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
203.153.91.1 0:0:0:0:0:ffff:cb99:5b01
203.153.91.2 0:0:0:0:0:ffff:cb99:5b02
203.153.91.3 0:0:0:0:0:ffff:cb99:5b03
203.153.91.4 0:0:0:0:0:ffff:cb99:5b04
203.153.91.5 0:0:0:0:0:ffff:cb99:5b05
203.153.91.6 0:0:0:0:0:ffff:cb99:5b06
203.153.91.7 0:0:0:0:0:ffff:cb99:5b07
203.153.91.8 0:0:0:0:0:ffff:cb99:5b08
203.153.91.9 0:0:0:0:0:ffff:cb99:5b09
203.153.91.10 0:0:0:0:0:ffff:cb99:5b0a
203.153.91.11 0:0:0:0:0:ffff:cb99:5b0b
203.153.91.12 0:0:0:0:0:ffff:cb99:5b0c
203.153.91.13 0:0:0:0:0:ffff:cb99:5b0d
203.153.91.14 0:0:0:0:0:ffff:cb99:5b0e
203.153.91.15 0:0:0:0:0:ffff:cb99:5b0f
203.153.91.16 0:0:0:0:0:ffff:cb99:5b10
203.153.91.17 0:0:0:0:0:ffff:cb99:5b11
203.153.91.18 0:0:0:0:0:ffff:cb99:5b12
203.153.91.19 0:0:0:0:0:ffff:cb99:5b13
203.153.91.20 0:0:0:0:0:ffff:cb99:5b14
203.153.91.21 0:0:0:0:0:ffff:cb99:5b15
203.153.91.22 0:0:0:0:0:ffff:cb99:5b16
203.153.91.23 0:0:0:0:0:ffff:cb99:5b17
203.153.91.24 0:0:0:0:0:ffff:cb99:5b18
203.153.91.25 0:0:0:0:0:ffff:cb99:5b19
203.153.91.26 0:0:0:0:0:ffff:cb99:5b1a
203.153.91.27 0:0:0:0:0:ffff:cb99:5b1b
203.153.91.28 0:0:0:0:0:ffff:cb99:5b1c
203.153.91.29 0:0:0:0:0:ffff:cb99:5b1d
203.153.91.30 0:0:0:0:0:ffff:cb99:5b1e
203.153.91.31 0:0:0:0:0:ffff:cb99:5b1f
203.153.91.32 0:0:0:0:0:ffff:cb99:5b20
203.153.91.33 0:0:0:0:0:ffff:cb99:5b21
203.153.91.34 0:0:0:0:0:ffff:cb99:5b22
203.153.91.35 0:0:0:0:0:ffff:cb99:5b23
203.153.91.36 0:0:0:0:0:ffff:cb99:5b24
203.153.91.37 0:0:0:0:0:ffff:cb99:5b25
203.153.91.38 0:0:0:0:0:ffff:cb99:5b26
203.153.91.39 0:0:0:0:0:ffff:cb99:5b27
203.153.91.40 0:0:0:0:0:ffff:cb99:5b28
203.153.91.41 0:0:0:0:0:ffff:cb99:5b29
203.153.91.42 0:0:0:0:0:ffff:cb99:5b2a
203.153.91.43 0:0:0:0:0:ffff:cb99:5b2b
203.153.91.44 0:0:0:0:0:ffff:cb99:5b2c
203.153.91.45 0:0:0:0:0:ffff:cb99:5b2d
203.153.91.46 0:0:0:0:0:ffff:cb99:5b2e
203.153.91.47 0:0:0:0:0:ffff:cb99:5b2f
203.153.91.48 0:0:0:0:0:ffff:cb99:5b30
203.153.91.49 0:0:0:0:0:ffff:cb99:5b31
203.153.91.50 0:0:0:0:0:ffff:cb99:5b32
203.153.91.51 0:0:0:0:0:ffff:cb99:5b33
203.153.91.52 0:0:0:0:0:ffff:cb99:5b34
203.153.91.53 0:0:0:0:0:ffff:cb99:5b35
203.153.91.54 0:0:0:0:0:ffff:cb99:5b36
203.153.91.55 0:0:0:0:0:ffff:cb99:5b37
203.153.91.56 0:0:0:0:0:ffff:cb99:5b38
203.153.91.57 0:0:0:0:0:ffff:cb99:5b39
203.153.91.58 0:0:0:0:0:ffff:cb99:5b3a
203.153.91.59 0:0:0:0:0:ffff:cb99:5b3b
203.153.91.60 0:0:0:0:0:ffff:cb99:5b3c


203.153.91.61 0:0:0:0:0:ffff:cb99:5b3d
203.153.91.62 0:0:0:0:0:ffff:cb99:5b3e
203.153.91.63 0:0:0:0:0:ffff:cb99:5b3f
203.153.91.64 0:0:0:0:0:ffff:cb99:5b40
203.153.91.65 0:0:0:0:0:ffff:cb99:5b41
203.153.91.66 0:0:0:0:0:ffff:cb99:5b42
203.153.91.67 0:0:0:0:0:ffff:cb99:5b43
203.153.91.68 0:0:0:0:0:ffff:cb99:5b44
203.153.91.69 0:0:0:0:0:ffff:cb99:5b45
203.153.91.70 0:0:0:0:0:ffff:cb99:5b46
203.153.91.71 0:0:0:0:0:ffff:cb99:5b47
203.153.91.72 0:0:0:0:0:ffff:cb99:5b48
203.153.91.73 0:0:0:0:0:ffff:cb99:5b49
203.153.91.74 0:0:0:0:0:ffff:cb99:5b4a
203.153.91.75 0:0:0:0:0:ffff:cb99:5b4b
203.153.91.76 0:0:0:0:0:ffff:cb99:5b4c
203.153.91.77 0:0:0:0:0:ffff:cb99:5b4d
203.153.91.78 0:0:0:0:0:ffff:cb99:5b4e
203.153.91.79 0:0:0:0:0:ffff:cb99:5b4f
203.153.91.80 0:0:0:0:0:ffff:cb99:5b50
203.153.91.81 0:0:0:0:0:ffff:cb99:5b51
203.153.91.82 0:0:0:0:0:ffff:cb99:5b52
203.153.91.83 0:0:0:0:0:ffff:cb99:5b53
203.153.91.84 0:0:0:0:0:ffff:cb99:5b54
203.153.91.85 0:0:0:0:0:ffff:cb99:5b55
203.153.91.86 0:0:0:0:0:ffff:cb99:5b56
203.153.91.87 0:0:0:0:0:ffff:cb99:5b57
203.153.91.88 0:0:0:0:0:ffff:cb99:5b58
203.153.91.89 0:0:0:0:0:ffff:cb99:5b59
203.153.91.90 0:0:0:0:0:ffff:cb99:5b5a
203.153.91.91 0:0:0:0:0:ffff:cb99:5b5b
203.153.91.92 0:0:0:0:0:ffff:cb99:5b5c
203.153.91.93 0:0:0:0:0:ffff:cb99:5b5d
203.153.91.94 0:0:0:0:0:ffff:cb99:5b5e
203.153.91.95 0:0:0:0:0:ffff:cb99:5b5f
203.153.91.96 0:0:0:0:0:ffff:cb99:5b60
203.153.91.97 0:0:0:0:0:ffff:cb99:5b61
203.153.91.98 0:0:0:0:0:ffff:cb99:5b62
203.153.91.99 0:0:0:0:0:ffff:cb99:5b63
203.153.91.100 0:0:0:0:0:ffff:cb99:5b64
203.153.91.101 0:0:0:0:0:ffff:cb99:5b65
203.153.91.102 0:0:0:0:0:ffff:cb99:5b66
203.153.91.103 0:0:0:0:0:ffff:cb99:5b67
203.153.91.104 0:0:0:0:0:ffff:cb99:5b68
203.153.91.105 0:0:0:0:0:ffff:cb99:5b69
203.153.91.106 0:0:0:0:0:ffff:cb99:5b6a
203.153.91.107 0:0:0:0:0:ffff:cb99:5b6b
203.153.91.108 0:0:0:0:0:ffff:cb99:5b6c
203.153.91.109 0:0:0:0:0:ffff:cb99:5b6d
203.153.91.110 0:0:0:0:0:ffff:cb99:5b6e
203.153.91.111 0:0:0:0:0:ffff:cb99:5b6f
203.153.91.112 0:0:0:0:0:ffff:cb99:5b70
203.153.91.113 0:0:0:0:0:ffff:cb99:5b71
203.153.91.114 0:0:0:0:0:ffff:cb99:5b72
203.153.91.115 0:0:0:0:0:ffff:cb99:5b73
203.153.91.116 0:0:0:0:0:ffff:cb99:5b74
203.153.91.117 0:0:0:0:0:ffff:cb99:5b75
203.153.91.118 0:0:0:0:0:ffff:cb99:5b76
203.153.91.119 0:0:0:0:0:ffff:cb99:5b77
203.153.91.120 0:0:0:0:0:ffff:cb99:5b78


203.153.91.121 0:0:0:0:0:ffff:cb99:5b79
203.153.91.122 0:0:0:0:0:ffff:cb99:5b7a
203.153.91.123 0:0:0:0:0:ffff:cb99:5b7b
203.153.91.124 0:0:0:0:0:ffff:cb99:5b7c
203.153.91.125 0:0:0:0:0:ffff:cb99:5b7d
203.153.91.126 0:0:0:0:0:ffff:cb99:5b7e
203.153.91.127 0:0:0:0:0:ffff:cb99:5b7f
203.153.91.128 0:0:0:0:0:ffff:cb99:5b80
203.153.91.129 0:0:0:0:0:ffff:cb99:5b81
203.153.91.130 0:0:0:0:0:ffff:cb99:5b82
203.153.91.131 0:0:0:0:0:ffff:cb99:5b83
203.153.91.132 0:0:0:0:0:ffff:cb99:5b84
203.153.91.133 0:0:0:0:0:ffff:cb99:5b85
203.153.91.134 0:0:0:0:0:ffff:cb99:5b86
203.153.91.135 0:0:0:0:0:ffff:cb99:5b87
203.153.91.136 0:0:0:0:0:ffff:cb99:5b88
203.153.91.137 0:0:0:0:0:ffff:cb99:5b89
203.153.91.138 0:0:0:0:0:ffff:cb99:5b8a
203.153.91.139 0:0:0:0:0:ffff:cb99:5b8b
203.153.91.140 0:0:0:0:0:ffff:cb99:5b8c
203.153.91.141 0:0:0:0:0:ffff:cb99:5b8d
203.153.91.142 0:0:0:0:0:ffff:cb99:5b8e
203.153.91.143 0:0:0:0:0:ffff:cb99:5b8f
203.153.91.144 0:0:0:0:0:ffff:cb99:5b90
203.153.91.145 0:0:0:0:0:ffff:cb99:5b91
203.153.91.146 0:0:0:0:0:ffff:cb99:5b92
203.153.91.147 0:0:0:0:0:ffff:cb99:5b93
203.153.91.148 0:0:0:0:0:ffff:cb99:5b94
203.153.91.149 0:0:0:0:0:ffff:cb99:5b95
203.153.91.150 0:0:0:0:0:ffff:cb99:5b96
203.153.91.151 0:0:0:0:0:ffff:cb99:5b97
203.153.91.152 0:0:0:0:0:ffff:cb99:5b98
203.153.91.153 0:0:0:0:0:ffff:cb99:5b99
203.153.91.154 0:0:0:0:0:ffff:cb99:5b9a
203.153.91.155 0:0:0:0:0:ffff:cb99:5b9b
203.153.91.156 0:0:0:0:0:ffff:cb99:5b9c
203.153.91.157 0:0:0:0:0:ffff:cb99:5b9d
203.153.91.158 0:0:0:0:0:ffff:cb99:5b9e
203.153.91.159 0:0:0:0:0:ffff:cb99:5b9f
203.153.91.160 0:0:0:0:0:ffff:cb99:5ba0
203.153.91.161 0:0:0:0:0:ffff:cb99:5ba1
203.153.91.162 0:0:0:0:0:ffff:cb99:5ba2
203.153.91.163 0:0:0:0:0:ffff:cb99:5ba3
203.153.91.164 0:0:0:0:0:ffff:cb99:5ba4
203.153.91.165 0:0:0:0:0:ffff:cb99:5ba5
203.153.91.166 0:0:0:0:0:ffff:cb99:5ba6
203.153.91.167 0:0:0:0:0:ffff:cb99:5ba7
203.153.91.168 0:0:0:0:0:ffff:cb99:5ba8
203.153.91.169 0:0:0:0:0:ffff:cb99:5ba9
203.153.91.170 0:0:0:0:0:ffff:cb99:5baa
203.153.91.171 0:0:0:0:0:ffff:cb99:5bab
203.153.91.172 0:0:0:0:0:ffff:cb99:5bac
203.153.91.173 0:0:0:0:0:ffff:cb99:5bad
203.153.91.174 0:0:0:0:0:ffff:cb99:5bae
203.153.91.175 0:0:0:0:0:ffff:cb99:5baf
203.153.91.176 0:0:0:0:0:ffff:cb99:5bb0
203.153.91.177 0:0:0:0:0:ffff:cb99:5bb1
203.153.91.178 0:0:0:0:0:ffff:cb99:5bb2
203.153.91.179 0:0:0:0:0:ffff:cb99:5bb3
203.153.91.180 0:0:0:0:0:ffff:cb99:5bb4


203.153.91.181 0:0:0:0:0:ffff:cb99:5bb5
203.153.91.182 0:0:0:0:0:ffff:cb99:5bb6
203.153.91.183 0:0:0:0:0:ffff:cb99:5bb7
203.153.91.184 0:0:0:0:0:ffff:cb99:5bb8
203.153.91.185 0:0:0:0:0:ffff:cb99:5bb9
203.153.91.186 0:0:0:0:0:ffff:cb99:5bba
203.153.91.187 0:0:0:0:0:ffff:cb99:5bbb
203.153.91.188 0:0:0:0:0:ffff:cb99:5bbc
203.153.91.189 0:0:0:0:0:ffff:cb99:5bbd
203.153.91.190 0:0:0:0:0:ffff:cb99:5bbe
203.153.91.191 0:0:0:0:0:ffff:cb99:5bbf
203.153.91.192 0:0:0:0:0:ffff:cb99:5bc0
203.153.91.193 0:0:0:0:0:ffff:cb99:5bc1
203.153.91.194 0:0:0:0:0:ffff:cb99:5bc2
203.153.91.195 0:0:0:0:0:ffff:cb99:5bc3
203.153.91.196 0:0:0:0:0:ffff:cb99:5bc4
203.153.91.197 0:0:0:0:0:ffff:cb99:5bc5
203.153.91.198 0:0:0:0:0:ffff:cb99:5bc6
203.153.91.199 0:0:0:0:0:ffff:cb99:5bc7
203.153.91.200 0:0:0:0:0:ffff:cb99:5bc8
203.153.91.201 0:0:0:0:0:ffff:cb99:5bc9
203.153.91.202 0:0:0:0:0:ffff:cb99:5bca
203.153.91.203 0:0:0:0:0:ffff:cb99:5bcb
203.153.91.204 0:0:0:0:0:ffff:cb99:5bcc
203.153.91.205 0:0:0:0:0:ffff:cb99:5bcd
203.153.91.206 0:0:0:0:0:ffff:cb99:5bce
203.153.91.207 0:0:0:0:0:ffff:cb99:5bcf
203.153.91.208 0:0:0:0:0:ffff:cb99:5bd0
203.153.91.209 0:0:0:0:0:ffff:cb99:5bd1
203.153.91.210 0:0:0:0:0:ffff:cb99:5bd2
203.153.91.211 0:0:0:0:0:ffff:cb99:5bd3
203.153.91.212 0:0:0:0:0:ffff:cb99:5bd4
203.153.91.213 0:0:0:0:0:ffff:cb99:5bd5
203.153.91.214 0:0:0:0:0:ffff:cb99:5bd6
203.153.91.215 0:0:0:0:0:ffff:cb99:5bd7
203.153.91.216 0:0:0:0:0:ffff:cb99:5bd8
203.153.91.217 0:0:0:0:0:ffff:cb99:5bd9
203.153.91.218 0:0:0:0:0:ffff:cb99:5bda
203.153.91.219 0:0:0:0:0:ffff:cb99:5bdb
203.153.91.220 0:0:0:0:0:ffff:cb99:5bdc
203.153.91.221 0:0:0:0:0:ffff:cb99:5bdd
203.153.91.222 0:0:0:0:0:ffff:cb99:5bde
203.153.91.223 0:0:0:0:0:ffff:cb99:5bdf
203.153.91.224 0:0:0:0:0:ffff:cb99:5be0
203.153.91.225 0:0:0:0:0:ffff:cb99:5be1
203.153.91.226 0:0:0:0:0:ffff:cb99:5be2
203.153.91.227 0:0:0:0:0:ffff:cb99:5be3
203.153.91.228 0:0:0:0:0:ffff:cb99:5be4
203.153.91.229 0:0:0:0:0:ffff:cb99:5be5
203.153.91.230 0:0:0:0:0:ffff:cb99:5be6
203.153.91.231 0:0:0:0:0:ffff:cb99:5be7
203.153.91.232 0:0:0:0:0:ffff:cb99:5be8
203.153.91.233 0:0:0:0:0:ffff:cb99:5be9
203.153.91.234 0:0:0:0:0:ffff:cb99:5bea
203.153.91.235 0:0:0:0:0:ffff:cb99:5beb
203.153.91.236 0:0:0:0:0:ffff:cb99:5bec
203.153.91.237 0:0:0:0:0:ffff:cb99:5bed
203.153.91.238 0:0:0:0:0:ffff:cb99:5bee
203.153.91.239 0:0:0:0:0:ffff:cb99:5bef
203.153.91.240 0:0:0:0:0:ffff:cb99:5bf0
203.153.91.241 0:0:0:0:0:ffff:cb99:5bf1
203.153.91.242 0:0:0:0:0:ffff:cb99:5bf2
203.153.91.243 0:0:0:0:0:ffff:cb99:5bf3
203.153.91.244 0:0:0:0:0:ffff:cb99:5bf4
203.153.91.245 0:0:0:0:0:ffff:cb99:5bf5
203.153.91.246 0:0:0:0:0:ffff:cb99:5bf6
203.153.91.247 0:0:0:0:0:ffff:cb99:5bf7
203.153.91.248 0:0:0:0:0:ffff:cb99:5bf8
203.153.91.249 0:0:0:0:0:ffff:cb99:5bf9
203.153.91.250 0:0:0:0:0:ffff:cb99:5bfa
203.153.91.251 0:0:0:0:0:ffff:cb99:5bfb
203.153.91.252 0:0:0:0:0:ffff:cb99:5bfc
203.153.91.253 0:0:0:0:0:ffff:cb99:5bfd
203.153.91.254 0:0:0:0:0:ffff:cb99:5bfe
203.153.91.255 0:0:0:0:0:ffff:cb99:5bff


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.