The explosive growth of the Internet was facilitated in part by
the standardization of IPv4, the protocol that allowed the provisioning
of around 4 billion unique addresses. Today, we’ve run out of IPv4
addresses. IPv6 represents the modern Internet where billions of
devices including phones, tablets, cars, household appliances and
a slew of IoT devices need to interact on a global scale.
As more network service providers and platforms transition to
IPv6-only network services, businesses are forced to make the
transition. Cloudflare IPv6 support makes your migration as smooth
and painless as possible.
At Cloudflare we’ve offered full IPv6 support as well as our
IPv6-to-IPv4 gateway since 2012. Enabling IPv6 support is as simple
as enabling IPv6 Compatibility in the dashboard.
Cloudflare’s Automatic IPv6 Gateway allows IPv4-only websites to support
IPv6-only clients with no additional configuration.
No hardware. No software. No code changes. And no need to change
your hosting provider.
Legacy services that require IPv4 support can take advantage of our
Pseudo IPv4 service. Pseudo IPv4 works by adding an HTTP header to
requests established over IPv6 with a “pseudo” IPv4 address.
Using a hashing algorithm, Pseudo IPv4 will create a Class E IPv4
address which will always produce the same output for the same input;
the same IPv6 address will always result in the same Pseudo IPv4 address.
End-to-end security is built into the core of IPv6 with IPSec as
a major protocol requirement. IPSec is a security framework that
contains a suite of cryptographic protocols including Authentication
Header (AH) protocol, Encapsulating Security Payload (ESP) protocol
and Internet Key Exchange (IKE) protocol. IPSec provides network-level
security which means that any application sending/receiving data over
the Internet will have its data encapsulated within the IPv6 packet.
To compliment IPv6 security, Cloudflare offers a slew of security
features including a robust Web Application Firewall to protect against
vulnerabilities like SQL injections, cross-site script attacks, and
zero-day threats. Cloudflare technology automatically detects new
attacks and starts to block an attack for both the particular website
and the entire community. Since Cloudflare continually learns, every
site, regardless of size, makes the system smarter.
Mobile support is mandatory in IPv6 with the implementation of
Mobile IPv6 (MIPv6). Route optimization is a built in feature,
and Neighbor Discovery (NDP) and Address Auto-configuration allow
devices to function in any location, improving roaming capabilities
by enabling mobile nodes to change their point-of-attachment without
changing their IP address. Real User Measurement studies conducted
by some of the Internet’s most popular websites show IPv6 made
their sites 10-15 percent faster.
The Secure Neighbor Discovery (SEND) protocol significantly
reduces your vulnerabilities to man-in-the-middle attacks by
ensuring the sender of an NDP message is the owner of the
To further enhance your visitor’s mobile experience, Cloudflare
caches your assets across an expansive global content delivery
network reducing load times by bringing your content closer to your
visitors. With technologies like Mirage image optimization, which
accelerates the delivery of content to mobile devices by determining
the type of device and connection speed, on average, a website on
Cloudflare loads 2x as fast and uses 60% less bandwidth.
Cloudflare has helped nearly one million websites join the modern
web, making us one of the fastest growing providers of IPv6 web
connectivity on the Internet. Our global network has deflected
some of the largest DDoS attacks, providing unparalleled security
and reliability for our customers and their online assets.
Set up a domain in less than 5 minutes. Keep your hosting provider.
No code changes required.
Everyone’s Internet application can benefit from using Cloudflare.
Pick a plan that fits your needs.
for personal websites and blogs
Our mission is to build a better Internet. We believe every website should have free access to foundational security and performance. Cloudflare's Free plan has no limit on the amount of bandwidth your visitors use or websites you add.
If you want to make your site even faster and more resilient, you can easily upgrade to one of our higher tier plans.