en.wikipedia.org: Non-existent domain

    When I ping to the host name en.wikipedia.org. i dont get a reply.   The IP address for this website is 91.198.174.192. I get a ping reply to the IP.

     

    Thanks

     

  • Avatar
    rotblitz

    This must be a glitch in your local DNS server or computer.  It works for me.

    nslookup en.wikipedia.org.
    Server:  resolver2.opendns.com
    Address:  208.67.220.220

    Nicht autorisierte Antwort:
    Name:    text-lb.esams.wikimedia.org
    Address:  91.198.174.192
    Aliases:  en.wikipedia.org, wikipedia-lb.wikimedia.org

    And I get ping responses too.  But ping is irrelevant here unless ping is able to resolve the domain name (to what IP address?).  Then it gets its name resolution from somewhere else, e.g. the hosts file or a corrupt local resolver cache. Therefore check and clean your hosts file with an entry for en.wikipedia.org, and flush your local resolver cache to see if this helps.

  • Avatar
    maintenance

    Something else to note: Unless you turned off the nxdomain redirection at the OpenDNS Dashboard (assuming your second lookup there was expected to use OpenDNS in the forwarders), you won't get an nxdomain response, but the address of the OpenDNS Guide page. You may want to check the root hints or remove them.

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