Domain DNS validation provides a free DNS health check service, which analyzes the DNS parameters to check if it meets the quality standards or not.
The DNS health check is done by fetching domain DNS records and checking A record, AAAA record, MX record, NS lookup, TXT record, SPF record, and more DNS records to check if they are set up accurately or not. The tool points out any errors or warnings which need to be fixed as per DNS standard rules.
DNS, an acronym for Domain Name System, is the internet's phonebook. Human access information online through domain names. For example, Google.com is a domain name that is easy to remember. On the other hand, the computer-compatible IP address might look like this 192.168.1.1. That isn't easy to remember.
Therefore, DNS is the most critical internet service. It's like a custodian on the internet. From web content to email, all the internet services depend upon DNS functioning.
Each device on the internet has a unique numeric identifier, called an IP address that other devices use to find that particular device.
DNS servers erase the need for humans to memorize IP addresses such as 192.168.1.1 (in IPv4) or more complicated newer alphanumeric IP addresses 2001:4860:4860:0:0:0:0:8844 (in IPv6). (You can use the IPv6 both in a compressed and expanded form.)
The purpose of DNS is to perform the DNS resolution process involving converting a human-friendly domain name (like www.example.com) to its computer-compatible IP address (like 192.168.1.1).
The IP address is assigned to each device on the internet, and it's like a street address used to find the particular address. When someone types a domain name in its browser bar, the DNS servers translate it into a computer-friendly address to locate that webpage on the internet.
Without any doubt, DNS is the busiest and most significant database on the internet. A single web page request may result in 50 DNS queries. So think about the billion people and devices on the internet sending the DNS queries to the DNS servers. The number of requests handled by the DNS servers is unbelievable, but the DNS manages the traffic perfectly and resolves domain names in microseconds.
If you recently switched your web host, started a new website, or made any changes in your DNS records, then DNS propagation is a period when these DNS changes need to be updated on all public DNS servers. The reason changes are not instantaneous, because the DNS servers cache the DNS records information for the specific time, called Time to Live (TTL). The cache may exist directly on the client's computer, on the router, at ISP level, or anywhere on a DNS server.
Usually, that propagation time is between 24 to 48 hours or a maximum of 72 hours. After that time, you can check your DNS propagation results to see whether all the DNS changes are fully propagated or not.
However, if the changes you made do not entirely reflect on the internet after that propagation time, clearing DNS Cache of public DNS server or extensive troubleshooting may be required.
Any significant DNS issue will do your whole business down, and you have to make efforts to restore it as soon as possible.
Monitoring the DNS can be a complex process. Therefore, it would be helpful to have a DNS health test tool for troubleshooting DNS problems.
The domain DNS validator classifies any non-standard procedures followed while setting up your DNS records. The domain DNS validation is performed by querying up the DNS records and verifying them against the established rules used for DNS in the industry.
The domain DNS records are validated through checks applied to the DNS records. These checks are the rules used in the DNS industry which everyone should follow to keep their domain DNS on track. If any rule is being violated or needs improvement, the tool will show an error or a warning to fix it accordingly to ensure your domain has a healthy DNS setup.
For a domain DNS check, to validate the domain DNS records and their configuration, perform the following steps.