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Bringing Your Own IPs to Cloudflare

You can use IP networks from INTERLIR Marketplace as BYOIPs for Cloudflare . With Bringing Your Own IPs (BYOIP), Cloudflare announces your IPs in all our locations. Use your IPs with Magic Transit, Spectrum, or CDN services. BYOIP is compatible with Magic Transit, Spectrum, and CDN services.

Get started

To bring your own IPs, you must go through the onboarding process. Work with your account team to understand everything you need to ensure a smooth transition.


Cloudflare requires a service-specific configuration for your prefixes, as well as some requirements common to all BYOIP customers regardless of service type. These requirements are common to all products compatible with BYOIP, such as Magic Transit, CDN, and Spectrum.


There are two major prerequisites before Cloudflare can begin onboarding your IP space.

  1. You must verify your Internet Routing Registry (IRR) records are up to date with the correct prefix/ASN information.
  2. Cloudflare must receive a Letter of Authorization to announce your prefixes, which we will share with our transit partners as evidence that we are allowed to announce the route.

Optionally, if you use the RPKI protocol to sign your routes, Cloudflare can help with this as well. Just let your account team know if you’re interested in using RPKI.

After onboarding, Border Gateway Protocol (BGP)Open external link announcements for customer prefixes can be controlled with the Dynamic Advertisement API or via the Cloudflare dashboard.

How to

Review the content below to learn more about tasks related to BYOIP.

Best practices

Review the topics below for best practices related to BYOIP.