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How to Use NSLOOKUP to Troubleshoot DNS Issues

• nslookup www.google.com

   

  • cmd
    • nslookup google.com
      Server:    srvr.net
      Address: 172.16.224.1Non-authoritative answer:
      Name: google.com
      Addresses: 2607:f8b0:4020:807::200e
      172.217.13.206
  • when you see ip adress — it is good
• or
• cmd
  • nslookup
  • Default Server: srvr.net
    Address: 172.16.224.1>>srvr.net
    Server: srvr.net
    Address: 172.16.224.1Name: srvr.net
    Addresses: fd0a:9b09:1f7:200::126
    10.128.128.126> google
    Server: srvr.net
    Address: 172.16.224.1Name: google.

    > google.com
    Server: srvr.net
    Address: 172.16.224.1

    Non-authoritative answer:
    Name: google.com
    Addresses: 2607:f8b0:4020:807::200e
    172.217.13.206

  • > set type=ns
    > google.com
    Server: srvr.net
    Address: 172.16.224.1Non-authoritative answer:
    google.com nameserver = ns1.google.com
    google.com nameserver = ns2.google.com
    google.com nameserver = ns3.google.com
    google.com nameserver = ns4.google.com
    >ls -d srv.net
  • > server 8.8.8.8
    Default Server: dns.google
    Address: 8.8.8.8> www.google.com
    Server: dns.google
    Address: 8.8.8.8google.com
    primary name server = ns1.google.com
    responsible mail addr = dns-admin.google.com
    serial = 649008673
    refresh = 900 (15 mins)
    retry = 900 (15 mins)
    expire = 1800 (30 mins)
    default TTL = 60 (1 min)
    >set type=all
  • ?    – more information or help
  • exit