Registrars
- Numbering authorities that rule over a specific region
- ARIN
- LACNIC
- RIPE
- AFRINIC
- APNIC
Hierarchy
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IPv6 Prefix
- 64 Bits
- Globally Unique
- Sometimes Hierarchical (first 16 bits)
- 2001 Everywhere
- 2600 ARIN
- 2800 LACNIC
- 2A00 RIPE
- 2C00 AFRINIC
- Summarize a routing table, squash into a couple hundred.
- If they are contiguous we can group them together in order to have one entry.
- This is how we divided the world in order to make everything much more scalable.
IPv6 Prefix Breakdown
- North America 2600: /12
- ISP LIR 2600:0001 / 32
- Customer 2600:0001:0001:/48
- Customer Subnet 2600:1:1:1::/64
- Subnet range from 2600:1:1:1 - 2600:1:1:5555
- 65,536 subnets
- You can create lots of subnets and each one of them will be isolated from the next one.
- 64 host bits = 18,446,744,073,709,551,616
- 18 quintillion IDs per subnet