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
3.128.1.0/24 3.128.1.0 3.128.1.255
3.128.2.0/24 3.128.2.0 3.128.2.255
3.128.3.0/24 3.128.3.0 3.128.3.255
3.128.4.0/24 3.128.4.0 3.128.4.255
3.128.5.0/24 3.128.5.0 3.128.5.255
3.128.6.0/24 3.128.6.0 3.128.6.255
3.128.7.0/24 3.128.7.0 3.128.7.255
3.128.8.0/24 3.128.8.0 3.128.8.255
3.128.9.0/24 3.128.9.0 3.128.9.255
3.128.10.0/24 3.128.10.0 3.128.10.255
3.128.11.0/24 3.128.11.0 3.128.11.255
3.128.12.0/24 3.128.12.0 3.128.12.255
3.128.13.0/24 3.128.13.0 3.128.13.255
3.128.14.0/24 3.128.14.0 3.128.14.255
3.128.15.0/24 3.128.15.0 3.128.15.255
3.128.16.0/24 3.128.16.0 3.128.16.255
3.128.17.0/24 3.128.17.0 3.128.17.255
3.128.18.0/24 3.128.18.0 3.128.18.255
3.128.19.0/24 3.128.19.0 3.128.19.255
3.128.20.0/24 3.128.20.0 3.128.20.255
3.128.21.0/24 3.128.21.0 3.128.21.255
3.128.22.0/24 3.128.22.0 3.128.22.255
3.128.23.0/24 3.128.23.0 3.128.23.255
3.128.24.0/24 3.128.24.0 3.128.24.255
3.128.25.0/24 3.128.25.0 3.128.25.255
3.128.26.0/24 3.128.26.0 3.128.26.255
3.128.27.0/24 3.128.27.0 3.128.27.255
3.128.28.0/24 3.128.28.0 3.128.28.255
3.128.29.0/24 3.128.29.0 3.128.29.255
3.128.30.0/24 3.128.30.0 3.128.30.255
3.128.31.0/24 3.128.31.0 3.128.31.255
3.128.32.0/24 3.128.32.0 3.128.32.255
3.128.33.0/24 3.128.33.0 3.128.33.255
3.128.34.0/24 3.128.34.0 3.128.34.255
3.128.35.0/24 3.128.35.0 3.128.35.255
3.128.36.0/24 3.128.36.0 3.128.36.255
3.128.37.0/24 3.128.37.0 3.128.37.255
3.128.38.0/24 3.128.38.0 3.128.38.255
3.128.39.0/24 3.128.39.0 3.128.39.255
3.128.40.0/24 3.128.40.0 3.128.40.255
3.128.41.0/24 3.128.41.0 3.128.41.255
3.128.42.0/24 3.128.42.0 3.128.42.255
3.128.43.0/24 3.128.43.0 3.128.43.255
3.128.44.0/24 3.128.44.0 3.128.44.255
3.128.45.0/24 3.128.45.0 3.128.45.255
3.128.46.0/24 3.128.46.0 3.128.46.255
3.128.47.0/24 3.128.47.0 3.128.47.255
3.128.48.0/24 3.128.48.0 3.128.48.255
3.128.49.0/24 3.128.49.0 3.128.49.255
3.128.50.0/24 3.128.50.0 3.128.50.255
3.128.51.0/24 3.128.51.0 3.128.51.255
3.128.52.0/24 3.128.52.0 3.128.52.255
3.128.53.0/24 3.128.53.0 3.128.53.255
3.128.54.0/24 3.128.54.0 3.128.54.255
3.128.55.0/24 3.128.55.0 3.128.55.255
3.128.56.0/24 3.128.56.0 3.128.56.255
3.128.57.0/24 3.128.57.0 3.128.57.255
3.128.58.0/24 3.128.58.0 3.128.58.255
3.128.59.0/24 3.128.59.0 3.128.59.255
3.128.60.0/24 3.128.60.0 3.128.60.255


3.128.61.0/24 3.128.61.0 3.128.61.255
3.128.62.0/24 3.128.62.0 3.128.62.255
3.128.63.0/24 3.128.63.0 3.128.63.255
3.128.64.0/24 3.128.64.0 3.128.64.255
3.128.65.0/24 3.128.65.0 3.128.65.255
3.128.66.0/24 3.128.66.0 3.128.66.255
3.128.67.0/24 3.128.67.0 3.128.67.255
3.128.68.0/24 3.128.68.0 3.128.68.255
3.128.69.0/24 3.128.69.0 3.128.69.255
3.128.70.0/24 3.128.70.0 3.128.70.255
3.128.71.0/24 3.128.71.0 3.128.71.255
3.128.72.0/24 3.128.72.0 3.128.72.255
3.128.73.0/24 3.128.73.0 3.128.73.255
3.128.74.0/24 3.128.74.0 3.128.74.255
3.128.75.0/24 3.128.75.0 3.128.75.255
3.128.76.0/24 3.128.76.0 3.128.76.255
3.128.77.0/24 3.128.77.0 3.128.77.255
3.128.78.0/24 3.128.78.0 3.128.78.255
3.128.79.0/24 3.128.79.0 3.128.79.255
3.128.80.0/24 3.128.80.0 3.128.80.255
3.128.81.0/24 3.128.81.0 3.128.81.255
3.128.82.0/24 3.128.82.0 3.128.82.255
3.128.83.0/24 3.128.83.0 3.128.83.255
3.128.84.0/24 3.128.84.0 3.128.84.255
3.128.85.0/24 3.128.85.0 3.128.85.255
3.128.86.0/24 3.128.86.0 3.128.86.255
3.128.87.0/24 3.128.87.0 3.128.87.255
3.128.88.0/24 3.128.88.0 3.128.88.255
3.128.89.0/24 3.128.89.0 3.128.89.255
3.128.90.0/24 3.128.90.0 3.128.90.255
3.128.91.0/24 3.128.91.0 3.128.91.255
3.128.92.0/24 3.128.92.0 3.128.92.255
3.128.93.0/24 3.128.93.0 3.128.93.255
3.128.94.0/24 3.128.94.0 3.128.94.255
3.128.95.0/24 3.128.95.0 3.128.95.255
3.128.96.0/24 3.128.96.0 3.128.96.255
3.128.97.0/24 3.128.97.0 3.128.97.255
3.128.98.0/24 3.128.98.0 3.128.98.255
3.128.99.0/24 3.128.99.0 3.128.99.255
3.128.100.0/24 3.128.100.0 3.128.100.255
3.128.101.0/24 3.128.101.0 3.128.101.255
3.128.102.0/24 3.128.102.0 3.128.102.255
3.128.103.0/24 3.128.103.0 3.128.103.255
3.128.104.0/24 3.128.104.0 3.128.104.255
3.128.105.0/24 3.128.105.0 3.128.105.255
3.128.106.0/24 3.128.106.0 3.128.106.255
3.128.107.0/24 3.128.107.0 3.128.107.255
3.128.108.0/24 3.128.108.0 3.128.108.255
3.128.109.0/24 3.128.109.0 3.128.109.255
3.128.110.0/24 3.128.110.0 3.128.110.255
3.128.111.0/24 3.128.111.0 3.128.111.255
3.128.112.0/24 3.128.112.0 3.128.112.255
3.128.113.0/24 3.128.113.0 3.128.113.255
3.128.114.0/24 3.128.114.0 3.128.114.255
3.128.115.0/24 3.128.115.0 3.128.115.255
3.128.116.0/24 3.128.116.0 3.128.116.255
3.128.117.0/24 3.128.117.0 3.128.117.255
3.128.118.0/24 3.128.118.0 3.128.118.255
3.128.119.0/24 3.128.119.0 3.128.119.255
3.128.120.0/24 3.128.120.0 3.128.120.255


3.128.121.0/24 3.128.121.0 3.128.121.255
3.128.122.0/24 3.128.122.0 3.128.122.255
3.128.123.0/24 3.128.123.0 3.128.123.255
3.128.124.0/24 3.128.124.0 3.128.124.255
3.128.125.0/24 3.128.125.0 3.128.125.255
3.128.126.0/24 3.128.126.0 3.128.126.255
3.128.127.0/24 3.128.127.0 3.128.127.255
3.128.128.0/24 3.128.128.0 3.128.128.255
3.128.129.0/24 3.128.129.0 3.128.129.255
3.128.130.0/24 3.128.130.0 3.128.130.255
3.128.131.0/24 3.128.131.0 3.128.131.255
3.128.132.0/24 3.128.132.0 3.128.132.255
3.128.133.0/24 3.128.133.0 3.128.133.255
3.128.134.0/24 3.128.134.0 3.128.134.255
3.128.135.0/24 3.128.135.0 3.128.135.255
3.128.136.0/24 3.128.136.0 3.128.136.255
3.128.137.0/24 3.128.137.0 3.128.137.255
3.128.138.0/24 3.128.138.0 3.128.138.255
3.128.139.0/24 3.128.139.0 3.128.139.255
3.128.140.0/24 3.128.140.0 3.128.140.255
3.128.141.0/24 3.128.141.0 3.128.141.255
3.128.142.0/24 3.128.142.0 3.128.142.255
3.128.143.0/24 3.128.143.0 3.128.143.255
3.128.144.0/24 3.128.144.0 3.128.144.255
3.128.145.0/24 3.128.145.0 3.128.145.255
3.128.146.0/24 3.128.146.0 3.128.146.255
3.128.147.0/24 3.128.147.0 3.128.147.255
3.128.148.0/24 3.128.148.0 3.128.148.255
3.128.149.0/24 3.128.149.0 3.128.149.255
3.128.150.0/24 3.128.150.0 3.128.150.255
3.128.151.0/24 3.128.151.0 3.128.151.255
3.128.152.0/24 3.128.152.0 3.128.152.255
3.128.153.0/24 3.128.153.0 3.128.153.255
3.128.154.0/24 3.128.154.0 3.128.154.255
3.128.155.0/24 3.128.155.0 3.128.155.255
3.128.156.0/24 3.128.156.0 3.128.156.255
3.128.157.0/24 3.128.157.0 3.128.157.255
3.128.158.0/24 3.128.158.0 3.128.158.255
3.128.159.0/24 3.128.159.0 3.128.159.255
3.128.160.0/24 3.128.160.0 3.128.160.255
3.128.161.0/24 3.128.161.0 3.128.161.255
3.128.162.0/24 3.128.162.0 3.128.162.255
3.128.163.0/24 3.128.163.0 3.128.163.255
3.128.164.0/24 3.128.164.0 3.128.164.255
3.128.165.0/24 3.128.165.0 3.128.165.255
3.128.166.0/24 3.128.166.0 3.128.166.255
3.128.167.0/24 3.128.167.0 3.128.167.255
3.128.168.0/24 3.128.168.0 3.128.168.255
3.128.169.0/24 3.128.169.0 3.128.169.255
3.128.170.0/24 3.128.170.0 3.128.170.255
3.128.171.0/24 3.128.171.0 3.128.171.255
3.128.172.0/24 3.128.172.0 3.128.172.255
3.128.173.0/24 3.128.173.0 3.128.173.255
3.128.174.0/24 3.128.174.0 3.128.174.255
3.128.175.0/24 3.128.175.0 3.128.175.255
3.128.176.0/24 3.128.176.0 3.128.176.255
3.128.177.0/24 3.128.177.0 3.128.177.255
3.128.178.0/24 3.128.178.0 3.128.178.255
3.128.179.0/24 3.128.179.0 3.128.179.255
3.128.180.0/24 3.128.180.0 3.128.180.255


3.128.181.0/24 3.128.181.0 3.128.181.255
3.128.182.0/24 3.128.182.0 3.128.182.255
3.128.183.0/24 3.128.183.0 3.128.183.255
3.128.184.0/24 3.128.184.0 3.128.184.255
3.128.185.0/24 3.128.185.0 3.128.185.255
3.128.186.0/24 3.128.186.0 3.128.186.255
3.128.187.0/24 3.128.187.0 3.128.187.255
3.128.188.0/24 3.128.188.0 3.128.188.255
3.128.189.0/24 3.128.189.0 3.128.189.255
3.128.190.0/24 3.128.190.0 3.128.190.255
3.128.191.0/24 3.128.191.0 3.128.191.255
3.128.192.0/24 3.128.192.0 3.128.192.255
3.128.193.0/24 3.128.193.0 3.128.193.255
3.128.194.0/24 3.128.194.0 3.128.194.255
3.128.195.0/24 3.128.195.0 3.128.195.255
3.128.196.0/24 3.128.196.0 3.128.196.255
3.128.197.0/24 3.128.197.0 3.128.197.255
3.128.198.0/24 3.128.198.0 3.128.198.255
3.128.199.0/24 3.128.199.0 3.128.199.255
3.128.200.0/24 3.128.200.0 3.128.200.255
3.128.201.0/24 3.128.201.0 3.128.201.255
3.128.202.0/24 3.128.202.0 3.128.202.255
3.128.203.0/24 3.128.203.0 3.128.203.255
3.128.204.0/24 3.128.204.0 3.128.204.255
3.128.205.0/24 3.128.205.0 3.128.205.255
3.128.206.0/24 3.128.206.0 3.128.206.255
3.128.207.0/24 3.128.207.0 3.128.207.255
3.128.208.0/24 3.128.208.0 3.128.208.255
3.128.209.0/24 3.128.209.0 3.128.209.255
3.128.210.0/24 3.128.210.0 3.128.210.255
3.128.211.0/24 3.128.211.0 3.128.211.255
3.128.212.0/24 3.128.212.0 3.128.212.255
3.128.213.0/24 3.128.213.0 3.128.213.255
3.128.214.0/24 3.128.214.0 3.128.214.255
3.128.215.0/24 3.128.215.0 3.128.215.255
3.128.216.0/24 3.128.216.0 3.128.216.255
3.128.217.0/24 3.128.217.0 3.128.217.255
3.128.218.0/24 3.128.218.0 3.128.218.255
3.128.219.0/24 3.128.219.0 3.128.219.255
3.128.220.0/24 3.128.220.0 3.128.220.255
3.128.221.0/24 3.128.221.0 3.128.221.255
3.128.222.0/24 3.128.222.0 3.128.222.255
3.128.223.0/24 3.128.223.0 3.128.223.255
3.128.224.0/24 3.128.224.0 3.128.224.255
3.128.225.0/24 3.128.225.0 3.128.225.255
3.128.226.0/24 3.128.226.0 3.128.226.255
3.128.227.0/24 3.128.227.0 3.128.227.255
3.128.228.0/24 3.128.228.0 3.128.228.255
3.128.229.0/24 3.128.229.0 3.128.229.255
3.128.230.0/24 3.128.230.0 3.128.230.255
3.128.231.0/24 3.128.231.0 3.128.231.255
3.128.232.0/24 3.128.232.0 3.128.232.255
3.128.233.0/24 3.128.233.0 3.128.233.255
3.128.234.0/24 3.128.234.0 3.128.234.255
3.128.235.0/24 3.128.235.0 3.128.235.255
3.128.236.0/24 3.128.236.0 3.128.236.255
3.128.237.0/24 3.128.237.0 3.128.237.255
3.128.238.0/24 3.128.238.0 3.128.238.255
3.128.239.0/24 3.128.239.0 3.128.239.255
3.128.240.0/24 3.128.240.0 3.128.240.255
3.128.241.0/24 3.128.241.0 3.128.241.255
3.128.242.0/24 3.128.242.0 3.128.242.255
3.128.243.0/24 3.128.243.0 3.128.243.255
3.128.244.0/24 3.128.244.0 3.128.244.255
3.128.245.0/24 3.128.245.0 3.128.245.255
3.128.246.0/24 3.128.246.0 3.128.246.255
3.128.247.0/24 3.128.247.0 3.128.247.255
3.128.248.0/24 3.128.248.0 3.128.248.255
3.128.249.0/24 3.128.249.0 3.128.249.255
3.128.250.0/24 3.128.250.0 3.128.250.255
3.128.251.0/24 3.128.251.0 3.128.251.255
3.128.252.0/24 3.128.252.0 3.128.252.255
3.128.253.0/24 3.128.253.0 3.128.253.255
3.128.254.0/24 3.128.254.0 3.128.254.255
3.128.255.0/24 3.128.255.0 3.128.255.255


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.