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
128.156.123.1 0:0:0:0:0:ffff:809c:7b01
128.156.123.2 0:0:0:0:0:ffff:809c:7b02
128.156.123.3 0:0:0:0:0:ffff:809c:7b03
128.156.123.4 0:0:0:0:0:ffff:809c:7b04
128.156.123.5 0:0:0:0:0:ffff:809c:7b05
128.156.123.6 0:0:0:0:0:ffff:809c:7b06
128.156.123.7 0:0:0:0:0:ffff:809c:7b07
128.156.123.8 0:0:0:0:0:ffff:809c:7b08
128.156.123.9 0:0:0:0:0:ffff:809c:7b09
128.156.123.10 0:0:0:0:0:ffff:809c:7b0a
128.156.123.11 0:0:0:0:0:ffff:809c:7b0b
128.156.123.12 0:0:0:0:0:ffff:809c:7b0c
128.156.123.13 0:0:0:0:0:ffff:809c:7b0d
128.156.123.14 0:0:0:0:0:ffff:809c:7b0e
128.156.123.15 0:0:0:0:0:ffff:809c:7b0f
128.156.123.16 0:0:0:0:0:ffff:809c:7b10
128.156.123.17 0:0:0:0:0:ffff:809c:7b11
128.156.123.18 0:0:0:0:0:ffff:809c:7b12
128.156.123.19 0:0:0:0:0:ffff:809c:7b13
128.156.123.20 0:0:0:0:0:ffff:809c:7b14
128.156.123.21 0:0:0:0:0:ffff:809c:7b15
128.156.123.22 0:0:0:0:0:ffff:809c:7b16
128.156.123.23 0:0:0:0:0:ffff:809c:7b17
128.156.123.24 0:0:0:0:0:ffff:809c:7b18
128.156.123.25 0:0:0:0:0:ffff:809c:7b19
128.156.123.26 0:0:0:0:0:ffff:809c:7b1a
128.156.123.27 0:0:0:0:0:ffff:809c:7b1b
128.156.123.28 0:0:0:0:0:ffff:809c:7b1c
128.156.123.29 0:0:0:0:0:ffff:809c:7b1d
128.156.123.30 0:0:0:0:0:ffff:809c:7b1e
128.156.123.31 0:0:0:0:0:ffff:809c:7b1f
128.156.123.32 0:0:0:0:0:ffff:809c:7b20
128.156.123.33 0:0:0:0:0:ffff:809c:7b21
128.156.123.34 0:0:0:0:0:ffff:809c:7b22
128.156.123.35 0:0:0:0:0:ffff:809c:7b23
128.156.123.36 0:0:0:0:0:ffff:809c:7b24
128.156.123.37 0:0:0:0:0:ffff:809c:7b25
128.156.123.38 0:0:0:0:0:ffff:809c:7b26
128.156.123.39 0:0:0:0:0:ffff:809c:7b27
128.156.123.40 0:0:0:0:0:ffff:809c:7b28
128.156.123.41 0:0:0:0:0:ffff:809c:7b29
128.156.123.42 0:0:0:0:0:ffff:809c:7b2a
128.156.123.43 0:0:0:0:0:ffff:809c:7b2b
128.156.123.44 0:0:0:0:0:ffff:809c:7b2c
128.156.123.45 0:0:0:0:0:ffff:809c:7b2d
128.156.123.46 0:0:0:0:0:ffff:809c:7b2e
128.156.123.47 0:0:0:0:0:ffff:809c:7b2f
128.156.123.48 0:0:0:0:0:ffff:809c:7b30
128.156.123.49 0:0:0:0:0:ffff:809c:7b31
128.156.123.50 0:0:0:0:0:ffff:809c:7b32
128.156.123.51 0:0:0:0:0:ffff:809c:7b33
128.156.123.52 0:0:0:0:0:ffff:809c:7b34
128.156.123.53 0:0:0:0:0:ffff:809c:7b35
128.156.123.54 0:0:0:0:0:ffff:809c:7b36
128.156.123.55 0:0:0:0:0:ffff:809c:7b37
128.156.123.56 0:0:0:0:0:ffff:809c:7b38
128.156.123.57 0:0:0:0:0:ffff:809c:7b39
128.156.123.58 0:0:0:0:0:ffff:809c:7b3a
128.156.123.59 0:0:0:0:0:ffff:809c:7b3b
128.156.123.60 0:0:0:0:0:ffff:809c:7b3c


128.156.123.61 0:0:0:0:0:ffff:809c:7b3d
128.156.123.62 0:0:0:0:0:ffff:809c:7b3e
128.156.123.63 0:0:0:0:0:ffff:809c:7b3f
128.156.123.64 0:0:0:0:0:ffff:809c:7b40
128.156.123.65 0:0:0:0:0:ffff:809c:7b41
128.156.123.66 0:0:0:0:0:ffff:809c:7b42
128.156.123.67 0:0:0:0:0:ffff:809c:7b43
128.156.123.68 0:0:0:0:0:ffff:809c:7b44
128.156.123.69 0:0:0:0:0:ffff:809c:7b45
128.156.123.70 0:0:0:0:0:ffff:809c:7b46
128.156.123.71 0:0:0:0:0:ffff:809c:7b47
128.156.123.72 0:0:0:0:0:ffff:809c:7b48
128.156.123.73 0:0:0:0:0:ffff:809c:7b49
128.156.123.74 0:0:0:0:0:ffff:809c:7b4a
128.156.123.75 0:0:0:0:0:ffff:809c:7b4b
128.156.123.76 0:0:0:0:0:ffff:809c:7b4c
128.156.123.77 0:0:0:0:0:ffff:809c:7b4d
128.156.123.78 0:0:0:0:0:ffff:809c:7b4e
128.156.123.79 0:0:0:0:0:ffff:809c:7b4f
128.156.123.80 0:0:0:0:0:ffff:809c:7b50
128.156.123.81 0:0:0:0:0:ffff:809c:7b51
128.156.123.82 0:0:0:0:0:ffff:809c:7b52
128.156.123.83 0:0:0:0:0:ffff:809c:7b53
128.156.123.84 0:0:0:0:0:ffff:809c:7b54
128.156.123.85 0:0:0:0:0:ffff:809c:7b55
128.156.123.86 0:0:0:0:0:ffff:809c:7b56
128.156.123.87 0:0:0:0:0:ffff:809c:7b57
128.156.123.88 0:0:0:0:0:ffff:809c:7b58
128.156.123.89 0:0:0:0:0:ffff:809c:7b59
128.156.123.90 0:0:0:0:0:ffff:809c:7b5a
128.156.123.91 0:0:0:0:0:ffff:809c:7b5b
128.156.123.92 0:0:0:0:0:ffff:809c:7b5c
128.156.123.93 0:0:0:0:0:ffff:809c:7b5d
128.156.123.94 0:0:0:0:0:ffff:809c:7b5e
128.156.123.95 0:0:0:0:0:ffff:809c:7b5f
128.156.123.96 0:0:0:0:0:ffff:809c:7b60
128.156.123.97 0:0:0:0:0:ffff:809c:7b61
128.156.123.98 0:0:0:0:0:ffff:809c:7b62
128.156.123.99 0:0:0:0:0:ffff:809c:7b63
128.156.123.100 0:0:0:0:0:ffff:809c:7b64
128.156.123.101 0:0:0:0:0:ffff:809c:7b65
128.156.123.102 0:0:0:0:0:ffff:809c:7b66
128.156.123.103 0:0:0:0:0:ffff:809c:7b67
128.156.123.104 0:0:0:0:0:ffff:809c:7b68
128.156.123.105 0:0:0:0:0:ffff:809c:7b69
128.156.123.106 0:0:0:0:0:ffff:809c:7b6a
128.156.123.107 0:0:0:0:0:ffff:809c:7b6b
128.156.123.108 0:0:0:0:0:ffff:809c:7b6c
128.156.123.109 0:0:0:0:0:ffff:809c:7b6d
128.156.123.110 0:0:0:0:0:ffff:809c:7b6e
128.156.123.111 0:0:0:0:0:ffff:809c:7b6f
128.156.123.112 0:0:0:0:0:ffff:809c:7b70
128.156.123.113 0:0:0:0:0:ffff:809c:7b71
128.156.123.114 0:0:0:0:0:ffff:809c:7b72
128.156.123.115 0:0:0:0:0:ffff:809c:7b73
128.156.123.116 0:0:0:0:0:ffff:809c:7b74
128.156.123.117 0:0:0:0:0:ffff:809c:7b75
128.156.123.118 0:0:0:0:0:ffff:809c:7b76
128.156.123.119 0:0:0:0:0:ffff:809c:7b77
128.156.123.120 0:0:0:0:0:ffff:809c:7b78


128.156.123.121 0:0:0:0:0:ffff:809c:7b79
128.156.123.122 0:0:0:0:0:ffff:809c:7b7a
128.156.123.123 0:0:0:0:0:ffff:809c:7b7b
128.156.123.124 0:0:0:0:0:ffff:809c:7b7c
128.156.123.125 0:0:0:0:0:ffff:809c:7b7d
128.156.123.126 0:0:0:0:0:ffff:809c:7b7e
128.156.123.127 0:0:0:0:0:ffff:809c:7b7f
128.156.123.128 0:0:0:0:0:ffff:809c:7b80
128.156.123.129 0:0:0:0:0:ffff:809c:7b81
128.156.123.130 0:0:0:0:0:ffff:809c:7b82
128.156.123.131 0:0:0:0:0:ffff:809c:7b83
128.156.123.132 0:0:0:0:0:ffff:809c:7b84
128.156.123.133 0:0:0:0:0:ffff:809c:7b85
128.156.123.134 0:0:0:0:0:ffff:809c:7b86
128.156.123.135 0:0:0:0:0:ffff:809c:7b87
128.156.123.136 0:0:0:0:0:ffff:809c:7b88
128.156.123.137 0:0:0:0:0:ffff:809c:7b89
128.156.123.138 0:0:0:0:0:ffff:809c:7b8a
128.156.123.139 0:0:0:0:0:ffff:809c:7b8b
128.156.123.140 0:0:0:0:0:ffff:809c:7b8c
128.156.123.141 0:0:0:0:0:ffff:809c:7b8d
128.156.123.142 0:0:0:0:0:ffff:809c:7b8e
128.156.123.143 0:0:0:0:0:ffff:809c:7b8f
128.156.123.144 0:0:0:0:0:ffff:809c:7b90
128.156.123.145 0:0:0:0:0:ffff:809c:7b91
128.156.123.146 0:0:0:0:0:ffff:809c:7b92
128.156.123.147 0:0:0:0:0:ffff:809c:7b93
128.156.123.148 0:0:0:0:0:ffff:809c:7b94
128.156.123.149 0:0:0:0:0:ffff:809c:7b95
128.156.123.150 0:0:0:0:0:ffff:809c:7b96
128.156.123.151 0:0:0:0:0:ffff:809c:7b97
128.156.123.152 0:0:0:0:0:ffff:809c:7b98
128.156.123.153 0:0:0:0:0:ffff:809c:7b99
128.156.123.154 0:0:0:0:0:ffff:809c:7b9a
128.156.123.155 0:0:0:0:0:ffff:809c:7b9b
128.156.123.156 0:0:0:0:0:ffff:809c:7b9c
128.156.123.157 0:0:0:0:0:ffff:809c:7b9d
128.156.123.158 0:0:0:0:0:ffff:809c:7b9e
128.156.123.159 0:0:0:0:0:ffff:809c:7b9f
128.156.123.160 0:0:0:0:0:ffff:809c:7ba0
128.156.123.161 0:0:0:0:0:ffff:809c:7ba1
128.156.123.162 0:0:0:0:0:ffff:809c:7ba2
128.156.123.163 0:0:0:0:0:ffff:809c:7ba3
128.156.123.164 0:0:0:0:0:ffff:809c:7ba4
128.156.123.165 0:0:0:0:0:ffff:809c:7ba5
128.156.123.166 0:0:0:0:0:ffff:809c:7ba6
128.156.123.167 0:0:0:0:0:ffff:809c:7ba7
128.156.123.168 0:0:0:0:0:ffff:809c:7ba8
128.156.123.169 0:0:0:0:0:ffff:809c:7ba9
128.156.123.170 0:0:0:0:0:ffff:809c:7baa
128.156.123.171 0:0:0:0:0:ffff:809c:7bab
128.156.123.172 0:0:0:0:0:ffff:809c:7bac
128.156.123.173 0:0:0:0:0:ffff:809c:7bad
128.156.123.174 0:0:0:0:0:ffff:809c:7bae
128.156.123.175 0:0:0:0:0:ffff:809c:7baf
128.156.123.176 0:0:0:0:0:ffff:809c:7bb0
128.156.123.177 0:0:0:0:0:ffff:809c:7bb1
128.156.123.178 0:0:0:0:0:ffff:809c:7bb2
128.156.123.179 0:0:0:0:0:ffff:809c:7bb3
128.156.123.180 0:0:0:0:0:ffff:809c:7bb4


128.156.123.181 0:0:0:0:0:ffff:809c:7bb5
128.156.123.182 0:0:0:0:0:ffff:809c:7bb6
128.156.123.183 0:0:0:0:0:ffff:809c:7bb7
128.156.123.184 0:0:0:0:0:ffff:809c:7bb8
128.156.123.185 0:0:0:0:0:ffff:809c:7bb9
128.156.123.186 0:0:0:0:0:ffff:809c:7bba
128.156.123.187 0:0:0:0:0:ffff:809c:7bbb
128.156.123.188 0:0:0:0:0:ffff:809c:7bbc
128.156.123.189 0:0:0:0:0:ffff:809c:7bbd
128.156.123.190 0:0:0:0:0:ffff:809c:7bbe
128.156.123.191 0:0:0:0:0:ffff:809c:7bbf
128.156.123.192 0:0:0:0:0:ffff:809c:7bc0
128.156.123.193 0:0:0:0:0:ffff:809c:7bc1
128.156.123.194 0:0:0:0:0:ffff:809c:7bc2
128.156.123.195 0:0:0:0:0:ffff:809c:7bc3
128.156.123.196 0:0:0:0:0:ffff:809c:7bc4
128.156.123.197 0:0:0:0:0:ffff:809c:7bc5
128.156.123.198 0:0:0:0:0:ffff:809c:7bc6
128.156.123.199 0:0:0:0:0:ffff:809c:7bc7
128.156.123.200 0:0:0:0:0:ffff:809c:7bc8
128.156.123.201 0:0:0:0:0:ffff:809c:7bc9
128.156.123.202 0:0:0:0:0:ffff:809c:7bca
128.156.123.203 0:0:0:0:0:ffff:809c:7bcb
128.156.123.204 0:0:0:0:0:ffff:809c:7bcc
128.156.123.205 0:0:0:0:0:ffff:809c:7bcd
128.156.123.206 0:0:0:0:0:ffff:809c:7bce
128.156.123.207 0:0:0:0:0:ffff:809c:7bcf
128.156.123.208 0:0:0:0:0:ffff:809c:7bd0
128.156.123.209 0:0:0:0:0:ffff:809c:7bd1
128.156.123.210 0:0:0:0:0:ffff:809c:7bd2
128.156.123.211 0:0:0:0:0:ffff:809c:7bd3
128.156.123.212 0:0:0:0:0:ffff:809c:7bd4
128.156.123.213 0:0:0:0:0:ffff:809c:7bd5
128.156.123.214 0:0:0:0:0:ffff:809c:7bd6
128.156.123.215 0:0:0:0:0:ffff:809c:7bd7
128.156.123.216 0:0:0:0:0:ffff:809c:7bd8
128.156.123.217 0:0:0:0:0:ffff:809c:7bd9
128.156.123.218 0:0:0:0:0:ffff:809c:7bda
128.156.123.219 0:0:0:0:0:ffff:809c:7bdb
128.156.123.220 0:0:0:0:0:ffff:809c:7bdc
128.156.123.221 0:0:0:0:0:ffff:809c:7bdd
128.156.123.222 0:0:0:0:0:ffff:809c:7bde
128.156.123.223 0:0:0:0:0:ffff:809c:7bdf
128.156.123.224 0:0:0:0:0:ffff:809c:7be0
128.156.123.225 0:0:0:0:0:ffff:809c:7be1
128.156.123.226 0:0:0:0:0:ffff:809c:7be2
128.156.123.227 0:0:0:0:0:ffff:809c:7be3
128.156.123.228 0:0:0:0:0:ffff:809c:7be4
128.156.123.229 0:0:0:0:0:ffff:809c:7be5
128.156.123.230 0:0:0:0:0:ffff:809c:7be6
128.156.123.231 0:0:0:0:0:ffff:809c:7be7
128.156.123.232 0:0:0:0:0:ffff:809c:7be8
128.156.123.233 0:0:0:0:0:ffff:809c:7be9
128.156.123.234 0:0:0:0:0:ffff:809c:7bea
128.156.123.235 0:0:0:0:0:ffff:809c:7beb
128.156.123.236 0:0:0:0:0:ffff:809c:7bec
128.156.123.237 0:0:0:0:0:ffff:809c:7bed
128.156.123.238 0:0:0:0:0:ffff:809c:7bee
128.156.123.239 0:0:0:0:0:ffff:809c:7bef
128.156.123.240 0:0:0:0:0:ffff:809c:7bf0
128.156.123.241 0:0:0:0:0:ffff:809c:7bf1
128.156.123.242 0:0:0:0:0:ffff:809c:7bf2
128.156.123.243 0:0:0:0:0:ffff:809c:7bf3
128.156.123.244 0:0:0:0:0:ffff:809c:7bf4
128.156.123.245 0:0:0:0:0:ffff:809c:7bf5
128.156.123.246 0:0:0:0:0:ffff:809c:7bf6
128.156.123.247 0:0:0:0:0:ffff:809c:7bf7
128.156.123.248 0:0:0:0:0:ffff:809c:7bf8
128.156.123.249 0:0:0:0:0:ffff:809c:7bf9
128.156.123.250 0:0:0:0:0:ffff:809c:7bfa
128.156.123.251 0:0:0:0:0:ffff:809c:7bfb
128.156.123.252 0:0:0:0:0:ffff:809c:7bfc
128.156.123.253 0:0:0:0:0:ffff:809c:7bfd
128.156.123.254 0:0:0:0:0:ffff:809c:7bfe
128.156.123.255 0:0:0:0:0:ffff:809c: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.