What is IP subnet dimension (for dummies)?

Question

Computer networks

The RKN has been on the rampage for four days and messages like "Oh my god, they even block /10 subnets!"

What does /10, /24, /n, ... mean?

Answer 1

/10 - abbreviated spelling of the mask.
The mask length can be from 0 to 32 bits.
The longer the mask, the fewer end nodes are included in the network.
Accordingly, everyone is panicking due to the fact that the ILV blocks very large networks indiscriminately (/10 - 4194304 Hosts).
More about masks - https://ru.wikipedia.org/wiki/%D0%9C%D0%B0%D1%81%D...

Answer 2

/10 - subnet mask length.
Here is /23 for example:
© wiki: Subnet mask
Excerpt from the same article:
/32 is one address
/31 is two addresses
...
/24 is 256 addresses
/23 is 512
...
/10 is 4 194 304 addresses
/ 0 - in general, all ipv4 addresses
That is, when blocking / 10, together with several addresses of the cart, the RKN blocked more than four MILLION "neighbors"

Answer 3

The dimension is the total number of possible addresses. /10 is the number of unchanged bits. Addresses are 32 bits or 4 bytes - 4 numbers from 0 to 255. 24 non-changing bits means that only 32-24=8 changes, which is equivalent to 255 addresses - 192.168.0.0/24 are addresses from 192.168.0.0 to 192.168. 0.255 .
32 - 10 = 22 bits - this is 2 ^ 22 = 4194304 addresses (enough for some average country) the
figure is large - hence the indignation.

Answer 4

here is a good article about IP addresses: https://habr.com/post/350878/