Whats my DNS is an online tool that helps website owners and web admins verify their DNS Records domain by simply inputting their domain name. This tool translates your domain name into an IP Address, which helps the browser to communicate with the server to load the website's resources.

Whenever a new domain is registered, the hosting provider asks the website owner to set up DNS records to route traffic to the server. The website owner enters DNS records into the DNS database using an online panel provided by the domain registrar. When DNS records are set correctly; further, the site owner needs to verify the records by checking DNS A Record using the WhatsmyDNS tool. This tool instantly shows the newly entered DNS information by querying DNS records through various DNS servers worldwide. This process helps to check in which locations the DNS records are propagated. It is essential to check the propagation because DNS records need at least 24 to 48 hours to propagate globally fully.

The WhatsmyDNS tool is also essential for webmasters who have recently updated the existing DNS records of their old domain names. It is important to check for updated records globally to ensure that your users are viewing old or new versions of DNS records that affect routing towards the new website.

The domain DNS records help translate the domain name into an IP Address. Whenever a user opens a URL in the browser, it sends DNS request for translation of domain name into its corresponding IP Address. This IP helps the browser to communicate with the server to get information and resources regarding a web page. The browser cannot communicate with the server until unless the browser receives the IP behind that domain from the DNS Records. 

The Domain DNS Lookup finds the DNS records propagation against the bundle of DNS servers in different locations globally. Just enter the domain name and see which DNS records your domain resolves.

DNS Propagation is a process in which worldwide DNS Servers queries the domain registrars to find updated information regarding DNS records of all newly registered or updated domain names. This process is repeated every few minutes to a few hours, and some DNS Servers fetch new or updated data after a few hours. 

That is why it is said that the DNS propagation may take up to 48 hours to cover lately updated DNS Servers. If you have just updated your DNS records and want to check that the records are updated worldwide or not, then you are at the right place. Just enter the domain name and see what IP reflects against your domain name, and either it is your new server's IP or old server's IP.