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How Do I Troubleshoot Basic DNS Issues Via SSH?


This tutorial is operating under the assumption that you are using SSH.


Step 1. Check the official nameservers for the domain with:
Step 2. Check that the DNS records are @ the official nameservers:
Step 3. Verify when there may have been a recent change to this domain.
Step 4. Check on DNS propagation to see if this appears to be the issue:
Other Very Helpful Tools:

Step 1. Check the official nameservers for the domain with:
whois domain.com

Step 2. Check that the DNS records are @ the official nameservers:
dig +short @[nameserver] domain.com type
ex. dig +short @ns1.west-datacenter.net ifurniss.whsites.net

Step 3. Verify when there may have been a recent change to this domain.
Step 4. Check on DNS propagation to see if this appears to be the issue:
http://whatsmydns.net/#A/domain.com
ex. http://whatsmydns.net/#A/ifurniss.whsites.net/

**Free Proxy servers**
http://zend2.com/
http://freeproxyserver.net/

**Sites to check website**
http://meormyhost.com/
http://downforeveryoneorjustme.com/

Other Helpful Tools:

dig +short @nameserver domain type
nslookup domain.com
host domain.com
host -t mx domain.com
host ip_address → reverse DNS whois domain.com http://whatsmydns.com/#A/domain.com

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