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
255.111.123.1 0:0:0:0:0:ffff:ff6f:7b01
255.111.123.2 0:0:0:0:0:ffff:ff6f:7b02
255.111.123.3 0:0:0:0:0:ffff:ff6f:7b03
255.111.123.4 0:0:0:0:0:ffff:ff6f:7b04
255.111.123.5 0:0:0:0:0:ffff:ff6f:7b05
255.111.123.6 0:0:0:0:0:ffff:ff6f:7b06
255.111.123.7 0:0:0:0:0:ffff:ff6f:7b07
255.111.123.8 0:0:0:0:0:ffff:ff6f:7b08
255.111.123.9 0:0:0:0:0:ffff:ff6f:7b09
255.111.123.10 0:0:0:0:0:ffff:ff6f:7b0a
255.111.123.11 0:0:0:0:0:ffff:ff6f:7b0b
255.111.123.12 0:0:0:0:0:ffff:ff6f:7b0c
255.111.123.13 0:0:0:0:0:ffff:ff6f:7b0d
255.111.123.14 0:0:0:0:0:ffff:ff6f:7b0e
255.111.123.15 0:0:0:0:0:ffff:ff6f:7b0f
255.111.123.16 0:0:0:0:0:ffff:ff6f:7b10
255.111.123.17 0:0:0:0:0:ffff:ff6f:7b11
255.111.123.18 0:0:0:0:0:ffff:ff6f:7b12
255.111.123.19 0:0:0:0:0:ffff:ff6f:7b13
255.111.123.20 0:0:0:0:0:ffff:ff6f:7b14
255.111.123.21 0:0:0:0:0:ffff:ff6f:7b15
255.111.123.22 0:0:0:0:0:ffff:ff6f:7b16
255.111.123.23 0:0:0:0:0:ffff:ff6f:7b17
255.111.123.24 0:0:0:0:0:ffff:ff6f:7b18
255.111.123.25 0:0:0:0:0:ffff:ff6f:7b19
255.111.123.26 0:0:0:0:0:ffff:ff6f:7b1a
255.111.123.27 0:0:0:0:0:ffff:ff6f:7b1b
255.111.123.28 0:0:0:0:0:ffff:ff6f:7b1c
255.111.123.29 0:0:0:0:0:ffff:ff6f:7b1d
255.111.123.30 0:0:0:0:0:ffff:ff6f:7b1e
255.111.123.31 0:0:0:0:0:ffff:ff6f:7b1f
255.111.123.32 0:0:0:0:0:ffff:ff6f:7b20
255.111.123.33 0:0:0:0:0:ffff:ff6f:7b21
255.111.123.34 0:0:0:0:0:ffff:ff6f:7b22
255.111.123.35 0:0:0:0:0:ffff:ff6f:7b23
255.111.123.36 0:0:0:0:0:ffff:ff6f:7b24
255.111.123.37 0:0:0:0:0:ffff:ff6f:7b25
255.111.123.38 0:0:0:0:0:ffff:ff6f:7b26
255.111.123.39 0:0:0:0:0:ffff:ff6f:7b27
255.111.123.40 0:0:0:0:0:ffff:ff6f:7b28
255.111.123.41 0:0:0:0:0:ffff:ff6f:7b29
255.111.123.42 0:0:0:0:0:ffff:ff6f:7b2a
255.111.123.43 0:0:0:0:0:ffff:ff6f:7b2b
255.111.123.44 0:0:0:0:0:ffff:ff6f:7b2c
255.111.123.45 0:0:0:0:0:ffff:ff6f:7b2d
255.111.123.46 0:0:0:0:0:ffff:ff6f:7b2e
255.111.123.47 0:0:0:0:0:ffff:ff6f:7b2f
255.111.123.48 0:0:0:0:0:ffff:ff6f:7b30
255.111.123.49 0:0:0:0:0:ffff:ff6f:7b31
255.111.123.50 0:0:0:0:0:ffff:ff6f:7b32
255.111.123.51 0:0:0:0:0:ffff:ff6f:7b33
255.111.123.52 0:0:0:0:0:ffff:ff6f:7b34
255.111.123.53 0:0:0:0:0:ffff:ff6f:7b35
255.111.123.54 0:0:0:0:0:ffff:ff6f:7b36
255.111.123.55 0:0:0:0:0:ffff:ff6f:7b37
255.111.123.56 0:0:0:0:0:ffff:ff6f:7b38
255.111.123.57 0:0:0:0:0:ffff:ff6f:7b39
255.111.123.58 0:0:0:0:0:ffff:ff6f:7b3a
255.111.123.59 0:0:0:0:0:ffff:ff6f:7b3b
255.111.123.60 0:0:0:0:0:ffff:ff6f:7b3c


255.111.123.61 0:0:0:0:0:ffff:ff6f:7b3d
255.111.123.62 0:0:0:0:0:ffff:ff6f:7b3e
255.111.123.63 0:0:0:0:0:ffff:ff6f:7b3f
255.111.123.64 0:0:0:0:0:ffff:ff6f:7b40
255.111.123.65 0:0:0:0:0:ffff:ff6f:7b41
255.111.123.66 0:0:0:0:0:ffff:ff6f:7b42
255.111.123.67 0:0:0:0:0:ffff:ff6f:7b43
255.111.123.68 0:0:0:0:0:ffff:ff6f:7b44
255.111.123.69 0:0:0:0:0:ffff:ff6f:7b45
255.111.123.70 0:0:0:0:0:ffff:ff6f:7b46
255.111.123.71 0:0:0:0:0:ffff:ff6f:7b47
255.111.123.72 0:0:0:0:0:ffff:ff6f:7b48
255.111.123.73 0:0:0:0:0:ffff:ff6f:7b49
255.111.123.74 0:0:0:0:0:ffff:ff6f:7b4a
255.111.123.75 0:0:0:0:0:ffff:ff6f:7b4b
255.111.123.76 0:0:0:0:0:ffff:ff6f:7b4c
255.111.123.77 0:0:0:0:0:ffff:ff6f:7b4d
255.111.123.78 0:0:0:0:0:ffff:ff6f:7b4e
255.111.123.79 0:0:0:0:0:ffff:ff6f:7b4f
255.111.123.80 0:0:0:0:0:ffff:ff6f:7b50
255.111.123.81 0:0:0:0:0:ffff:ff6f:7b51
255.111.123.82 0:0:0:0:0:ffff:ff6f:7b52
255.111.123.83 0:0:0:0:0:ffff:ff6f:7b53
255.111.123.84 0:0:0:0:0:ffff:ff6f:7b54
255.111.123.85 0:0:0:0:0:ffff:ff6f:7b55
255.111.123.86 0:0:0:0:0:ffff:ff6f:7b56
255.111.123.87 0:0:0:0:0:ffff:ff6f:7b57
255.111.123.88 0:0:0:0:0:ffff:ff6f:7b58
255.111.123.89 0:0:0:0:0:ffff:ff6f:7b59
255.111.123.90 0:0:0:0:0:ffff:ff6f:7b5a
255.111.123.91 0:0:0:0:0:ffff:ff6f:7b5b
255.111.123.92 0:0:0:0:0:ffff:ff6f:7b5c
255.111.123.93 0:0:0:0:0:ffff:ff6f:7b5d
255.111.123.94 0:0:0:0:0:ffff:ff6f:7b5e
255.111.123.95 0:0:0:0:0:ffff:ff6f:7b5f
255.111.123.96 0:0:0:0:0:ffff:ff6f:7b60
255.111.123.97 0:0:0:0:0:ffff:ff6f:7b61
255.111.123.98 0:0:0:0:0:ffff:ff6f:7b62
255.111.123.99 0:0:0:0:0:ffff:ff6f:7b63
255.111.123.100 0:0:0:0:0:ffff:ff6f:7b64
255.111.123.101 0:0:0:0:0:ffff:ff6f:7b65
255.111.123.102 0:0:0:0:0:ffff:ff6f:7b66
255.111.123.103 0:0:0:0:0:ffff:ff6f:7b67
255.111.123.104 0:0:0:0:0:ffff:ff6f:7b68
255.111.123.105 0:0:0:0:0:ffff:ff6f:7b69
255.111.123.106 0:0:0:0:0:ffff:ff6f:7b6a
255.111.123.107 0:0:0:0:0:ffff:ff6f:7b6b
255.111.123.108 0:0:0:0:0:ffff:ff6f:7b6c
255.111.123.109 0:0:0:0:0:ffff:ff6f:7b6d
255.111.123.110 0:0:0:0:0:ffff:ff6f:7b6e
255.111.123.111 0:0:0:0:0:ffff:ff6f:7b6f
255.111.123.112 0:0:0:0:0:ffff:ff6f:7b70
255.111.123.113 0:0:0:0:0:ffff:ff6f:7b71
255.111.123.114 0:0:0:0:0:ffff:ff6f:7b72
255.111.123.115 0:0:0:0:0:ffff:ff6f:7b73
255.111.123.116 0:0:0:0:0:ffff:ff6f:7b74
255.111.123.117 0:0:0:0:0:ffff:ff6f:7b75
255.111.123.118 0:0:0:0:0:ffff:ff6f:7b76
255.111.123.119 0:0:0:0:0:ffff:ff6f:7b77
255.111.123.120 0:0:0:0:0:ffff:ff6f:7b78


255.111.123.121 0:0:0:0:0:ffff:ff6f:7b79
255.111.123.122 0:0:0:0:0:ffff:ff6f:7b7a
255.111.123.123 0:0:0:0:0:ffff:ff6f:7b7b
255.111.123.124 0:0:0:0:0:ffff:ff6f:7b7c
255.111.123.125 0:0:0:0:0:ffff:ff6f:7b7d
255.111.123.126 0:0:0:0:0:ffff:ff6f:7b7e
255.111.123.127 0:0:0:0:0:ffff:ff6f:7b7f
255.111.123.128 0:0:0:0:0:ffff:ff6f:7b80
255.111.123.129 0:0:0:0:0:ffff:ff6f:7b81
255.111.123.130 0:0:0:0:0:ffff:ff6f:7b82
255.111.123.131 0:0:0:0:0:ffff:ff6f:7b83
255.111.123.132 0:0:0:0:0:ffff:ff6f:7b84
255.111.123.133 0:0:0:0:0:ffff:ff6f:7b85
255.111.123.134 0:0:0:0:0:ffff:ff6f:7b86
255.111.123.135 0:0:0:0:0:ffff:ff6f:7b87
255.111.123.136 0:0:0:0:0:ffff:ff6f:7b88
255.111.123.137 0:0:0:0:0:ffff:ff6f:7b89
255.111.123.138 0:0:0:0:0:ffff:ff6f:7b8a
255.111.123.139 0:0:0:0:0:ffff:ff6f:7b8b
255.111.123.140 0:0:0:0:0:ffff:ff6f:7b8c
255.111.123.141 0:0:0:0:0:ffff:ff6f:7b8d
255.111.123.142 0:0:0:0:0:ffff:ff6f:7b8e
255.111.123.143 0:0:0:0:0:ffff:ff6f:7b8f
255.111.123.144 0:0:0:0:0:ffff:ff6f:7b90
255.111.123.145 0:0:0:0:0:ffff:ff6f:7b91
255.111.123.146 0:0:0:0:0:ffff:ff6f:7b92
255.111.123.147 0:0:0:0:0:ffff:ff6f:7b93
255.111.123.148 0:0:0:0:0:ffff:ff6f:7b94
255.111.123.149 0:0:0:0:0:ffff:ff6f:7b95
255.111.123.150 0:0:0:0:0:ffff:ff6f:7b96
255.111.123.151 0:0:0:0:0:ffff:ff6f:7b97
255.111.123.152 0:0:0:0:0:ffff:ff6f:7b98
255.111.123.153 0:0:0:0:0:ffff:ff6f:7b99
255.111.123.154 0:0:0:0:0:ffff:ff6f:7b9a
255.111.123.155 0:0:0:0:0:ffff:ff6f:7b9b
255.111.123.156 0:0:0:0:0:ffff:ff6f:7b9c
255.111.123.157 0:0:0:0:0:ffff:ff6f:7b9d
255.111.123.158 0:0:0:0:0:ffff:ff6f:7b9e
255.111.123.159 0:0:0:0:0:ffff:ff6f:7b9f
255.111.123.160 0:0:0:0:0:ffff:ff6f:7ba0
255.111.123.161 0:0:0:0:0:ffff:ff6f:7ba1
255.111.123.162 0:0:0:0:0:ffff:ff6f:7ba2
255.111.123.163 0:0:0:0:0:ffff:ff6f:7ba3
255.111.123.164 0:0:0:0:0:ffff:ff6f:7ba4
255.111.123.165 0:0:0:0:0:ffff:ff6f:7ba5
255.111.123.166 0:0:0:0:0:ffff:ff6f:7ba6
255.111.123.167 0:0:0:0:0:ffff:ff6f:7ba7
255.111.123.168 0:0:0:0:0:ffff:ff6f:7ba8
255.111.123.169 0:0:0:0:0:ffff:ff6f:7ba9
255.111.123.170 0:0:0:0:0:ffff:ff6f:7baa
255.111.123.171 0:0:0:0:0:ffff:ff6f:7bab
255.111.123.172 0:0:0:0:0:ffff:ff6f:7bac
255.111.123.173 0:0:0:0:0:ffff:ff6f:7bad
255.111.123.174 0:0:0:0:0:ffff:ff6f:7bae
255.111.123.175 0:0:0:0:0:ffff:ff6f:7baf
255.111.123.176 0:0:0:0:0:ffff:ff6f:7bb0
255.111.123.177 0:0:0:0:0:ffff:ff6f:7bb1
255.111.123.178 0:0:0:0:0:ffff:ff6f:7bb2
255.111.123.179 0:0:0:0:0:ffff:ff6f:7bb3
255.111.123.180 0:0:0:0:0:ffff:ff6f:7bb4


255.111.123.181 0:0:0:0:0:ffff:ff6f:7bb5
255.111.123.182 0:0:0:0:0:ffff:ff6f:7bb6
255.111.123.183 0:0:0:0:0:ffff:ff6f:7bb7
255.111.123.184 0:0:0:0:0:ffff:ff6f:7bb8
255.111.123.185 0:0:0:0:0:ffff:ff6f:7bb9
255.111.123.186 0:0:0:0:0:ffff:ff6f:7bba
255.111.123.187 0:0:0:0:0:ffff:ff6f:7bbb
255.111.123.188 0:0:0:0:0:ffff:ff6f:7bbc
255.111.123.189 0:0:0:0:0:ffff:ff6f:7bbd
255.111.123.190 0:0:0:0:0:ffff:ff6f:7bbe
255.111.123.191 0:0:0:0:0:ffff:ff6f:7bbf
255.111.123.192 0:0:0:0:0:ffff:ff6f:7bc0
255.111.123.193 0:0:0:0:0:ffff:ff6f:7bc1
255.111.123.194 0:0:0:0:0:ffff:ff6f:7bc2
255.111.123.195 0:0:0:0:0:ffff:ff6f:7bc3
255.111.123.196 0:0:0:0:0:ffff:ff6f:7bc4
255.111.123.197 0:0:0:0:0:ffff:ff6f:7bc5
255.111.123.198 0:0:0:0:0:ffff:ff6f:7bc6
255.111.123.199 0:0:0:0:0:ffff:ff6f:7bc7
255.111.123.200 0:0:0:0:0:ffff:ff6f:7bc8
255.111.123.201 0:0:0:0:0:ffff:ff6f:7bc9
255.111.123.202 0:0:0:0:0:ffff:ff6f:7bca
255.111.123.203 0:0:0:0:0:ffff:ff6f:7bcb
255.111.123.204 0:0:0:0:0:ffff:ff6f:7bcc
255.111.123.205 0:0:0:0:0:ffff:ff6f:7bcd
255.111.123.206 0:0:0:0:0:ffff:ff6f:7bce
255.111.123.207 0:0:0:0:0:ffff:ff6f:7bcf
255.111.123.208 0:0:0:0:0:ffff:ff6f:7bd0
255.111.123.209 0:0:0:0:0:ffff:ff6f:7bd1
255.111.123.210 0:0:0:0:0:ffff:ff6f:7bd2
255.111.123.211 0:0:0:0:0:ffff:ff6f:7bd3
255.111.123.212 0:0:0:0:0:ffff:ff6f:7bd4
255.111.123.213 0:0:0:0:0:ffff:ff6f:7bd5
255.111.123.214 0:0:0:0:0:ffff:ff6f:7bd6
255.111.123.215 0:0:0:0:0:ffff:ff6f:7bd7
255.111.123.216 0:0:0:0:0:ffff:ff6f:7bd8
255.111.123.217 0:0:0:0:0:ffff:ff6f:7bd9
255.111.123.218 0:0:0:0:0:ffff:ff6f:7bda
255.111.123.219 0:0:0:0:0:ffff:ff6f:7bdb
255.111.123.220 0:0:0:0:0:ffff:ff6f:7bdc
255.111.123.221 0:0:0:0:0:ffff:ff6f:7bdd
255.111.123.222 0:0:0:0:0:ffff:ff6f:7bde
255.111.123.223 0:0:0:0:0:ffff:ff6f:7bdf
255.111.123.224 0:0:0:0:0:ffff:ff6f:7be0
255.111.123.225 0:0:0:0:0:ffff:ff6f:7be1
255.111.123.226 0:0:0:0:0:ffff:ff6f:7be2
255.111.123.227 0:0:0:0:0:ffff:ff6f:7be3
255.111.123.228 0:0:0:0:0:ffff:ff6f:7be4
255.111.123.229 0:0:0:0:0:ffff:ff6f:7be5
255.111.123.230 0:0:0:0:0:ffff:ff6f:7be6
255.111.123.231 0:0:0:0:0:ffff:ff6f:7be7
255.111.123.232 0:0:0:0:0:ffff:ff6f:7be8
255.111.123.233 0:0:0:0:0:ffff:ff6f:7be9
255.111.123.234 0:0:0:0:0:ffff:ff6f:7bea
255.111.123.235 0:0:0:0:0:ffff:ff6f:7beb
255.111.123.236 0:0:0:0:0:ffff:ff6f:7bec
255.111.123.237 0:0:0:0:0:ffff:ff6f:7bed
255.111.123.238 0:0:0:0:0:ffff:ff6f:7bee
255.111.123.239 0:0:0:0:0:ffff:ff6f:7bef
255.111.123.240 0:0:0:0:0:ffff:ff6f:7bf0
255.111.123.241 0:0:0:0:0:ffff:ff6f:7bf1
255.111.123.242 0:0:0:0:0:ffff:ff6f:7bf2
255.111.123.243 0:0:0:0:0:ffff:ff6f:7bf3
255.111.123.244 0:0:0:0:0:ffff:ff6f:7bf4
255.111.123.245 0:0:0:0:0:ffff:ff6f:7bf5
255.111.123.246 0:0:0:0:0:ffff:ff6f:7bf6
255.111.123.247 0:0:0:0:0:ffff:ff6f:7bf7
255.111.123.248 0:0:0:0:0:ffff:ff6f:7bf8
255.111.123.249 0:0:0:0:0:ffff:ff6f:7bf9
255.111.123.250 0:0:0:0:0:ffff:ff6f:7bfa
255.111.123.251 0:0:0:0:0:ffff:ff6f:7bfb
255.111.123.252 0:0:0:0:0:ffff:ff6f:7bfc
255.111.123.253 0:0:0:0:0:ffff:ff6f:7bfd
255.111.123.254 0:0:0:0:0:ffff:ff6f:7bfe
255.111.123.255 0:0:0:0:0:ffff:ff6f:7bff


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.