The number “24” refers to how many bits are contained in the network. An IP addresses has two parts, the network number and the host number. From which the number of bits left for the address space can be calculated.
In other words, 24 means that the first 24 bits of the IP address are part of the network number (192.168.0), the last part is part of the host addresses (1-254). Since all IPv4 networks are 32 bits, and each “section” of the address represented by decimal points has eight bits, “192.0”.
What is IP Address Mask ?
One part identifies the host (computer), the other part identifies the network to which it belongs. To better understand how IP addresses and subnet masks work, look at an IP address and see how it is organized.
How many IPs are in 24 ?
The number of IP addresses in an IPv4 block can be calculated by taking 2 to the power of 32 minus the block size. So, this is how you calculate how many IP addresses are in an IPv4/24 block:
- 2(32-block) = IP addresses
- 2 (32-24) = IP addresses
- 28 = 256
- IPv4/24 = 256 IP addresses
As shown by the above calculation , There are a total of 4096 IP addresses in a /24 block. However, one IP is a network addresses and the other is a broadcast .
- 256 total IP addresses
- 1 network IP address
- 1 broadcast IP address
= 254 usable IP addresses
How much is a 24 IP block ?
The larger blocks show a deeper bottom at ~$5 per IP in 2015, followed by a quite linear rise to $23 per IP for /16s, and $26 per IP for very large blocks, by the end of 2020.
| /17 and larger | /18 to /22 | /23 and /24 |
| $38-40 USD per IP | $38-40 USD per IP | $38-40 USD per IP |
How to find the first valid IP address ?
The way used to find the first and last IP addresses are the same in easy mask.
- To find the first valid IP address, copy the subnet number and add 1 to the fourth octet.
- To find the last valid IP addressess, copy the broadcast addresses and subtract 1 to the fourth octet. Octet. Address. 130. 102. Mask. 255. 255. 252. Subnet number.