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
43.4.123.1 0:0:0:0:0:ffff:2b04:7b01
43.4.123.2 0:0:0:0:0:ffff:2b04:7b02
43.4.123.3 0:0:0:0:0:ffff:2b04:7b03
43.4.123.4 0:0:0:0:0:ffff:2b04:7b04
43.4.123.5 0:0:0:0:0:ffff:2b04:7b05
43.4.123.6 0:0:0:0:0:ffff:2b04:7b06
43.4.123.7 0:0:0:0:0:ffff:2b04:7b07
43.4.123.8 0:0:0:0:0:ffff:2b04:7b08
43.4.123.9 0:0:0:0:0:ffff:2b04:7b09
43.4.123.10 0:0:0:0:0:ffff:2b04:7b0a
43.4.123.11 0:0:0:0:0:ffff:2b04:7b0b
43.4.123.12 0:0:0:0:0:ffff:2b04:7b0c
43.4.123.13 0:0:0:0:0:ffff:2b04:7b0d
43.4.123.14 0:0:0:0:0:ffff:2b04:7b0e
43.4.123.15 0:0:0:0:0:ffff:2b04:7b0f
43.4.123.16 0:0:0:0:0:ffff:2b04:7b10
43.4.123.17 0:0:0:0:0:ffff:2b04:7b11
43.4.123.18 0:0:0:0:0:ffff:2b04:7b12
43.4.123.19 0:0:0:0:0:ffff:2b04:7b13
43.4.123.20 0:0:0:0:0:ffff:2b04:7b14
43.4.123.21 0:0:0:0:0:ffff:2b04:7b15
43.4.123.22 0:0:0:0:0:ffff:2b04:7b16
43.4.123.23 0:0:0:0:0:ffff:2b04:7b17
43.4.123.24 0:0:0:0:0:ffff:2b04:7b18
43.4.123.25 0:0:0:0:0:ffff:2b04:7b19
43.4.123.26 0:0:0:0:0:ffff:2b04:7b1a
43.4.123.27 0:0:0:0:0:ffff:2b04:7b1b
43.4.123.28 0:0:0:0:0:ffff:2b04:7b1c
43.4.123.29 0:0:0:0:0:ffff:2b04:7b1d
43.4.123.30 0:0:0:0:0:ffff:2b04:7b1e
43.4.123.31 0:0:0:0:0:ffff:2b04:7b1f
43.4.123.32 0:0:0:0:0:ffff:2b04:7b20
43.4.123.33 0:0:0:0:0:ffff:2b04:7b21
43.4.123.34 0:0:0:0:0:ffff:2b04:7b22
43.4.123.35 0:0:0:0:0:ffff:2b04:7b23
43.4.123.36 0:0:0:0:0:ffff:2b04:7b24
43.4.123.37 0:0:0:0:0:ffff:2b04:7b25
43.4.123.38 0:0:0:0:0:ffff:2b04:7b26
43.4.123.39 0:0:0:0:0:ffff:2b04:7b27
43.4.123.40 0:0:0:0:0:ffff:2b04:7b28
43.4.123.41 0:0:0:0:0:ffff:2b04:7b29
43.4.123.42 0:0:0:0:0:ffff:2b04:7b2a
43.4.123.43 0:0:0:0:0:ffff:2b04:7b2b
43.4.123.44 0:0:0:0:0:ffff:2b04:7b2c
43.4.123.45 0:0:0:0:0:ffff:2b04:7b2d
43.4.123.46 0:0:0:0:0:ffff:2b04:7b2e
43.4.123.47 0:0:0:0:0:ffff:2b04:7b2f
43.4.123.48 0:0:0:0:0:ffff:2b04:7b30
43.4.123.49 0:0:0:0:0:ffff:2b04:7b31
43.4.123.50 0:0:0:0:0:ffff:2b04:7b32
43.4.123.51 0:0:0:0:0:ffff:2b04:7b33
43.4.123.52 0:0:0:0:0:ffff:2b04:7b34
43.4.123.53 0:0:0:0:0:ffff:2b04:7b35
43.4.123.54 0:0:0:0:0:ffff:2b04:7b36
43.4.123.55 0:0:0:0:0:ffff:2b04:7b37
43.4.123.56 0:0:0:0:0:ffff:2b04:7b38
43.4.123.57 0:0:0:0:0:ffff:2b04:7b39
43.4.123.58 0:0:0:0:0:ffff:2b04:7b3a
43.4.123.59 0:0:0:0:0:ffff:2b04:7b3b
43.4.123.60 0:0:0:0:0:ffff:2b04:7b3c


43.4.123.61 0:0:0:0:0:ffff:2b04:7b3d
43.4.123.62 0:0:0:0:0:ffff:2b04:7b3e
43.4.123.63 0:0:0:0:0:ffff:2b04:7b3f
43.4.123.64 0:0:0:0:0:ffff:2b04:7b40
43.4.123.65 0:0:0:0:0:ffff:2b04:7b41
43.4.123.66 0:0:0:0:0:ffff:2b04:7b42
43.4.123.67 0:0:0:0:0:ffff:2b04:7b43
43.4.123.68 0:0:0:0:0:ffff:2b04:7b44
43.4.123.69 0:0:0:0:0:ffff:2b04:7b45
43.4.123.70 0:0:0:0:0:ffff:2b04:7b46
43.4.123.71 0:0:0:0:0:ffff:2b04:7b47
43.4.123.72 0:0:0:0:0:ffff:2b04:7b48
43.4.123.73 0:0:0:0:0:ffff:2b04:7b49
43.4.123.74 0:0:0:0:0:ffff:2b04:7b4a
43.4.123.75 0:0:0:0:0:ffff:2b04:7b4b
43.4.123.76 0:0:0:0:0:ffff:2b04:7b4c
43.4.123.77 0:0:0:0:0:ffff:2b04:7b4d
43.4.123.78 0:0:0:0:0:ffff:2b04:7b4e
43.4.123.79 0:0:0:0:0:ffff:2b04:7b4f
43.4.123.80 0:0:0:0:0:ffff:2b04:7b50
43.4.123.81 0:0:0:0:0:ffff:2b04:7b51
43.4.123.82 0:0:0:0:0:ffff:2b04:7b52
43.4.123.83 0:0:0:0:0:ffff:2b04:7b53
43.4.123.84 0:0:0:0:0:ffff:2b04:7b54
43.4.123.85 0:0:0:0:0:ffff:2b04:7b55
43.4.123.86 0:0:0:0:0:ffff:2b04:7b56
43.4.123.87 0:0:0:0:0:ffff:2b04:7b57
43.4.123.88 0:0:0:0:0:ffff:2b04:7b58
43.4.123.89 0:0:0:0:0:ffff:2b04:7b59
43.4.123.90 0:0:0:0:0:ffff:2b04:7b5a
43.4.123.91 0:0:0:0:0:ffff:2b04:7b5b
43.4.123.92 0:0:0:0:0:ffff:2b04:7b5c
43.4.123.93 0:0:0:0:0:ffff:2b04:7b5d
43.4.123.94 0:0:0:0:0:ffff:2b04:7b5e
43.4.123.95 0:0:0:0:0:ffff:2b04:7b5f
43.4.123.96 0:0:0:0:0:ffff:2b04:7b60
43.4.123.97 0:0:0:0:0:ffff:2b04:7b61
43.4.123.98 0:0:0:0:0:ffff:2b04:7b62
43.4.123.99 0:0:0:0:0:ffff:2b04:7b63
43.4.123.100 0:0:0:0:0:ffff:2b04:7b64
43.4.123.101 0:0:0:0:0:ffff:2b04:7b65
43.4.123.102 0:0:0:0:0:ffff:2b04:7b66
43.4.123.103 0:0:0:0:0:ffff:2b04:7b67
43.4.123.104 0:0:0:0:0:ffff:2b04:7b68
43.4.123.105 0:0:0:0:0:ffff:2b04:7b69
43.4.123.106 0:0:0:0:0:ffff:2b04:7b6a
43.4.123.107 0:0:0:0:0:ffff:2b04:7b6b
43.4.123.108 0:0:0:0:0:ffff:2b04:7b6c
43.4.123.109 0:0:0:0:0:ffff:2b04:7b6d
43.4.123.110 0:0:0:0:0:ffff:2b04:7b6e
43.4.123.111 0:0:0:0:0:ffff:2b04:7b6f
43.4.123.112 0:0:0:0:0:ffff:2b04:7b70
43.4.123.113 0:0:0:0:0:ffff:2b04:7b71
43.4.123.114 0:0:0:0:0:ffff:2b04:7b72
43.4.123.115 0:0:0:0:0:ffff:2b04:7b73
43.4.123.116 0:0:0:0:0:ffff:2b04:7b74
43.4.123.117 0:0:0:0:0:ffff:2b04:7b75
43.4.123.118 0:0:0:0:0:ffff:2b04:7b76
43.4.123.119 0:0:0:0:0:ffff:2b04:7b77
43.4.123.120 0:0:0:0:0:ffff:2b04:7b78


43.4.123.121 0:0:0:0:0:ffff:2b04:7b79
43.4.123.122 0:0:0:0:0:ffff:2b04:7b7a
43.4.123.123 0:0:0:0:0:ffff:2b04:7b7b
43.4.123.124 0:0:0:0:0:ffff:2b04:7b7c
43.4.123.125 0:0:0:0:0:ffff:2b04:7b7d
43.4.123.126 0:0:0:0:0:ffff:2b04:7b7e
43.4.123.127 0:0:0:0:0:ffff:2b04:7b7f
43.4.123.128 0:0:0:0:0:ffff:2b04:7b80
43.4.123.129 0:0:0:0:0:ffff:2b04:7b81
43.4.123.130 0:0:0:0:0:ffff:2b04:7b82
43.4.123.131 0:0:0:0:0:ffff:2b04:7b83
43.4.123.132 0:0:0:0:0:ffff:2b04:7b84
43.4.123.133 0:0:0:0:0:ffff:2b04:7b85
43.4.123.134 0:0:0:0:0:ffff:2b04:7b86
43.4.123.135 0:0:0:0:0:ffff:2b04:7b87
43.4.123.136 0:0:0:0:0:ffff:2b04:7b88
43.4.123.137 0:0:0:0:0:ffff:2b04:7b89
43.4.123.138 0:0:0:0:0:ffff:2b04:7b8a
43.4.123.139 0:0:0:0:0:ffff:2b04:7b8b
43.4.123.140 0:0:0:0:0:ffff:2b04:7b8c
43.4.123.141 0:0:0:0:0:ffff:2b04:7b8d
43.4.123.142 0:0:0:0:0:ffff:2b04:7b8e
43.4.123.143 0:0:0:0:0:ffff:2b04:7b8f
43.4.123.144 0:0:0:0:0:ffff:2b04:7b90
43.4.123.145 0:0:0:0:0:ffff:2b04:7b91
43.4.123.146 0:0:0:0:0:ffff:2b04:7b92
43.4.123.147 0:0:0:0:0:ffff:2b04:7b93
43.4.123.148 0:0:0:0:0:ffff:2b04:7b94
43.4.123.149 0:0:0:0:0:ffff:2b04:7b95
43.4.123.150 0:0:0:0:0:ffff:2b04:7b96
43.4.123.151 0:0:0:0:0:ffff:2b04:7b97
43.4.123.152 0:0:0:0:0:ffff:2b04:7b98
43.4.123.153 0:0:0:0:0:ffff:2b04:7b99
43.4.123.154 0:0:0:0:0:ffff:2b04:7b9a
43.4.123.155 0:0:0:0:0:ffff:2b04:7b9b
43.4.123.156 0:0:0:0:0:ffff:2b04:7b9c
43.4.123.157 0:0:0:0:0:ffff:2b04:7b9d
43.4.123.158 0:0:0:0:0:ffff:2b04:7b9e
43.4.123.159 0:0:0:0:0:ffff:2b04:7b9f
43.4.123.160 0:0:0:0:0:ffff:2b04:7ba0
43.4.123.161 0:0:0:0:0:ffff:2b04:7ba1
43.4.123.162 0:0:0:0:0:ffff:2b04:7ba2
43.4.123.163 0:0:0:0:0:ffff:2b04:7ba3
43.4.123.164 0:0:0:0:0:ffff:2b04:7ba4
43.4.123.165 0:0:0:0:0:ffff:2b04:7ba5
43.4.123.166 0:0:0:0:0:ffff:2b04:7ba6
43.4.123.167 0:0:0:0:0:ffff:2b04:7ba7
43.4.123.168 0:0:0:0:0:ffff:2b04:7ba8
43.4.123.169 0:0:0:0:0:ffff:2b04:7ba9
43.4.123.170 0:0:0:0:0:ffff:2b04:7baa
43.4.123.171 0:0:0:0:0:ffff:2b04:7bab
43.4.123.172 0:0:0:0:0:ffff:2b04:7bac
43.4.123.173 0:0:0:0:0:ffff:2b04:7bad
43.4.123.174 0:0:0:0:0:ffff:2b04:7bae
43.4.123.175 0:0:0:0:0:ffff:2b04:7baf
43.4.123.176 0:0:0:0:0:ffff:2b04:7bb0
43.4.123.177 0:0:0:0:0:ffff:2b04:7bb1
43.4.123.178 0:0:0:0:0:ffff:2b04:7bb2
43.4.123.179 0:0:0:0:0:ffff:2b04:7bb3
43.4.123.180 0:0:0:0:0:ffff:2b04:7bb4


43.4.123.181 0:0:0:0:0:ffff:2b04:7bb5
43.4.123.182 0:0:0:0:0:ffff:2b04:7bb6
43.4.123.183 0:0:0:0:0:ffff:2b04:7bb7
43.4.123.184 0:0:0:0:0:ffff:2b04:7bb8
43.4.123.185 0:0:0:0:0:ffff:2b04:7bb9
43.4.123.186 0:0:0:0:0:ffff:2b04:7bba
43.4.123.187 0:0:0:0:0:ffff:2b04:7bbb
43.4.123.188 0:0:0:0:0:ffff:2b04:7bbc
43.4.123.189 0:0:0:0:0:ffff:2b04:7bbd
43.4.123.190 0:0:0:0:0:ffff:2b04:7bbe
43.4.123.191 0:0:0:0:0:ffff:2b04:7bbf
43.4.123.192 0:0:0:0:0:ffff:2b04:7bc0
43.4.123.193 0:0:0:0:0:ffff:2b04:7bc1
43.4.123.194 0:0:0:0:0:ffff:2b04:7bc2
43.4.123.195 0:0:0:0:0:ffff:2b04:7bc3
43.4.123.196 0:0:0:0:0:ffff:2b04:7bc4
43.4.123.197 0:0:0:0:0:ffff:2b04:7bc5
43.4.123.198 0:0:0:0:0:ffff:2b04:7bc6
43.4.123.199 0:0:0:0:0:ffff:2b04:7bc7
43.4.123.200 0:0:0:0:0:ffff:2b04:7bc8
43.4.123.201 0:0:0:0:0:ffff:2b04:7bc9
43.4.123.202 0:0:0:0:0:ffff:2b04:7bca
43.4.123.203 0:0:0:0:0:ffff:2b04:7bcb
43.4.123.204 0:0:0:0:0:ffff:2b04:7bcc
43.4.123.205 0:0:0:0:0:ffff:2b04:7bcd
43.4.123.206 0:0:0:0:0:ffff:2b04:7bce
43.4.123.207 0:0:0:0:0:ffff:2b04:7bcf
43.4.123.208 0:0:0:0:0:ffff:2b04:7bd0
43.4.123.209 0:0:0:0:0:ffff:2b04:7bd1
43.4.123.210 0:0:0:0:0:ffff:2b04:7bd2
43.4.123.211 0:0:0:0:0:ffff:2b04:7bd3
43.4.123.212 0:0:0:0:0:ffff:2b04:7bd4
43.4.123.213 0:0:0:0:0:ffff:2b04:7bd5
43.4.123.214 0:0:0:0:0:ffff:2b04:7bd6
43.4.123.215 0:0:0:0:0:ffff:2b04:7bd7
43.4.123.216 0:0:0:0:0:ffff:2b04:7bd8
43.4.123.217 0:0:0:0:0:ffff:2b04:7bd9
43.4.123.218 0:0:0:0:0:ffff:2b04:7bda
43.4.123.219 0:0:0:0:0:ffff:2b04:7bdb
43.4.123.220 0:0:0:0:0:ffff:2b04:7bdc
43.4.123.221 0:0:0:0:0:ffff:2b04:7bdd
43.4.123.222 0:0:0:0:0:ffff:2b04:7bde
43.4.123.223 0:0:0:0:0:ffff:2b04:7bdf
43.4.123.224 0:0:0:0:0:ffff:2b04:7be0
43.4.123.225 0:0:0:0:0:ffff:2b04:7be1
43.4.123.226 0:0:0:0:0:ffff:2b04:7be2
43.4.123.227 0:0:0:0:0:ffff:2b04:7be3
43.4.123.228 0:0:0:0:0:ffff:2b04:7be4
43.4.123.229 0:0:0:0:0:ffff:2b04:7be5
43.4.123.230 0:0:0:0:0:ffff:2b04:7be6
43.4.123.231 0:0:0:0:0:ffff:2b04:7be7
43.4.123.232 0:0:0:0:0:ffff:2b04:7be8
43.4.123.233 0:0:0:0:0:ffff:2b04:7be9
43.4.123.234 0:0:0:0:0:ffff:2b04:7bea
43.4.123.235 0:0:0:0:0:ffff:2b04:7beb
43.4.123.236 0:0:0:0:0:ffff:2b04:7bec
43.4.123.237 0:0:0:0:0:ffff:2b04:7bed
43.4.123.238 0:0:0:0:0:ffff:2b04:7bee
43.4.123.239 0:0:0:0:0:ffff:2b04:7bef
43.4.123.240 0:0:0:0:0:ffff:2b04:7bf0
43.4.123.241 0:0:0:0:0:ffff:2b04:7bf1
43.4.123.242 0:0:0:0:0:ffff:2b04:7bf2
43.4.123.243 0:0:0:0:0:ffff:2b04:7bf3
43.4.123.244 0:0:0:0:0:ffff:2b04:7bf4
43.4.123.245 0:0:0:0:0:ffff:2b04:7bf5
43.4.123.246 0:0:0:0:0:ffff:2b04:7bf6
43.4.123.247 0:0:0:0:0:ffff:2b04:7bf7
43.4.123.248 0:0:0:0:0:ffff:2b04:7bf8
43.4.123.249 0:0:0:0:0:ffff:2b04:7bf9
43.4.123.250 0:0:0:0:0:ffff:2b04:7bfa
43.4.123.251 0:0:0:0:0:ffff:2b04:7bfb
43.4.123.252 0:0:0:0:0:ffff:2b04:7bfc
43.4.123.253 0:0:0:0:0:ffff:2b04:7bfd
43.4.123.254 0:0:0:0:0:ffff:2b04:7bfe
43.4.123.255 0:0:0:0:0:ffff:2b04:7bff


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.