What is CIDR and how to read it?

What is the deal with the number ‘32’?

Suffixes

/32

10.0.0.0 in its binary form with all values locked

/31

10.0.0.0 in its binary form with last value unlocked

/30

10.0.0.0 in its binary form with last two values unlocked

/29

10.0.0.0 in its binary form with last three values unlocked
All values are flexible, all combinations are possible

Power of two

IPv6

Thanks for reading

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Olena Kutsenko

Olena Kutsenko

Software engineer, who is passionate about agility and sustainable software development achieved through simplicity, technical excellence and good design.