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
12.243.27.1 0:0:0:0:0:ffff:cf3:1b01
12.243.27.2 0:0:0:0:0:ffff:cf3:1b02
12.243.27.3 0:0:0:0:0:ffff:cf3:1b03
12.243.27.4 0:0:0:0:0:ffff:cf3:1b04
12.243.27.5 0:0:0:0:0:ffff:cf3:1b05
12.243.27.6 0:0:0:0:0:ffff:cf3:1b06
12.243.27.7 0:0:0:0:0:ffff:cf3:1b07
12.243.27.8 0:0:0:0:0:ffff:cf3:1b08
12.243.27.9 0:0:0:0:0:ffff:cf3:1b09
12.243.27.10 0:0:0:0:0:ffff:cf3:1b0a
12.243.27.11 0:0:0:0:0:ffff:cf3:1b0b
12.243.27.12 0:0:0:0:0:ffff:cf3:1b0c
12.243.27.13 0:0:0:0:0:ffff:cf3:1b0d
12.243.27.14 0:0:0:0:0:ffff:cf3:1b0e
12.243.27.15 0:0:0:0:0:ffff:cf3:1b0f
12.243.27.16 0:0:0:0:0:ffff:cf3:1b10
12.243.27.17 0:0:0:0:0:ffff:cf3:1b11
12.243.27.18 0:0:0:0:0:ffff:cf3:1b12
12.243.27.19 0:0:0:0:0:ffff:cf3:1b13
12.243.27.20 0:0:0:0:0:ffff:cf3:1b14
12.243.27.21 0:0:0:0:0:ffff:cf3:1b15
12.243.27.22 0:0:0:0:0:ffff:cf3:1b16
12.243.27.23 0:0:0:0:0:ffff:cf3:1b17
12.243.27.24 0:0:0:0:0:ffff:cf3:1b18
12.243.27.25 0:0:0:0:0:ffff:cf3:1b19
12.243.27.26 0:0:0:0:0:ffff:cf3:1b1a
12.243.27.27 0:0:0:0:0:ffff:cf3:1b1b
12.243.27.28 0:0:0:0:0:ffff:cf3:1b1c
12.243.27.29 0:0:0:0:0:ffff:cf3:1b1d
12.243.27.30 0:0:0:0:0:ffff:cf3:1b1e
12.243.27.31 0:0:0:0:0:ffff:cf3:1b1f
12.243.27.32 0:0:0:0:0:ffff:cf3:1b20
12.243.27.33 0:0:0:0:0:ffff:cf3:1b21
12.243.27.34 0:0:0:0:0:ffff:cf3:1b22
12.243.27.35 0:0:0:0:0:ffff:cf3:1b23
12.243.27.36 0:0:0:0:0:ffff:cf3:1b24
12.243.27.37 0:0:0:0:0:ffff:cf3:1b25
12.243.27.38 0:0:0:0:0:ffff:cf3:1b26
12.243.27.39 0:0:0:0:0:ffff:cf3:1b27
12.243.27.40 0:0:0:0:0:ffff:cf3:1b28
12.243.27.41 0:0:0:0:0:ffff:cf3:1b29
12.243.27.42 0:0:0:0:0:ffff:cf3:1b2a
12.243.27.43 0:0:0:0:0:ffff:cf3:1b2b
12.243.27.44 0:0:0:0:0:ffff:cf3:1b2c
12.243.27.45 0:0:0:0:0:ffff:cf3:1b2d
12.243.27.46 0:0:0:0:0:ffff:cf3:1b2e
12.243.27.47 0:0:0:0:0:ffff:cf3:1b2f
12.243.27.48 0:0:0:0:0:ffff:cf3:1b30
12.243.27.49 0:0:0:0:0:ffff:cf3:1b31
12.243.27.50 0:0:0:0:0:ffff:cf3:1b32
12.243.27.51 0:0:0:0:0:ffff:cf3:1b33
12.243.27.52 0:0:0:0:0:ffff:cf3:1b34
12.243.27.53 0:0:0:0:0:ffff:cf3:1b35
12.243.27.54 0:0:0:0:0:ffff:cf3:1b36
12.243.27.55 0:0:0:0:0:ffff:cf3:1b37
12.243.27.56 0:0:0:0:0:ffff:cf3:1b38
12.243.27.57 0:0:0:0:0:ffff:cf3:1b39
12.243.27.58 0:0:0:0:0:ffff:cf3:1b3a
12.243.27.59 0:0:0:0:0:ffff:cf3:1b3b
12.243.27.60 0:0:0:0:0:ffff:cf3:1b3c


12.243.27.61 0:0:0:0:0:ffff:cf3:1b3d
12.243.27.62 0:0:0:0:0:ffff:cf3:1b3e
12.243.27.63 0:0:0:0:0:ffff:cf3:1b3f
12.243.27.64 0:0:0:0:0:ffff:cf3:1b40
12.243.27.65 0:0:0:0:0:ffff:cf3:1b41
12.243.27.66 0:0:0:0:0:ffff:cf3:1b42
12.243.27.67 0:0:0:0:0:ffff:cf3:1b43
12.243.27.68 0:0:0:0:0:ffff:cf3:1b44
12.243.27.69 0:0:0:0:0:ffff:cf3:1b45
12.243.27.70 0:0:0:0:0:ffff:cf3:1b46
12.243.27.71 0:0:0:0:0:ffff:cf3:1b47
12.243.27.72 0:0:0:0:0:ffff:cf3:1b48
12.243.27.73 0:0:0:0:0:ffff:cf3:1b49
12.243.27.74 0:0:0:0:0:ffff:cf3:1b4a
12.243.27.75 0:0:0:0:0:ffff:cf3:1b4b
12.243.27.76 0:0:0:0:0:ffff:cf3:1b4c
12.243.27.77 0:0:0:0:0:ffff:cf3:1b4d
12.243.27.78 0:0:0:0:0:ffff:cf3:1b4e
12.243.27.79 0:0:0:0:0:ffff:cf3:1b4f
12.243.27.80 0:0:0:0:0:ffff:cf3:1b50
12.243.27.81 0:0:0:0:0:ffff:cf3:1b51
12.243.27.82 0:0:0:0:0:ffff:cf3:1b52
12.243.27.83 0:0:0:0:0:ffff:cf3:1b53
12.243.27.84 0:0:0:0:0:ffff:cf3:1b54
12.243.27.85 0:0:0:0:0:ffff:cf3:1b55
12.243.27.86 0:0:0:0:0:ffff:cf3:1b56
12.243.27.87 0:0:0:0:0:ffff:cf3:1b57
12.243.27.88 0:0:0:0:0:ffff:cf3:1b58
12.243.27.89 0:0:0:0:0:ffff:cf3:1b59
12.243.27.90 0:0:0:0:0:ffff:cf3:1b5a
12.243.27.91 0:0:0:0:0:ffff:cf3:1b5b
12.243.27.92 0:0:0:0:0:ffff:cf3:1b5c
12.243.27.93 0:0:0:0:0:ffff:cf3:1b5d
12.243.27.94 0:0:0:0:0:ffff:cf3:1b5e
12.243.27.95 0:0:0:0:0:ffff:cf3:1b5f
12.243.27.96 0:0:0:0:0:ffff:cf3:1b60
12.243.27.97 0:0:0:0:0:ffff:cf3:1b61
12.243.27.98 0:0:0:0:0:ffff:cf3:1b62
12.243.27.99 0:0:0:0:0:ffff:cf3:1b63
12.243.27.100 0:0:0:0:0:ffff:cf3:1b64
12.243.27.101 0:0:0:0:0:ffff:cf3:1b65
12.243.27.102 0:0:0:0:0:ffff:cf3:1b66
12.243.27.103 0:0:0:0:0:ffff:cf3:1b67
12.243.27.104 0:0:0:0:0:ffff:cf3:1b68
12.243.27.105 0:0:0:0:0:ffff:cf3:1b69
12.243.27.106 0:0:0:0:0:ffff:cf3:1b6a
12.243.27.107 0:0:0:0:0:ffff:cf3:1b6b
12.243.27.108 0:0:0:0:0:ffff:cf3:1b6c
12.243.27.109 0:0:0:0:0:ffff:cf3:1b6d
12.243.27.110 0:0:0:0:0:ffff:cf3:1b6e
12.243.27.111 0:0:0:0:0:ffff:cf3:1b6f
12.243.27.112 0:0:0:0:0:ffff:cf3:1b70
12.243.27.113 0:0:0:0:0:ffff:cf3:1b71
12.243.27.114 0:0:0:0:0:ffff:cf3:1b72
12.243.27.115 0:0:0:0:0:ffff:cf3:1b73
12.243.27.116 0:0:0:0:0:ffff:cf3:1b74
12.243.27.117 0:0:0:0:0:ffff:cf3:1b75
12.243.27.118 0:0:0:0:0:ffff:cf3:1b76
12.243.27.119 0:0:0:0:0:ffff:cf3:1b77
12.243.27.120 0:0:0:0:0:ffff:cf3:1b78


12.243.27.121 0:0:0:0:0:ffff:cf3:1b79
12.243.27.122 0:0:0:0:0:ffff:cf3:1b7a
12.243.27.123 0:0:0:0:0:ffff:cf3:1b7b
12.243.27.124 0:0:0:0:0:ffff:cf3:1b7c
12.243.27.125 0:0:0:0:0:ffff:cf3:1b7d
12.243.27.126 0:0:0:0:0:ffff:cf3:1b7e
12.243.27.127 0:0:0:0:0:ffff:cf3:1b7f
12.243.27.128 0:0:0:0:0:ffff:cf3:1b80
12.243.27.129 0:0:0:0:0:ffff:cf3:1b81
12.243.27.130 0:0:0:0:0:ffff:cf3:1b82
12.243.27.131 0:0:0:0:0:ffff:cf3:1b83
12.243.27.132 0:0:0:0:0:ffff:cf3:1b84
12.243.27.133 0:0:0:0:0:ffff:cf3:1b85
12.243.27.134 0:0:0:0:0:ffff:cf3:1b86
12.243.27.135 0:0:0:0:0:ffff:cf3:1b87
12.243.27.136 0:0:0:0:0:ffff:cf3:1b88
12.243.27.137 0:0:0:0:0:ffff:cf3:1b89
12.243.27.138 0:0:0:0:0:ffff:cf3:1b8a
12.243.27.139 0:0:0:0:0:ffff:cf3:1b8b
12.243.27.140 0:0:0:0:0:ffff:cf3:1b8c
12.243.27.141 0:0:0:0:0:ffff:cf3:1b8d
12.243.27.142 0:0:0:0:0:ffff:cf3:1b8e
12.243.27.143 0:0:0:0:0:ffff:cf3:1b8f
12.243.27.144 0:0:0:0:0:ffff:cf3:1b90
12.243.27.145 0:0:0:0:0:ffff:cf3:1b91
12.243.27.146 0:0:0:0:0:ffff:cf3:1b92
12.243.27.147 0:0:0:0:0:ffff:cf3:1b93
12.243.27.148 0:0:0:0:0:ffff:cf3:1b94
12.243.27.149 0:0:0:0:0:ffff:cf3:1b95
12.243.27.150 0:0:0:0:0:ffff:cf3:1b96
12.243.27.151 0:0:0:0:0:ffff:cf3:1b97
12.243.27.152 0:0:0:0:0:ffff:cf3:1b98
12.243.27.153 0:0:0:0:0:ffff:cf3:1b99
12.243.27.154 0:0:0:0:0:ffff:cf3:1b9a
12.243.27.155 0:0:0:0:0:ffff:cf3:1b9b
12.243.27.156 0:0:0:0:0:ffff:cf3:1b9c
12.243.27.157 0:0:0:0:0:ffff:cf3:1b9d
12.243.27.158 0:0:0:0:0:ffff:cf3:1b9e
12.243.27.159 0:0:0:0:0:ffff:cf3:1b9f
12.243.27.160 0:0:0:0:0:ffff:cf3:1ba0
12.243.27.161 0:0:0:0:0:ffff:cf3:1ba1
12.243.27.162 0:0:0:0:0:ffff:cf3:1ba2
12.243.27.163 0:0:0:0:0:ffff:cf3:1ba3
12.243.27.164 0:0:0:0:0:ffff:cf3:1ba4
12.243.27.165 0:0:0:0:0:ffff:cf3:1ba5
12.243.27.166 0:0:0:0:0:ffff:cf3:1ba6
12.243.27.167 0:0:0:0:0:ffff:cf3:1ba7
12.243.27.168 0:0:0:0:0:ffff:cf3:1ba8
12.243.27.169 0:0:0:0:0:ffff:cf3:1ba9
12.243.27.170 0:0:0:0:0:ffff:cf3:1baa
12.243.27.171 0:0:0:0:0:ffff:cf3:1bab
12.243.27.172 0:0:0:0:0:ffff:cf3:1bac
12.243.27.173 0:0:0:0:0:ffff:cf3:1bad
12.243.27.174 0:0:0:0:0:ffff:cf3:1bae
12.243.27.175 0:0:0:0:0:ffff:cf3:1baf
12.243.27.176 0:0:0:0:0:ffff:cf3:1bb0
12.243.27.177 0:0:0:0:0:ffff:cf3:1bb1
12.243.27.178 0:0:0:0:0:ffff:cf3:1bb2
12.243.27.179 0:0:0:0:0:ffff:cf3:1bb3
12.243.27.180 0:0:0:0:0:ffff:cf3:1bb4


12.243.27.181 0:0:0:0:0:ffff:cf3:1bb5
12.243.27.182 0:0:0:0:0:ffff:cf3:1bb6
12.243.27.183 0:0:0:0:0:ffff:cf3:1bb7
12.243.27.184 0:0:0:0:0:ffff:cf3:1bb8
12.243.27.185 0:0:0:0:0:ffff:cf3:1bb9
12.243.27.186 0:0:0:0:0:ffff:cf3:1bba
12.243.27.187 0:0:0:0:0:ffff:cf3:1bbb
12.243.27.188 0:0:0:0:0:ffff:cf3:1bbc
12.243.27.189 0:0:0:0:0:ffff:cf3:1bbd
12.243.27.190 0:0:0:0:0:ffff:cf3:1bbe
12.243.27.191 0:0:0:0:0:ffff:cf3:1bbf
12.243.27.192 0:0:0:0:0:ffff:cf3:1bc0
12.243.27.193 0:0:0:0:0:ffff:cf3:1bc1
12.243.27.194 0:0:0:0:0:ffff:cf3:1bc2
12.243.27.195 0:0:0:0:0:ffff:cf3:1bc3
12.243.27.196 0:0:0:0:0:ffff:cf3:1bc4
12.243.27.197 0:0:0:0:0:ffff:cf3:1bc5
12.243.27.198 0:0:0:0:0:ffff:cf3:1bc6
12.243.27.199 0:0:0:0:0:ffff:cf3:1bc7
12.243.27.200 0:0:0:0:0:ffff:cf3:1bc8
12.243.27.201 0:0:0:0:0:ffff:cf3:1bc9
12.243.27.202 0:0:0:0:0:ffff:cf3:1bca
12.243.27.203 0:0:0:0:0:ffff:cf3:1bcb
12.243.27.204 0:0:0:0:0:ffff:cf3:1bcc
12.243.27.205 0:0:0:0:0:ffff:cf3:1bcd
12.243.27.206 0:0:0:0:0:ffff:cf3:1bce
12.243.27.207 0:0:0:0:0:ffff:cf3:1bcf
12.243.27.208 0:0:0:0:0:ffff:cf3:1bd0
12.243.27.209 0:0:0:0:0:ffff:cf3:1bd1
12.243.27.210 0:0:0:0:0:ffff:cf3:1bd2
12.243.27.211 0:0:0:0:0:ffff:cf3:1bd3
12.243.27.212 0:0:0:0:0:ffff:cf3:1bd4
12.243.27.213 0:0:0:0:0:ffff:cf3:1bd5
12.243.27.214 0:0:0:0:0:ffff:cf3:1bd6
12.243.27.215 0:0:0:0:0:ffff:cf3:1bd7
12.243.27.216 0:0:0:0:0:ffff:cf3:1bd8
12.243.27.217 0:0:0:0:0:ffff:cf3:1bd9
12.243.27.218 0:0:0:0:0:ffff:cf3:1bda
12.243.27.219 0:0:0:0:0:ffff:cf3:1bdb
12.243.27.220 0:0:0:0:0:ffff:cf3:1bdc
12.243.27.221 0:0:0:0:0:ffff:cf3:1bdd
12.243.27.222 0:0:0:0:0:ffff:cf3:1bde
12.243.27.223 0:0:0:0:0:ffff:cf3:1bdf
12.243.27.224 0:0:0:0:0:ffff:cf3:1be0
12.243.27.225 0:0:0:0:0:ffff:cf3:1be1
12.243.27.226 0:0:0:0:0:ffff:cf3:1be2
12.243.27.227 0:0:0:0:0:ffff:cf3:1be3
12.243.27.228 0:0:0:0:0:ffff:cf3:1be4
12.243.27.229 0:0:0:0:0:ffff:cf3:1be5
12.243.27.230 0:0:0:0:0:ffff:cf3:1be6
12.243.27.231 0:0:0:0:0:ffff:cf3:1be7
12.243.27.232 0:0:0:0:0:ffff:cf3:1be8
12.243.27.233 0:0:0:0:0:ffff:cf3:1be9
12.243.27.234 0:0:0:0:0:ffff:cf3:1bea
12.243.27.235 0:0:0:0:0:ffff:cf3:1beb
12.243.27.236 0:0:0:0:0:ffff:cf3:1bec
12.243.27.237 0:0:0:0:0:ffff:cf3:1bed
12.243.27.238 0:0:0:0:0:ffff:cf3:1bee
12.243.27.239 0:0:0:0:0:ffff:cf3:1bef
12.243.27.240 0:0:0:0:0:ffff:cf3:1bf0
12.243.27.241 0:0:0:0:0:ffff:cf3:1bf1
12.243.27.242 0:0:0:0:0:ffff:cf3:1bf2
12.243.27.243 0:0:0:0:0:ffff:cf3:1bf3
12.243.27.244 0:0:0:0:0:ffff:cf3:1bf4
12.243.27.245 0:0:0:0:0:ffff:cf3:1bf5
12.243.27.246 0:0:0:0:0:ffff:cf3:1bf6
12.243.27.247 0:0:0:0:0:ffff:cf3:1bf7
12.243.27.248 0:0:0:0:0:ffff:cf3:1bf8
12.243.27.249 0:0:0:0:0:ffff:cf3:1bf9
12.243.27.250 0:0:0:0:0:ffff:cf3:1bfa
12.243.27.251 0:0:0:0:0:ffff:cf3:1bfb
12.243.27.252 0:0:0:0:0:ffff:cf3:1bfc
12.243.27.253 0:0:0:0:0:ffff:cf3:1bfd
12.243.27.254 0:0:0:0:0:ffff:cf3:1bfe
12.243.27.255 0:0:0:0:0:ffff:cf3:1bff


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.