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.

IPv4 AddressIPv6 Address
21.15.143.1 0:0:0:0:0:ffff:150f:8f01
21.15.143.2 0:0:0:0:0:ffff:150f:8f02
21.15.143.3 0:0:0:0:0:ffff:150f:8f03
21.15.143.4 0:0:0:0:0:ffff:150f:8f04
21.15.143.5 0:0:0:0:0:ffff:150f:8f05
21.15.143.6 0:0:0:0:0:ffff:150f:8f06
21.15.143.7 0:0:0:0:0:ffff:150f:8f07
21.15.143.8 0:0:0:0:0:ffff:150f:8f08
21.15.143.9 0:0:0:0:0:ffff:150f:8f09
21.15.143.10 0:0:0:0:0:ffff:150f:8f0a
21.15.143.11 0:0:0:0:0:ffff:150f:8f0b
21.15.143.12 0:0:0:0:0:ffff:150f:8f0c
21.15.143.13 0:0:0:0:0:ffff:150f:8f0d
21.15.143.14 0:0:0:0:0:ffff:150f:8f0e
21.15.143.15 0:0:0:0:0:ffff:150f:8f0f
21.15.143.16 0:0:0:0:0:ffff:150f:8f10
21.15.143.17 0:0:0:0:0:ffff:150f:8f11
21.15.143.18 0:0:0:0:0:ffff:150f:8f12
21.15.143.19 0:0:0:0:0:ffff:150f:8f13
21.15.143.20 0:0:0:0:0:ffff:150f:8f14
21.15.143.21 0:0:0:0:0:ffff:150f:8f15
21.15.143.22 0:0:0:0:0:ffff:150f:8f16
21.15.143.23 0:0:0:0:0:ffff:150f:8f17
21.15.143.24 0:0:0:0:0:ffff:150f:8f18
21.15.143.25 0:0:0:0:0:ffff:150f:8f19
21.15.143.26 0:0:0:0:0:ffff:150f:8f1a
21.15.143.27 0:0:0:0:0:ffff:150f:8f1b
21.15.143.28 0:0:0:0:0:ffff:150f:8f1c
21.15.143.29 0:0:0:0:0:ffff:150f:8f1d
21.15.143.30 0:0:0:0:0:ffff:150f:8f1e
21.15.143.31 0:0:0:0:0:ffff:150f:8f1f
21.15.143.32 0:0:0:0:0:ffff:150f:8f20
21.15.143.33 0:0:0:0:0:ffff:150f:8f21
21.15.143.34 0:0:0:0:0:ffff:150f:8f22
21.15.143.35 0:0:0:0:0:ffff:150f:8f23
21.15.143.36 0:0:0:0:0:ffff:150f:8f24
21.15.143.37 0:0:0:0:0:ffff:150f:8f25
21.15.143.38 0:0:0:0:0:ffff:150f:8f26
21.15.143.39 0:0:0:0:0:ffff:150f:8f27
21.15.143.40 0:0:0:0:0:ffff:150f:8f28
21.15.143.41 0:0:0:0:0:ffff:150f:8f29
21.15.143.42 0:0:0:0:0:ffff:150f:8f2a
21.15.143.43 0:0:0:0:0:ffff:150f:8f2b
21.15.143.44 0:0:0:0:0:ffff:150f:8f2c
21.15.143.45 0:0:0:0:0:ffff:150f:8f2d
21.15.143.46 0:0:0:0:0:ffff:150f:8f2e
21.15.143.47 0:0:0:0:0:ffff:150f:8f2f
21.15.143.48 0:0:0:0:0:ffff:150f:8f30
21.15.143.49 0:0:0:0:0:ffff:150f:8f31
21.15.143.50 0:0:0:0:0:ffff:150f:8f32
21.15.143.51 0:0:0:0:0:ffff:150f:8f33
21.15.143.52 0:0:0:0:0:ffff:150f:8f34
21.15.143.53 0:0:0:0:0:ffff:150f:8f35
21.15.143.54 0:0:0:0:0:ffff:150f:8f36
21.15.143.55 0:0:0:0:0:ffff:150f:8f37
21.15.143.56 0:0:0:0:0:ffff:150f:8f38
21.15.143.57 0:0:0:0:0:ffff:150f:8f39
21.15.143.58 0:0:0:0:0:ffff:150f:8f3a
21.15.143.59 0:0:0:0:0:ffff:150f:8f3b
21.15.143.60 0:0:0:0:0:ffff:150f:8f3c


21.15.143.61 0:0:0:0:0:ffff:150f:8f3d
21.15.143.62 0:0:0:0:0:ffff:150f:8f3e
21.15.143.63 0:0:0:0:0:ffff:150f:8f3f
21.15.143.64 0:0:0:0:0:ffff:150f:8f40
21.15.143.65 0:0:0:0:0:ffff:150f:8f41
21.15.143.66 0:0:0:0:0:ffff:150f:8f42
21.15.143.67 0:0:0:0:0:ffff:150f:8f43
21.15.143.68 0:0:0:0:0:ffff:150f:8f44
21.15.143.69 0:0:0:0:0:ffff:150f:8f45
21.15.143.70 0:0:0:0:0:ffff:150f:8f46
21.15.143.71 0:0:0:0:0:ffff:150f:8f47
21.15.143.72 0:0:0:0:0:ffff:150f:8f48
21.15.143.73 0:0:0:0:0:ffff:150f:8f49
21.15.143.74 0:0:0:0:0:ffff:150f:8f4a
21.15.143.75 0:0:0:0:0:ffff:150f:8f4b
21.15.143.76 0:0:0:0:0:ffff:150f:8f4c
21.15.143.77 0:0:0:0:0:ffff:150f:8f4d
21.15.143.78 0:0:0:0:0:ffff:150f:8f4e
21.15.143.79 0:0:0:0:0:ffff:150f:8f4f
21.15.143.80 0:0:0:0:0:ffff:150f:8f50
21.15.143.81 0:0:0:0:0:ffff:150f:8f51
21.15.143.82 0:0:0:0:0:ffff:150f:8f52
21.15.143.83 0:0:0:0:0:ffff:150f:8f53
21.15.143.84 0:0:0:0:0:ffff:150f:8f54
21.15.143.85 0:0:0:0:0:ffff:150f:8f55
21.15.143.86 0:0:0:0:0:ffff:150f:8f56
21.15.143.87 0:0:0:0:0:ffff:150f:8f57
21.15.143.88 0:0:0:0:0:ffff:150f:8f58
21.15.143.89 0:0:0:0:0:ffff:150f:8f59
21.15.143.90 0:0:0:0:0:ffff:150f:8f5a
21.15.143.91 0:0:0:0:0:ffff:150f:8f5b
21.15.143.92 0:0:0:0:0:ffff:150f:8f5c
21.15.143.93 0:0:0:0:0:ffff:150f:8f5d
21.15.143.94 0:0:0:0:0:ffff:150f:8f5e
21.15.143.95 0:0:0:0:0:ffff:150f:8f5f
21.15.143.96 0:0:0:0:0:ffff:150f:8f60
21.15.143.97 0:0:0:0:0:ffff:150f:8f61
21.15.143.98 0:0:0:0:0:ffff:150f:8f62
21.15.143.99 0:0:0:0:0:ffff:150f:8f63
21.15.143.100 0:0:0:0:0:ffff:150f:8f64
21.15.143.101 0:0:0:0:0:ffff:150f:8f65
21.15.143.102 0:0:0:0:0:ffff:150f:8f66
21.15.143.103 0:0:0:0:0:ffff:150f:8f67
21.15.143.104 0:0:0:0:0:ffff:150f:8f68
21.15.143.105 0:0:0:0:0:ffff:150f:8f69
21.15.143.106 0:0:0:0:0:ffff:150f:8f6a
21.15.143.107 0:0:0:0:0:ffff:150f:8f6b
21.15.143.108 0:0:0:0:0:ffff:150f:8f6c
21.15.143.109 0:0:0:0:0:ffff:150f:8f6d
21.15.143.110 0:0:0:0:0:ffff:150f:8f6e
21.15.143.111 0:0:0:0:0:ffff:150f:8f6f
21.15.143.112 0:0:0:0:0:ffff:150f:8f70
21.15.143.113 0:0:0:0:0:ffff:150f:8f71
21.15.143.114 0:0:0:0:0:ffff:150f:8f72
21.15.143.115 0:0:0:0:0:ffff:150f:8f73
21.15.143.116 0:0:0:0:0:ffff:150f:8f74
21.15.143.117 0:0:0:0:0:ffff:150f:8f75
21.15.143.118 0:0:0:0:0:ffff:150f:8f76
21.15.143.119 0:0:0:0:0:ffff:150f:8f77
21.15.143.120 0:0:0:0:0:ffff:150f:8f78


21.15.143.121 0:0:0:0:0:ffff:150f:8f79
21.15.143.122 0:0:0:0:0:ffff:150f:8f7a
21.15.143.123 0:0:0:0:0:ffff:150f:8f7b
21.15.143.124 0:0:0:0:0:ffff:150f:8f7c
21.15.143.125 0:0:0:0:0:ffff:150f:8f7d
21.15.143.126 0:0:0:0:0:ffff:150f:8f7e
21.15.143.127 0:0:0:0:0:ffff:150f:8f7f
21.15.143.128 0:0:0:0:0:ffff:150f:8f80
21.15.143.129 0:0:0:0:0:ffff:150f:8f81
21.15.143.130 0:0:0:0:0:ffff:150f:8f82
21.15.143.131 0:0:0:0:0:ffff:150f:8f83
21.15.143.132 0:0:0:0:0:ffff:150f:8f84
21.15.143.133 0:0:0:0:0:ffff:150f:8f85
21.15.143.134 0:0:0:0:0:ffff:150f:8f86
21.15.143.135 0:0:0:0:0:ffff:150f:8f87
21.15.143.136 0:0:0:0:0:ffff:150f:8f88
21.15.143.137 0:0:0:0:0:ffff:150f:8f89
21.15.143.138 0:0:0:0:0:ffff:150f:8f8a
21.15.143.139 0:0:0:0:0:ffff:150f:8f8b
21.15.143.140 0:0:0:0:0:ffff:150f:8f8c
21.15.143.141 0:0:0:0:0:ffff:150f:8f8d
21.15.143.142 0:0:0:0:0:ffff:150f:8f8e
21.15.143.143 0:0:0:0:0:ffff:150f:8f8f
21.15.143.144 0:0:0:0:0:ffff:150f:8f90
21.15.143.145 0:0:0:0:0:ffff:150f:8f91
21.15.143.146 0:0:0:0:0:ffff:150f:8f92
21.15.143.147 0:0:0:0:0:ffff:150f:8f93
21.15.143.148 0:0:0:0:0:ffff:150f:8f94
21.15.143.149 0:0:0:0:0:ffff:150f:8f95
21.15.143.150 0:0:0:0:0:ffff:150f:8f96
21.15.143.151 0:0:0:0:0:ffff:150f:8f97
21.15.143.152 0:0:0:0:0:ffff:150f:8f98
21.15.143.153 0:0:0:0:0:ffff:150f:8f99
21.15.143.154 0:0:0:0:0:ffff:150f:8f9a
21.15.143.155 0:0:0:0:0:ffff:150f:8f9b
21.15.143.156 0:0:0:0:0:ffff:150f:8f9c
21.15.143.157 0:0:0:0:0:ffff:150f:8f9d
21.15.143.158 0:0:0:0:0:ffff:150f:8f9e
21.15.143.159 0:0:0:0:0:ffff:150f:8f9f
21.15.143.160 0:0:0:0:0:ffff:150f:8fa0
21.15.143.161 0:0:0:0:0:ffff:150f:8fa1
21.15.143.162 0:0:0:0:0:ffff:150f:8fa2
21.15.143.163 0:0:0:0:0:ffff:150f:8fa3
21.15.143.164 0:0:0:0:0:ffff:150f:8fa4
21.15.143.165 0:0:0:0:0:ffff:150f:8fa5
21.15.143.166 0:0:0:0:0:ffff:150f:8fa6
21.15.143.167 0:0:0:0:0:ffff:150f:8fa7
21.15.143.168 0:0:0:0:0:ffff:150f:8fa8
21.15.143.169 0:0:0:0:0:ffff:150f:8fa9
21.15.143.170 0:0:0:0:0:ffff:150f:8faa
21.15.143.171 0:0:0:0:0:ffff:150f:8fab
21.15.143.172 0:0:0:0:0:ffff:150f:8fac
21.15.143.173 0:0:0:0:0:ffff:150f:8fad
21.15.143.174 0:0:0:0:0:ffff:150f:8fae
21.15.143.175 0:0:0:0:0:ffff:150f:8faf
21.15.143.176 0:0:0:0:0:ffff:150f:8fb0
21.15.143.177 0:0:0:0:0:ffff:150f:8fb1
21.15.143.178 0:0:0:0:0:ffff:150f:8fb2
21.15.143.179 0:0:0:0:0:ffff:150f:8fb3
21.15.143.180 0:0:0:0:0:ffff:150f:8fb4


21.15.143.181 0:0:0:0:0:ffff:150f:8fb5
21.15.143.182 0:0:0:0:0:ffff:150f:8fb6
21.15.143.183 0:0:0:0:0:ffff:150f:8fb7
21.15.143.184 0:0:0:0:0:ffff:150f:8fb8
21.15.143.185 0:0:0:0:0:ffff:150f:8fb9
21.15.143.186 0:0:0:0:0:ffff:150f:8fba
21.15.143.187 0:0:0:0:0:ffff:150f:8fbb
21.15.143.188 0:0:0:0:0:ffff:150f:8fbc
21.15.143.189 0:0:0:0:0:ffff:150f:8fbd
21.15.143.190 0:0:0:0:0:ffff:150f:8fbe
21.15.143.191 0:0:0:0:0:ffff:150f:8fbf
21.15.143.192 0:0:0:0:0:ffff:150f:8fc0
21.15.143.193 0:0:0:0:0:ffff:150f:8fc1
21.15.143.194 0:0:0:0:0:ffff:150f:8fc2
21.15.143.195 0:0:0:0:0:ffff:150f:8fc3
21.15.143.196 0:0:0:0:0:ffff:150f:8fc4
21.15.143.197 0:0:0:0:0:ffff:150f:8fc5
21.15.143.198 0:0:0:0:0:ffff:150f:8fc6
21.15.143.199 0:0:0:0:0:ffff:150f:8fc7
21.15.143.200 0:0:0:0:0:ffff:150f:8fc8
21.15.143.201 0:0:0:0:0:ffff:150f:8fc9
21.15.143.202 0:0:0:0:0:ffff:150f:8fca
21.15.143.203 0:0:0:0:0:ffff:150f:8fcb
21.15.143.204 0:0:0:0:0:ffff:150f:8fcc
21.15.143.205 0:0:0:0:0:ffff:150f:8fcd
21.15.143.206 0:0:0:0:0:ffff:150f:8fce
21.15.143.207 0:0:0:0:0:ffff:150f:8fcf
21.15.143.208 0:0:0:0:0:ffff:150f:8fd0
21.15.143.209 0:0:0:0:0:ffff:150f:8fd1
21.15.143.210 0:0:0:0:0:ffff:150f:8fd2
21.15.143.211 0:0:0:0:0:ffff:150f:8fd3
21.15.143.212 0:0:0:0:0:ffff:150f:8fd4
21.15.143.213 0:0:0:0:0:ffff:150f:8fd5
21.15.143.214 0:0:0:0:0:ffff:150f:8fd6
21.15.143.215 0:0:0:0:0:ffff:150f:8fd7
21.15.143.216 0:0:0:0:0:ffff:150f:8fd8
21.15.143.217 0:0:0:0:0:ffff:150f:8fd9
21.15.143.218 0:0:0:0:0:ffff:150f:8fda
21.15.143.219 0:0:0:0:0:ffff:150f:8fdb
21.15.143.220 0:0:0:0:0:ffff:150f:8fdc
21.15.143.221 0:0:0:0:0:ffff:150f:8fdd
21.15.143.222 0:0:0:0:0:ffff:150f:8fde
21.15.143.223 0:0:0:0:0:ffff:150f:8fdf
21.15.143.224 0:0:0:0:0:ffff:150f:8fe0
21.15.143.225 0:0:0:0:0:ffff:150f:8fe1
21.15.143.226 0:0:0:0:0:ffff:150f:8fe2
21.15.143.227 0:0:0:0:0:ffff:150f:8fe3
21.15.143.228 0:0:0:0:0:ffff:150f:8fe4
21.15.143.229 0:0:0:0:0:ffff:150f:8fe5
21.15.143.230 0:0:0:0:0:ffff:150f:8fe6
21.15.143.231 0:0:0:0:0:ffff:150f:8fe7
21.15.143.232 0:0:0:0:0:ffff:150f:8fe8
21.15.143.233 0:0:0:0:0:ffff:150f:8fe9
21.15.143.234 0:0:0:0:0:ffff:150f:8fea
21.15.143.235 0:0:0:0:0:ffff:150f:8feb
21.15.143.236 0:0:0:0:0:ffff:150f:8fec
21.15.143.237 0:0:0:0:0:ffff:150f:8fed
21.15.143.238 0:0:0:0:0:ffff:150f:8fee
21.15.143.239 0:0:0:0:0:ffff:150f:8fef
21.15.143.240 0:0:0:0:0:ffff:150f:8ff0
21.15.143.241 0:0:0:0:0:ffff:150f:8ff1
21.15.143.242 0:0:0:0:0:ffff:150f:8ff2
21.15.143.243 0:0:0:0:0:ffff:150f:8ff3
21.15.143.244 0:0:0:0:0:ffff:150f:8ff4
21.15.143.245 0:0:0:0:0:ffff:150f:8ff5
21.15.143.246 0:0:0:0:0:ffff:150f:8ff6
21.15.143.247 0:0:0:0:0:ffff:150f:8ff7
21.15.143.248 0:0:0:0:0:ffff:150f:8ff8
21.15.143.249 0:0:0:0:0:ffff:150f:8ff9
21.15.143.250 0:0:0:0:0:ffff:150f:8ffa
21.15.143.251 0:0:0:0:0:ffff:150f:8ffb
21.15.143.252 0:0:0:0:0:ffff:150f:8ffc
21.15.143.253 0:0:0:0:0:ffff:150f:8ffd
21.15.143.254 0:0:0:0:0:ffff:150f:8ffe
21.15.143.255 0:0:0:0:0:ffff:150f:8fff


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.