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
170.255.123.1 0:0:0:0:0:ffff:aaff:7b01
170.255.123.2 0:0:0:0:0:ffff:aaff:7b02
170.255.123.3 0:0:0:0:0:ffff:aaff:7b03
170.255.123.4 0:0:0:0:0:ffff:aaff:7b04
170.255.123.5 0:0:0:0:0:ffff:aaff:7b05
170.255.123.6 0:0:0:0:0:ffff:aaff:7b06
170.255.123.7 0:0:0:0:0:ffff:aaff:7b07
170.255.123.8 0:0:0:0:0:ffff:aaff:7b08
170.255.123.9 0:0:0:0:0:ffff:aaff:7b09
170.255.123.10 0:0:0:0:0:ffff:aaff:7b0a
170.255.123.11 0:0:0:0:0:ffff:aaff:7b0b
170.255.123.12 0:0:0:0:0:ffff:aaff:7b0c
170.255.123.13 0:0:0:0:0:ffff:aaff:7b0d
170.255.123.14 0:0:0:0:0:ffff:aaff:7b0e
170.255.123.15 0:0:0:0:0:ffff:aaff:7b0f
170.255.123.16 0:0:0:0:0:ffff:aaff:7b10
170.255.123.17 0:0:0:0:0:ffff:aaff:7b11
170.255.123.18 0:0:0:0:0:ffff:aaff:7b12
170.255.123.19 0:0:0:0:0:ffff:aaff:7b13
170.255.123.20 0:0:0:0:0:ffff:aaff:7b14
170.255.123.21 0:0:0:0:0:ffff:aaff:7b15
170.255.123.22 0:0:0:0:0:ffff:aaff:7b16
170.255.123.23 0:0:0:0:0:ffff:aaff:7b17
170.255.123.24 0:0:0:0:0:ffff:aaff:7b18
170.255.123.25 0:0:0:0:0:ffff:aaff:7b19
170.255.123.26 0:0:0:0:0:ffff:aaff:7b1a
170.255.123.27 0:0:0:0:0:ffff:aaff:7b1b
170.255.123.28 0:0:0:0:0:ffff:aaff:7b1c
170.255.123.29 0:0:0:0:0:ffff:aaff:7b1d
170.255.123.30 0:0:0:0:0:ffff:aaff:7b1e
170.255.123.31 0:0:0:0:0:ffff:aaff:7b1f
170.255.123.32 0:0:0:0:0:ffff:aaff:7b20
170.255.123.33 0:0:0:0:0:ffff:aaff:7b21
170.255.123.34 0:0:0:0:0:ffff:aaff:7b22
170.255.123.35 0:0:0:0:0:ffff:aaff:7b23
170.255.123.36 0:0:0:0:0:ffff:aaff:7b24
170.255.123.37 0:0:0:0:0:ffff:aaff:7b25
170.255.123.38 0:0:0:0:0:ffff:aaff:7b26
170.255.123.39 0:0:0:0:0:ffff:aaff:7b27
170.255.123.40 0:0:0:0:0:ffff:aaff:7b28
170.255.123.41 0:0:0:0:0:ffff:aaff:7b29
170.255.123.42 0:0:0:0:0:ffff:aaff:7b2a
170.255.123.43 0:0:0:0:0:ffff:aaff:7b2b
170.255.123.44 0:0:0:0:0:ffff:aaff:7b2c
170.255.123.45 0:0:0:0:0:ffff:aaff:7b2d
170.255.123.46 0:0:0:0:0:ffff:aaff:7b2e
170.255.123.47 0:0:0:0:0:ffff:aaff:7b2f
170.255.123.48 0:0:0:0:0:ffff:aaff:7b30
170.255.123.49 0:0:0:0:0:ffff:aaff:7b31
170.255.123.50 0:0:0:0:0:ffff:aaff:7b32
170.255.123.51 0:0:0:0:0:ffff:aaff:7b33
170.255.123.52 0:0:0:0:0:ffff:aaff:7b34
170.255.123.53 0:0:0:0:0:ffff:aaff:7b35
170.255.123.54 0:0:0:0:0:ffff:aaff:7b36
170.255.123.55 0:0:0:0:0:ffff:aaff:7b37
170.255.123.56 0:0:0:0:0:ffff:aaff:7b38
170.255.123.57 0:0:0:0:0:ffff:aaff:7b39
170.255.123.58 0:0:0:0:0:ffff:aaff:7b3a
170.255.123.59 0:0:0:0:0:ffff:aaff:7b3b
170.255.123.60 0:0:0:0:0:ffff:aaff:7b3c


170.255.123.61 0:0:0:0:0:ffff:aaff:7b3d
170.255.123.62 0:0:0:0:0:ffff:aaff:7b3e
170.255.123.63 0:0:0:0:0:ffff:aaff:7b3f
170.255.123.64 0:0:0:0:0:ffff:aaff:7b40
170.255.123.65 0:0:0:0:0:ffff:aaff:7b41
170.255.123.66 0:0:0:0:0:ffff:aaff:7b42
170.255.123.67 0:0:0:0:0:ffff:aaff:7b43
170.255.123.68 0:0:0:0:0:ffff:aaff:7b44
170.255.123.69 0:0:0:0:0:ffff:aaff:7b45
170.255.123.70 0:0:0:0:0:ffff:aaff:7b46
170.255.123.71 0:0:0:0:0:ffff:aaff:7b47
170.255.123.72 0:0:0:0:0:ffff:aaff:7b48
170.255.123.73 0:0:0:0:0:ffff:aaff:7b49
170.255.123.74 0:0:0:0:0:ffff:aaff:7b4a
170.255.123.75 0:0:0:0:0:ffff:aaff:7b4b
170.255.123.76 0:0:0:0:0:ffff:aaff:7b4c
170.255.123.77 0:0:0:0:0:ffff:aaff:7b4d
170.255.123.78 0:0:0:0:0:ffff:aaff:7b4e
170.255.123.79 0:0:0:0:0:ffff:aaff:7b4f
170.255.123.80 0:0:0:0:0:ffff:aaff:7b50
170.255.123.81 0:0:0:0:0:ffff:aaff:7b51
170.255.123.82 0:0:0:0:0:ffff:aaff:7b52
170.255.123.83 0:0:0:0:0:ffff:aaff:7b53
170.255.123.84 0:0:0:0:0:ffff:aaff:7b54
170.255.123.85 0:0:0:0:0:ffff:aaff:7b55
170.255.123.86 0:0:0:0:0:ffff:aaff:7b56
170.255.123.87 0:0:0:0:0:ffff:aaff:7b57
170.255.123.88 0:0:0:0:0:ffff:aaff:7b58
170.255.123.89 0:0:0:0:0:ffff:aaff:7b59
170.255.123.90 0:0:0:0:0:ffff:aaff:7b5a
170.255.123.91 0:0:0:0:0:ffff:aaff:7b5b
170.255.123.92 0:0:0:0:0:ffff:aaff:7b5c
170.255.123.93 0:0:0:0:0:ffff:aaff:7b5d
170.255.123.94 0:0:0:0:0:ffff:aaff:7b5e
170.255.123.95 0:0:0:0:0:ffff:aaff:7b5f
170.255.123.96 0:0:0:0:0:ffff:aaff:7b60
170.255.123.97 0:0:0:0:0:ffff:aaff:7b61
170.255.123.98 0:0:0:0:0:ffff:aaff:7b62
170.255.123.99 0:0:0:0:0:ffff:aaff:7b63
170.255.123.100 0:0:0:0:0:ffff:aaff:7b64
170.255.123.101 0:0:0:0:0:ffff:aaff:7b65
170.255.123.102 0:0:0:0:0:ffff:aaff:7b66
170.255.123.103 0:0:0:0:0:ffff:aaff:7b67
170.255.123.104 0:0:0:0:0:ffff:aaff:7b68
170.255.123.105 0:0:0:0:0:ffff:aaff:7b69
170.255.123.106 0:0:0:0:0:ffff:aaff:7b6a
170.255.123.107 0:0:0:0:0:ffff:aaff:7b6b
170.255.123.108 0:0:0:0:0:ffff:aaff:7b6c
170.255.123.109 0:0:0:0:0:ffff:aaff:7b6d
170.255.123.110 0:0:0:0:0:ffff:aaff:7b6e
170.255.123.111 0:0:0:0:0:ffff:aaff:7b6f
170.255.123.112 0:0:0:0:0:ffff:aaff:7b70
170.255.123.113 0:0:0:0:0:ffff:aaff:7b71
170.255.123.114 0:0:0:0:0:ffff:aaff:7b72
170.255.123.115 0:0:0:0:0:ffff:aaff:7b73
170.255.123.116 0:0:0:0:0:ffff:aaff:7b74
170.255.123.117 0:0:0:0:0:ffff:aaff:7b75
170.255.123.118 0:0:0:0:0:ffff:aaff:7b76
170.255.123.119 0:0:0:0:0:ffff:aaff:7b77
170.255.123.120 0:0:0:0:0:ffff:aaff:7b78


170.255.123.121 0:0:0:0:0:ffff:aaff:7b79
170.255.123.122 0:0:0:0:0:ffff:aaff:7b7a
170.255.123.123 0:0:0:0:0:ffff:aaff:7b7b
170.255.123.124 0:0:0:0:0:ffff:aaff:7b7c
170.255.123.125 0:0:0:0:0:ffff:aaff:7b7d
170.255.123.126 0:0:0:0:0:ffff:aaff:7b7e
170.255.123.127 0:0:0:0:0:ffff:aaff:7b7f
170.255.123.128 0:0:0:0:0:ffff:aaff:7b80
170.255.123.129 0:0:0:0:0:ffff:aaff:7b81
170.255.123.130 0:0:0:0:0:ffff:aaff:7b82
170.255.123.131 0:0:0:0:0:ffff:aaff:7b83
170.255.123.132 0:0:0:0:0:ffff:aaff:7b84
170.255.123.133 0:0:0:0:0:ffff:aaff:7b85
170.255.123.134 0:0:0:0:0:ffff:aaff:7b86
170.255.123.135 0:0:0:0:0:ffff:aaff:7b87
170.255.123.136 0:0:0:0:0:ffff:aaff:7b88
170.255.123.137 0:0:0:0:0:ffff:aaff:7b89
170.255.123.138 0:0:0:0:0:ffff:aaff:7b8a
170.255.123.139 0:0:0:0:0:ffff:aaff:7b8b
170.255.123.140 0:0:0:0:0:ffff:aaff:7b8c
170.255.123.141 0:0:0:0:0:ffff:aaff:7b8d
170.255.123.142 0:0:0:0:0:ffff:aaff:7b8e
170.255.123.143 0:0:0:0:0:ffff:aaff:7b8f
170.255.123.144 0:0:0:0:0:ffff:aaff:7b90
170.255.123.145 0:0:0:0:0:ffff:aaff:7b91
170.255.123.146 0:0:0:0:0:ffff:aaff:7b92
170.255.123.147 0:0:0:0:0:ffff:aaff:7b93
170.255.123.148 0:0:0:0:0:ffff:aaff:7b94
170.255.123.149 0:0:0:0:0:ffff:aaff:7b95
170.255.123.150 0:0:0:0:0:ffff:aaff:7b96
170.255.123.151 0:0:0:0:0:ffff:aaff:7b97
170.255.123.152 0:0:0:0:0:ffff:aaff:7b98
170.255.123.153 0:0:0:0:0:ffff:aaff:7b99
170.255.123.154 0:0:0:0:0:ffff:aaff:7b9a
170.255.123.155 0:0:0:0:0:ffff:aaff:7b9b
170.255.123.156 0:0:0:0:0:ffff:aaff:7b9c
170.255.123.157 0:0:0:0:0:ffff:aaff:7b9d
170.255.123.158 0:0:0:0:0:ffff:aaff:7b9e
170.255.123.159 0:0:0:0:0:ffff:aaff:7b9f
170.255.123.160 0:0:0:0:0:ffff:aaff:7ba0
170.255.123.161 0:0:0:0:0:ffff:aaff:7ba1
170.255.123.162 0:0:0:0:0:ffff:aaff:7ba2
170.255.123.163 0:0:0:0:0:ffff:aaff:7ba3
170.255.123.164 0:0:0:0:0:ffff:aaff:7ba4
170.255.123.165 0:0:0:0:0:ffff:aaff:7ba5
170.255.123.166 0:0:0:0:0:ffff:aaff:7ba6
170.255.123.167 0:0:0:0:0:ffff:aaff:7ba7
170.255.123.168 0:0:0:0:0:ffff:aaff:7ba8
170.255.123.169 0:0:0:0:0:ffff:aaff:7ba9
170.255.123.170 0:0:0:0:0:ffff:aaff:7baa
170.255.123.171 0:0:0:0:0:ffff:aaff:7bab
170.255.123.172 0:0:0:0:0:ffff:aaff:7bac
170.255.123.173 0:0:0:0:0:ffff:aaff:7bad
170.255.123.174 0:0:0:0:0:ffff:aaff:7bae
170.255.123.175 0:0:0:0:0:ffff:aaff:7baf
170.255.123.176 0:0:0:0:0:ffff:aaff:7bb0
170.255.123.177 0:0:0:0:0:ffff:aaff:7bb1
170.255.123.178 0:0:0:0:0:ffff:aaff:7bb2
170.255.123.179 0:0:0:0:0:ffff:aaff:7bb3
170.255.123.180 0:0:0:0:0:ffff:aaff:7bb4


170.255.123.181 0:0:0:0:0:ffff:aaff:7bb5
170.255.123.182 0:0:0:0:0:ffff:aaff:7bb6
170.255.123.183 0:0:0:0:0:ffff:aaff:7bb7
170.255.123.184 0:0:0:0:0:ffff:aaff:7bb8
170.255.123.185 0:0:0:0:0:ffff:aaff:7bb9
170.255.123.186 0:0:0:0:0:ffff:aaff:7bba
170.255.123.187 0:0:0:0:0:ffff:aaff:7bbb
170.255.123.188 0:0:0:0:0:ffff:aaff:7bbc
170.255.123.189 0:0:0:0:0:ffff:aaff:7bbd
170.255.123.190 0:0:0:0:0:ffff:aaff:7bbe
170.255.123.191 0:0:0:0:0:ffff:aaff:7bbf
170.255.123.192 0:0:0:0:0:ffff:aaff:7bc0
170.255.123.193 0:0:0:0:0:ffff:aaff:7bc1
170.255.123.194 0:0:0:0:0:ffff:aaff:7bc2
170.255.123.195 0:0:0:0:0:ffff:aaff:7bc3
170.255.123.196 0:0:0:0:0:ffff:aaff:7bc4
170.255.123.197 0:0:0:0:0:ffff:aaff:7bc5
170.255.123.198 0:0:0:0:0:ffff:aaff:7bc6
170.255.123.199 0:0:0:0:0:ffff:aaff:7bc7
170.255.123.200 0:0:0:0:0:ffff:aaff:7bc8
170.255.123.201 0:0:0:0:0:ffff:aaff:7bc9
170.255.123.202 0:0:0:0:0:ffff:aaff:7bca
170.255.123.203 0:0:0:0:0:ffff:aaff:7bcb
170.255.123.204 0:0:0:0:0:ffff:aaff:7bcc
170.255.123.205 0:0:0:0:0:ffff:aaff:7bcd
170.255.123.206 0:0:0:0:0:ffff:aaff:7bce
170.255.123.207 0:0:0:0:0:ffff:aaff:7bcf
170.255.123.208 0:0:0:0:0:ffff:aaff:7bd0
170.255.123.209 0:0:0:0:0:ffff:aaff:7bd1
170.255.123.210 0:0:0:0:0:ffff:aaff:7bd2
170.255.123.211 0:0:0:0:0:ffff:aaff:7bd3
170.255.123.212 0:0:0:0:0:ffff:aaff:7bd4
170.255.123.213 0:0:0:0:0:ffff:aaff:7bd5
170.255.123.214 0:0:0:0:0:ffff:aaff:7bd6
170.255.123.215 0:0:0:0:0:ffff:aaff:7bd7
170.255.123.216 0:0:0:0:0:ffff:aaff:7bd8
170.255.123.217 0:0:0:0:0:ffff:aaff:7bd9
170.255.123.218 0:0:0:0:0:ffff:aaff:7bda
170.255.123.219 0:0:0:0:0:ffff:aaff:7bdb
170.255.123.220 0:0:0:0:0:ffff:aaff:7bdc
170.255.123.221 0:0:0:0:0:ffff:aaff:7bdd
170.255.123.222 0:0:0:0:0:ffff:aaff:7bde
170.255.123.223 0:0:0:0:0:ffff:aaff:7bdf
170.255.123.224 0:0:0:0:0:ffff:aaff:7be0
170.255.123.225 0:0:0:0:0:ffff:aaff:7be1
170.255.123.226 0:0:0:0:0:ffff:aaff:7be2
170.255.123.227 0:0:0:0:0:ffff:aaff:7be3
170.255.123.228 0:0:0:0:0:ffff:aaff:7be4
170.255.123.229 0:0:0:0:0:ffff:aaff:7be5
170.255.123.230 0:0:0:0:0:ffff:aaff:7be6
170.255.123.231 0:0:0:0:0:ffff:aaff:7be7
170.255.123.232 0:0:0:0:0:ffff:aaff:7be8
170.255.123.233 0:0:0:0:0:ffff:aaff:7be9
170.255.123.234 0:0:0:0:0:ffff:aaff:7bea
170.255.123.235 0:0:0:0:0:ffff:aaff:7beb
170.255.123.236 0:0:0:0:0:ffff:aaff:7bec
170.255.123.237 0:0:0:0:0:ffff:aaff:7bed
170.255.123.238 0:0:0:0:0:ffff:aaff:7bee
170.255.123.239 0:0:0:0:0:ffff:aaff:7bef
170.255.123.240 0:0:0:0:0:ffff:aaff:7bf0
170.255.123.241 0:0:0:0:0:ffff:aaff:7bf1
170.255.123.242 0:0:0:0:0:ffff:aaff:7bf2
170.255.123.243 0:0:0:0:0:ffff:aaff:7bf3
170.255.123.244 0:0:0:0:0:ffff:aaff:7bf4
170.255.123.245 0:0:0:0:0:ffff:aaff:7bf5
170.255.123.246 0:0:0:0:0:ffff:aaff:7bf6
170.255.123.247 0:0:0:0:0:ffff:aaff:7bf7
170.255.123.248 0:0:0:0:0:ffff:aaff:7bf8
170.255.123.249 0:0:0:0:0:ffff:aaff:7bf9
170.255.123.250 0:0:0:0:0:ffff:aaff:7bfa
170.255.123.251 0:0:0:0:0:ffff:aaff:7bfb
170.255.123.252 0:0:0:0:0:ffff:aaff:7bfc
170.255.123.253 0:0:0:0:0:ffff:aaff:7bfd
170.255.123.254 0:0:0:0:0:ffff:aaff:7bfe
170.255.123.255 0:0:0:0:0:ffff:aaff: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.