When you register a new domain or migrate your website to a new host, one of the first things you should do is verify your DNS settings. DNS (Domain Name System) acts like the internet’s phonebook: it translates human-readable names like radib.com into numerical IP addresses so browsers can locate your site.
But how can you confirm your DNS is configured correctly? One popular tool for this is who.is This service lets you view your domain’s current DNS records—such as A, MX, CNAME, and TXT—and verify they point to the right server or service.
An Important Note About who.is and DNS Tools
Services like who.is fetch data directly from authoritative DNS servers—not from local or ISP-level caches. This means what you see is the live, official DNS configuration for your domain.
However, keep in mind: these tools do not show cached DNS data. So if you’ve just updated your DNS, some users (depending on their location or ISP) might still see the old records—even if who.is displays the new ones. This delay is known as DNS propagation and can take up to 48 hours to complete globally.
Why Checking DNS Matters
Incorrect DNS settings can cause serious issues:
- Your website may become completely inaccessible.
- Emails might not be delivered or could end up in spam folders.
- Services like SSL certificates, CDNs, or Google Workspace may fail to function.
That’s why—after any DNS change (like switching hosts or connecting third-party services)—you should always double-check your records using tools like who.is, dig, or nslookup.
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Final Thoughts
Tools like who.is offer a clear window into your DNS configuration—but they only show the authoritative records, not the globally cached state. Remember: after a DNS update, be patient during propagation, and always verify your settings twice.
With the right domain and a stable virtual server, you’ll build a website that’s both reliable and ready to grow.
