Domain Name System (DNS) is
basically a directory for internet that translates them to IP address. Every
single website has its own IP address on the web. DNS is necessary as it would
be easy for people to remember and access different sites.
Any downtime for every company is a serious case
and could lead to revenue loss and damaged reputation for the company. That’s
why downtime or any issue should be fixed and resolved as soon as possible. However,
Domain Name System issues are a bit tricky. How would you know if you are
having DNS issue? Of course, you have to do it step by step and as quick as it
could be. Quick check is to verify your network connection, check if the DNS
has network connectivity through PING Command. You can save time by doing this
and verify immediately if it is a DNS issue. Note that PING would only work if
ICMP packets are allowed. Find out if all users are affected, check if all are
having same issue within your network and if possible or have backup, check
with another ISP.
In this few troubleshooting, at least you would
be able to isolate the issue and would not need to dive deeper. Yet if quick
troubleshooting does not work then you need to dive deeper, troubleshooting
your network or server’s connectivity.
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