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
127.57.123.1 0:0:0:0:0:ffff:7f39:7b01
127.57.123.2 0:0:0:0:0:ffff:7f39:7b02
127.57.123.3 0:0:0:0:0:ffff:7f39:7b03
127.57.123.4 0:0:0:0:0:ffff:7f39:7b04
127.57.123.5 0:0:0:0:0:ffff:7f39:7b05
127.57.123.6 0:0:0:0:0:ffff:7f39:7b06
127.57.123.7 0:0:0:0:0:ffff:7f39:7b07
127.57.123.8 0:0:0:0:0:ffff:7f39:7b08
127.57.123.9 0:0:0:0:0:ffff:7f39:7b09
127.57.123.10 0:0:0:0:0:ffff:7f39:7b0a
127.57.123.11 0:0:0:0:0:ffff:7f39:7b0b
127.57.123.12 0:0:0:0:0:ffff:7f39:7b0c
127.57.123.13 0:0:0:0:0:ffff:7f39:7b0d
127.57.123.14 0:0:0:0:0:ffff:7f39:7b0e
127.57.123.15 0:0:0:0:0:ffff:7f39:7b0f
127.57.123.16 0:0:0:0:0:ffff:7f39:7b10
127.57.123.17 0:0:0:0:0:ffff:7f39:7b11
127.57.123.18 0:0:0:0:0:ffff:7f39:7b12
127.57.123.19 0:0:0:0:0:ffff:7f39:7b13
127.57.123.20 0:0:0:0:0:ffff:7f39:7b14
127.57.123.21 0:0:0:0:0:ffff:7f39:7b15
127.57.123.22 0:0:0:0:0:ffff:7f39:7b16
127.57.123.23 0:0:0:0:0:ffff:7f39:7b17
127.57.123.24 0:0:0:0:0:ffff:7f39:7b18
127.57.123.25 0:0:0:0:0:ffff:7f39:7b19
127.57.123.26 0:0:0:0:0:ffff:7f39:7b1a
127.57.123.27 0:0:0:0:0:ffff:7f39:7b1b
127.57.123.28 0:0:0:0:0:ffff:7f39:7b1c
127.57.123.29 0:0:0:0:0:ffff:7f39:7b1d
127.57.123.30 0:0:0:0:0:ffff:7f39:7b1e
127.57.123.31 0:0:0:0:0:ffff:7f39:7b1f
127.57.123.32 0:0:0:0:0:ffff:7f39:7b20
127.57.123.33 0:0:0:0:0:ffff:7f39:7b21
127.57.123.34 0:0:0:0:0:ffff:7f39:7b22
127.57.123.35 0:0:0:0:0:ffff:7f39:7b23
127.57.123.36 0:0:0:0:0:ffff:7f39:7b24
127.57.123.37 0:0:0:0:0:ffff:7f39:7b25
127.57.123.38 0:0:0:0:0:ffff:7f39:7b26
127.57.123.39 0:0:0:0:0:ffff:7f39:7b27
127.57.123.40 0:0:0:0:0:ffff:7f39:7b28
127.57.123.41 0:0:0:0:0:ffff:7f39:7b29
127.57.123.42 0:0:0:0:0:ffff:7f39:7b2a
127.57.123.43 0:0:0:0:0:ffff:7f39:7b2b
127.57.123.44 0:0:0:0:0:ffff:7f39:7b2c
127.57.123.45 0:0:0:0:0:ffff:7f39:7b2d
127.57.123.46 0:0:0:0:0:ffff:7f39:7b2e
127.57.123.47 0:0:0:0:0:ffff:7f39:7b2f
127.57.123.48 0:0:0:0:0:ffff:7f39:7b30
127.57.123.49 0:0:0:0:0:ffff:7f39:7b31
127.57.123.50 0:0:0:0:0:ffff:7f39:7b32
127.57.123.51 0:0:0:0:0:ffff:7f39:7b33
127.57.123.52 0:0:0:0:0:ffff:7f39:7b34
127.57.123.53 0:0:0:0:0:ffff:7f39:7b35
127.57.123.54 0:0:0:0:0:ffff:7f39:7b36
127.57.123.55 0:0:0:0:0:ffff:7f39:7b37
127.57.123.56 0:0:0:0:0:ffff:7f39:7b38
127.57.123.57 0:0:0:0:0:ffff:7f39:7b39
127.57.123.58 0:0:0:0:0:ffff:7f39:7b3a
127.57.123.59 0:0:0:0:0:ffff:7f39:7b3b
127.57.123.60 0:0:0:0:0:ffff:7f39:7b3c


127.57.123.61 0:0:0:0:0:ffff:7f39:7b3d
127.57.123.62 0:0:0:0:0:ffff:7f39:7b3e
127.57.123.63 0:0:0:0:0:ffff:7f39:7b3f
127.57.123.64 0:0:0:0:0:ffff:7f39:7b40
127.57.123.65 0:0:0:0:0:ffff:7f39:7b41
127.57.123.66 0:0:0:0:0:ffff:7f39:7b42
127.57.123.67 0:0:0:0:0:ffff:7f39:7b43
127.57.123.68 0:0:0:0:0:ffff:7f39:7b44
127.57.123.69 0:0:0:0:0:ffff:7f39:7b45
127.57.123.70 0:0:0:0:0:ffff:7f39:7b46
127.57.123.71 0:0:0:0:0:ffff:7f39:7b47
127.57.123.72 0:0:0:0:0:ffff:7f39:7b48
127.57.123.73 0:0:0:0:0:ffff:7f39:7b49
127.57.123.74 0:0:0:0:0:ffff:7f39:7b4a
127.57.123.75 0:0:0:0:0:ffff:7f39:7b4b
127.57.123.76 0:0:0:0:0:ffff:7f39:7b4c
127.57.123.77 0:0:0:0:0:ffff:7f39:7b4d
127.57.123.78 0:0:0:0:0:ffff:7f39:7b4e
127.57.123.79 0:0:0:0:0:ffff:7f39:7b4f
127.57.123.80 0:0:0:0:0:ffff:7f39:7b50
127.57.123.81 0:0:0:0:0:ffff:7f39:7b51
127.57.123.82 0:0:0:0:0:ffff:7f39:7b52
127.57.123.83 0:0:0:0:0:ffff:7f39:7b53
127.57.123.84 0:0:0:0:0:ffff:7f39:7b54
127.57.123.85 0:0:0:0:0:ffff:7f39:7b55
127.57.123.86 0:0:0:0:0:ffff:7f39:7b56
127.57.123.87 0:0:0:0:0:ffff:7f39:7b57
127.57.123.88 0:0:0:0:0:ffff:7f39:7b58
127.57.123.89 0:0:0:0:0:ffff:7f39:7b59
127.57.123.90 0:0:0:0:0:ffff:7f39:7b5a
127.57.123.91 0:0:0:0:0:ffff:7f39:7b5b
127.57.123.92 0:0:0:0:0:ffff:7f39:7b5c
127.57.123.93 0:0:0:0:0:ffff:7f39:7b5d
127.57.123.94 0:0:0:0:0:ffff:7f39:7b5e
127.57.123.95 0:0:0:0:0:ffff:7f39:7b5f
127.57.123.96 0:0:0:0:0:ffff:7f39:7b60
127.57.123.97 0:0:0:0:0:ffff:7f39:7b61
127.57.123.98 0:0:0:0:0:ffff:7f39:7b62
127.57.123.99 0:0:0:0:0:ffff:7f39:7b63
127.57.123.100 0:0:0:0:0:ffff:7f39:7b64
127.57.123.101 0:0:0:0:0:ffff:7f39:7b65
127.57.123.102 0:0:0:0:0:ffff:7f39:7b66
127.57.123.103 0:0:0:0:0:ffff:7f39:7b67
127.57.123.104 0:0:0:0:0:ffff:7f39:7b68
127.57.123.105 0:0:0:0:0:ffff:7f39:7b69
127.57.123.106 0:0:0:0:0:ffff:7f39:7b6a
127.57.123.107 0:0:0:0:0:ffff:7f39:7b6b
127.57.123.108 0:0:0:0:0:ffff:7f39:7b6c
127.57.123.109 0:0:0:0:0:ffff:7f39:7b6d
127.57.123.110 0:0:0:0:0:ffff:7f39:7b6e
127.57.123.111 0:0:0:0:0:ffff:7f39:7b6f
127.57.123.112 0:0:0:0:0:ffff:7f39:7b70
127.57.123.113 0:0:0:0:0:ffff:7f39:7b71
127.57.123.114 0:0:0:0:0:ffff:7f39:7b72
127.57.123.115 0:0:0:0:0:ffff:7f39:7b73
127.57.123.116 0:0:0:0:0:ffff:7f39:7b74
127.57.123.117 0:0:0:0:0:ffff:7f39:7b75
127.57.123.118 0:0:0:0:0:ffff:7f39:7b76
127.57.123.119 0:0:0:0:0:ffff:7f39:7b77
127.57.123.120 0:0:0:0:0:ffff:7f39:7b78


127.57.123.121 0:0:0:0:0:ffff:7f39:7b79
127.57.123.122 0:0:0:0:0:ffff:7f39:7b7a
127.57.123.123 0:0:0:0:0:ffff:7f39:7b7b
127.57.123.124 0:0:0:0:0:ffff:7f39:7b7c
127.57.123.125 0:0:0:0:0:ffff:7f39:7b7d
127.57.123.126 0:0:0:0:0:ffff:7f39:7b7e
127.57.123.127 0:0:0:0:0:ffff:7f39:7b7f
127.57.123.128 0:0:0:0:0:ffff:7f39:7b80
127.57.123.129 0:0:0:0:0:ffff:7f39:7b81
127.57.123.130 0:0:0:0:0:ffff:7f39:7b82
127.57.123.131 0:0:0:0:0:ffff:7f39:7b83
127.57.123.132 0:0:0:0:0:ffff:7f39:7b84
127.57.123.133 0:0:0:0:0:ffff:7f39:7b85
127.57.123.134 0:0:0:0:0:ffff:7f39:7b86
127.57.123.135 0:0:0:0:0:ffff:7f39:7b87
127.57.123.136 0:0:0:0:0:ffff:7f39:7b88
127.57.123.137 0:0:0:0:0:ffff:7f39:7b89
127.57.123.138 0:0:0:0:0:ffff:7f39:7b8a
127.57.123.139 0:0:0:0:0:ffff:7f39:7b8b
127.57.123.140 0:0:0:0:0:ffff:7f39:7b8c
127.57.123.141 0:0:0:0:0:ffff:7f39:7b8d
127.57.123.142 0:0:0:0:0:ffff:7f39:7b8e
127.57.123.143 0:0:0:0:0:ffff:7f39:7b8f
127.57.123.144 0:0:0:0:0:ffff:7f39:7b90
127.57.123.145 0:0:0:0:0:ffff:7f39:7b91
127.57.123.146 0:0:0:0:0:ffff:7f39:7b92
127.57.123.147 0:0:0:0:0:ffff:7f39:7b93
127.57.123.148 0:0:0:0:0:ffff:7f39:7b94
127.57.123.149 0:0:0:0:0:ffff:7f39:7b95
127.57.123.150 0:0:0:0:0:ffff:7f39:7b96
127.57.123.151 0:0:0:0:0:ffff:7f39:7b97
127.57.123.152 0:0:0:0:0:ffff:7f39:7b98
127.57.123.153 0:0:0:0:0:ffff:7f39:7b99
127.57.123.154 0:0:0:0:0:ffff:7f39:7b9a
127.57.123.155 0:0:0:0:0:ffff:7f39:7b9b
127.57.123.156 0:0:0:0:0:ffff:7f39:7b9c
127.57.123.157 0:0:0:0:0:ffff:7f39:7b9d
127.57.123.158 0:0:0:0:0:ffff:7f39:7b9e
127.57.123.159 0:0:0:0:0:ffff:7f39:7b9f
127.57.123.160 0:0:0:0:0:ffff:7f39:7ba0
127.57.123.161 0:0:0:0:0:ffff:7f39:7ba1
127.57.123.162 0:0:0:0:0:ffff:7f39:7ba2
127.57.123.163 0:0:0:0:0:ffff:7f39:7ba3
127.57.123.164 0:0:0:0:0:ffff:7f39:7ba4
127.57.123.165 0:0:0:0:0:ffff:7f39:7ba5
127.57.123.166 0:0:0:0:0:ffff:7f39:7ba6
127.57.123.167 0:0:0:0:0:ffff:7f39:7ba7
127.57.123.168 0:0:0:0:0:ffff:7f39:7ba8
127.57.123.169 0:0:0:0:0:ffff:7f39:7ba9
127.57.123.170 0:0:0:0:0:ffff:7f39:7baa
127.57.123.171 0:0:0:0:0:ffff:7f39:7bab
127.57.123.172 0:0:0:0:0:ffff:7f39:7bac
127.57.123.173 0:0:0:0:0:ffff:7f39:7bad
127.57.123.174 0:0:0:0:0:ffff:7f39:7bae
127.57.123.175 0:0:0:0:0:ffff:7f39:7baf
127.57.123.176 0:0:0:0:0:ffff:7f39:7bb0
127.57.123.177 0:0:0:0:0:ffff:7f39:7bb1
127.57.123.178 0:0:0:0:0:ffff:7f39:7bb2
127.57.123.179 0:0:0:0:0:ffff:7f39:7bb3
127.57.123.180 0:0:0:0:0:ffff:7f39:7bb4


127.57.123.181 0:0:0:0:0:ffff:7f39:7bb5
127.57.123.182 0:0:0:0:0:ffff:7f39:7bb6
127.57.123.183 0:0:0:0:0:ffff:7f39:7bb7
127.57.123.184 0:0:0:0:0:ffff:7f39:7bb8
127.57.123.185 0:0:0:0:0:ffff:7f39:7bb9
127.57.123.186 0:0:0:0:0:ffff:7f39:7bba
127.57.123.187 0:0:0:0:0:ffff:7f39:7bbb
127.57.123.188 0:0:0:0:0:ffff:7f39:7bbc
127.57.123.189 0:0:0:0:0:ffff:7f39:7bbd
127.57.123.190 0:0:0:0:0:ffff:7f39:7bbe
127.57.123.191 0:0:0:0:0:ffff:7f39:7bbf
127.57.123.192 0:0:0:0:0:ffff:7f39:7bc0
127.57.123.193 0:0:0:0:0:ffff:7f39:7bc1
127.57.123.194 0:0:0:0:0:ffff:7f39:7bc2
127.57.123.195 0:0:0:0:0:ffff:7f39:7bc3
127.57.123.196 0:0:0:0:0:ffff:7f39:7bc4
127.57.123.197 0:0:0:0:0:ffff:7f39:7bc5
127.57.123.198 0:0:0:0:0:ffff:7f39:7bc6
127.57.123.199 0:0:0:0:0:ffff:7f39:7bc7
127.57.123.200 0:0:0:0:0:ffff:7f39:7bc8
127.57.123.201 0:0:0:0:0:ffff:7f39:7bc9
127.57.123.202 0:0:0:0:0:ffff:7f39:7bca
127.57.123.203 0:0:0:0:0:ffff:7f39:7bcb
127.57.123.204 0:0:0:0:0:ffff:7f39:7bcc
127.57.123.205 0:0:0:0:0:ffff:7f39:7bcd
127.57.123.206 0:0:0:0:0:ffff:7f39:7bce
127.57.123.207 0:0:0:0:0:ffff:7f39:7bcf
127.57.123.208 0:0:0:0:0:ffff:7f39:7bd0
127.57.123.209 0:0:0:0:0:ffff:7f39:7bd1
127.57.123.210 0:0:0:0:0:ffff:7f39:7bd2
127.57.123.211 0:0:0:0:0:ffff:7f39:7bd3
127.57.123.212 0:0:0:0:0:ffff:7f39:7bd4
127.57.123.213 0:0:0:0:0:ffff:7f39:7bd5
127.57.123.214 0:0:0:0:0:ffff:7f39:7bd6
127.57.123.215 0:0:0:0:0:ffff:7f39:7bd7
127.57.123.216 0:0:0:0:0:ffff:7f39:7bd8
127.57.123.217 0:0:0:0:0:ffff:7f39:7bd9
127.57.123.218 0:0:0:0:0:ffff:7f39:7bda
127.57.123.219 0:0:0:0:0:ffff:7f39:7bdb
127.57.123.220 0:0:0:0:0:ffff:7f39:7bdc
127.57.123.221 0:0:0:0:0:ffff:7f39:7bdd
127.57.123.222 0:0:0:0:0:ffff:7f39:7bde
127.57.123.223 0:0:0:0:0:ffff:7f39:7bdf
127.57.123.224 0:0:0:0:0:ffff:7f39:7be0
127.57.123.225 0:0:0:0:0:ffff:7f39:7be1
127.57.123.226 0:0:0:0:0:ffff:7f39:7be2
127.57.123.227 0:0:0:0:0:ffff:7f39:7be3
127.57.123.228 0:0:0:0:0:ffff:7f39:7be4
127.57.123.229 0:0:0:0:0:ffff:7f39:7be5
127.57.123.230 0:0:0:0:0:ffff:7f39:7be6
127.57.123.231 0:0:0:0:0:ffff:7f39:7be7
127.57.123.232 0:0:0:0:0:ffff:7f39:7be8
127.57.123.233 0:0:0:0:0:ffff:7f39:7be9
127.57.123.234 0:0:0:0:0:ffff:7f39:7bea
127.57.123.235 0:0:0:0:0:ffff:7f39:7beb
127.57.123.236 0:0:0:0:0:ffff:7f39:7bec
127.57.123.237 0:0:0:0:0:ffff:7f39:7bed
127.57.123.238 0:0:0:0:0:ffff:7f39:7bee
127.57.123.239 0:0:0:0:0:ffff:7f39:7bef
127.57.123.240 0:0:0:0:0:ffff:7f39:7bf0
127.57.123.241 0:0:0:0:0:ffff:7f39:7bf1
127.57.123.242 0:0:0:0:0:ffff:7f39:7bf2
127.57.123.243 0:0:0:0:0:ffff:7f39:7bf3
127.57.123.244 0:0:0:0:0:ffff:7f39:7bf4
127.57.123.245 0:0:0:0:0:ffff:7f39:7bf5
127.57.123.246 0:0:0:0:0:ffff:7f39:7bf6
127.57.123.247 0:0:0:0:0:ffff:7f39:7bf7
127.57.123.248 0:0:0:0:0:ffff:7f39:7bf8
127.57.123.249 0:0:0:0:0:ffff:7f39:7bf9
127.57.123.250 0:0:0:0:0:ffff:7f39:7bfa
127.57.123.251 0:0:0:0:0:ffff:7f39:7bfb
127.57.123.252 0:0:0:0:0:ffff:7f39:7bfc
127.57.123.253 0:0:0:0:0:ffff:7f39:7bfd
127.57.123.254 0:0:0:0:0:ffff:7f39:7bfe
127.57.123.255 0:0:0:0:0:ffff:7f39:7bff


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.