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
166.90.123.1 0:0:0:0:0:ffff:a65a:7b01
166.90.123.2 0:0:0:0:0:ffff:a65a:7b02
166.90.123.3 0:0:0:0:0:ffff:a65a:7b03
166.90.123.4 0:0:0:0:0:ffff:a65a:7b04
166.90.123.5 0:0:0:0:0:ffff:a65a:7b05
166.90.123.6 0:0:0:0:0:ffff:a65a:7b06
166.90.123.7 0:0:0:0:0:ffff:a65a:7b07
166.90.123.8 0:0:0:0:0:ffff:a65a:7b08
166.90.123.9 0:0:0:0:0:ffff:a65a:7b09
166.90.123.10 0:0:0:0:0:ffff:a65a:7b0a
166.90.123.11 0:0:0:0:0:ffff:a65a:7b0b
166.90.123.12 0:0:0:0:0:ffff:a65a:7b0c
166.90.123.13 0:0:0:0:0:ffff:a65a:7b0d
166.90.123.14 0:0:0:0:0:ffff:a65a:7b0e
166.90.123.15 0:0:0:0:0:ffff:a65a:7b0f
166.90.123.16 0:0:0:0:0:ffff:a65a:7b10
166.90.123.17 0:0:0:0:0:ffff:a65a:7b11
166.90.123.18 0:0:0:0:0:ffff:a65a:7b12
166.90.123.19 0:0:0:0:0:ffff:a65a:7b13
166.90.123.20 0:0:0:0:0:ffff:a65a:7b14
166.90.123.21 0:0:0:0:0:ffff:a65a:7b15
166.90.123.22 0:0:0:0:0:ffff:a65a:7b16
166.90.123.23 0:0:0:0:0:ffff:a65a:7b17
166.90.123.24 0:0:0:0:0:ffff:a65a:7b18
166.90.123.25 0:0:0:0:0:ffff:a65a:7b19
166.90.123.26 0:0:0:0:0:ffff:a65a:7b1a
166.90.123.27 0:0:0:0:0:ffff:a65a:7b1b
166.90.123.28 0:0:0:0:0:ffff:a65a:7b1c
166.90.123.29 0:0:0:0:0:ffff:a65a:7b1d
166.90.123.30 0:0:0:0:0:ffff:a65a:7b1e
166.90.123.31 0:0:0:0:0:ffff:a65a:7b1f
166.90.123.32 0:0:0:0:0:ffff:a65a:7b20
166.90.123.33 0:0:0:0:0:ffff:a65a:7b21
166.90.123.34 0:0:0:0:0:ffff:a65a:7b22
166.90.123.35 0:0:0:0:0:ffff:a65a:7b23
166.90.123.36 0:0:0:0:0:ffff:a65a:7b24
166.90.123.37 0:0:0:0:0:ffff:a65a:7b25
166.90.123.38 0:0:0:0:0:ffff:a65a:7b26
166.90.123.39 0:0:0:0:0:ffff:a65a:7b27
166.90.123.40 0:0:0:0:0:ffff:a65a:7b28
166.90.123.41 0:0:0:0:0:ffff:a65a:7b29
166.90.123.42 0:0:0:0:0:ffff:a65a:7b2a
166.90.123.43 0:0:0:0:0:ffff:a65a:7b2b
166.90.123.44 0:0:0:0:0:ffff:a65a:7b2c
166.90.123.45 0:0:0:0:0:ffff:a65a:7b2d
166.90.123.46 0:0:0:0:0:ffff:a65a:7b2e
166.90.123.47 0:0:0:0:0:ffff:a65a:7b2f
166.90.123.48 0:0:0:0:0:ffff:a65a:7b30
166.90.123.49 0:0:0:0:0:ffff:a65a:7b31
166.90.123.50 0:0:0:0:0:ffff:a65a:7b32
166.90.123.51 0:0:0:0:0:ffff:a65a:7b33
166.90.123.52 0:0:0:0:0:ffff:a65a:7b34
166.90.123.53 0:0:0:0:0:ffff:a65a:7b35
166.90.123.54 0:0:0:0:0:ffff:a65a:7b36
166.90.123.55 0:0:0:0:0:ffff:a65a:7b37
166.90.123.56 0:0:0:0:0:ffff:a65a:7b38
166.90.123.57 0:0:0:0:0:ffff:a65a:7b39
166.90.123.58 0:0:0:0:0:ffff:a65a:7b3a
166.90.123.59 0:0:0:0:0:ffff:a65a:7b3b
166.90.123.60 0:0:0:0:0:ffff:a65a:7b3c


166.90.123.61 0:0:0:0:0:ffff:a65a:7b3d
166.90.123.62 0:0:0:0:0:ffff:a65a:7b3e
166.90.123.63 0:0:0:0:0:ffff:a65a:7b3f
166.90.123.64 0:0:0:0:0:ffff:a65a:7b40
166.90.123.65 0:0:0:0:0:ffff:a65a:7b41
166.90.123.66 0:0:0:0:0:ffff:a65a:7b42
166.90.123.67 0:0:0:0:0:ffff:a65a:7b43
166.90.123.68 0:0:0:0:0:ffff:a65a:7b44
166.90.123.69 0:0:0:0:0:ffff:a65a:7b45
166.90.123.70 0:0:0:0:0:ffff:a65a:7b46
166.90.123.71 0:0:0:0:0:ffff:a65a:7b47
166.90.123.72 0:0:0:0:0:ffff:a65a:7b48
166.90.123.73 0:0:0:0:0:ffff:a65a:7b49
166.90.123.74 0:0:0:0:0:ffff:a65a:7b4a
166.90.123.75 0:0:0:0:0:ffff:a65a:7b4b
166.90.123.76 0:0:0:0:0:ffff:a65a:7b4c
166.90.123.77 0:0:0:0:0:ffff:a65a:7b4d
166.90.123.78 0:0:0:0:0:ffff:a65a:7b4e
166.90.123.79 0:0:0:0:0:ffff:a65a:7b4f
166.90.123.80 0:0:0:0:0:ffff:a65a:7b50
166.90.123.81 0:0:0:0:0:ffff:a65a:7b51
166.90.123.82 0:0:0:0:0:ffff:a65a:7b52
166.90.123.83 0:0:0:0:0:ffff:a65a:7b53
166.90.123.84 0:0:0:0:0:ffff:a65a:7b54
166.90.123.85 0:0:0:0:0:ffff:a65a:7b55
166.90.123.86 0:0:0:0:0:ffff:a65a:7b56
166.90.123.87 0:0:0:0:0:ffff:a65a:7b57
166.90.123.88 0:0:0:0:0:ffff:a65a:7b58
166.90.123.89 0:0:0:0:0:ffff:a65a:7b59
166.90.123.90 0:0:0:0:0:ffff:a65a:7b5a
166.90.123.91 0:0:0:0:0:ffff:a65a:7b5b
166.90.123.92 0:0:0:0:0:ffff:a65a:7b5c
166.90.123.93 0:0:0:0:0:ffff:a65a:7b5d
166.90.123.94 0:0:0:0:0:ffff:a65a:7b5e
166.90.123.95 0:0:0:0:0:ffff:a65a:7b5f
166.90.123.96 0:0:0:0:0:ffff:a65a:7b60
166.90.123.97 0:0:0:0:0:ffff:a65a:7b61
166.90.123.98 0:0:0:0:0:ffff:a65a:7b62
166.90.123.99 0:0:0:0:0:ffff:a65a:7b63
166.90.123.100 0:0:0:0:0:ffff:a65a:7b64
166.90.123.101 0:0:0:0:0:ffff:a65a:7b65
166.90.123.102 0:0:0:0:0:ffff:a65a:7b66
166.90.123.103 0:0:0:0:0:ffff:a65a:7b67
166.90.123.104 0:0:0:0:0:ffff:a65a:7b68
166.90.123.105 0:0:0:0:0:ffff:a65a:7b69
166.90.123.106 0:0:0:0:0:ffff:a65a:7b6a
166.90.123.107 0:0:0:0:0:ffff:a65a:7b6b
166.90.123.108 0:0:0:0:0:ffff:a65a:7b6c
166.90.123.109 0:0:0:0:0:ffff:a65a:7b6d
166.90.123.110 0:0:0:0:0:ffff:a65a:7b6e
166.90.123.111 0:0:0:0:0:ffff:a65a:7b6f
166.90.123.112 0:0:0:0:0:ffff:a65a:7b70
166.90.123.113 0:0:0:0:0:ffff:a65a:7b71
166.90.123.114 0:0:0:0:0:ffff:a65a:7b72
166.90.123.115 0:0:0:0:0:ffff:a65a:7b73
166.90.123.116 0:0:0:0:0:ffff:a65a:7b74
166.90.123.117 0:0:0:0:0:ffff:a65a:7b75
166.90.123.118 0:0:0:0:0:ffff:a65a:7b76
166.90.123.119 0:0:0:0:0:ffff:a65a:7b77
166.90.123.120 0:0:0:0:0:ffff:a65a:7b78


166.90.123.121 0:0:0:0:0:ffff:a65a:7b79
166.90.123.122 0:0:0:0:0:ffff:a65a:7b7a
166.90.123.123 0:0:0:0:0:ffff:a65a:7b7b
166.90.123.124 0:0:0:0:0:ffff:a65a:7b7c
166.90.123.125 0:0:0:0:0:ffff:a65a:7b7d
166.90.123.126 0:0:0:0:0:ffff:a65a:7b7e
166.90.123.127 0:0:0:0:0:ffff:a65a:7b7f
166.90.123.128 0:0:0:0:0:ffff:a65a:7b80
166.90.123.129 0:0:0:0:0:ffff:a65a:7b81
166.90.123.130 0:0:0:0:0:ffff:a65a:7b82
166.90.123.131 0:0:0:0:0:ffff:a65a:7b83
166.90.123.132 0:0:0:0:0:ffff:a65a:7b84
166.90.123.133 0:0:0:0:0:ffff:a65a:7b85
166.90.123.134 0:0:0:0:0:ffff:a65a:7b86
166.90.123.135 0:0:0:0:0:ffff:a65a:7b87
166.90.123.136 0:0:0:0:0:ffff:a65a:7b88
166.90.123.137 0:0:0:0:0:ffff:a65a:7b89
166.90.123.138 0:0:0:0:0:ffff:a65a:7b8a
166.90.123.139 0:0:0:0:0:ffff:a65a:7b8b
166.90.123.140 0:0:0:0:0:ffff:a65a:7b8c
166.90.123.141 0:0:0:0:0:ffff:a65a:7b8d
166.90.123.142 0:0:0:0:0:ffff:a65a:7b8e
166.90.123.143 0:0:0:0:0:ffff:a65a:7b8f
166.90.123.144 0:0:0:0:0:ffff:a65a:7b90
166.90.123.145 0:0:0:0:0:ffff:a65a:7b91
166.90.123.146 0:0:0:0:0:ffff:a65a:7b92
166.90.123.147 0:0:0:0:0:ffff:a65a:7b93
166.90.123.148 0:0:0:0:0:ffff:a65a:7b94
166.90.123.149 0:0:0:0:0:ffff:a65a:7b95
166.90.123.150 0:0:0:0:0:ffff:a65a:7b96
166.90.123.151 0:0:0:0:0:ffff:a65a:7b97
166.90.123.152 0:0:0:0:0:ffff:a65a:7b98
166.90.123.153 0:0:0:0:0:ffff:a65a:7b99
166.90.123.154 0:0:0:0:0:ffff:a65a:7b9a
166.90.123.155 0:0:0:0:0:ffff:a65a:7b9b
166.90.123.156 0:0:0:0:0:ffff:a65a:7b9c
166.90.123.157 0:0:0:0:0:ffff:a65a:7b9d
166.90.123.158 0:0:0:0:0:ffff:a65a:7b9e
166.90.123.159 0:0:0:0:0:ffff:a65a:7b9f
166.90.123.160 0:0:0:0:0:ffff:a65a:7ba0
166.90.123.161 0:0:0:0:0:ffff:a65a:7ba1
166.90.123.162 0:0:0:0:0:ffff:a65a:7ba2
166.90.123.163 0:0:0:0:0:ffff:a65a:7ba3
166.90.123.164 0:0:0:0:0:ffff:a65a:7ba4
166.90.123.165 0:0:0:0:0:ffff:a65a:7ba5
166.90.123.166 0:0:0:0:0:ffff:a65a:7ba6
166.90.123.167 0:0:0:0:0:ffff:a65a:7ba7
166.90.123.168 0:0:0:0:0:ffff:a65a:7ba8
166.90.123.169 0:0:0:0:0:ffff:a65a:7ba9
166.90.123.170 0:0:0:0:0:ffff:a65a:7baa
166.90.123.171 0:0:0:0:0:ffff:a65a:7bab
166.90.123.172 0:0:0:0:0:ffff:a65a:7bac
166.90.123.173 0:0:0:0:0:ffff:a65a:7bad
166.90.123.174 0:0:0:0:0:ffff:a65a:7bae
166.90.123.175 0:0:0:0:0:ffff:a65a:7baf
166.90.123.176 0:0:0:0:0:ffff:a65a:7bb0
166.90.123.177 0:0:0:0:0:ffff:a65a:7bb1
166.90.123.178 0:0:0:0:0:ffff:a65a:7bb2
166.90.123.179 0:0:0:0:0:ffff:a65a:7bb3
166.90.123.180 0:0:0:0:0:ffff:a65a:7bb4


166.90.123.181 0:0:0:0:0:ffff:a65a:7bb5
166.90.123.182 0:0:0:0:0:ffff:a65a:7bb6
166.90.123.183 0:0:0:0:0:ffff:a65a:7bb7
166.90.123.184 0:0:0:0:0:ffff:a65a:7bb8
166.90.123.185 0:0:0:0:0:ffff:a65a:7bb9
166.90.123.186 0:0:0:0:0:ffff:a65a:7bba
166.90.123.187 0:0:0:0:0:ffff:a65a:7bbb
166.90.123.188 0:0:0:0:0:ffff:a65a:7bbc
166.90.123.189 0:0:0:0:0:ffff:a65a:7bbd
166.90.123.190 0:0:0:0:0:ffff:a65a:7bbe
166.90.123.191 0:0:0:0:0:ffff:a65a:7bbf
166.90.123.192 0:0:0:0:0:ffff:a65a:7bc0
166.90.123.193 0:0:0:0:0:ffff:a65a:7bc1
166.90.123.194 0:0:0:0:0:ffff:a65a:7bc2
166.90.123.195 0:0:0:0:0:ffff:a65a:7bc3
166.90.123.196 0:0:0:0:0:ffff:a65a:7bc4
166.90.123.197 0:0:0:0:0:ffff:a65a:7bc5
166.90.123.198 0:0:0:0:0:ffff:a65a:7bc6
166.90.123.199 0:0:0:0:0:ffff:a65a:7bc7
166.90.123.200 0:0:0:0:0:ffff:a65a:7bc8
166.90.123.201 0:0:0:0:0:ffff:a65a:7bc9
166.90.123.202 0:0:0:0:0:ffff:a65a:7bca
166.90.123.203 0:0:0:0:0:ffff:a65a:7bcb
166.90.123.204 0:0:0:0:0:ffff:a65a:7bcc
166.90.123.205 0:0:0:0:0:ffff:a65a:7bcd
166.90.123.206 0:0:0:0:0:ffff:a65a:7bce
166.90.123.207 0:0:0:0:0:ffff:a65a:7bcf
166.90.123.208 0:0:0:0:0:ffff:a65a:7bd0
166.90.123.209 0:0:0:0:0:ffff:a65a:7bd1
166.90.123.210 0:0:0:0:0:ffff:a65a:7bd2
166.90.123.211 0:0:0:0:0:ffff:a65a:7bd3
166.90.123.212 0:0:0:0:0:ffff:a65a:7bd4
166.90.123.213 0:0:0:0:0:ffff:a65a:7bd5
166.90.123.214 0:0:0:0:0:ffff:a65a:7bd6
166.90.123.215 0:0:0:0:0:ffff:a65a:7bd7
166.90.123.216 0:0:0:0:0:ffff:a65a:7bd8
166.90.123.217 0:0:0:0:0:ffff:a65a:7bd9
166.90.123.218 0:0:0:0:0:ffff:a65a:7bda
166.90.123.219 0:0:0:0:0:ffff:a65a:7bdb
166.90.123.220 0:0:0:0:0:ffff:a65a:7bdc
166.90.123.221 0:0:0:0:0:ffff:a65a:7bdd
166.90.123.222 0:0:0:0:0:ffff:a65a:7bde
166.90.123.223 0:0:0:0:0:ffff:a65a:7bdf
166.90.123.224 0:0:0:0:0:ffff:a65a:7be0
166.90.123.225 0:0:0:0:0:ffff:a65a:7be1
166.90.123.226 0:0:0:0:0:ffff:a65a:7be2
166.90.123.227 0:0:0:0:0:ffff:a65a:7be3
166.90.123.228 0:0:0:0:0:ffff:a65a:7be4
166.90.123.229 0:0:0:0:0:ffff:a65a:7be5
166.90.123.230 0:0:0:0:0:ffff:a65a:7be6
166.90.123.231 0:0:0:0:0:ffff:a65a:7be7
166.90.123.232 0:0:0:0:0:ffff:a65a:7be8
166.90.123.233 0:0:0:0:0:ffff:a65a:7be9
166.90.123.234 0:0:0:0:0:ffff:a65a:7bea
166.90.123.235 0:0:0:0:0:ffff:a65a:7beb
166.90.123.236 0:0:0:0:0:ffff:a65a:7bec
166.90.123.237 0:0:0:0:0:ffff:a65a:7bed
166.90.123.238 0:0:0:0:0:ffff:a65a:7bee
166.90.123.239 0:0:0:0:0:ffff:a65a:7bef
166.90.123.240 0:0:0:0:0:ffff:a65a:7bf0
166.90.123.241 0:0:0:0:0:ffff:a65a:7bf1
166.90.123.242 0:0:0:0:0:ffff:a65a:7bf2
166.90.123.243 0:0:0:0:0:ffff:a65a:7bf3
166.90.123.244 0:0:0:0:0:ffff:a65a:7bf4
166.90.123.245 0:0:0:0:0:ffff:a65a:7bf5
166.90.123.246 0:0:0:0:0:ffff:a65a:7bf6
166.90.123.247 0:0:0:0:0:ffff:a65a:7bf7
166.90.123.248 0:0:0:0:0:ffff:a65a:7bf8
166.90.123.249 0:0:0:0:0:ffff:a65a:7bf9
166.90.123.250 0:0:0:0:0:ffff:a65a:7bfa
166.90.123.251 0:0:0:0:0:ffff:a65a:7bfb
166.90.123.252 0:0:0:0:0:ffff:a65a:7bfc
166.90.123.253 0:0:0:0:0:ffff:a65a:7bfd
166.90.123.254 0:0:0:0:0:ffff:a65a:7bfe
166.90.123.255 0:0:0:0:0:ffff:a65a: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.