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
123.255.111.1 0:0:0:0:0:ffff:7bff:6f01
123.255.111.2 0:0:0:0:0:ffff:7bff:6f02
123.255.111.3 0:0:0:0:0:ffff:7bff:6f03
123.255.111.4 0:0:0:0:0:ffff:7bff:6f04
123.255.111.5 0:0:0:0:0:ffff:7bff:6f05
123.255.111.6 0:0:0:0:0:ffff:7bff:6f06
123.255.111.7 0:0:0:0:0:ffff:7bff:6f07
123.255.111.8 0:0:0:0:0:ffff:7bff:6f08
123.255.111.9 0:0:0:0:0:ffff:7bff:6f09
123.255.111.10 0:0:0:0:0:ffff:7bff:6f0a
123.255.111.11 0:0:0:0:0:ffff:7bff:6f0b
123.255.111.12 0:0:0:0:0:ffff:7bff:6f0c
123.255.111.13 0:0:0:0:0:ffff:7bff:6f0d
123.255.111.14 0:0:0:0:0:ffff:7bff:6f0e
123.255.111.15 0:0:0:0:0:ffff:7bff:6f0f
123.255.111.16 0:0:0:0:0:ffff:7bff:6f10
123.255.111.17 0:0:0:0:0:ffff:7bff:6f11
123.255.111.18 0:0:0:0:0:ffff:7bff:6f12
123.255.111.19 0:0:0:0:0:ffff:7bff:6f13
123.255.111.20 0:0:0:0:0:ffff:7bff:6f14
123.255.111.21 0:0:0:0:0:ffff:7bff:6f15
123.255.111.22 0:0:0:0:0:ffff:7bff:6f16
123.255.111.23 0:0:0:0:0:ffff:7bff:6f17
123.255.111.24 0:0:0:0:0:ffff:7bff:6f18
123.255.111.25 0:0:0:0:0:ffff:7bff:6f19
123.255.111.26 0:0:0:0:0:ffff:7bff:6f1a
123.255.111.27 0:0:0:0:0:ffff:7bff:6f1b
123.255.111.28 0:0:0:0:0:ffff:7bff:6f1c
123.255.111.29 0:0:0:0:0:ffff:7bff:6f1d
123.255.111.30 0:0:0:0:0:ffff:7bff:6f1e
123.255.111.31 0:0:0:0:0:ffff:7bff:6f1f
123.255.111.32 0:0:0:0:0:ffff:7bff:6f20
123.255.111.33 0:0:0:0:0:ffff:7bff:6f21
123.255.111.34 0:0:0:0:0:ffff:7bff:6f22
123.255.111.35 0:0:0:0:0:ffff:7bff:6f23
123.255.111.36 0:0:0:0:0:ffff:7bff:6f24
123.255.111.37 0:0:0:0:0:ffff:7bff:6f25
123.255.111.38 0:0:0:0:0:ffff:7bff:6f26
123.255.111.39 0:0:0:0:0:ffff:7bff:6f27
123.255.111.40 0:0:0:0:0:ffff:7bff:6f28
123.255.111.41 0:0:0:0:0:ffff:7bff:6f29
123.255.111.42 0:0:0:0:0:ffff:7bff:6f2a
123.255.111.43 0:0:0:0:0:ffff:7bff:6f2b
123.255.111.44 0:0:0:0:0:ffff:7bff:6f2c
123.255.111.45 0:0:0:0:0:ffff:7bff:6f2d
123.255.111.46 0:0:0:0:0:ffff:7bff:6f2e
123.255.111.47 0:0:0:0:0:ffff:7bff:6f2f
123.255.111.48 0:0:0:0:0:ffff:7bff:6f30
123.255.111.49 0:0:0:0:0:ffff:7bff:6f31
123.255.111.50 0:0:0:0:0:ffff:7bff:6f32
123.255.111.51 0:0:0:0:0:ffff:7bff:6f33
123.255.111.52 0:0:0:0:0:ffff:7bff:6f34
123.255.111.53 0:0:0:0:0:ffff:7bff:6f35
123.255.111.54 0:0:0:0:0:ffff:7bff:6f36
123.255.111.55 0:0:0:0:0:ffff:7bff:6f37
123.255.111.56 0:0:0:0:0:ffff:7bff:6f38
123.255.111.57 0:0:0:0:0:ffff:7bff:6f39
123.255.111.58 0:0:0:0:0:ffff:7bff:6f3a
123.255.111.59 0:0:0:0:0:ffff:7bff:6f3b
123.255.111.60 0:0:0:0:0:ffff:7bff:6f3c


123.255.111.61 0:0:0:0:0:ffff:7bff:6f3d
123.255.111.62 0:0:0:0:0:ffff:7bff:6f3e
123.255.111.63 0:0:0:0:0:ffff:7bff:6f3f
123.255.111.64 0:0:0:0:0:ffff:7bff:6f40
123.255.111.65 0:0:0:0:0:ffff:7bff:6f41
123.255.111.66 0:0:0:0:0:ffff:7bff:6f42
123.255.111.67 0:0:0:0:0:ffff:7bff:6f43
123.255.111.68 0:0:0:0:0:ffff:7bff:6f44
123.255.111.69 0:0:0:0:0:ffff:7bff:6f45
123.255.111.70 0:0:0:0:0:ffff:7bff:6f46
123.255.111.71 0:0:0:0:0:ffff:7bff:6f47
123.255.111.72 0:0:0:0:0:ffff:7bff:6f48
123.255.111.73 0:0:0:0:0:ffff:7bff:6f49
123.255.111.74 0:0:0:0:0:ffff:7bff:6f4a
123.255.111.75 0:0:0:0:0:ffff:7bff:6f4b
123.255.111.76 0:0:0:0:0:ffff:7bff:6f4c
123.255.111.77 0:0:0:0:0:ffff:7bff:6f4d
123.255.111.78 0:0:0:0:0:ffff:7bff:6f4e
123.255.111.79 0:0:0:0:0:ffff:7bff:6f4f
123.255.111.80 0:0:0:0:0:ffff:7bff:6f50
123.255.111.81 0:0:0:0:0:ffff:7bff:6f51
123.255.111.82 0:0:0:0:0:ffff:7bff:6f52
123.255.111.83 0:0:0:0:0:ffff:7bff:6f53
123.255.111.84 0:0:0:0:0:ffff:7bff:6f54
123.255.111.85 0:0:0:0:0:ffff:7bff:6f55
123.255.111.86 0:0:0:0:0:ffff:7bff:6f56
123.255.111.87 0:0:0:0:0:ffff:7bff:6f57
123.255.111.88 0:0:0:0:0:ffff:7bff:6f58
123.255.111.89 0:0:0:0:0:ffff:7bff:6f59
123.255.111.90 0:0:0:0:0:ffff:7bff:6f5a
123.255.111.91 0:0:0:0:0:ffff:7bff:6f5b
123.255.111.92 0:0:0:0:0:ffff:7bff:6f5c
123.255.111.93 0:0:0:0:0:ffff:7bff:6f5d
123.255.111.94 0:0:0:0:0:ffff:7bff:6f5e
123.255.111.95 0:0:0:0:0:ffff:7bff:6f5f
123.255.111.96 0:0:0:0:0:ffff:7bff:6f60
123.255.111.97 0:0:0:0:0:ffff:7bff:6f61
123.255.111.98 0:0:0:0:0:ffff:7bff:6f62
123.255.111.99 0:0:0:0:0:ffff:7bff:6f63
123.255.111.100 0:0:0:0:0:ffff:7bff:6f64
123.255.111.101 0:0:0:0:0:ffff:7bff:6f65
123.255.111.102 0:0:0:0:0:ffff:7bff:6f66
123.255.111.103 0:0:0:0:0:ffff:7bff:6f67
123.255.111.104 0:0:0:0:0:ffff:7bff:6f68
123.255.111.105 0:0:0:0:0:ffff:7bff:6f69
123.255.111.106 0:0:0:0:0:ffff:7bff:6f6a
123.255.111.107 0:0:0:0:0:ffff:7bff:6f6b
123.255.111.108 0:0:0:0:0:ffff:7bff:6f6c
123.255.111.109 0:0:0:0:0:ffff:7bff:6f6d
123.255.111.110 0:0:0:0:0:ffff:7bff:6f6e
123.255.111.111 0:0:0:0:0:ffff:7bff:6f6f
123.255.111.112 0:0:0:0:0:ffff:7bff:6f70
123.255.111.113 0:0:0:0:0:ffff:7bff:6f71
123.255.111.114 0:0:0:0:0:ffff:7bff:6f72
123.255.111.115 0:0:0:0:0:ffff:7bff:6f73
123.255.111.116 0:0:0:0:0:ffff:7bff:6f74
123.255.111.117 0:0:0:0:0:ffff:7bff:6f75
123.255.111.118 0:0:0:0:0:ffff:7bff:6f76
123.255.111.119 0:0:0:0:0:ffff:7bff:6f77
123.255.111.120 0:0:0:0:0:ffff:7bff:6f78


123.255.111.121 0:0:0:0:0:ffff:7bff:6f79
123.255.111.122 0:0:0:0:0:ffff:7bff:6f7a
123.255.111.123 0:0:0:0:0:ffff:7bff:6f7b
123.255.111.124 0:0:0:0:0:ffff:7bff:6f7c
123.255.111.125 0:0:0:0:0:ffff:7bff:6f7d
123.255.111.126 0:0:0:0:0:ffff:7bff:6f7e
123.255.111.127 0:0:0:0:0:ffff:7bff:6f7f
123.255.111.128 0:0:0:0:0:ffff:7bff:6f80
123.255.111.129 0:0:0:0:0:ffff:7bff:6f81
123.255.111.130 0:0:0:0:0:ffff:7bff:6f82
123.255.111.131 0:0:0:0:0:ffff:7bff:6f83
123.255.111.132 0:0:0:0:0:ffff:7bff:6f84
123.255.111.133 0:0:0:0:0:ffff:7bff:6f85
123.255.111.134 0:0:0:0:0:ffff:7bff:6f86
123.255.111.135 0:0:0:0:0:ffff:7bff:6f87
123.255.111.136 0:0:0:0:0:ffff:7bff:6f88
123.255.111.137 0:0:0:0:0:ffff:7bff:6f89
123.255.111.138 0:0:0:0:0:ffff:7bff:6f8a
123.255.111.139 0:0:0:0:0:ffff:7bff:6f8b
123.255.111.140 0:0:0:0:0:ffff:7bff:6f8c
123.255.111.141 0:0:0:0:0:ffff:7bff:6f8d
123.255.111.142 0:0:0:0:0:ffff:7bff:6f8e
123.255.111.143 0:0:0:0:0:ffff:7bff:6f8f
123.255.111.144 0:0:0:0:0:ffff:7bff:6f90
123.255.111.145 0:0:0:0:0:ffff:7bff:6f91
123.255.111.146 0:0:0:0:0:ffff:7bff:6f92
123.255.111.147 0:0:0:0:0:ffff:7bff:6f93
123.255.111.148 0:0:0:0:0:ffff:7bff:6f94
123.255.111.149 0:0:0:0:0:ffff:7bff:6f95
123.255.111.150 0:0:0:0:0:ffff:7bff:6f96
123.255.111.151 0:0:0:0:0:ffff:7bff:6f97
123.255.111.152 0:0:0:0:0:ffff:7bff:6f98
123.255.111.153 0:0:0:0:0:ffff:7bff:6f99
123.255.111.154 0:0:0:0:0:ffff:7bff:6f9a
123.255.111.155 0:0:0:0:0:ffff:7bff:6f9b
123.255.111.156 0:0:0:0:0:ffff:7bff:6f9c
123.255.111.157 0:0:0:0:0:ffff:7bff:6f9d
123.255.111.158 0:0:0:0:0:ffff:7bff:6f9e
123.255.111.159 0:0:0:0:0:ffff:7bff:6f9f
123.255.111.160 0:0:0:0:0:ffff:7bff:6fa0
123.255.111.161 0:0:0:0:0:ffff:7bff:6fa1
123.255.111.162 0:0:0:0:0:ffff:7bff:6fa2
123.255.111.163 0:0:0:0:0:ffff:7bff:6fa3
123.255.111.164 0:0:0:0:0:ffff:7bff:6fa4
123.255.111.165 0:0:0:0:0:ffff:7bff:6fa5
123.255.111.166 0:0:0:0:0:ffff:7bff:6fa6
123.255.111.167 0:0:0:0:0:ffff:7bff:6fa7
123.255.111.168 0:0:0:0:0:ffff:7bff:6fa8
123.255.111.169 0:0:0:0:0:ffff:7bff:6fa9
123.255.111.170 0:0:0:0:0:ffff:7bff:6faa
123.255.111.171 0:0:0:0:0:ffff:7bff:6fab
123.255.111.172 0:0:0:0:0:ffff:7bff:6fac
123.255.111.173 0:0:0:0:0:ffff:7bff:6fad
123.255.111.174 0:0:0:0:0:ffff:7bff:6fae
123.255.111.175 0:0:0:0:0:ffff:7bff:6faf
123.255.111.176 0:0:0:0:0:ffff:7bff:6fb0
123.255.111.177 0:0:0:0:0:ffff:7bff:6fb1
123.255.111.178 0:0:0:0:0:ffff:7bff:6fb2
123.255.111.179 0:0:0:0:0:ffff:7bff:6fb3
123.255.111.180 0:0:0:0:0:ffff:7bff:6fb4


123.255.111.181 0:0:0:0:0:ffff:7bff:6fb5
123.255.111.182 0:0:0:0:0:ffff:7bff:6fb6
123.255.111.183 0:0:0:0:0:ffff:7bff:6fb7
123.255.111.184 0:0:0:0:0:ffff:7bff:6fb8
123.255.111.185 0:0:0:0:0:ffff:7bff:6fb9
123.255.111.186 0:0:0:0:0:ffff:7bff:6fba
123.255.111.187 0:0:0:0:0:ffff:7bff:6fbb
123.255.111.188 0:0:0:0:0:ffff:7bff:6fbc
123.255.111.189 0:0:0:0:0:ffff:7bff:6fbd
123.255.111.190 0:0:0:0:0:ffff:7bff:6fbe
123.255.111.191 0:0:0:0:0:ffff:7bff:6fbf
123.255.111.192 0:0:0:0:0:ffff:7bff:6fc0
123.255.111.193 0:0:0:0:0:ffff:7bff:6fc1
123.255.111.194 0:0:0:0:0:ffff:7bff:6fc2
123.255.111.195 0:0:0:0:0:ffff:7bff:6fc3
123.255.111.196 0:0:0:0:0:ffff:7bff:6fc4
123.255.111.197 0:0:0:0:0:ffff:7bff:6fc5
123.255.111.198 0:0:0:0:0:ffff:7bff:6fc6
123.255.111.199 0:0:0:0:0:ffff:7bff:6fc7
123.255.111.200 0:0:0:0:0:ffff:7bff:6fc8
123.255.111.201 0:0:0:0:0:ffff:7bff:6fc9
123.255.111.202 0:0:0:0:0:ffff:7bff:6fca
123.255.111.203 0:0:0:0:0:ffff:7bff:6fcb
123.255.111.204 0:0:0:0:0:ffff:7bff:6fcc
123.255.111.205 0:0:0:0:0:ffff:7bff:6fcd
123.255.111.206 0:0:0:0:0:ffff:7bff:6fce
123.255.111.207 0:0:0:0:0:ffff:7bff:6fcf
123.255.111.208 0:0:0:0:0:ffff:7bff:6fd0
123.255.111.209 0:0:0:0:0:ffff:7bff:6fd1
123.255.111.210 0:0:0:0:0:ffff:7bff:6fd2
123.255.111.211 0:0:0:0:0:ffff:7bff:6fd3
123.255.111.212 0:0:0:0:0:ffff:7bff:6fd4
123.255.111.213 0:0:0:0:0:ffff:7bff:6fd5
123.255.111.214 0:0:0:0:0:ffff:7bff:6fd6
123.255.111.215 0:0:0:0:0:ffff:7bff:6fd7
123.255.111.216 0:0:0:0:0:ffff:7bff:6fd8
123.255.111.217 0:0:0:0:0:ffff:7bff:6fd9
123.255.111.218 0:0:0:0:0:ffff:7bff:6fda
123.255.111.219 0:0:0:0:0:ffff:7bff:6fdb
123.255.111.220 0:0:0:0:0:ffff:7bff:6fdc
123.255.111.221 0:0:0:0:0:ffff:7bff:6fdd
123.255.111.222 0:0:0:0:0:ffff:7bff:6fde
123.255.111.223 0:0:0:0:0:ffff:7bff:6fdf
123.255.111.224 0:0:0:0:0:ffff:7bff:6fe0
123.255.111.225 0:0:0:0:0:ffff:7bff:6fe1
123.255.111.226 0:0:0:0:0:ffff:7bff:6fe2
123.255.111.227 0:0:0:0:0:ffff:7bff:6fe3
123.255.111.228 0:0:0:0:0:ffff:7bff:6fe4
123.255.111.229 0:0:0:0:0:ffff:7bff:6fe5
123.255.111.230 0:0:0:0:0:ffff:7bff:6fe6
123.255.111.231 0:0:0:0:0:ffff:7bff:6fe7
123.255.111.232 0:0:0:0:0:ffff:7bff:6fe8
123.255.111.233 0:0:0:0:0:ffff:7bff:6fe9
123.255.111.234 0:0:0:0:0:ffff:7bff:6fea
123.255.111.235 0:0:0:0:0:ffff:7bff:6feb
123.255.111.236 0:0:0:0:0:ffff:7bff:6fec
123.255.111.237 0:0:0:0:0:ffff:7bff:6fed
123.255.111.238 0:0:0:0:0:ffff:7bff:6fee
123.255.111.239 0:0:0:0:0:ffff:7bff:6fef
123.255.111.240 0:0:0:0:0:ffff:7bff:6ff0
123.255.111.241 0:0:0:0:0:ffff:7bff:6ff1
123.255.111.242 0:0:0:0:0:ffff:7bff:6ff2
123.255.111.243 0:0:0:0:0:ffff:7bff:6ff3
123.255.111.244 0:0:0:0:0:ffff:7bff:6ff4
123.255.111.245 0:0:0:0:0:ffff:7bff:6ff5
123.255.111.246 0:0:0:0:0:ffff:7bff:6ff6
123.255.111.247 0:0:0:0:0:ffff:7bff:6ff7
123.255.111.248 0:0:0:0:0:ffff:7bff:6ff8
123.255.111.249 0:0:0:0:0:ffff:7bff:6ff9
123.255.111.250 0:0:0:0:0:ffff:7bff:6ffa
123.255.111.251 0:0:0:0:0:ffff:7bff:6ffb
123.255.111.252 0:0:0:0:0:ffff:7bff:6ffc
123.255.111.253 0:0:0:0:0:ffff:7bff:6ffd
123.255.111.254 0:0:0:0:0:ffff:7bff:6ffe
123.255.111.255 0:0:0:0:0:ffff:7bff:6fff


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.