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IPv6 Prefix Calculation Webinar

Do you need to create an IPv6 network plan or distribute IP address ranges to your customers? Take the IPv6 Prefix Calculation Webinar! This free RIPE NCC Webinar is especially helpful if your LIR already has an IPv6 allocation and wants to use it.

Prerequisites: Before taking this webinar, we expect that you are already familiar with:

  • Hexadecimal numbers
  • IPv6 addresses
  • CIDR slash notation for IPv6


In this webinar, you will learn to subdivide your IPv6 range into smaller blocks. You will also learn to calculate the correct IPv6 prefix for each block. To keep it simple we limit ourselves to nibble (4 bit) boundaries.

After taking this webinar, you will be able to:

  • Subdivide any size IPv6 address blocks into any size smaller blocks (e.g. dividing a /32 into /36 or /48 or /64, limited to the nibble boundaries).
  • Chunk the blocks continuously from the beginning to end (from the first to last sub-block).
  • Subdivide blocks iteratively (a block within a block within a block).
  • Calculate the prefix for any sub-block using different block sizes and consecutive numbers (e.g. the 4th /36 block or the 11th /40 block inside the 7th /36 block ).
  • Calculate the total number of blocks that fit in a larger block (e.g. how many /48s fit in a /32).

Maximum number of participants per webinar session: 20.

After registration, we will send you a confirmation email with a link to access the webinar.

If you have any questions about RIPE NCC Webinars, please .


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