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
123.178.123.1 0:0:0:0:0:ffff:7bb2:7b01
123.178.123.2 0:0:0:0:0:ffff:7bb2:7b02
123.178.123.3 0:0:0:0:0:ffff:7bb2:7b03
123.178.123.4 0:0:0:0:0:ffff:7bb2:7b04
123.178.123.5 0:0:0:0:0:ffff:7bb2:7b05
123.178.123.6 0:0:0:0:0:ffff:7bb2:7b06
123.178.123.7 0:0:0:0:0:ffff:7bb2:7b07
123.178.123.8 0:0:0:0:0:ffff:7bb2:7b08
123.178.123.9 0:0:0:0:0:ffff:7bb2:7b09
123.178.123.10 0:0:0:0:0:ffff:7bb2:7b0a
123.178.123.11 0:0:0:0:0:ffff:7bb2:7b0b
123.178.123.12 0:0:0:0:0:ffff:7bb2:7b0c
123.178.123.13 0:0:0:0:0:ffff:7bb2:7b0d
123.178.123.14 0:0:0:0:0:ffff:7bb2:7b0e
123.178.123.15 0:0:0:0:0:ffff:7bb2:7b0f
123.178.123.16 0:0:0:0:0:ffff:7bb2:7b10
123.178.123.17 0:0:0:0:0:ffff:7bb2:7b11
123.178.123.18 0:0:0:0:0:ffff:7bb2:7b12
123.178.123.19 0:0:0:0:0:ffff:7bb2:7b13
123.178.123.20 0:0:0:0:0:ffff:7bb2:7b14
123.178.123.21 0:0:0:0:0:ffff:7bb2:7b15
123.178.123.22 0:0:0:0:0:ffff:7bb2:7b16
123.178.123.23 0:0:0:0:0:ffff:7bb2:7b17
123.178.123.24 0:0:0:0:0:ffff:7bb2:7b18
123.178.123.25 0:0:0:0:0:ffff:7bb2:7b19
123.178.123.26 0:0:0:0:0:ffff:7bb2:7b1a
123.178.123.27 0:0:0:0:0:ffff:7bb2:7b1b
123.178.123.28 0:0:0:0:0:ffff:7bb2:7b1c
123.178.123.29 0:0:0:0:0:ffff:7bb2:7b1d
123.178.123.30 0:0:0:0:0:ffff:7bb2:7b1e
123.178.123.31 0:0:0:0:0:ffff:7bb2:7b1f
123.178.123.32 0:0:0:0:0:ffff:7bb2:7b20
123.178.123.33 0:0:0:0:0:ffff:7bb2:7b21
123.178.123.34 0:0:0:0:0:ffff:7bb2:7b22
123.178.123.35 0:0:0:0:0:ffff:7bb2:7b23
123.178.123.36 0:0:0:0:0:ffff:7bb2:7b24
123.178.123.37 0:0:0:0:0:ffff:7bb2:7b25
123.178.123.38 0:0:0:0:0:ffff:7bb2:7b26
123.178.123.39 0:0:0:0:0:ffff:7bb2:7b27
123.178.123.40 0:0:0:0:0:ffff:7bb2:7b28
123.178.123.41 0:0:0:0:0:ffff:7bb2:7b29
123.178.123.42 0:0:0:0:0:ffff:7bb2:7b2a
123.178.123.43 0:0:0:0:0:ffff:7bb2:7b2b
123.178.123.44 0:0:0:0:0:ffff:7bb2:7b2c
123.178.123.45 0:0:0:0:0:ffff:7bb2:7b2d
123.178.123.46 0:0:0:0:0:ffff:7bb2:7b2e
123.178.123.47 0:0:0:0:0:ffff:7bb2:7b2f
123.178.123.48 0:0:0:0:0:ffff:7bb2:7b30
123.178.123.49 0:0:0:0:0:ffff:7bb2:7b31
123.178.123.50 0:0:0:0:0:ffff:7bb2:7b32
123.178.123.51 0:0:0:0:0:ffff:7bb2:7b33
123.178.123.52 0:0:0:0:0:ffff:7bb2:7b34
123.178.123.53 0:0:0:0:0:ffff:7bb2:7b35
123.178.123.54 0:0:0:0:0:ffff:7bb2:7b36
123.178.123.55 0:0:0:0:0:ffff:7bb2:7b37
123.178.123.56 0:0:0:0:0:ffff:7bb2:7b38
123.178.123.57 0:0:0:0:0:ffff:7bb2:7b39
123.178.123.58 0:0:0:0:0:ffff:7bb2:7b3a
123.178.123.59 0:0:0:0:0:ffff:7bb2:7b3b
123.178.123.60 0:0:0:0:0:ffff:7bb2:7b3c


123.178.123.61 0:0:0:0:0:ffff:7bb2:7b3d
123.178.123.62 0:0:0:0:0:ffff:7bb2:7b3e
123.178.123.63 0:0:0:0:0:ffff:7bb2:7b3f
123.178.123.64 0:0:0:0:0:ffff:7bb2:7b40
123.178.123.65 0:0:0:0:0:ffff:7bb2:7b41
123.178.123.66 0:0:0:0:0:ffff:7bb2:7b42
123.178.123.67 0:0:0:0:0:ffff:7bb2:7b43
123.178.123.68 0:0:0:0:0:ffff:7bb2:7b44
123.178.123.69 0:0:0:0:0:ffff:7bb2:7b45
123.178.123.70 0:0:0:0:0:ffff:7bb2:7b46
123.178.123.71 0:0:0:0:0:ffff:7bb2:7b47
123.178.123.72 0:0:0:0:0:ffff:7bb2:7b48
123.178.123.73 0:0:0:0:0:ffff:7bb2:7b49
123.178.123.74 0:0:0:0:0:ffff:7bb2:7b4a
123.178.123.75 0:0:0:0:0:ffff:7bb2:7b4b
123.178.123.76 0:0:0:0:0:ffff:7bb2:7b4c
123.178.123.77 0:0:0:0:0:ffff:7bb2:7b4d
123.178.123.78 0:0:0:0:0:ffff:7bb2:7b4e
123.178.123.79 0:0:0:0:0:ffff:7bb2:7b4f
123.178.123.80 0:0:0:0:0:ffff:7bb2:7b50
123.178.123.81 0:0:0:0:0:ffff:7bb2:7b51
123.178.123.82 0:0:0:0:0:ffff:7bb2:7b52
123.178.123.83 0:0:0:0:0:ffff:7bb2:7b53
123.178.123.84 0:0:0:0:0:ffff:7bb2:7b54
123.178.123.85 0:0:0:0:0:ffff:7bb2:7b55
123.178.123.86 0:0:0:0:0:ffff:7bb2:7b56
123.178.123.87 0:0:0:0:0:ffff:7bb2:7b57
123.178.123.88 0:0:0:0:0:ffff:7bb2:7b58
123.178.123.89 0:0:0:0:0:ffff:7bb2:7b59
123.178.123.90 0:0:0:0:0:ffff:7bb2:7b5a
123.178.123.91 0:0:0:0:0:ffff:7bb2:7b5b
123.178.123.92 0:0:0:0:0:ffff:7bb2:7b5c
123.178.123.93 0:0:0:0:0:ffff:7bb2:7b5d
123.178.123.94 0:0:0:0:0:ffff:7bb2:7b5e
123.178.123.95 0:0:0:0:0:ffff:7bb2:7b5f
123.178.123.96 0:0:0:0:0:ffff:7bb2:7b60
123.178.123.97 0:0:0:0:0:ffff:7bb2:7b61
123.178.123.98 0:0:0:0:0:ffff:7bb2:7b62
123.178.123.99 0:0:0:0:0:ffff:7bb2:7b63
123.178.123.100 0:0:0:0:0:ffff:7bb2:7b64
123.178.123.101 0:0:0:0:0:ffff:7bb2:7b65
123.178.123.102 0:0:0:0:0:ffff:7bb2:7b66
123.178.123.103 0:0:0:0:0:ffff:7bb2:7b67
123.178.123.104 0:0:0:0:0:ffff:7bb2:7b68
123.178.123.105 0:0:0:0:0:ffff:7bb2:7b69
123.178.123.106 0:0:0:0:0:ffff:7bb2:7b6a
123.178.123.107 0:0:0:0:0:ffff:7bb2:7b6b
123.178.123.108 0:0:0:0:0:ffff:7bb2:7b6c
123.178.123.109 0:0:0:0:0:ffff:7bb2:7b6d
123.178.123.110 0:0:0:0:0:ffff:7bb2:7b6e
123.178.123.111 0:0:0:0:0:ffff:7bb2:7b6f
123.178.123.112 0:0:0:0:0:ffff:7bb2:7b70
123.178.123.113 0:0:0:0:0:ffff:7bb2:7b71
123.178.123.114 0:0:0:0:0:ffff:7bb2:7b72
123.178.123.115 0:0:0:0:0:ffff:7bb2:7b73
123.178.123.116 0:0:0:0:0:ffff:7bb2:7b74
123.178.123.117 0:0:0:0:0:ffff:7bb2:7b75
123.178.123.118 0:0:0:0:0:ffff:7bb2:7b76
123.178.123.119 0:0:0:0:0:ffff:7bb2:7b77
123.178.123.120 0:0:0:0:0:ffff:7bb2:7b78


123.178.123.121 0:0:0:0:0:ffff:7bb2:7b79
123.178.123.122 0:0:0:0:0:ffff:7bb2:7b7a
123.178.123.123 0:0:0:0:0:ffff:7bb2:7b7b
123.178.123.124 0:0:0:0:0:ffff:7bb2:7b7c
123.178.123.125 0:0:0:0:0:ffff:7bb2:7b7d
123.178.123.126 0:0:0:0:0:ffff:7bb2:7b7e
123.178.123.127 0:0:0:0:0:ffff:7bb2:7b7f
123.178.123.128 0:0:0:0:0:ffff:7bb2:7b80
123.178.123.129 0:0:0:0:0:ffff:7bb2:7b81
123.178.123.130 0:0:0:0:0:ffff:7bb2:7b82
123.178.123.131 0:0:0:0:0:ffff:7bb2:7b83
123.178.123.132 0:0:0:0:0:ffff:7bb2:7b84
123.178.123.133 0:0:0:0:0:ffff:7bb2:7b85
123.178.123.134 0:0:0:0:0:ffff:7bb2:7b86
123.178.123.135 0:0:0:0:0:ffff:7bb2:7b87
123.178.123.136 0:0:0:0:0:ffff:7bb2:7b88
123.178.123.137 0:0:0:0:0:ffff:7bb2:7b89
123.178.123.138 0:0:0:0:0:ffff:7bb2:7b8a
123.178.123.139 0:0:0:0:0:ffff:7bb2:7b8b
123.178.123.140 0:0:0:0:0:ffff:7bb2:7b8c
123.178.123.141 0:0:0:0:0:ffff:7bb2:7b8d
123.178.123.142 0:0:0:0:0:ffff:7bb2:7b8e
123.178.123.143 0:0:0:0:0:ffff:7bb2:7b8f
123.178.123.144 0:0:0:0:0:ffff:7bb2:7b90
123.178.123.145 0:0:0:0:0:ffff:7bb2:7b91
123.178.123.146 0:0:0:0:0:ffff:7bb2:7b92
123.178.123.147 0:0:0:0:0:ffff:7bb2:7b93
123.178.123.148 0:0:0:0:0:ffff:7bb2:7b94
123.178.123.149 0:0:0:0:0:ffff:7bb2:7b95
123.178.123.150 0:0:0:0:0:ffff:7bb2:7b96
123.178.123.151 0:0:0:0:0:ffff:7bb2:7b97
123.178.123.152 0:0:0:0:0:ffff:7bb2:7b98
123.178.123.153 0:0:0:0:0:ffff:7bb2:7b99
123.178.123.154 0:0:0:0:0:ffff:7bb2:7b9a
123.178.123.155 0:0:0:0:0:ffff:7bb2:7b9b
123.178.123.156 0:0:0:0:0:ffff:7bb2:7b9c
123.178.123.157 0:0:0:0:0:ffff:7bb2:7b9d
123.178.123.158 0:0:0:0:0:ffff:7bb2:7b9e
123.178.123.159 0:0:0:0:0:ffff:7bb2:7b9f
123.178.123.160 0:0:0:0:0:ffff:7bb2:7ba0
123.178.123.161 0:0:0:0:0:ffff:7bb2:7ba1
123.178.123.162 0:0:0:0:0:ffff:7bb2:7ba2
123.178.123.163 0:0:0:0:0:ffff:7bb2:7ba3
123.178.123.164 0:0:0:0:0:ffff:7bb2:7ba4
123.178.123.165 0:0:0:0:0:ffff:7bb2:7ba5
123.178.123.166 0:0:0:0:0:ffff:7bb2:7ba6
123.178.123.167 0:0:0:0:0:ffff:7bb2:7ba7
123.178.123.168 0:0:0:0:0:ffff:7bb2:7ba8
123.178.123.169 0:0:0:0:0:ffff:7bb2:7ba9
123.178.123.170 0:0:0:0:0:ffff:7bb2:7baa
123.178.123.171 0:0:0:0:0:ffff:7bb2:7bab
123.178.123.172 0:0:0:0:0:ffff:7bb2:7bac
123.178.123.173 0:0:0:0:0:ffff:7bb2:7bad
123.178.123.174 0:0:0:0:0:ffff:7bb2:7bae
123.178.123.175 0:0:0:0:0:ffff:7bb2:7baf
123.178.123.176 0:0:0:0:0:ffff:7bb2:7bb0
123.178.123.177 0:0:0:0:0:ffff:7bb2:7bb1
123.178.123.178 0:0:0:0:0:ffff:7bb2:7bb2
123.178.123.179 0:0:0:0:0:ffff:7bb2:7bb3
123.178.123.180 0:0:0:0:0:ffff:7bb2:7bb4


123.178.123.181 0:0:0:0:0:ffff:7bb2:7bb5
123.178.123.182 0:0:0:0:0:ffff:7bb2:7bb6
123.178.123.183 0:0:0:0:0:ffff:7bb2:7bb7
123.178.123.184 0:0:0:0:0:ffff:7bb2:7bb8
123.178.123.185 0:0:0:0:0:ffff:7bb2:7bb9
123.178.123.186 0:0:0:0:0:ffff:7bb2:7bba
123.178.123.187 0:0:0:0:0:ffff:7bb2:7bbb
123.178.123.188 0:0:0:0:0:ffff:7bb2:7bbc
123.178.123.189 0:0:0:0:0:ffff:7bb2:7bbd
123.178.123.190 0:0:0:0:0:ffff:7bb2:7bbe
123.178.123.191 0:0:0:0:0:ffff:7bb2:7bbf
123.178.123.192 0:0:0:0:0:ffff:7bb2:7bc0
123.178.123.193 0:0:0:0:0:ffff:7bb2:7bc1
123.178.123.194 0:0:0:0:0:ffff:7bb2:7bc2
123.178.123.195 0:0:0:0:0:ffff:7bb2:7bc3
123.178.123.196 0:0:0:0:0:ffff:7bb2:7bc4
123.178.123.197 0:0:0:0:0:ffff:7bb2:7bc5
123.178.123.198 0:0:0:0:0:ffff:7bb2:7bc6
123.178.123.199 0:0:0:0:0:ffff:7bb2:7bc7
123.178.123.200 0:0:0:0:0:ffff:7bb2:7bc8
123.178.123.201 0:0:0:0:0:ffff:7bb2:7bc9
123.178.123.202 0:0:0:0:0:ffff:7bb2:7bca
123.178.123.203 0:0:0:0:0:ffff:7bb2:7bcb
123.178.123.204 0:0:0:0:0:ffff:7bb2:7bcc
123.178.123.205 0:0:0:0:0:ffff:7bb2:7bcd
123.178.123.206 0:0:0:0:0:ffff:7bb2:7bce
123.178.123.207 0:0:0:0:0:ffff:7bb2:7bcf
123.178.123.208 0:0:0:0:0:ffff:7bb2:7bd0
123.178.123.209 0:0:0:0:0:ffff:7bb2:7bd1
123.178.123.210 0:0:0:0:0:ffff:7bb2:7bd2
123.178.123.211 0:0:0:0:0:ffff:7bb2:7bd3
123.178.123.212 0:0:0:0:0:ffff:7bb2:7bd4
123.178.123.213 0:0:0:0:0:ffff:7bb2:7bd5
123.178.123.214 0:0:0:0:0:ffff:7bb2:7bd6
123.178.123.215 0:0:0:0:0:ffff:7bb2:7bd7
123.178.123.216 0:0:0:0:0:ffff:7bb2:7bd8
123.178.123.217 0:0:0:0:0:ffff:7bb2:7bd9
123.178.123.218 0:0:0:0:0:ffff:7bb2:7bda
123.178.123.219 0:0:0:0:0:ffff:7bb2:7bdb
123.178.123.220 0:0:0:0:0:ffff:7bb2:7bdc
123.178.123.221 0:0:0:0:0:ffff:7bb2:7bdd
123.178.123.222 0:0:0:0:0:ffff:7bb2:7bde
123.178.123.223 0:0:0:0:0:ffff:7bb2:7bdf
123.178.123.224 0:0:0:0:0:ffff:7bb2:7be0
123.178.123.225 0:0:0:0:0:ffff:7bb2:7be1
123.178.123.226 0:0:0:0:0:ffff:7bb2:7be2
123.178.123.227 0:0:0:0:0:ffff:7bb2:7be3
123.178.123.228 0:0:0:0:0:ffff:7bb2:7be4
123.178.123.229 0:0:0:0:0:ffff:7bb2:7be5
123.178.123.230 0:0:0:0:0:ffff:7bb2:7be6
123.178.123.231 0:0:0:0:0:ffff:7bb2:7be7
123.178.123.232 0:0:0:0:0:ffff:7bb2:7be8
123.178.123.233 0:0:0:0:0:ffff:7bb2:7be9
123.178.123.234 0:0:0:0:0:ffff:7bb2:7bea
123.178.123.235 0:0:0:0:0:ffff:7bb2:7beb
123.178.123.236 0:0:0:0:0:ffff:7bb2:7bec
123.178.123.237 0:0:0:0:0:ffff:7bb2:7bed
123.178.123.238 0:0:0:0:0:ffff:7bb2:7bee
123.178.123.239 0:0:0:0:0:ffff:7bb2:7bef
123.178.123.240 0:0:0:0:0:ffff:7bb2:7bf0
123.178.123.241 0:0:0:0:0:ffff:7bb2:7bf1
123.178.123.242 0:0:0:0:0:ffff:7bb2:7bf2
123.178.123.243 0:0:0:0:0:ffff:7bb2:7bf3
123.178.123.244 0:0:0:0:0:ffff:7bb2:7bf4
123.178.123.245 0:0:0:0:0:ffff:7bb2:7bf5
123.178.123.246 0:0:0:0:0:ffff:7bb2:7bf6
123.178.123.247 0:0:0:0:0:ffff:7bb2:7bf7
123.178.123.248 0:0:0:0:0:ffff:7bb2:7bf8
123.178.123.249 0:0:0:0:0:ffff:7bb2:7bf9
123.178.123.250 0:0:0:0:0:ffff:7bb2:7bfa
123.178.123.251 0:0:0:0:0:ffff:7bb2:7bfb
123.178.123.252 0:0:0:0:0:ffff:7bb2:7bfc
123.178.123.253 0:0:0:0:0:ffff:7bb2:7bfd
123.178.123.254 0:0:0:0:0:ffff:7bb2:7bfe
123.178.123.255 0:0:0:0:0:ffff:7bb2:7bff


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.