http://astrillrcpusdryujyzbsl7wsugvyfc5s6veyrpkojiqbrorgkfdxvid.onion/what-is-my-ip
Unlike IPv4's 32-bit address space, IPv6 uses a 128-bit addressing system, which allows for an almost limitless number of unique addresses—around 340 undecillion, to be precise. An IPv6 address is longer and more complex, consisting of eight groups of four hexadecimal digits, separated by colons (e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334). In addition to offering more addresses, IPv6 brings improvements in terms of routing efficiency, security features, and overall performance.