Find IP IPv4 Network/Subnet and its host address ranges

What is an IPv4 IP address its network and host address ranges?

An IPv4 IP address is an address used in order to uniquely identify a device on an IP network. The address is made up of 32 binary bits, which can be divisible into a network portion and host portion with the help of a subnet mask. The 32 binary bits are broken into four octets (1 octet = 8 bits). Each octet is converted to decimal and separated by a period (dot).

How to Subnet IPv4? Its simple answer is that subnetting is the process of taking a network and splitting it into smaller networks, known as subnets. It's used to free up more public IPv4 addresses and segment networks for security and easier management.
Following are the ranges of IPv4 subnet/network address and their host addresses.

NetworkFirst HostLast Host
3.123.1.0/24 3.123.1.0 3.123.1.255
3.123.2.0/24 3.123.2.0 3.123.2.255
3.123.3.0/24 3.123.3.0 3.123.3.255
3.123.4.0/24 3.123.4.0 3.123.4.255
3.123.5.0/24 3.123.5.0 3.123.5.255
3.123.6.0/24 3.123.6.0 3.123.6.255
3.123.7.0/24 3.123.7.0 3.123.7.255
3.123.8.0/24 3.123.8.0 3.123.8.255
3.123.9.0/24 3.123.9.0 3.123.9.255
3.123.10.0/24 3.123.10.0 3.123.10.255
3.123.11.0/24 3.123.11.0 3.123.11.255
3.123.12.0/24 3.123.12.0 3.123.12.255
3.123.13.0/24 3.123.13.0 3.123.13.255
3.123.14.0/24 3.123.14.0 3.123.14.255
3.123.15.0/24 3.123.15.0 3.123.15.255
3.123.16.0/24 3.123.16.0 3.123.16.255
3.123.17.0/24 3.123.17.0 3.123.17.255
3.123.18.0/24 3.123.18.0 3.123.18.255
3.123.19.0/24 3.123.19.0 3.123.19.255
3.123.20.0/24 3.123.20.0 3.123.20.255
3.123.21.0/24 3.123.21.0 3.123.21.255
3.123.22.0/24 3.123.22.0 3.123.22.255
3.123.23.0/24 3.123.23.0 3.123.23.255
3.123.24.0/24 3.123.24.0 3.123.24.255
3.123.25.0/24 3.123.25.0 3.123.25.255
3.123.26.0/24 3.123.26.0 3.123.26.255
3.123.27.0/24 3.123.27.0 3.123.27.255
3.123.28.0/24 3.123.28.0 3.123.28.255
3.123.29.0/24 3.123.29.0 3.123.29.255
3.123.30.0/24 3.123.30.0 3.123.30.255
3.123.31.0/24 3.123.31.0 3.123.31.255
3.123.32.0/24 3.123.32.0 3.123.32.255
3.123.33.0/24 3.123.33.0 3.123.33.255
3.123.34.0/24 3.123.34.0 3.123.34.255
3.123.35.0/24 3.123.35.0 3.123.35.255
3.123.36.0/24 3.123.36.0 3.123.36.255
3.123.37.0/24 3.123.37.0 3.123.37.255
3.123.38.0/24 3.123.38.0 3.123.38.255
3.123.39.0/24 3.123.39.0 3.123.39.255
3.123.40.0/24 3.123.40.0 3.123.40.255
3.123.41.0/24 3.123.41.0 3.123.41.255
3.123.42.0/24 3.123.42.0 3.123.42.255
3.123.43.0/24 3.123.43.0 3.123.43.255
3.123.44.0/24 3.123.44.0 3.123.44.255
3.123.45.0/24 3.123.45.0 3.123.45.255
3.123.46.0/24 3.123.46.0 3.123.46.255
3.123.47.0/24 3.123.47.0 3.123.47.255
3.123.48.0/24 3.123.48.0 3.123.48.255
3.123.49.0/24 3.123.49.0 3.123.49.255
3.123.50.0/24 3.123.50.0 3.123.50.255
3.123.51.0/24 3.123.51.0 3.123.51.255
3.123.52.0/24 3.123.52.0 3.123.52.255
3.123.53.0/24 3.123.53.0 3.123.53.255
3.123.54.0/24 3.123.54.0 3.123.54.255
3.123.55.0/24 3.123.55.0 3.123.55.255
3.123.56.0/24 3.123.56.0 3.123.56.255
3.123.57.0/24 3.123.57.0 3.123.57.255
3.123.58.0/24 3.123.58.0 3.123.58.255
3.123.59.0/24 3.123.59.0 3.123.59.255
3.123.60.0/24 3.123.60.0 3.123.60.255


3.123.61.0/24 3.123.61.0 3.123.61.255
3.123.62.0/24 3.123.62.0 3.123.62.255
3.123.63.0/24 3.123.63.0 3.123.63.255
3.123.64.0/24 3.123.64.0 3.123.64.255
3.123.65.0/24 3.123.65.0 3.123.65.255
3.123.66.0/24 3.123.66.0 3.123.66.255
3.123.67.0/24 3.123.67.0 3.123.67.255
3.123.68.0/24 3.123.68.0 3.123.68.255
3.123.69.0/24 3.123.69.0 3.123.69.255
3.123.70.0/24 3.123.70.0 3.123.70.255
3.123.71.0/24 3.123.71.0 3.123.71.255
3.123.72.0/24 3.123.72.0 3.123.72.255
3.123.73.0/24 3.123.73.0 3.123.73.255
3.123.74.0/24 3.123.74.0 3.123.74.255
3.123.75.0/24 3.123.75.0 3.123.75.255
3.123.76.0/24 3.123.76.0 3.123.76.255
3.123.77.0/24 3.123.77.0 3.123.77.255
3.123.78.0/24 3.123.78.0 3.123.78.255
3.123.79.0/24 3.123.79.0 3.123.79.255
3.123.80.0/24 3.123.80.0 3.123.80.255
3.123.81.0/24 3.123.81.0 3.123.81.255
3.123.82.0/24 3.123.82.0 3.123.82.255
3.123.83.0/24 3.123.83.0 3.123.83.255
3.123.84.0/24 3.123.84.0 3.123.84.255
3.123.85.0/24 3.123.85.0 3.123.85.255
3.123.86.0/24 3.123.86.0 3.123.86.255
3.123.87.0/24 3.123.87.0 3.123.87.255
3.123.88.0/24 3.123.88.0 3.123.88.255
3.123.89.0/24 3.123.89.0 3.123.89.255
3.123.90.0/24 3.123.90.0 3.123.90.255
3.123.91.0/24 3.123.91.0 3.123.91.255
3.123.92.0/24 3.123.92.0 3.123.92.255
3.123.93.0/24 3.123.93.0 3.123.93.255
3.123.94.0/24 3.123.94.0 3.123.94.255
3.123.95.0/24 3.123.95.0 3.123.95.255
3.123.96.0/24 3.123.96.0 3.123.96.255
3.123.97.0/24 3.123.97.0 3.123.97.255
3.123.98.0/24 3.123.98.0 3.123.98.255
3.123.99.0/24 3.123.99.0 3.123.99.255
3.123.100.0/24 3.123.100.0 3.123.100.255
3.123.101.0/24 3.123.101.0 3.123.101.255
3.123.102.0/24 3.123.102.0 3.123.102.255
3.123.103.0/24 3.123.103.0 3.123.103.255
3.123.104.0/24 3.123.104.0 3.123.104.255
3.123.105.0/24 3.123.105.0 3.123.105.255
3.123.106.0/24 3.123.106.0 3.123.106.255
3.123.107.0/24 3.123.107.0 3.123.107.255
3.123.108.0/24 3.123.108.0 3.123.108.255
3.123.109.0/24 3.123.109.0 3.123.109.255
3.123.110.0/24 3.123.110.0 3.123.110.255
3.123.111.0/24 3.123.111.0 3.123.111.255
3.123.112.0/24 3.123.112.0 3.123.112.255
3.123.113.0/24 3.123.113.0 3.123.113.255
3.123.114.0/24 3.123.114.0 3.123.114.255
3.123.115.0/24 3.123.115.0 3.123.115.255
3.123.116.0/24 3.123.116.0 3.123.116.255
3.123.117.0/24 3.123.117.0 3.123.117.255
3.123.118.0/24 3.123.118.0 3.123.118.255
3.123.119.0/24 3.123.119.0 3.123.119.255
3.123.120.0/24 3.123.120.0 3.123.120.255


3.123.121.0/24 3.123.121.0 3.123.121.255
3.123.122.0/24 3.123.122.0 3.123.122.255
3.123.123.0/24 3.123.123.0 3.123.123.255
3.123.124.0/24 3.123.124.0 3.123.124.255
3.123.125.0/24 3.123.125.0 3.123.125.255
3.123.126.0/24 3.123.126.0 3.123.126.255
3.123.127.0/24 3.123.127.0 3.123.127.255
3.123.128.0/24 3.123.128.0 3.123.128.255
3.123.129.0/24 3.123.129.0 3.123.129.255
3.123.130.0/24 3.123.130.0 3.123.130.255
3.123.131.0/24 3.123.131.0 3.123.131.255
3.123.132.0/24 3.123.132.0 3.123.132.255
3.123.133.0/24 3.123.133.0 3.123.133.255
3.123.134.0/24 3.123.134.0 3.123.134.255
3.123.135.0/24 3.123.135.0 3.123.135.255
3.123.136.0/24 3.123.136.0 3.123.136.255
3.123.137.0/24 3.123.137.0 3.123.137.255
3.123.138.0/24 3.123.138.0 3.123.138.255
3.123.139.0/24 3.123.139.0 3.123.139.255
3.123.140.0/24 3.123.140.0 3.123.140.255
3.123.141.0/24 3.123.141.0 3.123.141.255
3.123.142.0/24 3.123.142.0 3.123.142.255
3.123.143.0/24 3.123.143.0 3.123.143.255
3.123.144.0/24 3.123.144.0 3.123.144.255
3.123.145.0/24 3.123.145.0 3.123.145.255
3.123.146.0/24 3.123.146.0 3.123.146.255
3.123.147.0/24 3.123.147.0 3.123.147.255
3.123.148.0/24 3.123.148.0 3.123.148.255
3.123.149.0/24 3.123.149.0 3.123.149.255
3.123.150.0/24 3.123.150.0 3.123.150.255
3.123.151.0/24 3.123.151.0 3.123.151.255
3.123.152.0/24 3.123.152.0 3.123.152.255
3.123.153.0/24 3.123.153.0 3.123.153.255
3.123.154.0/24 3.123.154.0 3.123.154.255
3.123.155.0/24 3.123.155.0 3.123.155.255
3.123.156.0/24 3.123.156.0 3.123.156.255
3.123.157.0/24 3.123.157.0 3.123.157.255
3.123.158.0/24 3.123.158.0 3.123.158.255
3.123.159.0/24 3.123.159.0 3.123.159.255
3.123.160.0/24 3.123.160.0 3.123.160.255
3.123.161.0/24 3.123.161.0 3.123.161.255
3.123.162.0/24 3.123.162.0 3.123.162.255
3.123.163.0/24 3.123.163.0 3.123.163.255
3.123.164.0/24 3.123.164.0 3.123.164.255
3.123.165.0/24 3.123.165.0 3.123.165.255
3.123.166.0/24 3.123.166.0 3.123.166.255
3.123.167.0/24 3.123.167.0 3.123.167.255
3.123.168.0/24 3.123.168.0 3.123.168.255
3.123.169.0/24 3.123.169.0 3.123.169.255
3.123.170.0/24 3.123.170.0 3.123.170.255
3.123.171.0/24 3.123.171.0 3.123.171.255
3.123.172.0/24 3.123.172.0 3.123.172.255
3.123.173.0/24 3.123.173.0 3.123.173.255
3.123.174.0/24 3.123.174.0 3.123.174.255
3.123.175.0/24 3.123.175.0 3.123.175.255
3.123.176.0/24 3.123.176.0 3.123.176.255
3.123.177.0/24 3.123.177.0 3.123.177.255
3.123.178.0/24 3.123.178.0 3.123.178.255
3.123.179.0/24 3.123.179.0 3.123.179.255
3.123.180.0/24 3.123.180.0 3.123.180.255


3.123.181.0/24 3.123.181.0 3.123.181.255
3.123.182.0/24 3.123.182.0 3.123.182.255
3.123.183.0/24 3.123.183.0 3.123.183.255
3.123.184.0/24 3.123.184.0 3.123.184.255
3.123.185.0/24 3.123.185.0 3.123.185.255
3.123.186.0/24 3.123.186.0 3.123.186.255
3.123.187.0/24 3.123.187.0 3.123.187.255
3.123.188.0/24 3.123.188.0 3.123.188.255
3.123.189.0/24 3.123.189.0 3.123.189.255
3.123.190.0/24 3.123.190.0 3.123.190.255
3.123.191.0/24 3.123.191.0 3.123.191.255
3.123.192.0/24 3.123.192.0 3.123.192.255
3.123.193.0/24 3.123.193.0 3.123.193.255
3.123.194.0/24 3.123.194.0 3.123.194.255
3.123.195.0/24 3.123.195.0 3.123.195.255
3.123.196.0/24 3.123.196.0 3.123.196.255
3.123.197.0/24 3.123.197.0 3.123.197.255
3.123.198.0/24 3.123.198.0 3.123.198.255
3.123.199.0/24 3.123.199.0 3.123.199.255
3.123.200.0/24 3.123.200.0 3.123.200.255
3.123.201.0/24 3.123.201.0 3.123.201.255
3.123.202.0/24 3.123.202.0 3.123.202.255
3.123.203.0/24 3.123.203.0 3.123.203.255
3.123.204.0/24 3.123.204.0 3.123.204.255
3.123.205.0/24 3.123.205.0 3.123.205.255
3.123.206.0/24 3.123.206.0 3.123.206.255
3.123.207.0/24 3.123.207.0 3.123.207.255
3.123.208.0/24 3.123.208.0 3.123.208.255
3.123.209.0/24 3.123.209.0 3.123.209.255
3.123.210.0/24 3.123.210.0 3.123.210.255
3.123.211.0/24 3.123.211.0 3.123.211.255
3.123.212.0/24 3.123.212.0 3.123.212.255
3.123.213.0/24 3.123.213.0 3.123.213.255
3.123.214.0/24 3.123.214.0 3.123.214.255
3.123.215.0/24 3.123.215.0 3.123.215.255
3.123.216.0/24 3.123.216.0 3.123.216.255
3.123.217.0/24 3.123.217.0 3.123.217.255
3.123.218.0/24 3.123.218.0 3.123.218.255
3.123.219.0/24 3.123.219.0 3.123.219.255
3.123.220.0/24 3.123.220.0 3.123.220.255
3.123.221.0/24 3.123.221.0 3.123.221.255
3.123.222.0/24 3.123.222.0 3.123.222.255
3.123.223.0/24 3.123.223.0 3.123.223.255
3.123.224.0/24 3.123.224.0 3.123.224.255
3.123.225.0/24 3.123.225.0 3.123.225.255
3.123.226.0/24 3.123.226.0 3.123.226.255
3.123.227.0/24 3.123.227.0 3.123.227.255
3.123.228.0/24 3.123.228.0 3.123.228.255
3.123.229.0/24 3.123.229.0 3.123.229.255
3.123.230.0/24 3.123.230.0 3.123.230.255
3.123.231.0/24 3.123.231.0 3.123.231.255
3.123.232.0/24 3.123.232.0 3.123.232.255
3.123.233.0/24 3.123.233.0 3.123.233.255
3.123.234.0/24 3.123.234.0 3.123.234.255
3.123.235.0/24 3.123.235.0 3.123.235.255
3.123.236.0/24 3.123.236.0 3.123.236.255
3.123.237.0/24 3.123.237.0 3.123.237.255
3.123.238.0/24 3.123.238.0 3.123.238.255
3.123.239.0/24 3.123.239.0 3.123.239.255
3.123.240.0/24 3.123.240.0 3.123.240.255
3.123.241.0/24 3.123.241.0 3.123.241.255
3.123.242.0/24 3.123.242.0 3.123.242.255
3.123.243.0/24 3.123.243.0 3.123.243.255
3.123.244.0/24 3.123.244.0 3.123.244.255
3.123.245.0/24 3.123.245.0 3.123.245.255
3.123.246.0/24 3.123.246.0 3.123.246.255
3.123.247.0/24 3.123.247.0 3.123.247.255
3.123.248.0/24 3.123.248.0 3.123.248.255
3.123.249.0/24 3.123.249.0 3.123.249.255
3.123.250.0/24 3.123.250.0 3.123.250.255
3.123.251.0/24 3.123.251.0 3.123.251.255
3.123.252.0/24 3.123.252.0 3.123.252.255
3.123.253.0/24 3.123.253.0 3.123.253.255
3.123.254.0/24 3.123.254.0 3.123.254.255
3.123.255.0/24 3.123.255.0 3.123.255.255


How we got IPv4 subnet masks?

An IPv4 subnet mask consists of 32 bits; it is a sequence of ones (1) followed by a block of zeros (0). The ones indicate bits in the address used for the network prefix and the trailing block of zeros designates that part as being the host identifier.