https://guides.hackclub.app/api.php?action=feedcontributions&feedformat=atom&user=U083H6XP1H6Nest Wiki - User contributions [en]2026-07-06T21:01:11ZUser contributionsMediaWiki 1.45.3https://guides.hackclub.app/index.php?title=IPv6_vs_IPv4&diff=89IPv6 vs IPv42026-05-30T13:48:43Z<p>U083H6XP1H6: </p>
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<div>IPv6 is the upgraded successor to IPv4, and consist of hexadecimal values instead of integers. An IPv6 looks something like <code>2a01:4f9:3081:399c::1</code>, while an IPv4 looks like <code>1.1.1.1</code>. IPv6 using 128-bit alphanumerical values compared to IPV4's 32-bit numbers means that there are way more possible IPv6 addresses (340 undecillion compared to 4.3 billion), this means that they are also way cheaper. <br />
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While an IPv4 from Hetzner is ~2$/month, most servers come with a free /64 IPv6 block, which is over 18 quintillion IPs. This means we can give everyone a free public IPv6, while it would be too expensive to give everyone an IPv4. If you need to expose a web service you can use the reverse proxy, but if you need to directly access a port you cannot do that over IPv4, and you have to use IPv6.<br />
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You can view your public IPv6 on the dashboard.<br />
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==== What if i need a public IPv4? ====<br />
You can currently purchase a dedicated IPv4 address on the [https://macondo.hackclub.com Macondo] shop for 200 gold per 6 month period, with options for up to 3 years.<br />
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==== IPv6 Support ====<br />
Currently, IPv6 support worldwide sits at around 45%, to test if you can use IPv6 you can use https://test-ipv6.com/.<br />
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==== Binding to IPv6 ====<br />
To bind to IPv6, you need to use <code>::</code> instead of <code>0.0.0.0</code>, <code>::</code> will bind to all interfaces, including IPv4. You can then access your service with <code>[ipv6]:port</code> for example <code>[2a01:4f9:3081:399c::1]:8080</code>. And if you want to point a domain at your ipv6 you can do so with a AAAA record.</div>U083H6XP1H6