When you type a URL into your browser, the Domain Name System (DNS) acts as the internet’s phonebook, translating that human-readable name into a technical IP address. However, when this translation fails, your visitors are met with “DNS_PROBE_FINISHED_NXDOMAIN” or “Site Can’t Be Reached” errors. If you are struggling to fix DNS issues in websites, you are likely dealing with a breakdown in communication between your domain registrar and your web host. These problems often arise following a recent domain transfer, a change in hosting providers, or simply due to local network settings that have become outdated. Understanding how to diagnose and repair these records is vital for maintaining your site’s availability. In this guide, we will walk through the systematic steps to identify and resolve these common connectivity hurdles.

1. Verify Domain Propagation Status

The most common “issue” is actually just a waiting game. When you update your DNS records—such as changing your A-record or name servers—it can take up to 48 hours for those changes to spread across every server on the planet.

Before you attempt to fix DNS issues in websites with technical changes, use a global propagation checker. Tools like DNSChecker.org allow you to see if your new IP address is showing up in different countries. If you see “Green Checks” in some regions but “Red Xs” in others, your settings are likely correct, and you simply need to wait for propagation to finish. This is especially common when you are trying to fix a website not working after deployment.

2. Flush Your Local DNS Cache

Sometimes the website is working perfectly for everyone else, but your own computer is “remembering” the old, broken location of the site. Your operating system stores DNS data locally to speed up browsing, but this cache can become “poisoned” or outdated.

How to Fix It:

  • Windows: Open Command Prompt as an administrator and type ipconfig /flushdns.

  • macOS: Open Terminal and type sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder.

  • Browser: Chrome has its own internal cache. Navigate to chrome://net-internals/#dns and click “Clear host cache.”

3. Check for Incorrect Name Servers

If your domain is registered with one company (like GoDaddy) but your website is hosted with another, you must point your domain to the host’s Name Servers. If these are even slightly misspelled, your site will never load.

To fix DNS issues in websites related to name servers, log in to your domain registrar and ensure the entries match exactly what your host provided (e.g., ns1.yourhost.com). If you recently moved your site and found the process stalled, it might be related to broader WordPress migration failures.

4. Audit Your A-Records and CNAMEs

The A-Record is the most critical DNS setting because it points your domain name directly to the IP address of your server.

  • The Issue: If your server IP changed (common with cloud hosting or VPS upgrades) and you didn’t update the A-Record, the DNS will point to a “dead” server.

  • The Solution: Log into your DNS management zone and verify that the @ record points to the current IPv4 address of your web server. Ensure there are no duplicate A-records, as this can cause the browser to cycle between a working and a broken IP.

5. Resolve “DNS Server Not Responding”

This error often points to an issue with the DNS provider itself or your local router. If you suspect your ISP’s DNS servers are struggling, you can bypass them by using public DNS servers like Google Public DNS (8.8.8.8) or Cloudflare (1.1.1.1).

Switching to a reliable public DNS is a quick way to fix DNS issues in websites that appear only on specific networks. If your site is still unreachable and you suspect a deeper server-side configuration error, you may need to audit your WordPress website for file-level conflicts.

6. Check for DNSSEC Incompatibilities

DNS Security Extensions (DNSSEC) add a layer of authentication to your DNS records to prevent “spoofing.” However, if you move your domain to a new host but leave the old DNSSEC records active at your registrar, the new host’s records will be rejected as “unauthentic.”

When you fix DNS issues in websites after a migration, always check if DNSSEC is enabled. If it is, you may need to disable it temporarily at your registrar and re-enable it once the new host provides the new security keys.

Conclusion

DNS issues are the digital equivalent of a “Road Closed” sign. They prevent any traffic from reaching your server, no matter how well-optimized your site is. By checking propagation, flushing your local cache, and verifying your A-records and Name Servers, you can fix DNS issues in websites and restore your online presence. Most DNS problems are resolved through careful verification of characters and a little bit of patience during propagation. If your site is live but certain elements like the Elementor widgets are not loading, your issue likely lies within your site’s resources rather than the DNS. For more technical details on how DNS records work, visit the official IANA Root Zone Database.