Cloudflare IP addresses
Cloudflare has several IP address ranges which are shared by all proxied hostnames.
Together, these IP addresses form the backbone of our Anycast network, helping distribute traffic amongst various edge network servers.
Allow Cloudflare IP addresses
Because of how Cloudflare works, all traffic to your origin server will appear to be coming from Cloudflare IP addresses.
To avoid rate limiting or blocking these requests, you will want to allow Cloudflare IPs at your origin server.
Customize Cloudflare IP addresses
If they do not want to use Cloudflare IP addresses — which are shared by all proxied hostnames — Enterprise customers have two potential alternatives:
- Bring Your Own IP (BYOIP): Cloudflare announces your IPs in all our locations.
- Static IP addresses: Cloudflare sets static IP addresses for your domain. For more details, contact your account team.
Business and Enterprise customers can also reduce the number of Cloudflare IPs that their domain shares with other Cloudflare customer domains by uploading a Custom SSL certificate.