Community Tip - DNS & Network FAQ Read Me First

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Please review this post and the ones linked and use the :search: in the top right to search for your issue. This Community Tip has questions and answers for the most frequently asked questions about DNS & Networking, the :search: will reveal additional advice & insight.

Background
The DNS & Network category covers topics like IP address, name servers, DNSSEC, CNAME Flattening, :orange: & :grey: and adding DNS records.

DNS Records Showing Wrong IPs or Not Updating

When Cloudflare is enabled on your site and DNS records are orange clouded you will see Cloudflare IPs being returned for your site. This is how we protect your site from attackers as we are a reverse proxy. Rest assured your visitor’s requests are being directed to your origin server set at Cloudflare.com > DNS.

If you are unsure you can always turn off this protection by gray clouding the appropriate DNS record:

Do be aware that if you are expecting a CNAME record after gray clouding you’ll need to ensure CNAME flattening is turned off:

Incorrect Nameservers or Zone Purged From Cloudflare

Do be aware that when you first setup your account, you will need to delegate your DNS to Cloudflare. This means that you are giving us control over the DNS, so that we can route your traffic through our network, and provide you with speed and security features across your site. In order to do this, you need to update your nameservers with your registrar.

When you sign up for your Cloudflare account, we provide you with two name servers that will be used for all the zones you add to your account. Some registrars will provide you with more than two name servers, however, it is important to use only the two provided in your Cloudflare dashboard. Otherwise, your site will not become active, or your zone will be removed from your account.

Cannot Change Nameservers or CNAME Set-Up

In the event that you are simply not able to change your name servers due to organization policy or local DNS limitations, we do support a CNAME setup option to our customers utilizing a Business or Enterprise plan as needed. We have much more information available in our knowledge center, here:

Adding DNS Records and Subdomains

The DNS scan when you setting up an account goes through a dictionary of the most common DNS names, and it queries the current name servers. If it gets a response, it adds the record.
If the DNS records that are quite unique, our system may not detect them and you will need to be added manually.

These articles explain how to enter the most common record types, in a Cloudflare friendly manner:

If you are not sure about records, you can get the appropriate records from your hosting account, and/or by contacting your hosting provider.

If you fail to correctly set-up DNS records for your (sub)domain, you may encounter a ERR_NAME_NOT_RESOLVED error.

If you’re having trouble configuring your DNS (in particular, MX Records) for your email service, we have plenty of information to help you here:

Similarly, you can set-up subdomains by adding additional DNS records after configuring them on your web host:

Please note that before Cloudflare DNS can be configured, you will need to know the appropriate DNS records from your hosting account, you can obtain these by contacting your hosting provider.

Further Questions

Should you have any further questions, you will likely find the answer on our Knowledge Base:

Failing that, you can also engage with us here on the Cloudflare Community to search and ask for general advice, or if you need help with a topic which we don’t yet have an article for.

Information about maintenance and uptime can be found on our Status Page:

Diagnostic tools can be found on our Diagnostic Center:

Community #Tutorials can be found on this site:

If You Need More Help
This community of other Cloudflare users may be able to assist you, when you post, make sure to indicate what research and remediation steps you have taken in order to help the Community help you.

To reach support, login to Cloudflare and then contact Cloudflare Support. When you contact support, make sure to include as much of this information as possible: the specific error message you are seeing, the URLs this is happening on, screen shot of the error, Ray ID, steps to reproduce the error, and HAR file(s). Please indicate what you’ve tried in order to help Customer Support help you.

Expert Comments Appreciated
This Community Tip will remain open for input from Community experts and those familiar with this issue. We really appreciate comments like: “What are the three things to always try”, or “Do this first” or “In my experience”.

This is a Cloudflare Community Tip, to review other tips, click here.

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