Understand how to update nameservers at your domain registrar to successfully activate Cloudflare.
This article formerly appeared under the title Step 3: Change your domain nameservers to Cloudflare.
To route web traffic through the Cloudflare network, update the nameservers at your domain registrar to resolve your domain’s DNS with Cloudflare's nameservers. Updating your nameservers does not change where your website is hosted.
- Enter your domain at ICANN WHOIS if you are unsure of the registrar. Note the value of the Registrar field:
- Log into the administrator account for your domain registrar.
- Replace the current nameserver records in your registrar account with your domain’s Cloudflare nameservers. Allow up to 72 hours for nameserver changes to globally propagate.
Contact your registrar's support center for the most accurate information. See below for instructions on changing nameservers at popular registrars:
- Refresh the Cloudflare Overview app. If Complete your nameserver setup still appears, Perform the following steps:
- If Complete your nameserver setup no longer appears in the Cloudflare Overview app, you have successfully updated your registrar nameservers and your domain is active at Cloudflare.
Once your domain is active on Cloudflare, review our best practices for active Cloudflare domains.
If you run into issues, refer to our Troubleshooting FAQ for new Cloudflare customers.
Confirm traffic is proxied to Cloudflare
Confirm your domain traffic actively proxies through Cloudflare by browsing to https://www.example.com/cdn-cgi/trace. Replace www.example.com with the domain and hostname proxied to Cloudflare. If proxied to Cloudflare, output similar to the following appears in the browser:
fl=4f177 h=www.example.com ip=2001:1900:2200:7525:749f:9ed1:444c:80b4 ts=1562191016.292 visit_scheme=https uag=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Safari/537.36 colo=SJC http=http/2 loc=US tls=TLSv1.3 sni=plaintext warp=off
If you don't observe similar output:
- Confirm your DNS record is orange-clouded in the Cloudflare DNS app,
- Enter your domain at ICANN WHOIS to confirm the Name Servers only list Cloudflare nameservers for your domain, or
- Contact Cloudflare Support.