The difference between ipv4 and ipv6 is like comparing a tiny closet to a massive warehouse. IPv4 has about 4.3 billion addresses, which sounds like a lot until you realize how many devices are online now. IPv6 has *340 undecillion* addresses—yeah, that’s a real number.
IPv6 also has better security (IPsec is built-in) and simpler routing. But the big reason sites still use IPv4? Legacy systems and lazy upgrades.
If you wanna test your connection, try [test-ipv6.com](https://test-ipv6.com/).
IPv6 also has better security (IPsec is built-in) and simpler routing. But the big reason sites still use IPv4? Legacy systems and lazy upgrades.
If you wanna test your connection, try [test-ipv6.com](https://test-ipv6.com/).