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Troubleshooting Guide: Unable to Verify Domain in GPTs Builder Despite Updated DNS Settings

Have you ever found yourself stuck with a domain verification process, even when it seems like you’ve done everything right? You’re not alone. Many of us have been there, meticulously updating DNS records, only to hit a wall when it comes to getting our domains verified, especially when working with GPT services. In this blog, we’ll explore a commonly overlooked yet crucial aspect of domain verification and provide a step-by-step guide to resolve this issue. Plus, we’ll dive into additional troubleshooting tips for those tricky situations where the primary solution doesn’t quite cut it.

Main Solution:

The Unexpected Culprit: The “www” Prefix

After much head-scratching and experimentation, I stumbled upon a solution that might just be the key to your domain verification challenges. The issue, surprisingly, lies in the domain prefix – specifically, the use of “www.”

Here’s What You Need to Know:

  • The Prefix Problem: It appears that certain GPT services, including those by OpenAI, may not support domain verification when the “www” prefix is included. This small detail can be the difference between success and endless frustration.
  • The Clue: On closer inspection, the example provided by OpenAI (like in their field box for adding a website) typically shows a domain without the “www” prefix, such as “http://openai.com 1″. This subtle hint points towards the preferred format.
  • The Solution: When adding your domain, use just “your-domain.your-extension” – omit the “www.” For instance, instead of “www.promptengine.xyz“, use “promptengine.xyz”. When setting up your DNS, add the TXT record as “@” with the OpenAI key.
  • Success Story: When I switched my domain from “www.promptengine.xyz” to “promptengine.xyz” and updated the TXT record accordingly, the verification sailed through smoothly!

Implementing the Solution:

  1. Remove the ‘www’ Prefix: Edit your domain entry in the GPT service to exclude the “www.” prefix.
  2. Update DNS Settings: In your DNS configuration, ensure the TXT record is added with “@” and the correct verification key.
  3. Verify and Wait: Save the changes and give it some time. DNS updates may take a little while to propagate.

What if It’s Still Not Working?

Don’t worry; if the above solution doesn’t resolve your issue, there are other avenues to explore.

Additional Troubleshooting Tips:

  1. DNS Propagation Time: Remember, DNS changes can take up to 48 hours to fully propagate. Use tools like WhatsMyDNS.net to check the status.
  2. Double-Check DNS Records: Ensure no typos or errors in your DNS records. The details matter.
  3. Clear Local DNS Cache: Sometimes, your local system might be holding onto old DNS information. Clearing your DNS cache can help.
  4. Registrar-Specific Requirements: Some domain registrars have unique requirements for DNS settings. Check with your registrar for any specific guidelines.
  5. Contact Support: If you’re still facing issues, don’t hesitate to reach out to the support team of your GPT service for assistance.
  6. Community Forums: Sometimes, the best solutions come from those who have walked the path before you. Check out community forums for additional insights.


Domain verification can be a tricky process, but often, the solution lies in the details. By understanding the nuances of domain prefixes and DNS settings, you can overcome common hurdles in domain verification for GPT services. Remember, patience and attention to detail are your best friends in this journey. Happy verifying!