Why DNS Health?
Domain Name System or DNS is a global hierarchical distributed naming system for computer and or services. This service translate domain name to IP Address. For example, google.com to 18.104.22.168.
DNS plays a really important part of our internet precense. When people cannot resolve our domain they cannot view our website and send email to our domain. Not only this but most service is actually depend on domain name for user to access. All of the service will fail if the domain name server is not healthy. It doesn’t mean that the other service is down but users cannot access it normally since it cannot resolve the domain correctly
DNS change is a simple process that actually need planning, for example when you move your website to new server with different IP address you have to change the A record for your website. Before you make the changes, you have to make sure that the time to live (TTL) is as low as possible. In this article we’ll see 10 DNS health checker alternatives that we can use. Their service is mostly similar but some of them provide unique service related to DNS checking