IPv6 Visualizer

Expand & visualize prefix lengths bit-by-bit — compare two prefixes side-by-side

2001:0db8:0000:0000:0000:0000:0000:0000/32
2 bits 0–3 0 bits 4–7 0 bits 8–11 1 bits 12–15 : 0 bits 16–19 d bits 20–23 b bits 24–27 8 bits 28–31 : 0 bits 32–35 0 bits 36–39 0 bits 40–43 0 bits 44–47 : 0 bits 48–51 0 bits 52–55 0 bits 56–59 0 bits 60–63 : 0 bits 64–67 0 bits 68–71 0 bits 72–75 0 bits 76–79 : 0 bits 80–83 0 bits 84–87 0 bits 88–91 0 bits 92–95 : 0 bits 96–99 0 bits 100–103 0 bits 104–107 0 bits 108–111 : 0 bits 112–115 0 bits 116–119 0 bits 120–123 0 bits 124–127
Group 1
bits 0–15
Group 2
bits 16–31
Group 3
bits 32–47
Group 4
bits 48–63
Group 5
bits 64–79
Group 6
bits 80–95
Group 7
bits 96–111
Group 8
bits 112–127
Prefix /32
Host bits 96
Coverage 25.0%
Size 296 addresses (huge!)
/48 subnets
65,536
216 subnets
Typical ISP allocation
/56 subnets
16,777,216
224 subnets
Home / small site
/64 subnets
4,294,967,296
232 subnets
Single LAN segment
Prefix bits
Split nibble (boundary)
Host bits