Reserved IPv6 Addresses
These addresses are listed in RFC 5156.
| CIDR | Address Range | Number of Addresses | Routed on the public Internet | Purpose |
|---|---|---|---|---|
| ::/128 | :: | 1 | No | Unspecified address |
| ::1/128 | ::1 | 1 | No | Used for loopback address to the local host. |
| ::ffff:0:0/96 | ::ffff:0.0.0.0 – ::ffff:255.255.255.255 |
232 | No | IPv4 mapped addresses |
| 64:ff9b::/96 | 64:ff9b::0.0.0.0 – 64:ff9b::255.255.255.255 |
232 | Yes | IPv4/IPv6 translation (RFC 6052) |
| 2001::/32 | 2001:: – 2001::ffff:ffff:ffff:ffff:ffff:ffff |
296 | Yes | Teredo tunneling |
| 2001:10::/28 | 2001:10:: – 2001:1f:ffff:ffff:ffff:ffff:ffff:ffff |
2100 | No | Overlay Routable Cryptographic Hash Identifiers (ORCHID) |
| 2001:db8::/32 | 2001:db8:: – 2001:db8:ffff:ffff:ffff:ffff:ffff:ffff |
296 | No | Addresses used in documentation |
| 2002::/16 | 2002:: – 2002:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
2112 | Yes | 6to4 |
| fc00::/7 | fc00:: – fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
2121 | No | Unique local address |
| fe80::/10 | fe80:: - febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
2118 | No | Link-local address |
| ff00::/8 | ff00:: – ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff |
2120 | Yes | Multicast |
Read more about this topic: Reserved IP Addresses
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