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IPv6 Info Center

What is IPv6?

Internet Protocol version 6 (IPv6) is the latest IP revision, developed as a successor to the now depleted IPv4.

IPv6 differs from IPv4 in many ways, including address size, format, notation, and possible combinations:

  IPv4 IPv6
Address Size: 32-bit number 128-bit number
Address Format: Dotted Decimal Notation
Hexadecimal Notation:
Prefix Notation: 2001:0BD8:0234::/48
Number of Addresses: 2^32


Anatomy of an IPv6 Address

Why Adopt IPv6?

Now that ARIN has reached IPv4 exhaustion, we strongly encourage you to adopt IPv6 on your networks. Not only does IPv6 offer a variety of improvements over IPv4, the Internet simply cannot continue to grow without it!

How do I get started?

  1. Make sure your equipment, software, and staff are ready for IPv6. Visit the Get IPv6 Wiki for tips.
  2. Request an IPv6 assignment, or if you plan to distribute IPv6 addresses to your customers, an allocation.
  3. Implement IPv6 on your network's hardware and applications, using the Get IPv6 Wiki for implementation advice and shared experiences from other organizations who have implemented IPv6 already.

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