Usefull it tools

it tools
  1. Checking if dns is set correctly:  
    1. Overall dns health
      1. https://intodns.com/
    2. windows cmd
      1.  choco install bind-toolsonly
      2. dig @<nameserver> <domain> any
    3. listing all dns
      1. https://toolbox.googleapps.com/apps/dig/#ANY/
    4. listing particular nameserver
      1. https://manytools.org/network/query-dns-records-online/
    5. dns propagation check 
      1. https://dnschecker.org/
      2. https://dnschecker.org/ns-dns-records-of-domain.php
  2. pdf printing joining and spliting
    1. https://tools.pdf24.org/en/creator
  3. windows shell commands
    1. https://ss64.com/

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