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
123.221.15.1 0:0:0:0:0:ffff:7bdd:f01
123.221.15.2 0:0:0:0:0:ffff:7bdd:f02
123.221.15.3 0:0:0:0:0:ffff:7bdd:f03
123.221.15.4 0:0:0:0:0:ffff:7bdd:f04
123.221.15.5 0:0:0:0:0:ffff:7bdd:f05
123.221.15.6 0:0:0:0:0:ffff:7bdd:f06
123.221.15.7 0:0:0:0:0:ffff:7bdd:f07
123.221.15.8 0:0:0:0:0:ffff:7bdd:f08
123.221.15.9 0:0:0:0:0:ffff:7bdd:f09
123.221.15.10 0:0:0:0:0:ffff:7bdd:f0a
123.221.15.11 0:0:0:0:0:ffff:7bdd:f0b
123.221.15.12 0:0:0:0:0:ffff:7bdd:f0c
123.221.15.13 0:0:0:0:0:ffff:7bdd:f0d
123.221.15.14 0:0:0:0:0:ffff:7bdd:f0e
123.221.15.15 0:0:0:0:0:ffff:7bdd:f0f
123.221.15.16 0:0:0:0:0:ffff:7bdd:f10
123.221.15.17 0:0:0:0:0:ffff:7bdd:f11
123.221.15.18 0:0:0:0:0:ffff:7bdd:f12
123.221.15.19 0:0:0:0:0:ffff:7bdd:f13
123.221.15.20 0:0:0:0:0:ffff:7bdd:f14
123.221.15.21 0:0:0:0:0:ffff:7bdd:f15
123.221.15.22 0:0:0:0:0:ffff:7bdd:f16
123.221.15.23 0:0:0:0:0:ffff:7bdd:f17
123.221.15.24 0:0:0:0:0:ffff:7bdd:f18
123.221.15.25 0:0:0:0:0:ffff:7bdd:f19
123.221.15.26 0:0:0:0:0:ffff:7bdd:f1a
123.221.15.27 0:0:0:0:0:ffff:7bdd:f1b
123.221.15.28 0:0:0:0:0:ffff:7bdd:f1c
123.221.15.29 0:0:0:0:0:ffff:7bdd:f1d
123.221.15.30 0:0:0:0:0:ffff:7bdd:f1e
123.221.15.31 0:0:0:0:0:ffff:7bdd:f1f
123.221.15.32 0:0:0:0:0:ffff:7bdd:f20
123.221.15.33 0:0:0:0:0:ffff:7bdd:f21
123.221.15.34 0:0:0:0:0:ffff:7bdd:f22
123.221.15.35 0:0:0:0:0:ffff:7bdd:f23
123.221.15.36 0:0:0:0:0:ffff:7bdd:f24
123.221.15.37 0:0:0:0:0:ffff:7bdd:f25
123.221.15.38 0:0:0:0:0:ffff:7bdd:f26
123.221.15.39 0:0:0:0:0:ffff:7bdd:f27
123.221.15.40 0:0:0:0:0:ffff:7bdd:f28
123.221.15.41 0:0:0:0:0:ffff:7bdd:f29
123.221.15.42 0:0:0:0:0:ffff:7bdd:f2a
123.221.15.43 0:0:0:0:0:ffff:7bdd:f2b
123.221.15.44 0:0:0:0:0:ffff:7bdd:f2c
123.221.15.45 0:0:0:0:0:ffff:7bdd:f2d
123.221.15.46 0:0:0:0:0:ffff:7bdd:f2e
123.221.15.47 0:0:0:0:0:ffff:7bdd:f2f
123.221.15.48 0:0:0:0:0:ffff:7bdd:f30
123.221.15.49 0:0:0:0:0:ffff:7bdd:f31
123.221.15.50 0:0:0:0:0:ffff:7bdd:f32
123.221.15.51 0:0:0:0:0:ffff:7bdd:f33
123.221.15.52 0:0:0:0:0:ffff:7bdd:f34
123.221.15.53 0:0:0:0:0:ffff:7bdd:f35
123.221.15.54 0:0:0:0:0:ffff:7bdd:f36
123.221.15.55 0:0:0:0:0:ffff:7bdd:f37
123.221.15.56 0:0:0:0:0:ffff:7bdd:f38
123.221.15.57 0:0:0:0:0:ffff:7bdd:f39
123.221.15.58 0:0:0:0:0:ffff:7bdd:f3a
123.221.15.59 0:0:0:0:0:ffff:7bdd:f3b
123.221.15.60 0:0:0:0:0:ffff:7bdd:f3c


123.221.15.61 0:0:0:0:0:ffff:7bdd:f3d
123.221.15.62 0:0:0:0:0:ffff:7bdd:f3e
123.221.15.63 0:0:0:0:0:ffff:7bdd:f3f
123.221.15.64 0:0:0:0:0:ffff:7bdd:f40
123.221.15.65 0:0:0:0:0:ffff:7bdd:f41
123.221.15.66 0:0:0:0:0:ffff:7bdd:f42
123.221.15.67 0:0:0:0:0:ffff:7bdd:f43
123.221.15.68 0:0:0:0:0:ffff:7bdd:f44
123.221.15.69 0:0:0:0:0:ffff:7bdd:f45
123.221.15.70 0:0:0:0:0:ffff:7bdd:f46
123.221.15.71 0:0:0:0:0:ffff:7bdd:f47
123.221.15.72 0:0:0:0:0:ffff:7bdd:f48
123.221.15.73 0:0:0:0:0:ffff:7bdd:f49
123.221.15.74 0:0:0:0:0:ffff:7bdd:f4a
123.221.15.75 0:0:0:0:0:ffff:7bdd:f4b
123.221.15.76 0:0:0:0:0:ffff:7bdd:f4c
123.221.15.77 0:0:0:0:0:ffff:7bdd:f4d
123.221.15.78 0:0:0:0:0:ffff:7bdd:f4e
123.221.15.79 0:0:0:0:0:ffff:7bdd:f4f
123.221.15.80 0:0:0:0:0:ffff:7bdd:f50
123.221.15.81 0:0:0:0:0:ffff:7bdd:f51
123.221.15.82 0:0:0:0:0:ffff:7bdd:f52
123.221.15.83 0:0:0:0:0:ffff:7bdd:f53
123.221.15.84 0:0:0:0:0:ffff:7bdd:f54
123.221.15.85 0:0:0:0:0:ffff:7bdd:f55
123.221.15.86 0:0:0:0:0:ffff:7bdd:f56
123.221.15.87 0:0:0:0:0:ffff:7bdd:f57
123.221.15.88 0:0:0:0:0:ffff:7bdd:f58
123.221.15.89 0:0:0:0:0:ffff:7bdd:f59
123.221.15.90 0:0:0:0:0:ffff:7bdd:f5a
123.221.15.91 0:0:0:0:0:ffff:7bdd:f5b
123.221.15.92 0:0:0:0:0:ffff:7bdd:f5c
123.221.15.93 0:0:0:0:0:ffff:7bdd:f5d
123.221.15.94 0:0:0:0:0:ffff:7bdd:f5e
123.221.15.95 0:0:0:0:0:ffff:7bdd:f5f
123.221.15.96 0:0:0:0:0:ffff:7bdd:f60
123.221.15.97 0:0:0:0:0:ffff:7bdd:f61
123.221.15.98 0:0:0:0:0:ffff:7bdd:f62
123.221.15.99 0:0:0:0:0:ffff:7bdd:f63
123.221.15.100 0:0:0:0:0:ffff:7bdd:f64
123.221.15.101 0:0:0:0:0:ffff:7bdd:f65
123.221.15.102 0:0:0:0:0:ffff:7bdd:f66
123.221.15.103 0:0:0:0:0:ffff:7bdd:f67
123.221.15.104 0:0:0:0:0:ffff:7bdd:f68
123.221.15.105 0:0:0:0:0:ffff:7bdd:f69
123.221.15.106 0:0:0:0:0:ffff:7bdd:f6a
123.221.15.107 0:0:0:0:0:ffff:7bdd:f6b
123.221.15.108 0:0:0:0:0:ffff:7bdd:f6c
123.221.15.109 0:0:0:0:0:ffff:7bdd:f6d
123.221.15.110 0:0:0:0:0:ffff:7bdd:f6e
123.221.15.111 0:0:0:0:0:ffff:7bdd:f6f
123.221.15.112 0:0:0:0:0:ffff:7bdd:f70
123.221.15.113 0:0:0:0:0:ffff:7bdd:f71
123.221.15.114 0:0:0:0:0:ffff:7bdd:f72
123.221.15.115 0:0:0:0:0:ffff:7bdd:f73
123.221.15.116 0:0:0:0:0:ffff:7bdd:f74
123.221.15.117 0:0:0:0:0:ffff:7bdd:f75
123.221.15.118 0:0:0:0:0:ffff:7bdd:f76
123.221.15.119 0:0:0:0:0:ffff:7bdd:f77
123.221.15.120 0:0:0:0:0:ffff:7bdd:f78


123.221.15.121 0:0:0:0:0:ffff:7bdd:f79
123.221.15.122 0:0:0:0:0:ffff:7bdd:f7a
123.221.15.123 0:0:0:0:0:ffff:7bdd:f7b
123.221.15.124 0:0:0:0:0:ffff:7bdd:f7c
123.221.15.125 0:0:0:0:0:ffff:7bdd:f7d
123.221.15.126 0:0:0:0:0:ffff:7bdd:f7e
123.221.15.127 0:0:0:0:0:ffff:7bdd:f7f
123.221.15.128 0:0:0:0:0:ffff:7bdd:f80
123.221.15.129 0:0:0:0:0:ffff:7bdd:f81
123.221.15.130 0:0:0:0:0:ffff:7bdd:f82
123.221.15.131 0:0:0:0:0:ffff:7bdd:f83
123.221.15.132 0:0:0:0:0:ffff:7bdd:f84
123.221.15.133 0:0:0:0:0:ffff:7bdd:f85
123.221.15.134 0:0:0:0:0:ffff:7bdd:f86
123.221.15.135 0:0:0:0:0:ffff:7bdd:f87
123.221.15.136 0:0:0:0:0:ffff:7bdd:f88
123.221.15.137 0:0:0:0:0:ffff:7bdd:f89
123.221.15.138 0:0:0:0:0:ffff:7bdd:f8a
123.221.15.139 0:0:0:0:0:ffff:7bdd:f8b
123.221.15.140 0:0:0:0:0:ffff:7bdd:f8c
123.221.15.141 0:0:0:0:0:ffff:7bdd:f8d
123.221.15.142 0:0:0:0:0:ffff:7bdd:f8e
123.221.15.143 0:0:0:0:0:ffff:7bdd:f8f
123.221.15.144 0:0:0:0:0:ffff:7bdd:f90
123.221.15.145 0:0:0:0:0:ffff:7bdd:f91
123.221.15.146 0:0:0:0:0:ffff:7bdd:f92
123.221.15.147 0:0:0:0:0:ffff:7bdd:f93
123.221.15.148 0:0:0:0:0:ffff:7bdd:f94
123.221.15.149 0:0:0:0:0:ffff:7bdd:f95
123.221.15.150 0:0:0:0:0:ffff:7bdd:f96
123.221.15.151 0:0:0:0:0:ffff:7bdd:f97
123.221.15.152 0:0:0:0:0:ffff:7bdd:f98
123.221.15.153 0:0:0:0:0:ffff:7bdd:f99
123.221.15.154 0:0:0:0:0:ffff:7bdd:f9a
123.221.15.155 0:0:0:0:0:ffff:7bdd:f9b
123.221.15.156 0:0:0:0:0:ffff:7bdd:f9c
123.221.15.157 0:0:0:0:0:ffff:7bdd:f9d
123.221.15.158 0:0:0:0:0:ffff:7bdd:f9e
123.221.15.159 0:0:0:0:0:ffff:7bdd:f9f
123.221.15.160 0:0:0:0:0:ffff:7bdd:fa0
123.221.15.161 0:0:0:0:0:ffff:7bdd:fa1
123.221.15.162 0:0:0:0:0:ffff:7bdd:fa2
123.221.15.163 0:0:0:0:0:ffff:7bdd:fa3
123.221.15.164 0:0:0:0:0:ffff:7bdd:fa4
123.221.15.165 0:0:0:0:0:ffff:7bdd:fa5
123.221.15.166 0:0:0:0:0:ffff:7bdd:fa6
123.221.15.167 0:0:0:0:0:ffff:7bdd:fa7
123.221.15.168 0:0:0:0:0:ffff:7bdd:fa8
123.221.15.169 0:0:0:0:0:ffff:7bdd:fa9
123.221.15.170 0:0:0:0:0:ffff:7bdd:faa
123.221.15.171 0:0:0:0:0:ffff:7bdd:fab
123.221.15.172 0:0:0:0:0:ffff:7bdd:fac
123.221.15.173 0:0:0:0:0:ffff:7bdd:fad
123.221.15.174 0:0:0:0:0:ffff:7bdd:fae
123.221.15.175 0:0:0:0:0:ffff:7bdd:faf
123.221.15.176 0:0:0:0:0:ffff:7bdd:fb0
123.221.15.177 0:0:0:0:0:ffff:7bdd:fb1
123.221.15.178 0:0:0:0:0:ffff:7bdd:fb2
123.221.15.179 0:0:0:0:0:ffff:7bdd:fb3
123.221.15.180 0:0:0:0:0:ffff:7bdd:fb4


123.221.15.181 0:0:0:0:0:ffff:7bdd:fb5
123.221.15.182 0:0:0:0:0:ffff:7bdd:fb6
123.221.15.183 0:0:0:0:0:ffff:7bdd:fb7
123.221.15.184 0:0:0:0:0:ffff:7bdd:fb8
123.221.15.185 0:0:0:0:0:ffff:7bdd:fb9
123.221.15.186 0:0:0:0:0:ffff:7bdd:fba
123.221.15.187 0:0:0:0:0:ffff:7bdd:fbb
123.221.15.188 0:0:0:0:0:ffff:7bdd:fbc
123.221.15.189 0:0:0:0:0:ffff:7bdd:fbd
123.221.15.190 0:0:0:0:0:ffff:7bdd:fbe
123.221.15.191 0:0:0:0:0:ffff:7bdd:fbf
123.221.15.192 0:0:0:0:0:ffff:7bdd:fc0
123.221.15.193 0:0:0:0:0:ffff:7bdd:fc1
123.221.15.194 0:0:0:0:0:ffff:7bdd:fc2
123.221.15.195 0:0:0:0:0:ffff:7bdd:fc3
123.221.15.196 0:0:0:0:0:ffff:7bdd:fc4
123.221.15.197 0:0:0:0:0:ffff:7bdd:fc5
123.221.15.198 0:0:0:0:0:ffff:7bdd:fc6
123.221.15.199 0:0:0:0:0:ffff:7bdd:fc7
123.221.15.200 0:0:0:0:0:ffff:7bdd:fc8
123.221.15.201 0:0:0:0:0:ffff:7bdd:fc9
123.221.15.202 0:0:0:0:0:ffff:7bdd:fca
123.221.15.203 0:0:0:0:0:ffff:7bdd:fcb
123.221.15.204 0:0:0:0:0:ffff:7bdd:fcc
123.221.15.205 0:0:0:0:0:ffff:7bdd:fcd
123.221.15.206 0:0:0:0:0:ffff:7bdd:fce
123.221.15.207 0:0:0:0:0:ffff:7bdd:fcf
123.221.15.208 0:0:0:0:0:ffff:7bdd:fd0
123.221.15.209 0:0:0:0:0:ffff:7bdd:fd1
123.221.15.210 0:0:0:0:0:ffff:7bdd:fd2
123.221.15.211 0:0:0:0:0:ffff:7bdd:fd3
123.221.15.212 0:0:0:0:0:ffff:7bdd:fd4
123.221.15.213 0:0:0:0:0:ffff:7bdd:fd5
123.221.15.214 0:0:0:0:0:ffff:7bdd:fd6
123.221.15.215 0:0:0:0:0:ffff:7bdd:fd7
123.221.15.216 0:0:0:0:0:ffff:7bdd:fd8
123.221.15.217 0:0:0:0:0:ffff:7bdd:fd9
123.221.15.218 0:0:0:0:0:ffff:7bdd:fda
123.221.15.219 0:0:0:0:0:ffff:7bdd:fdb
123.221.15.220 0:0:0:0:0:ffff:7bdd:fdc
123.221.15.221 0:0:0:0:0:ffff:7bdd:fdd
123.221.15.222 0:0:0:0:0:ffff:7bdd:fde
123.221.15.223 0:0:0:0:0:ffff:7bdd:fdf
123.221.15.224 0:0:0:0:0:ffff:7bdd:fe0
123.221.15.225 0:0:0:0:0:ffff:7bdd:fe1
123.221.15.226 0:0:0:0:0:ffff:7bdd:fe2
123.221.15.227 0:0:0:0:0:ffff:7bdd:fe3
123.221.15.228 0:0:0:0:0:ffff:7bdd:fe4
123.221.15.229 0:0:0:0:0:ffff:7bdd:fe5
123.221.15.230 0:0:0:0:0:ffff:7bdd:fe6
123.221.15.231 0:0:0:0:0:ffff:7bdd:fe7
123.221.15.232 0:0:0:0:0:ffff:7bdd:fe8
123.221.15.233 0:0:0:0:0:ffff:7bdd:fe9
123.221.15.234 0:0:0:0:0:ffff:7bdd:fea
123.221.15.235 0:0:0:0:0:ffff:7bdd:feb
123.221.15.236 0:0:0:0:0:ffff:7bdd:fec
123.221.15.237 0:0:0:0:0:ffff:7bdd:fed
123.221.15.238 0:0:0:0:0:ffff:7bdd:fee
123.221.15.239 0:0:0:0:0:ffff:7bdd:fef
123.221.15.240 0:0:0:0:0:ffff:7bdd:ff0
123.221.15.241 0:0:0:0:0:ffff:7bdd:ff1
123.221.15.242 0:0:0:0:0:ffff:7bdd:ff2
123.221.15.243 0:0:0:0:0:ffff:7bdd:ff3
123.221.15.244 0:0:0:0:0:ffff:7bdd:ff4
123.221.15.245 0:0:0:0:0:ffff:7bdd:ff5
123.221.15.246 0:0:0:0:0:ffff:7bdd:ff6
123.221.15.247 0:0:0:0:0:ffff:7bdd:ff7
123.221.15.248 0:0:0:0:0:ffff:7bdd:ff8
123.221.15.249 0:0:0:0:0:ffff:7bdd:ff9
123.221.15.250 0:0:0:0:0:ffff:7bdd:ffa
123.221.15.251 0:0:0:0:0:ffff:7bdd:ffb
123.221.15.252 0:0:0:0:0:ffff:7bdd:ffc
123.221.15.253 0:0:0:0:0:ffff:7bdd:ffd
123.221.15.254 0:0:0:0:0:ffff:7bdd:ffe
123.221.15.255 0:0:0:0:0:ffff:7bdd:fff


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.