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
123.255.91.1 0:0:0:0:0:ffff:7bff:5b01
123.255.91.2 0:0:0:0:0:ffff:7bff:5b02
123.255.91.3 0:0:0:0:0:ffff:7bff:5b03
123.255.91.4 0:0:0:0:0:ffff:7bff:5b04
123.255.91.5 0:0:0:0:0:ffff:7bff:5b05
123.255.91.6 0:0:0:0:0:ffff:7bff:5b06
123.255.91.7 0:0:0:0:0:ffff:7bff:5b07
123.255.91.8 0:0:0:0:0:ffff:7bff:5b08
123.255.91.9 0:0:0:0:0:ffff:7bff:5b09
123.255.91.10 0:0:0:0:0:ffff:7bff:5b0a
123.255.91.11 0:0:0:0:0:ffff:7bff:5b0b
123.255.91.12 0:0:0:0:0:ffff:7bff:5b0c
123.255.91.13 0:0:0:0:0:ffff:7bff:5b0d
123.255.91.14 0:0:0:0:0:ffff:7bff:5b0e
123.255.91.15 0:0:0:0:0:ffff:7bff:5b0f
123.255.91.16 0:0:0:0:0:ffff:7bff:5b10
123.255.91.17 0:0:0:0:0:ffff:7bff:5b11
123.255.91.18 0:0:0:0:0:ffff:7bff:5b12
123.255.91.19 0:0:0:0:0:ffff:7bff:5b13
123.255.91.20 0:0:0:0:0:ffff:7bff:5b14
123.255.91.21 0:0:0:0:0:ffff:7bff:5b15
123.255.91.22 0:0:0:0:0:ffff:7bff:5b16
123.255.91.23 0:0:0:0:0:ffff:7bff:5b17
123.255.91.24 0:0:0:0:0:ffff:7bff:5b18
123.255.91.25 0:0:0:0:0:ffff:7bff:5b19
123.255.91.26 0:0:0:0:0:ffff:7bff:5b1a
123.255.91.27 0:0:0:0:0:ffff:7bff:5b1b
123.255.91.28 0:0:0:0:0:ffff:7bff:5b1c
123.255.91.29 0:0:0:0:0:ffff:7bff:5b1d
123.255.91.30 0:0:0:0:0:ffff:7bff:5b1e
123.255.91.31 0:0:0:0:0:ffff:7bff:5b1f
123.255.91.32 0:0:0:0:0:ffff:7bff:5b20
123.255.91.33 0:0:0:0:0:ffff:7bff:5b21
123.255.91.34 0:0:0:0:0:ffff:7bff:5b22
123.255.91.35 0:0:0:0:0:ffff:7bff:5b23
123.255.91.36 0:0:0:0:0:ffff:7bff:5b24
123.255.91.37 0:0:0:0:0:ffff:7bff:5b25
123.255.91.38 0:0:0:0:0:ffff:7bff:5b26
123.255.91.39 0:0:0:0:0:ffff:7bff:5b27
123.255.91.40 0:0:0:0:0:ffff:7bff:5b28
123.255.91.41 0:0:0:0:0:ffff:7bff:5b29
123.255.91.42 0:0:0:0:0:ffff:7bff:5b2a
123.255.91.43 0:0:0:0:0:ffff:7bff:5b2b
123.255.91.44 0:0:0:0:0:ffff:7bff:5b2c
123.255.91.45 0:0:0:0:0:ffff:7bff:5b2d
123.255.91.46 0:0:0:0:0:ffff:7bff:5b2e
123.255.91.47 0:0:0:0:0:ffff:7bff:5b2f
123.255.91.48 0:0:0:0:0:ffff:7bff:5b30
123.255.91.49 0:0:0:0:0:ffff:7bff:5b31
123.255.91.50 0:0:0:0:0:ffff:7bff:5b32
123.255.91.51 0:0:0:0:0:ffff:7bff:5b33
123.255.91.52 0:0:0:0:0:ffff:7bff:5b34
123.255.91.53 0:0:0:0:0:ffff:7bff:5b35
123.255.91.54 0:0:0:0:0:ffff:7bff:5b36
123.255.91.55 0:0:0:0:0:ffff:7bff:5b37
123.255.91.56 0:0:0:0:0:ffff:7bff:5b38
123.255.91.57 0:0:0:0:0:ffff:7bff:5b39
123.255.91.58 0:0:0:0:0:ffff:7bff:5b3a
123.255.91.59 0:0:0:0:0:ffff:7bff:5b3b
123.255.91.60 0:0:0:0:0:ffff:7bff:5b3c


123.255.91.61 0:0:0:0:0:ffff:7bff:5b3d
123.255.91.62 0:0:0:0:0:ffff:7bff:5b3e
123.255.91.63 0:0:0:0:0:ffff:7bff:5b3f
123.255.91.64 0:0:0:0:0:ffff:7bff:5b40
123.255.91.65 0:0:0:0:0:ffff:7bff:5b41
123.255.91.66 0:0:0:0:0:ffff:7bff:5b42
123.255.91.67 0:0:0:0:0:ffff:7bff:5b43
123.255.91.68 0:0:0:0:0:ffff:7bff:5b44
123.255.91.69 0:0:0:0:0:ffff:7bff:5b45
123.255.91.70 0:0:0:0:0:ffff:7bff:5b46
123.255.91.71 0:0:0:0:0:ffff:7bff:5b47
123.255.91.72 0:0:0:0:0:ffff:7bff:5b48
123.255.91.73 0:0:0:0:0:ffff:7bff:5b49
123.255.91.74 0:0:0:0:0:ffff:7bff:5b4a
123.255.91.75 0:0:0:0:0:ffff:7bff:5b4b
123.255.91.76 0:0:0:0:0:ffff:7bff:5b4c
123.255.91.77 0:0:0:0:0:ffff:7bff:5b4d
123.255.91.78 0:0:0:0:0:ffff:7bff:5b4e
123.255.91.79 0:0:0:0:0:ffff:7bff:5b4f
123.255.91.80 0:0:0:0:0:ffff:7bff:5b50
123.255.91.81 0:0:0:0:0:ffff:7bff:5b51
123.255.91.82 0:0:0:0:0:ffff:7bff:5b52
123.255.91.83 0:0:0:0:0:ffff:7bff:5b53
123.255.91.84 0:0:0:0:0:ffff:7bff:5b54
123.255.91.85 0:0:0:0:0:ffff:7bff:5b55
123.255.91.86 0:0:0:0:0:ffff:7bff:5b56
123.255.91.87 0:0:0:0:0:ffff:7bff:5b57
123.255.91.88 0:0:0:0:0:ffff:7bff:5b58
123.255.91.89 0:0:0:0:0:ffff:7bff:5b59
123.255.91.90 0:0:0:0:0:ffff:7bff:5b5a
123.255.91.91 0:0:0:0:0:ffff:7bff:5b5b
123.255.91.92 0:0:0:0:0:ffff:7bff:5b5c
123.255.91.93 0:0:0:0:0:ffff:7bff:5b5d
123.255.91.94 0:0:0:0:0:ffff:7bff:5b5e
123.255.91.95 0:0:0:0:0:ffff:7bff:5b5f
123.255.91.96 0:0:0:0:0:ffff:7bff:5b60
123.255.91.97 0:0:0:0:0:ffff:7bff:5b61
123.255.91.98 0:0:0:0:0:ffff:7bff:5b62
123.255.91.99 0:0:0:0:0:ffff:7bff:5b63
123.255.91.100 0:0:0:0:0:ffff:7bff:5b64
123.255.91.101 0:0:0:0:0:ffff:7bff:5b65
123.255.91.102 0:0:0:0:0:ffff:7bff:5b66
123.255.91.103 0:0:0:0:0:ffff:7bff:5b67
123.255.91.104 0:0:0:0:0:ffff:7bff:5b68
123.255.91.105 0:0:0:0:0:ffff:7bff:5b69
123.255.91.106 0:0:0:0:0:ffff:7bff:5b6a
123.255.91.107 0:0:0:0:0:ffff:7bff:5b6b
123.255.91.108 0:0:0:0:0:ffff:7bff:5b6c
123.255.91.109 0:0:0:0:0:ffff:7bff:5b6d
123.255.91.110 0:0:0:0:0:ffff:7bff:5b6e
123.255.91.111 0:0:0:0:0:ffff:7bff:5b6f
123.255.91.112 0:0:0:0:0:ffff:7bff:5b70
123.255.91.113 0:0:0:0:0:ffff:7bff:5b71
123.255.91.114 0:0:0:0:0:ffff:7bff:5b72
123.255.91.115 0:0:0:0:0:ffff:7bff:5b73
123.255.91.116 0:0:0:0:0:ffff:7bff:5b74
123.255.91.117 0:0:0:0:0:ffff:7bff:5b75
123.255.91.118 0:0:0:0:0:ffff:7bff:5b76
123.255.91.119 0:0:0:0:0:ffff:7bff:5b77
123.255.91.120 0:0:0:0:0:ffff:7bff:5b78


123.255.91.121 0:0:0:0:0:ffff:7bff:5b79
123.255.91.122 0:0:0:0:0:ffff:7bff:5b7a
123.255.91.123 0:0:0:0:0:ffff:7bff:5b7b
123.255.91.124 0:0:0:0:0:ffff:7bff:5b7c
123.255.91.125 0:0:0:0:0:ffff:7bff:5b7d
123.255.91.126 0:0:0:0:0:ffff:7bff:5b7e
123.255.91.127 0:0:0:0:0:ffff:7bff:5b7f
123.255.91.128 0:0:0:0:0:ffff:7bff:5b80
123.255.91.129 0:0:0:0:0:ffff:7bff:5b81
123.255.91.130 0:0:0:0:0:ffff:7bff:5b82
123.255.91.131 0:0:0:0:0:ffff:7bff:5b83
123.255.91.132 0:0:0:0:0:ffff:7bff:5b84
123.255.91.133 0:0:0:0:0:ffff:7bff:5b85
123.255.91.134 0:0:0:0:0:ffff:7bff:5b86
123.255.91.135 0:0:0:0:0:ffff:7bff:5b87
123.255.91.136 0:0:0:0:0:ffff:7bff:5b88
123.255.91.137 0:0:0:0:0:ffff:7bff:5b89
123.255.91.138 0:0:0:0:0:ffff:7bff:5b8a
123.255.91.139 0:0:0:0:0:ffff:7bff:5b8b
123.255.91.140 0:0:0:0:0:ffff:7bff:5b8c
123.255.91.141 0:0:0:0:0:ffff:7bff:5b8d
123.255.91.142 0:0:0:0:0:ffff:7bff:5b8e
123.255.91.143 0:0:0:0:0:ffff:7bff:5b8f
123.255.91.144 0:0:0:0:0:ffff:7bff:5b90
123.255.91.145 0:0:0:0:0:ffff:7bff:5b91
123.255.91.146 0:0:0:0:0:ffff:7bff:5b92
123.255.91.147 0:0:0:0:0:ffff:7bff:5b93
123.255.91.148 0:0:0:0:0:ffff:7bff:5b94
123.255.91.149 0:0:0:0:0:ffff:7bff:5b95
123.255.91.150 0:0:0:0:0:ffff:7bff:5b96
123.255.91.151 0:0:0:0:0:ffff:7bff:5b97
123.255.91.152 0:0:0:0:0:ffff:7bff:5b98
123.255.91.153 0:0:0:0:0:ffff:7bff:5b99
123.255.91.154 0:0:0:0:0:ffff:7bff:5b9a
123.255.91.155 0:0:0:0:0:ffff:7bff:5b9b
123.255.91.156 0:0:0:0:0:ffff:7bff:5b9c
123.255.91.157 0:0:0:0:0:ffff:7bff:5b9d
123.255.91.158 0:0:0:0:0:ffff:7bff:5b9e
123.255.91.159 0:0:0:0:0:ffff:7bff:5b9f
123.255.91.160 0:0:0:0:0:ffff:7bff:5ba0
123.255.91.161 0:0:0:0:0:ffff:7bff:5ba1
123.255.91.162 0:0:0:0:0:ffff:7bff:5ba2
123.255.91.163 0:0:0:0:0:ffff:7bff:5ba3
123.255.91.164 0:0:0:0:0:ffff:7bff:5ba4
123.255.91.165 0:0:0:0:0:ffff:7bff:5ba5
123.255.91.166 0:0:0:0:0:ffff:7bff:5ba6
123.255.91.167 0:0:0:0:0:ffff:7bff:5ba7
123.255.91.168 0:0:0:0:0:ffff:7bff:5ba8
123.255.91.169 0:0:0:0:0:ffff:7bff:5ba9
123.255.91.170 0:0:0:0:0:ffff:7bff:5baa
123.255.91.171 0:0:0:0:0:ffff:7bff:5bab
123.255.91.172 0:0:0:0:0:ffff:7bff:5bac
123.255.91.173 0:0:0:0:0:ffff:7bff:5bad
123.255.91.174 0:0:0:0:0:ffff:7bff:5bae
123.255.91.175 0:0:0:0:0:ffff:7bff:5baf
123.255.91.176 0:0:0:0:0:ffff:7bff:5bb0
123.255.91.177 0:0:0:0:0:ffff:7bff:5bb1
123.255.91.178 0:0:0:0:0:ffff:7bff:5bb2
123.255.91.179 0:0:0:0:0:ffff:7bff:5bb3
123.255.91.180 0:0:0:0:0:ffff:7bff:5bb4


123.255.91.181 0:0:0:0:0:ffff:7bff:5bb5
123.255.91.182 0:0:0:0:0:ffff:7bff:5bb6
123.255.91.183 0:0:0:0:0:ffff:7bff:5bb7
123.255.91.184 0:0:0:0:0:ffff:7bff:5bb8
123.255.91.185 0:0:0:0:0:ffff:7bff:5bb9
123.255.91.186 0:0:0:0:0:ffff:7bff:5bba
123.255.91.187 0:0:0:0:0:ffff:7bff:5bbb
123.255.91.188 0:0:0:0:0:ffff:7bff:5bbc
123.255.91.189 0:0:0:0:0:ffff:7bff:5bbd
123.255.91.190 0:0:0:0:0:ffff:7bff:5bbe
123.255.91.191 0:0:0:0:0:ffff:7bff:5bbf
123.255.91.192 0:0:0:0:0:ffff:7bff:5bc0
123.255.91.193 0:0:0:0:0:ffff:7bff:5bc1
123.255.91.194 0:0:0:0:0:ffff:7bff:5bc2
123.255.91.195 0:0:0:0:0:ffff:7bff:5bc3
123.255.91.196 0:0:0:0:0:ffff:7bff:5bc4
123.255.91.197 0:0:0:0:0:ffff:7bff:5bc5
123.255.91.198 0:0:0:0:0:ffff:7bff:5bc6
123.255.91.199 0:0:0:0:0:ffff:7bff:5bc7
123.255.91.200 0:0:0:0:0:ffff:7bff:5bc8
123.255.91.201 0:0:0:0:0:ffff:7bff:5bc9
123.255.91.202 0:0:0:0:0:ffff:7bff:5bca
123.255.91.203 0:0:0:0:0:ffff:7bff:5bcb
123.255.91.204 0:0:0:0:0:ffff:7bff:5bcc
123.255.91.205 0:0:0:0:0:ffff:7bff:5bcd
123.255.91.206 0:0:0:0:0:ffff:7bff:5bce
123.255.91.207 0:0:0:0:0:ffff:7bff:5bcf
123.255.91.208 0:0:0:0:0:ffff:7bff:5bd0
123.255.91.209 0:0:0:0:0:ffff:7bff:5bd1
123.255.91.210 0:0:0:0:0:ffff:7bff:5bd2
123.255.91.211 0:0:0:0:0:ffff:7bff:5bd3
123.255.91.212 0:0:0:0:0:ffff:7bff:5bd4
123.255.91.213 0:0:0:0:0:ffff:7bff:5bd5
123.255.91.214 0:0:0:0:0:ffff:7bff:5bd6
123.255.91.215 0:0:0:0:0:ffff:7bff:5bd7
123.255.91.216 0:0:0:0:0:ffff:7bff:5bd8
123.255.91.217 0:0:0:0:0:ffff:7bff:5bd9
123.255.91.218 0:0:0:0:0:ffff:7bff:5bda
123.255.91.219 0:0:0:0:0:ffff:7bff:5bdb
123.255.91.220 0:0:0:0:0:ffff:7bff:5bdc
123.255.91.221 0:0:0:0:0:ffff:7bff:5bdd
123.255.91.222 0:0:0:0:0:ffff:7bff:5bde
123.255.91.223 0:0:0:0:0:ffff:7bff:5bdf
123.255.91.224 0:0:0:0:0:ffff:7bff:5be0
123.255.91.225 0:0:0:0:0:ffff:7bff:5be1
123.255.91.226 0:0:0:0:0:ffff:7bff:5be2
123.255.91.227 0:0:0:0:0:ffff:7bff:5be3
123.255.91.228 0:0:0:0:0:ffff:7bff:5be4
123.255.91.229 0:0:0:0:0:ffff:7bff:5be5
123.255.91.230 0:0:0:0:0:ffff:7bff:5be6
123.255.91.231 0:0:0:0:0:ffff:7bff:5be7
123.255.91.232 0:0:0:0:0:ffff:7bff:5be8
123.255.91.233 0:0:0:0:0:ffff:7bff:5be9
123.255.91.234 0:0:0:0:0:ffff:7bff:5bea
123.255.91.235 0:0:0:0:0:ffff:7bff:5beb
123.255.91.236 0:0:0:0:0:ffff:7bff:5bec
123.255.91.237 0:0:0:0:0:ffff:7bff:5bed
123.255.91.238 0:0:0:0:0:ffff:7bff:5bee
123.255.91.239 0:0:0:0:0:ffff:7bff:5bef
123.255.91.240 0:0:0:0:0:ffff:7bff:5bf0
123.255.91.241 0:0:0:0:0:ffff:7bff:5bf1
123.255.91.242 0:0:0:0:0:ffff:7bff:5bf2
123.255.91.243 0:0:0:0:0:ffff:7bff:5bf3
123.255.91.244 0:0:0:0:0:ffff:7bff:5bf4
123.255.91.245 0:0:0:0:0:ffff:7bff:5bf5
123.255.91.246 0:0:0:0:0:ffff:7bff:5bf6
123.255.91.247 0:0:0:0:0:ffff:7bff:5bf7
123.255.91.248 0:0:0:0:0:ffff:7bff:5bf8
123.255.91.249 0:0:0:0:0:ffff:7bff:5bf9
123.255.91.250 0:0:0:0:0:ffff:7bff:5bfa
123.255.91.251 0:0:0:0:0:ffff:7bff:5bfb
123.255.91.252 0:0:0:0:0:ffff:7bff:5bfc
123.255.91.253 0:0:0:0:0:ffff:7bff:5bfd
123.255.91.254 0:0:0:0:0:ffff:7bff:5bfe
123.255.91.255 0:0:0:0:0:ffff:7bff:5bff


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.