How does this website work?Answer: Your browser, using 100% client-side code, tries to contact the test server using 3 different DNS names: one that is IPv4 only, one that is IPv6 only, one that is dual-stack (both IPv4 and IPv6). The success or failure of these tests can tell you how your network is working.
I found a bug / I have something to ask you!Answer: I'll be more than happy to hear from you - use the contact button in the navbar or if you're bored, click here:DWhat is IPv6?Answer: IPv6 stands for Internet Protocol version 6. It is a successor to IPv4 and is designed to address the limitations of IPv4.
What are the limitations of IPv4?Answer: IPv4 is limited to a 32-bit address space, which means there are only around 4.3 billion unique addresses available. This limitation has resulted in the worldwide exhaustion of IPv4 addresses since as early as 2011!How is IPv6 better?Answer: IPv6 is better than IPv4 because it provides a larger address space, improved security features, and better support for mobile devices and new technologies like the Internet of Things (IoT). IPv6 uses 128-bit addresses, which provides an almost unlimited (340,282,366,920,938,463,463,374,607,431,768,211,456 - not even kidding) number of unique addresses.
How much of the Internet is currently IPv6 enabled?Answer: According to the Google IPv6 Adoption statisics, as of March 2023, around 40% of the worldwide Internet and 60% of Greece (where this site is hosted) is IPv6 enabled. France is currently leading the way at 74% IPv6 adoption!
What is dual-stack, and why do we use it?Answer: Dual-stack is a technique used to enable the coexistence of IPv4 and IPv6 on the same network. It involves running both IPv4 and IPv6 protocols on network devices and allowing them to communicate with each other. Dual-stack is currently in use because it provides a transitional mechanism for migrating from IPv4 to IPv6. It allows devices to continue using IPv4 while also supporting the newer IPv6 protocol.
When is the Internet going to switch to IPv6 only?Answer: There is currently no specific date for when the internet will switch to IPv6 only. The transition from IPv4 to IPv6 is expected to take many years and will depend on various factors, including the adoption rate of IPv6 and the availability of IPv4 address space.
My ISP does not provide IPv6 connectivity. What are my options?Answer: If your ISP does not provide IPv6 connectivity, you may be able to use a tunnel broker service (notably: Hurricane Electric's Tunnel Broker), which provides a way to tunnel IPv6 traffic over an IPv4 network. Another option is to use a virtual private network (VPN) service that supports IPv6. However, it is important to note that using a tunnel broker or VPN may result in slower internet speeds and additional latency.