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
143.243.123.1 0:0:0:0:0:ffff:8ff3:7b01
143.243.123.2 0:0:0:0:0:ffff:8ff3:7b02
143.243.123.3 0:0:0:0:0:ffff:8ff3:7b03
143.243.123.4 0:0:0:0:0:ffff:8ff3:7b04
143.243.123.5 0:0:0:0:0:ffff:8ff3:7b05
143.243.123.6 0:0:0:0:0:ffff:8ff3:7b06
143.243.123.7 0:0:0:0:0:ffff:8ff3:7b07
143.243.123.8 0:0:0:0:0:ffff:8ff3:7b08
143.243.123.9 0:0:0:0:0:ffff:8ff3:7b09
143.243.123.10 0:0:0:0:0:ffff:8ff3:7b0a
143.243.123.11 0:0:0:0:0:ffff:8ff3:7b0b
143.243.123.12 0:0:0:0:0:ffff:8ff3:7b0c
143.243.123.13 0:0:0:0:0:ffff:8ff3:7b0d
143.243.123.14 0:0:0:0:0:ffff:8ff3:7b0e
143.243.123.15 0:0:0:0:0:ffff:8ff3:7b0f
143.243.123.16 0:0:0:0:0:ffff:8ff3:7b10
143.243.123.17 0:0:0:0:0:ffff:8ff3:7b11
143.243.123.18 0:0:0:0:0:ffff:8ff3:7b12
143.243.123.19 0:0:0:0:0:ffff:8ff3:7b13
143.243.123.20 0:0:0:0:0:ffff:8ff3:7b14
143.243.123.21 0:0:0:0:0:ffff:8ff3:7b15
143.243.123.22 0:0:0:0:0:ffff:8ff3:7b16
143.243.123.23 0:0:0:0:0:ffff:8ff3:7b17
143.243.123.24 0:0:0:0:0:ffff:8ff3:7b18
143.243.123.25 0:0:0:0:0:ffff:8ff3:7b19
143.243.123.26 0:0:0:0:0:ffff:8ff3:7b1a
143.243.123.27 0:0:0:0:0:ffff:8ff3:7b1b
143.243.123.28 0:0:0:0:0:ffff:8ff3:7b1c
143.243.123.29 0:0:0:0:0:ffff:8ff3:7b1d
143.243.123.30 0:0:0:0:0:ffff:8ff3:7b1e
143.243.123.31 0:0:0:0:0:ffff:8ff3:7b1f
143.243.123.32 0:0:0:0:0:ffff:8ff3:7b20
143.243.123.33 0:0:0:0:0:ffff:8ff3:7b21
143.243.123.34 0:0:0:0:0:ffff:8ff3:7b22
143.243.123.35 0:0:0:0:0:ffff:8ff3:7b23
143.243.123.36 0:0:0:0:0:ffff:8ff3:7b24
143.243.123.37 0:0:0:0:0:ffff:8ff3:7b25
143.243.123.38 0:0:0:0:0:ffff:8ff3:7b26
143.243.123.39 0:0:0:0:0:ffff:8ff3:7b27
143.243.123.40 0:0:0:0:0:ffff:8ff3:7b28
143.243.123.41 0:0:0:0:0:ffff:8ff3:7b29
143.243.123.42 0:0:0:0:0:ffff:8ff3:7b2a
143.243.123.43 0:0:0:0:0:ffff:8ff3:7b2b
143.243.123.44 0:0:0:0:0:ffff:8ff3:7b2c
143.243.123.45 0:0:0:0:0:ffff:8ff3:7b2d
143.243.123.46 0:0:0:0:0:ffff:8ff3:7b2e
143.243.123.47 0:0:0:0:0:ffff:8ff3:7b2f
143.243.123.48 0:0:0:0:0:ffff:8ff3:7b30
143.243.123.49 0:0:0:0:0:ffff:8ff3:7b31
143.243.123.50 0:0:0:0:0:ffff:8ff3:7b32
143.243.123.51 0:0:0:0:0:ffff:8ff3:7b33
143.243.123.52 0:0:0:0:0:ffff:8ff3:7b34
143.243.123.53 0:0:0:0:0:ffff:8ff3:7b35
143.243.123.54 0:0:0:0:0:ffff:8ff3:7b36
143.243.123.55 0:0:0:0:0:ffff:8ff3:7b37
143.243.123.56 0:0:0:0:0:ffff:8ff3:7b38
143.243.123.57 0:0:0:0:0:ffff:8ff3:7b39
143.243.123.58 0:0:0:0:0:ffff:8ff3:7b3a
143.243.123.59 0:0:0:0:0:ffff:8ff3:7b3b
143.243.123.60 0:0:0:0:0:ffff:8ff3:7b3c


143.243.123.61 0:0:0:0:0:ffff:8ff3:7b3d
143.243.123.62 0:0:0:0:0:ffff:8ff3:7b3e
143.243.123.63 0:0:0:0:0:ffff:8ff3:7b3f
143.243.123.64 0:0:0:0:0:ffff:8ff3:7b40
143.243.123.65 0:0:0:0:0:ffff:8ff3:7b41
143.243.123.66 0:0:0:0:0:ffff:8ff3:7b42
143.243.123.67 0:0:0:0:0:ffff:8ff3:7b43
143.243.123.68 0:0:0:0:0:ffff:8ff3:7b44
143.243.123.69 0:0:0:0:0:ffff:8ff3:7b45
143.243.123.70 0:0:0:0:0:ffff:8ff3:7b46
143.243.123.71 0:0:0:0:0:ffff:8ff3:7b47
143.243.123.72 0:0:0:0:0:ffff:8ff3:7b48
143.243.123.73 0:0:0:0:0:ffff:8ff3:7b49
143.243.123.74 0:0:0:0:0:ffff:8ff3:7b4a
143.243.123.75 0:0:0:0:0:ffff:8ff3:7b4b
143.243.123.76 0:0:0:0:0:ffff:8ff3:7b4c
143.243.123.77 0:0:0:0:0:ffff:8ff3:7b4d
143.243.123.78 0:0:0:0:0:ffff:8ff3:7b4e
143.243.123.79 0:0:0:0:0:ffff:8ff3:7b4f
143.243.123.80 0:0:0:0:0:ffff:8ff3:7b50
143.243.123.81 0:0:0:0:0:ffff:8ff3:7b51
143.243.123.82 0:0:0:0:0:ffff:8ff3:7b52
143.243.123.83 0:0:0:0:0:ffff:8ff3:7b53
143.243.123.84 0:0:0:0:0:ffff:8ff3:7b54
143.243.123.85 0:0:0:0:0:ffff:8ff3:7b55
143.243.123.86 0:0:0:0:0:ffff:8ff3:7b56
143.243.123.87 0:0:0:0:0:ffff:8ff3:7b57
143.243.123.88 0:0:0:0:0:ffff:8ff3:7b58
143.243.123.89 0:0:0:0:0:ffff:8ff3:7b59
143.243.123.90 0:0:0:0:0:ffff:8ff3:7b5a
143.243.123.91 0:0:0:0:0:ffff:8ff3:7b5b
143.243.123.92 0:0:0:0:0:ffff:8ff3:7b5c
143.243.123.93 0:0:0:0:0:ffff:8ff3:7b5d
143.243.123.94 0:0:0:0:0:ffff:8ff3:7b5e
143.243.123.95 0:0:0:0:0:ffff:8ff3:7b5f
143.243.123.96 0:0:0:0:0:ffff:8ff3:7b60
143.243.123.97 0:0:0:0:0:ffff:8ff3:7b61
143.243.123.98 0:0:0:0:0:ffff:8ff3:7b62
143.243.123.99 0:0:0:0:0:ffff:8ff3:7b63
143.243.123.100 0:0:0:0:0:ffff:8ff3:7b64
143.243.123.101 0:0:0:0:0:ffff:8ff3:7b65
143.243.123.102 0:0:0:0:0:ffff:8ff3:7b66
143.243.123.103 0:0:0:0:0:ffff:8ff3:7b67
143.243.123.104 0:0:0:0:0:ffff:8ff3:7b68
143.243.123.105 0:0:0:0:0:ffff:8ff3:7b69
143.243.123.106 0:0:0:0:0:ffff:8ff3:7b6a
143.243.123.107 0:0:0:0:0:ffff:8ff3:7b6b
143.243.123.108 0:0:0:0:0:ffff:8ff3:7b6c
143.243.123.109 0:0:0:0:0:ffff:8ff3:7b6d
143.243.123.110 0:0:0:0:0:ffff:8ff3:7b6e
143.243.123.111 0:0:0:0:0:ffff:8ff3:7b6f
143.243.123.112 0:0:0:0:0:ffff:8ff3:7b70
143.243.123.113 0:0:0:0:0:ffff:8ff3:7b71
143.243.123.114 0:0:0:0:0:ffff:8ff3:7b72
143.243.123.115 0:0:0:0:0:ffff:8ff3:7b73
143.243.123.116 0:0:0:0:0:ffff:8ff3:7b74
143.243.123.117 0:0:0:0:0:ffff:8ff3:7b75
143.243.123.118 0:0:0:0:0:ffff:8ff3:7b76
143.243.123.119 0:0:0:0:0:ffff:8ff3:7b77
143.243.123.120 0:0:0:0:0:ffff:8ff3:7b78


143.243.123.121 0:0:0:0:0:ffff:8ff3:7b79
143.243.123.122 0:0:0:0:0:ffff:8ff3:7b7a
143.243.123.123 0:0:0:0:0:ffff:8ff3:7b7b
143.243.123.124 0:0:0:0:0:ffff:8ff3:7b7c
143.243.123.125 0:0:0:0:0:ffff:8ff3:7b7d
143.243.123.126 0:0:0:0:0:ffff:8ff3:7b7e
143.243.123.127 0:0:0:0:0:ffff:8ff3:7b7f
143.243.123.128 0:0:0:0:0:ffff:8ff3:7b80
143.243.123.129 0:0:0:0:0:ffff:8ff3:7b81
143.243.123.130 0:0:0:0:0:ffff:8ff3:7b82
143.243.123.131 0:0:0:0:0:ffff:8ff3:7b83
143.243.123.132 0:0:0:0:0:ffff:8ff3:7b84
143.243.123.133 0:0:0:0:0:ffff:8ff3:7b85
143.243.123.134 0:0:0:0:0:ffff:8ff3:7b86
143.243.123.135 0:0:0:0:0:ffff:8ff3:7b87
143.243.123.136 0:0:0:0:0:ffff:8ff3:7b88
143.243.123.137 0:0:0:0:0:ffff:8ff3:7b89
143.243.123.138 0:0:0:0:0:ffff:8ff3:7b8a
143.243.123.139 0:0:0:0:0:ffff:8ff3:7b8b
143.243.123.140 0:0:0:0:0:ffff:8ff3:7b8c
143.243.123.141 0:0:0:0:0:ffff:8ff3:7b8d
143.243.123.142 0:0:0:0:0:ffff:8ff3:7b8e
143.243.123.143 0:0:0:0:0:ffff:8ff3:7b8f
143.243.123.144 0:0:0:0:0:ffff:8ff3:7b90
143.243.123.145 0:0:0:0:0:ffff:8ff3:7b91
143.243.123.146 0:0:0:0:0:ffff:8ff3:7b92
143.243.123.147 0:0:0:0:0:ffff:8ff3:7b93
143.243.123.148 0:0:0:0:0:ffff:8ff3:7b94
143.243.123.149 0:0:0:0:0:ffff:8ff3:7b95
143.243.123.150 0:0:0:0:0:ffff:8ff3:7b96
143.243.123.151 0:0:0:0:0:ffff:8ff3:7b97
143.243.123.152 0:0:0:0:0:ffff:8ff3:7b98
143.243.123.153 0:0:0:0:0:ffff:8ff3:7b99
143.243.123.154 0:0:0:0:0:ffff:8ff3:7b9a
143.243.123.155 0:0:0:0:0:ffff:8ff3:7b9b
143.243.123.156 0:0:0:0:0:ffff:8ff3:7b9c
143.243.123.157 0:0:0:0:0:ffff:8ff3:7b9d
143.243.123.158 0:0:0:0:0:ffff:8ff3:7b9e
143.243.123.159 0:0:0:0:0:ffff:8ff3:7b9f
143.243.123.160 0:0:0:0:0:ffff:8ff3:7ba0
143.243.123.161 0:0:0:0:0:ffff:8ff3:7ba1
143.243.123.162 0:0:0:0:0:ffff:8ff3:7ba2
143.243.123.163 0:0:0:0:0:ffff:8ff3:7ba3
143.243.123.164 0:0:0:0:0:ffff:8ff3:7ba4
143.243.123.165 0:0:0:0:0:ffff:8ff3:7ba5
143.243.123.166 0:0:0:0:0:ffff:8ff3:7ba6
143.243.123.167 0:0:0:0:0:ffff:8ff3:7ba7
143.243.123.168 0:0:0:0:0:ffff:8ff3:7ba8
143.243.123.169 0:0:0:0:0:ffff:8ff3:7ba9
143.243.123.170 0:0:0:0:0:ffff:8ff3:7baa
143.243.123.171 0:0:0:0:0:ffff:8ff3:7bab
143.243.123.172 0:0:0:0:0:ffff:8ff3:7bac
143.243.123.173 0:0:0:0:0:ffff:8ff3:7bad
143.243.123.174 0:0:0:0:0:ffff:8ff3:7bae
143.243.123.175 0:0:0:0:0:ffff:8ff3:7baf
143.243.123.176 0:0:0:0:0:ffff:8ff3:7bb0
143.243.123.177 0:0:0:0:0:ffff:8ff3:7bb1
143.243.123.178 0:0:0:0:0:ffff:8ff3:7bb2
143.243.123.179 0:0:0:0:0:ffff:8ff3:7bb3
143.243.123.180 0:0:0:0:0:ffff:8ff3:7bb4


143.243.123.181 0:0:0:0:0:ffff:8ff3:7bb5
143.243.123.182 0:0:0:0:0:ffff:8ff3:7bb6
143.243.123.183 0:0:0:0:0:ffff:8ff3:7bb7
143.243.123.184 0:0:0:0:0:ffff:8ff3:7bb8
143.243.123.185 0:0:0:0:0:ffff:8ff3:7bb9
143.243.123.186 0:0:0:0:0:ffff:8ff3:7bba
143.243.123.187 0:0:0:0:0:ffff:8ff3:7bbb
143.243.123.188 0:0:0:0:0:ffff:8ff3:7bbc
143.243.123.189 0:0:0:0:0:ffff:8ff3:7bbd
143.243.123.190 0:0:0:0:0:ffff:8ff3:7bbe
143.243.123.191 0:0:0:0:0:ffff:8ff3:7bbf
143.243.123.192 0:0:0:0:0:ffff:8ff3:7bc0
143.243.123.193 0:0:0:0:0:ffff:8ff3:7bc1
143.243.123.194 0:0:0:0:0:ffff:8ff3:7bc2
143.243.123.195 0:0:0:0:0:ffff:8ff3:7bc3
143.243.123.196 0:0:0:0:0:ffff:8ff3:7bc4
143.243.123.197 0:0:0:0:0:ffff:8ff3:7bc5
143.243.123.198 0:0:0:0:0:ffff:8ff3:7bc6
143.243.123.199 0:0:0:0:0:ffff:8ff3:7bc7
143.243.123.200 0:0:0:0:0:ffff:8ff3:7bc8
143.243.123.201 0:0:0:0:0:ffff:8ff3:7bc9
143.243.123.202 0:0:0:0:0:ffff:8ff3:7bca
143.243.123.203 0:0:0:0:0:ffff:8ff3:7bcb
143.243.123.204 0:0:0:0:0:ffff:8ff3:7bcc
143.243.123.205 0:0:0:0:0:ffff:8ff3:7bcd
143.243.123.206 0:0:0:0:0:ffff:8ff3:7bce
143.243.123.207 0:0:0:0:0:ffff:8ff3:7bcf
143.243.123.208 0:0:0:0:0:ffff:8ff3:7bd0
143.243.123.209 0:0:0:0:0:ffff:8ff3:7bd1
143.243.123.210 0:0:0:0:0:ffff:8ff3:7bd2
143.243.123.211 0:0:0:0:0:ffff:8ff3:7bd3
143.243.123.212 0:0:0:0:0:ffff:8ff3:7bd4
143.243.123.213 0:0:0:0:0:ffff:8ff3:7bd5
143.243.123.214 0:0:0:0:0:ffff:8ff3:7bd6
143.243.123.215 0:0:0:0:0:ffff:8ff3:7bd7
143.243.123.216 0:0:0:0:0:ffff:8ff3:7bd8
143.243.123.217 0:0:0:0:0:ffff:8ff3:7bd9
143.243.123.218 0:0:0:0:0:ffff:8ff3:7bda
143.243.123.219 0:0:0:0:0:ffff:8ff3:7bdb
143.243.123.220 0:0:0:0:0:ffff:8ff3:7bdc
143.243.123.221 0:0:0:0:0:ffff:8ff3:7bdd
143.243.123.222 0:0:0:0:0:ffff:8ff3:7bde
143.243.123.223 0:0:0:0:0:ffff:8ff3:7bdf
143.243.123.224 0:0:0:0:0:ffff:8ff3:7be0
143.243.123.225 0:0:0:0:0:ffff:8ff3:7be1
143.243.123.226 0:0:0:0:0:ffff:8ff3:7be2
143.243.123.227 0:0:0:0:0:ffff:8ff3:7be3
143.243.123.228 0:0:0:0:0:ffff:8ff3:7be4
143.243.123.229 0:0:0:0:0:ffff:8ff3:7be5
143.243.123.230 0:0:0:0:0:ffff:8ff3:7be6
143.243.123.231 0:0:0:0:0:ffff:8ff3:7be7
143.243.123.232 0:0:0:0:0:ffff:8ff3:7be8
143.243.123.233 0:0:0:0:0:ffff:8ff3:7be9
143.243.123.234 0:0:0:0:0:ffff:8ff3:7bea
143.243.123.235 0:0:0:0:0:ffff:8ff3:7beb
143.243.123.236 0:0:0:0:0:ffff:8ff3:7bec
143.243.123.237 0:0:0:0:0:ffff:8ff3:7bed
143.243.123.238 0:0:0:0:0:ffff:8ff3:7bee
143.243.123.239 0:0:0:0:0:ffff:8ff3:7bef
143.243.123.240 0:0:0:0:0:ffff:8ff3:7bf0
143.243.123.241 0:0:0:0:0:ffff:8ff3:7bf1
143.243.123.242 0:0:0:0:0:ffff:8ff3:7bf2
143.243.123.243 0:0:0:0:0:ffff:8ff3:7bf3
143.243.123.244 0:0:0:0:0:ffff:8ff3:7bf4
143.243.123.245 0:0:0:0:0:ffff:8ff3:7bf5
143.243.123.246 0:0:0:0:0:ffff:8ff3:7bf6
143.243.123.247 0:0:0:0:0:ffff:8ff3:7bf7
143.243.123.248 0:0:0:0:0:ffff:8ff3:7bf8
143.243.123.249 0:0:0:0:0:ffff:8ff3:7bf9
143.243.123.250 0:0:0:0:0:ffff:8ff3:7bfa
143.243.123.251 0:0:0:0:0:ffff:8ff3:7bfb
143.243.123.252 0:0:0:0:0:ffff:8ff3:7bfc
143.243.123.253 0:0:0:0:0:ffff:8ff3:7bfd
143.243.123.254 0:0:0:0:0:ffff:8ff3:7bfe
143.243.123.255 0:0:0:0:0:ffff:8ff3:7bff


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.