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
2.203.1.0/24 2.203.1.0 2.203.1.255
2.203.2.0/24 2.203.2.0 2.203.2.255
2.203.3.0/24 2.203.3.0 2.203.3.255
2.203.4.0/24 2.203.4.0 2.203.4.255
2.203.5.0/24 2.203.5.0 2.203.5.255
2.203.6.0/24 2.203.6.0 2.203.6.255
2.203.7.0/24 2.203.7.0 2.203.7.255
2.203.8.0/24 2.203.8.0 2.203.8.255
2.203.9.0/24 2.203.9.0 2.203.9.255
2.203.10.0/24 2.203.10.0 2.203.10.255
2.203.11.0/24 2.203.11.0 2.203.11.255
2.203.12.0/24 2.203.12.0 2.203.12.255
2.203.13.0/24 2.203.13.0 2.203.13.255
2.203.14.0/24 2.203.14.0 2.203.14.255
2.203.15.0/24 2.203.15.0 2.203.15.255
2.203.16.0/24 2.203.16.0 2.203.16.255
2.203.17.0/24 2.203.17.0 2.203.17.255
2.203.18.0/24 2.203.18.0 2.203.18.255
2.203.19.0/24 2.203.19.0 2.203.19.255
2.203.20.0/24 2.203.20.0 2.203.20.255
2.203.21.0/24 2.203.21.0 2.203.21.255
2.203.22.0/24 2.203.22.0 2.203.22.255
2.203.23.0/24 2.203.23.0 2.203.23.255
2.203.24.0/24 2.203.24.0 2.203.24.255
2.203.25.0/24 2.203.25.0 2.203.25.255
2.203.26.0/24 2.203.26.0 2.203.26.255
2.203.27.0/24 2.203.27.0 2.203.27.255
2.203.28.0/24 2.203.28.0 2.203.28.255
2.203.29.0/24 2.203.29.0 2.203.29.255
2.203.30.0/24 2.203.30.0 2.203.30.255
2.203.31.0/24 2.203.31.0 2.203.31.255
2.203.32.0/24 2.203.32.0 2.203.32.255
2.203.33.0/24 2.203.33.0 2.203.33.255
2.203.34.0/24 2.203.34.0 2.203.34.255
2.203.35.0/24 2.203.35.0 2.203.35.255
2.203.36.0/24 2.203.36.0 2.203.36.255
2.203.37.0/24 2.203.37.0 2.203.37.255
2.203.38.0/24 2.203.38.0 2.203.38.255
2.203.39.0/24 2.203.39.0 2.203.39.255
2.203.40.0/24 2.203.40.0 2.203.40.255
2.203.41.0/24 2.203.41.0 2.203.41.255
2.203.42.0/24 2.203.42.0 2.203.42.255
2.203.43.0/24 2.203.43.0 2.203.43.255
2.203.44.0/24 2.203.44.0 2.203.44.255
2.203.45.0/24 2.203.45.0 2.203.45.255
2.203.46.0/24 2.203.46.0 2.203.46.255
2.203.47.0/24 2.203.47.0 2.203.47.255
2.203.48.0/24 2.203.48.0 2.203.48.255
2.203.49.0/24 2.203.49.0 2.203.49.255
2.203.50.0/24 2.203.50.0 2.203.50.255
2.203.51.0/24 2.203.51.0 2.203.51.255
2.203.52.0/24 2.203.52.0 2.203.52.255
2.203.53.0/24 2.203.53.0 2.203.53.255
2.203.54.0/24 2.203.54.0 2.203.54.255
2.203.55.0/24 2.203.55.0 2.203.55.255
2.203.56.0/24 2.203.56.0 2.203.56.255
2.203.57.0/24 2.203.57.0 2.203.57.255
2.203.58.0/24 2.203.58.0 2.203.58.255
2.203.59.0/24 2.203.59.0 2.203.59.255
2.203.60.0/24 2.203.60.0 2.203.60.255


2.203.61.0/24 2.203.61.0 2.203.61.255
2.203.62.0/24 2.203.62.0 2.203.62.255
2.203.63.0/24 2.203.63.0 2.203.63.255
2.203.64.0/24 2.203.64.0 2.203.64.255
2.203.65.0/24 2.203.65.0 2.203.65.255
2.203.66.0/24 2.203.66.0 2.203.66.255
2.203.67.0/24 2.203.67.0 2.203.67.255
2.203.68.0/24 2.203.68.0 2.203.68.255
2.203.69.0/24 2.203.69.0 2.203.69.255
2.203.70.0/24 2.203.70.0 2.203.70.255
2.203.71.0/24 2.203.71.0 2.203.71.255
2.203.72.0/24 2.203.72.0 2.203.72.255
2.203.73.0/24 2.203.73.0 2.203.73.255
2.203.74.0/24 2.203.74.0 2.203.74.255
2.203.75.0/24 2.203.75.0 2.203.75.255
2.203.76.0/24 2.203.76.0 2.203.76.255
2.203.77.0/24 2.203.77.0 2.203.77.255
2.203.78.0/24 2.203.78.0 2.203.78.255
2.203.79.0/24 2.203.79.0 2.203.79.255
2.203.80.0/24 2.203.80.0 2.203.80.255
2.203.81.0/24 2.203.81.0 2.203.81.255
2.203.82.0/24 2.203.82.0 2.203.82.255
2.203.83.0/24 2.203.83.0 2.203.83.255
2.203.84.0/24 2.203.84.0 2.203.84.255
2.203.85.0/24 2.203.85.0 2.203.85.255
2.203.86.0/24 2.203.86.0 2.203.86.255
2.203.87.0/24 2.203.87.0 2.203.87.255
2.203.88.0/24 2.203.88.0 2.203.88.255
2.203.89.0/24 2.203.89.0 2.203.89.255
2.203.90.0/24 2.203.90.0 2.203.90.255
2.203.91.0/24 2.203.91.0 2.203.91.255
2.203.92.0/24 2.203.92.0 2.203.92.255
2.203.93.0/24 2.203.93.0 2.203.93.255
2.203.94.0/24 2.203.94.0 2.203.94.255
2.203.95.0/24 2.203.95.0 2.203.95.255
2.203.96.0/24 2.203.96.0 2.203.96.255
2.203.97.0/24 2.203.97.0 2.203.97.255
2.203.98.0/24 2.203.98.0 2.203.98.255
2.203.99.0/24 2.203.99.0 2.203.99.255
2.203.100.0/24 2.203.100.0 2.203.100.255
2.203.101.0/24 2.203.101.0 2.203.101.255
2.203.102.0/24 2.203.102.0 2.203.102.255
2.203.103.0/24 2.203.103.0 2.203.103.255
2.203.104.0/24 2.203.104.0 2.203.104.255
2.203.105.0/24 2.203.105.0 2.203.105.255
2.203.106.0/24 2.203.106.0 2.203.106.255
2.203.107.0/24 2.203.107.0 2.203.107.255
2.203.108.0/24 2.203.108.0 2.203.108.255
2.203.109.0/24 2.203.109.0 2.203.109.255
2.203.110.0/24 2.203.110.0 2.203.110.255
2.203.111.0/24 2.203.111.0 2.203.111.255
2.203.112.0/24 2.203.112.0 2.203.112.255
2.203.113.0/24 2.203.113.0 2.203.113.255
2.203.114.0/24 2.203.114.0 2.203.114.255
2.203.115.0/24 2.203.115.0 2.203.115.255
2.203.116.0/24 2.203.116.0 2.203.116.255
2.203.117.0/24 2.203.117.0 2.203.117.255
2.203.118.0/24 2.203.118.0 2.203.118.255
2.203.119.0/24 2.203.119.0 2.203.119.255
2.203.120.0/24 2.203.120.0 2.203.120.255


2.203.121.0/24 2.203.121.0 2.203.121.255
2.203.122.0/24 2.203.122.0 2.203.122.255
2.203.123.0/24 2.203.123.0 2.203.123.255
2.203.124.0/24 2.203.124.0 2.203.124.255
2.203.125.0/24 2.203.125.0 2.203.125.255
2.203.126.0/24 2.203.126.0 2.203.126.255
2.203.127.0/24 2.203.127.0 2.203.127.255
2.203.128.0/24 2.203.128.0 2.203.128.255
2.203.129.0/24 2.203.129.0 2.203.129.255
2.203.130.0/24 2.203.130.0 2.203.130.255
2.203.131.0/24 2.203.131.0 2.203.131.255
2.203.132.0/24 2.203.132.0 2.203.132.255
2.203.133.0/24 2.203.133.0 2.203.133.255
2.203.134.0/24 2.203.134.0 2.203.134.255
2.203.135.0/24 2.203.135.0 2.203.135.255
2.203.136.0/24 2.203.136.0 2.203.136.255
2.203.137.0/24 2.203.137.0 2.203.137.255
2.203.138.0/24 2.203.138.0 2.203.138.255
2.203.139.0/24 2.203.139.0 2.203.139.255
2.203.140.0/24 2.203.140.0 2.203.140.255
2.203.141.0/24 2.203.141.0 2.203.141.255
2.203.142.0/24 2.203.142.0 2.203.142.255
2.203.143.0/24 2.203.143.0 2.203.143.255
2.203.144.0/24 2.203.144.0 2.203.144.255
2.203.145.0/24 2.203.145.0 2.203.145.255
2.203.146.0/24 2.203.146.0 2.203.146.255
2.203.147.0/24 2.203.147.0 2.203.147.255
2.203.148.0/24 2.203.148.0 2.203.148.255
2.203.149.0/24 2.203.149.0 2.203.149.255
2.203.150.0/24 2.203.150.0 2.203.150.255
2.203.151.0/24 2.203.151.0 2.203.151.255
2.203.152.0/24 2.203.152.0 2.203.152.255
2.203.153.0/24 2.203.153.0 2.203.153.255
2.203.154.0/24 2.203.154.0 2.203.154.255
2.203.155.0/24 2.203.155.0 2.203.155.255
2.203.156.0/24 2.203.156.0 2.203.156.255
2.203.157.0/24 2.203.157.0 2.203.157.255
2.203.158.0/24 2.203.158.0 2.203.158.255
2.203.159.0/24 2.203.159.0 2.203.159.255
2.203.160.0/24 2.203.160.0 2.203.160.255
2.203.161.0/24 2.203.161.0 2.203.161.255
2.203.162.0/24 2.203.162.0 2.203.162.255
2.203.163.0/24 2.203.163.0 2.203.163.255
2.203.164.0/24 2.203.164.0 2.203.164.255
2.203.165.0/24 2.203.165.0 2.203.165.255
2.203.166.0/24 2.203.166.0 2.203.166.255
2.203.167.0/24 2.203.167.0 2.203.167.255
2.203.168.0/24 2.203.168.0 2.203.168.255
2.203.169.0/24 2.203.169.0 2.203.169.255
2.203.170.0/24 2.203.170.0 2.203.170.255
2.203.171.0/24 2.203.171.0 2.203.171.255
2.203.172.0/24 2.203.172.0 2.203.172.255
2.203.173.0/24 2.203.173.0 2.203.173.255
2.203.174.0/24 2.203.174.0 2.203.174.255
2.203.175.0/24 2.203.175.0 2.203.175.255
2.203.176.0/24 2.203.176.0 2.203.176.255
2.203.177.0/24 2.203.177.0 2.203.177.255
2.203.178.0/24 2.203.178.0 2.203.178.255
2.203.179.0/24 2.203.179.0 2.203.179.255
2.203.180.0/24 2.203.180.0 2.203.180.255


2.203.181.0/24 2.203.181.0 2.203.181.255
2.203.182.0/24 2.203.182.0 2.203.182.255
2.203.183.0/24 2.203.183.0 2.203.183.255
2.203.184.0/24 2.203.184.0 2.203.184.255
2.203.185.0/24 2.203.185.0 2.203.185.255
2.203.186.0/24 2.203.186.0 2.203.186.255
2.203.187.0/24 2.203.187.0 2.203.187.255
2.203.188.0/24 2.203.188.0 2.203.188.255
2.203.189.0/24 2.203.189.0 2.203.189.255
2.203.190.0/24 2.203.190.0 2.203.190.255
2.203.191.0/24 2.203.191.0 2.203.191.255
2.203.192.0/24 2.203.192.0 2.203.192.255
2.203.193.0/24 2.203.193.0 2.203.193.255
2.203.194.0/24 2.203.194.0 2.203.194.255
2.203.195.0/24 2.203.195.0 2.203.195.255
2.203.196.0/24 2.203.196.0 2.203.196.255
2.203.197.0/24 2.203.197.0 2.203.197.255
2.203.198.0/24 2.203.198.0 2.203.198.255
2.203.199.0/24 2.203.199.0 2.203.199.255
2.203.200.0/24 2.203.200.0 2.203.200.255
2.203.201.0/24 2.203.201.0 2.203.201.255
2.203.202.0/24 2.203.202.0 2.203.202.255
2.203.203.0/24 2.203.203.0 2.203.203.255
2.203.204.0/24 2.203.204.0 2.203.204.255
2.203.205.0/24 2.203.205.0 2.203.205.255
2.203.206.0/24 2.203.206.0 2.203.206.255
2.203.207.0/24 2.203.207.0 2.203.207.255
2.203.208.0/24 2.203.208.0 2.203.208.255
2.203.209.0/24 2.203.209.0 2.203.209.255
2.203.210.0/24 2.203.210.0 2.203.210.255
2.203.211.0/24 2.203.211.0 2.203.211.255
2.203.212.0/24 2.203.212.0 2.203.212.255
2.203.213.0/24 2.203.213.0 2.203.213.255
2.203.214.0/24 2.203.214.0 2.203.214.255
2.203.215.0/24 2.203.215.0 2.203.215.255
2.203.216.0/24 2.203.216.0 2.203.216.255
2.203.217.0/24 2.203.217.0 2.203.217.255
2.203.218.0/24 2.203.218.0 2.203.218.255
2.203.219.0/24 2.203.219.0 2.203.219.255
2.203.220.0/24 2.203.220.0 2.203.220.255
2.203.221.0/24 2.203.221.0 2.203.221.255
2.203.222.0/24 2.203.222.0 2.203.222.255
2.203.223.0/24 2.203.223.0 2.203.223.255
2.203.224.0/24 2.203.224.0 2.203.224.255
2.203.225.0/24 2.203.225.0 2.203.225.255
2.203.226.0/24 2.203.226.0 2.203.226.255
2.203.227.0/24 2.203.227.0 2.203.227.255
2.203.228.0/24 2.203.228.0 2.203.228.255
2.203.229.0/24 2.203.229.0 2.203.229.255
2.203.230.0/24 2.203.230.0 2.203.230.255
2.203.231.0/24 2.203.231.0 2.203.231.255
2.203.232.0/24 2.203.232.0 2.203.232.255
2.203.233.0/24 2.203.233.0 2.203.233.255
2.203.234.0/24 2.203.234.0 2.203.234.255
2.203.235.0/24 2.203.235.0 2.203.235.255
2.203.236.0/24 2.203.236.0 2.203.236.255
2.203.237.0/24 2.203.237.0 2.203.237.255
2.203.238.0/24 2.203.238.0 2.203.238.255
2.203.239.0/24 2.203.239.0 2.203.239.255
2.203.240.0/24 2.203.240.0 2.203.240.255
2.203.241.0/24 2.203.241.0 2.203.241.255
2.203.242.0/24 2.203.242.0 2.203.242.255
2.203.243.0/24 2.203.243.0 2.203.243.255
2.203.244.0/24 2.203.244.0 2.203.244.255
2.203.245.0/24 2.203.245.0 2.203.245.255
2.203.246.0/24 2.203.246.0 2.203.246.255
2.203.247.0/24 2.203.247.0 2.203.247.255
2.203.248.0/24 2.203.248.0 2.203.248.255
2.203.249.0/24 2.203.249.0 2.203.249.255
2.203.250.0/24 2.203.250.0 2.203.250.255
2.203.251.0/24 2.203.251.0 2.203.251.255
2.203.252.0/24 2.203.252.0 2.203.252.255
2.203.253.0/24 2.203.253.0 2.203.253.255
2.203.254.0/24 2.203.254.0 2.203.254.255
2.203.255.0/24 2.203.255.0 2.203.255.255


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.