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
255.66.27.1 0:0:0:0:0:ffff:ff42:1b01
255.66.27.2 0:0:0:0:0:ffff:ff42:1b02
255.66.27.3 0:0:0:0:0:ffff:ff42:1b03
255.66.27.4 0:0:0:0:0:ffff:ff42:1b04
255.66.27.5 0:0:0:0:0:ffff:ff42:1b05
255.66.27.6 0:0:0:0:0:ffff:ff42:1b06
255.66.27.7 0:0:0:0:0:ffff:ff42:1b07
255.66.27.8 0:0:0:0:0:ffff:ff42:1b08
255.66.27.9 0:0:0:0:0:ffff:ff42:1b09
255.66.27.10 0:0:0:0:0:ffff:ff42:1b0a
255.66.27.11 0:0:0:0:0:ffff:ff42:1b0b
255.66.27.12 0:0:0:0:0:ffff:ff42:1b0c
255.66.27.13 0:0:0:0:0:ffff:ff42:1b0d
255.66.27.14 0:0:0:0:0:ffff:ff42:1b0e
255.66.27.15 0:0:0:0:0:ffff:ff42:1b0f
255.66.27.16 0:0:0:0:0:ffff:ff42:1b10
255.66.27.17 0:0:0:0:0:ffff:ff42:1b11
255.66.27.18 0:0:0:0:0:ffff:ff42:1b12
255.66.27.19 0:0:0:0:0:ffff:ff42:1b13
255.66.27.20 0:0:0:0:0:ffff:ff42:1b14
255.66.27.21 0:0:0:0:0:ffff:ff42:1b15
255.66.27.22 0:0:0:0:0:ffff:ff42:1b16
255.66.27.23 0:0:0:0:0:ffff:ff42:1b17
255.66.27.24 0:0:0:0:0:ffff:ff42:1b18
255.66.27.25 0:0:0:0:0:ffff:ff42:1b19
255.66.27.26 0:0:0:0:0:ffff:ff42:1b1a
255.66.27.27 0:0:0:0:0:ffff:ff42:1b1b
255.66.27.28 0:0:0:0:0:ffff:ff42:1b1c
255.66.27.29 0:0:0:0:0:ffff:ff42:1b1d
255.66.27.30 0:0:0:0:0:ffff:ff42:1b1e
255.66.27.31 0:0:0:0:0:ffff:ff42:1b1f
255.66.27.32 0:0:0:0:0:ffff:ff42:1b20
255.66.27.33 0:0:0:0:0:ffff:ff42:1b21
255.66.27.34 0:0:0:0:0:ffff:ff42:1b22
255.66.27.35 0:0:0:0:0:ffff:ff42:1b23
255.66.27.36 0:0:0:0:0:ffff:ff42:1b24
255.66.27.37 0:0:0:0:0:ffff:ff42:1b25
255.66.27.38 0:0:0:0:0:ffff:ff42:1b26
255.66.27.39 0:0:0:0:0:ffff:ff42:1b27
255.66.27.40 0:0:0:0:0:ffff:ff42:1b28
255.66.27.41 0:0:0:0:0:ffff:ff42:1b29
255.66.27.42 0:0:0:0:0:ffff:ff42:1b2a
255.66.27.43 0:0:0:0:0:ffff:ff42:1b2b
255.66.27.44 0:0:0:0:0:ffff:ff42:1b2c
255.66.27.45 0:0:0:0:0:ffff:ff42:1b2d
255.66.27.46 0:0:0:0:0:ffff:ff42:1b2e
255.66.27.47 0:0:0:0:0:ffff:ff42:1b2f
255.66.27.48 0:0:0:0:0:ffff:ff42:1b30
255.66.27.49 0:0:0:0:0:ffff:ff42:1b31
255.66.27.50 0:0:0:0:0:ffff:ff42:1b32
255.66.27.51 0:0:0:0:0:ffff:ff42:1b33
255.66.27.52 0:0:0:0:0:ffff:ff42:1b34
255.66.27.53 0:0:0:0:0:ffff:ff42:1b35
255.66.27.54 0:0:0:0:0:ffff:ff42:1b36
255.66.27.55 0:0:0:0:0:ffff:ff42:1b37
255.66.27.56 0:0:0:0:0:ffff:ff42:1b38
255.66.27.57 0:0:0:0:0:ffff:ff42:1b39
255.66.27.58 0:0:0:0:0:ffff:ff42:1b3a
255.66.27.59 0:0:0:0:0:ffff:ff42:1b3b
255.66.27.60 0:0:0:0:0:ffff:ff42:1b3c


255.66.27.61 0:0:0:0:0:ffff:ff42:1b3d
255.66.27.62 0:0:0:0:0:ffff:ff42:1b3e
255.66.27.63 0:0:0:0:0:ffff:ff42:1b3f
255.66.27.64 0:0:0:0:0:ffff:ff42:1b40
255.66.27.65 0:0:0:0:0:ffff:ff42:1b41
255.66.27.66 0:0:0:0:0:ffff:ff42:1b42
255.66.27.67 0:0:0:0:0:ffff:ff42:1b43
255.66.27.68 0:0:0:0:0:ffff:ff42:1b44
255.66.27.69 0:0:0:0:0:ffff:ff42:1b45
255.66.27.70 0:0:0:0:0:ffff:ff42:1b46
255.66.27.71 0:0:0:0:0:ffff:ff42:1b47
255.66.27.72 0:0:0:0:0:ffff:ff42:1b48
255.66.27.73 0:0:0:0:0:ffff:ff42:1b49
255.66.27.74 0:0:0:0:0:ffff:ff42:1b4a
255.66.27.75 0:0:0:0:0:ffff:ff42:1b4b
255.66.27.76 0:0:0:0:0:ffff:ff42:1b4c
255.66.27.77 0:0:0:0:0:ffff:ff42:1b4d
255.66.27.78 0:0:0:0:0:ffff:ff42:1b4e
255.66.27.79 0:0:0:0:0:ffff:ff42:1b4f
255.66.27.80 0:0:0:0:0:ffff:ff42:1b50
255.66.27.81 0:0:0:0:0:ffff:ff42:1b51
255.66.27.82 0:0:0:0:0:ffff:ff42:1b52
255.66.27.83 0:0:0:0:0:ffff:ff42:1b53
255.66.27.84 0:0:0:0:0:ffff:ff42:1b54
255.66.27.85 0:0:0:0:0:ffff:ff42:1b55
255.66.27.86 0:0:0:0:0:ffff:ff42:1b56
255.66.27.87 0:0:0:0:0:ffff:ff42:1b57
255.66.27.88 0:0:0:0:0:ffff:ff42:1b58
255.66.27.89 0:0:0:0:0:ffff:ff42:1b59
255.66.27.90 0:0:0:0:0:ffff:ff42:1b5a
255.66.27.91 0:0:0:0:0:ffff:ff42:1b5b
255.66.27.92 0:0:0:0:0:ffff:ff42:1b5c
255.66.27.93 0:0:0:0:0:ffff:ff42:1b5d
255.66.27.94 0:0:0:0:0:ffff:ff42:1b5e
255.66.27.95 0:0:0:0:0:ffff:ff42:1b5f
255.66.27.96 0:0:0:0:0:ffff:ff42:1b60
255.66.27.97 0:0:0:0:0:ffff:ff42:1b61
255.66.27.98 0:0:0:0:0:ffff:ff42:1b62
255.66.27.99 0:0:0:0:0:ffff:ff42:1b63
255.66.27.100 0:0:0:0:0:ffff:ff42:1b64
255.66.27.101 0:0:0:0:0:ffff:ff42:1b65
255.66.27.102 0:0:0:0:0:ffff:ff42:1b66
255.66.27.103 0:0:0:0:0:ffff:ff42:1b67
255.66.27.104 0:0:0:0:0:ffff:ff42:1b68
255.66.27.105 0:0:0:0:0:ffff:ff42:1b69
255.66.27.106 0:0:0:0:0:ffff:ff42:1b6a
255.66.27.107 0:0:0:0:0:ffff:ff42:1b6b
255.66.27.108 0:0:0:0:0:ffff:ff42:1b6c
255.66.27.109 0:0:0:0:0:ffff:ff42:1b6d
255.66.27.110 0:0:0:0:0:ffff:ff42:1b6e
255.66.27.111 0:0:0:0:0:ffff:ff42:1b6f
255.66.27.112 0:0:0:0:0:ffff:ff42:1b70
255.66.27.113 0:0:0:0:0:ffff:ff42:1b71
255.66.27.114 0:0:0:0:0:ffff:ff42:1b72
255.66.27.115 0:0:0:0:0:ffff:ff42:1b73
255.66.27.116 0:0:0:0:0:ffff:ff42:1b74
255.66.27.117 0:0:0:0:0:ffff:ff42:1b75
255.66.27.118 0:0:0:0:0:ffff:ff42:1b76
255.66.27.119 0:0:0:0:0:ffff:ff42:1b77
255.66.27.120 0:0:0:0:0:ffff:ff42:1b78


255.66.27.121 0:0:0:0:0:ffff:ff42:1b79
255.66.27.122 0:0:0:0:0:ffff:ff42:1b7a
255.66.27.123 0:0:0:0:0:ffff:ff42:1b7b
255.66.27.124 0:0:0:0:0:ffff:ff42:1b7c
255.66.27.125 0:0:0:0:0:ffff:ff42:1b7d
255.66.27.126 0:0:0:0:0:ffff:ff42:1b7e
255.66.27.127 0:0:0:0:0:ffff:ff42:1b7f
255.66.27.128 0:0:0:0:0:ffff:ff42:1b80
255.66.27.129 0:0:0:0:0:ffff:ff42:1b81
255.66.27.130 0:0:0:0:0:ffff:ff42:1b82
255.66.27.131 0:0:0:0:0:ffff:ff42:1b83
255.66.27.132 0:0:0:0:0:ffff:ff42:1b84
255.66.27.133 0:0:0:0:0:ffff:ff42:1b85
255.66.27.134 0:0:0:0:0:ffff:ff42:1b86
255.66.27.135 0:0:0:0:0:ffff:ff42:1b87
255.66.27.136 0:0:0:0:0:ffff:ff42:1b88
255.66.27.137 0:0:0:0:0:ffff:ff42:1b89
255.66.27.138 0:0:0:0:0:ffff:ff42:1b8a
255.66.27.139 0:0:0:0:0:ffff:ff42:1b8b
255.66.27.140 0:0:0:0:0:ffff:ff42:1b8c
255.66.27.141 0:0:0:0:0:ffff:ff42:1b8d
255.66.27.142 0:0:0:0:0:ffff:ff42:1b8e
255.66.27.143 0:0:0:0:0:ffff:ff42:1b8f
255.66.27.144 0:0:0:0:0:ffff:ff42:1b90
255.66.27.145 0:0:0:0:0:ffff:ff42:1b91
255.66.27.146 0:0:0:0:0:ffff:ff42:1b92
255.66.27.147 0:0:0:0:0:ffff:ff42:1b93
255.66.27.148 0:0:0:0:0:ffff:ff42:1b94
255.66.27.149 0:0:0:0:0:ffff:ff42:1b95
255.66.27.150 0:0:0:0:0:ffff:ff42:1b96
255.66.27.151 0:0:0:0:0:ffff:ff42:1b97
255.66.27.152 0:0:0:0:0:ffff:ff42:1b98
255.66.27.153 0:0:0:0:0:ffff:ff42:1b99
255.66.27.154 0:0:0:0:0:ffff:ff42:1b9a
255.66.27.155 0:0:0:0:0:ffff:ff42:1b9b
255.66.27.156 0:0:0:0:0:ffff:ff42:1b9c
255.66.27.157 0:0:0:0:0:ffff:ff42:1b9d
255.66.27.158 0:0:0:0:0:ffff:ff42:1b9e
255.66.27.159 0:0:0:0:0:ffff:ff42:1b9f
255.66.27.160 0:0:0:0:0:ffff:ff42:1ba0
255.66.27.161 0:0:0:0:0:ffff:ff42:1ba1
255.66.27.162 0:0:0:0:0:ffff:ff42:1ba2
255.66.27.163 0:0:0:0:0:ffff:ff42:1ba3
255.66.27.164 0:0:0:0:0:ffff:ff42:1ba4
255.66.27.165 0:0:0:0:0:ffff:ff42:1ba5
255.66.27.166 0:0:0:0:0:ffff:ff42:1ba6
255.66.27.167 0:0:0:0:0:ffff:ff42:1ba7
255.66.27.168 0:0:0:0:0:ffff:ff42:1ba8
255.66.27.169 0:0:0:0:0:ffff:ff42:1ba9
255.66.27.170 0:0:0:0:0:ffff:ff42:1baa
255.66.27.171 0:0:0:0:0:ffff:ff42:1bab
255.66.27.172 0:0:0:0:0:ffff:ff42:1bac
255.66.27.173 0:0:0:0:0:ffff:ff42:1bad
255.66.27.174 0:0:0:0:0:ffff:ff42:1bae
255.66.27.175 0:0:0:0:0:ffff:ff42:1baf
255.66.27.176 0:0:0:0:0:ffff:ff42:1bb0
255.66.27.177 0:0:0:0:0:ffff:ff42:1bb1
255.66.27.178 0:0:0:0:0:ffff:ff42:1bb2
255.66.27.179 0:0:0:0:0:ffff:ff42:1bb3
255.66.27.180 0:0:0:0:0:ffff:ff42:1bb4


255.66.27.181 0:0:0:0:0:ffff:ff42:1bb5
255.66.27.182 0:0:0:0:0:ffff:ff42:1bb6
255.66.27.183 0:0:0:0:0:ffff:ff42:1bb7
255.66.27.184 0:0:0:0:0:ffff:ff42:1bb8
255.66.27.185 0:0:0:0:0:ffff:ff42:1bb9
255.66.27.186 0:0:0:0:0:ffff:ff42:1bba
255.66.27.187 0:0:0:0:0:ffff:ff42:1bbb
255.66.27.188 0:0:0:0:0:ffff:ff42:1bbc
255.66.27.189 0:0:0:0:0:ffff:ff42:1bbd
255.66.27.190 0:0:0:0:0:ffff:ff42:1bbe
255.66.27.191 0:0:0:0:0:ffff:ff42:1bbf
255.66.27.192 0:0:0:0:0:ffff:ff42:1bc0
255.66.27.193 0:0:0:0:0:ffff:ff42:1bc1
255.66.27.194 0:0:0:0:0:ffff:ff42:1bc2
255.66.27.195 0:0:0:0:0:ffff:ff42:1bc3
255.66.27.196 0:0:0:0:0:ffff:ff42:1bc4
255.66.27.197 0:0:0:0:0:ffff:ff42:1bc5
255.66.27.198 0:0:0:0:0:ffff:ff42:1bc6
255.66.27.199 0:0:0:0:0:ffff:ff42:1bc7
255.66.27.200 0:0:0:0:0:ffff:ff42:1bc8
255.66.27.201 0:0:0:0:0:ffff:ff42:1bc9
255.66.27.202 0:0:0:0:0:ffff:ff42:1bca
255.66.27.203 0:0:0:0:0:ffff:ff42:1bcb
255.66.27.204 0:0:0:0:0:ffff:ff42:1bcc
255.66.27.205 0:0:0:0:0:ffff:ff42:1bcd
255.66.27.206 0:0:0:0:0:ffff:ff42:1bce
255.66.27.207 0:0:0:0:0:ffff:ff42:1bcf
255.66.27.208 0:0:0:0:0:ffff:ff42:1bd0
255.66.27.209 0:0:0:0:0:ffff:ff42:1bd1
255.66.27.210 0:0:0:0:0:ffff:ff42:1bd2
255.66.27.211 0:0:0:0:0:ffff:ff42:1bd3
255.66.27.212 0:0:0:0:0:ffff:ff42:1bd4
255.66.27.213 0:0:0:0:0:ffff:ff42:1bd5
255.66.27.214 0:0:0:0:0:ffff:ff42:1bd6
255.66.27.215 0:0:0:0:0:ffff:ff42:1bd7
255.66.27.216 0:0:0:0:0:ffff:ff42:1bd8
255.66.27.217 0:0:0:0:0:ffff:ff42:1bd9
255.66.27.218 0:0:0:0:0:ffff:ff42:1bda
255.66.27.219 0:0:0:0:0:ffff:ff42:1bdb
255.66.27.220 0:0:0:0:0:ffff:ff42:1bdc
255.66.27.221 0:0:0:0:0:ffff:ff42:1bdd
255.66.27.222 0:0:0:0:0:ffff:ff42:1bde
255.66.27.223 0:0:0:0:0:ffff:ff42:1bdf
255.66.27.224 0:0:0:0:0:ffff:ff42:1be0
255.66.27.225 0:0:0:0:0:ffff:ff42:1be1
255.66.27.226 0:0:0:0:0:ffff:ff42:1be2
255.66.27.227 0:0:0:0:0:ffff:ff42:1be3
255.66.27.228 0:0:0:0:0:ffff:ff42:1be4
255.66.27.229 0:0:0:0:0:ffff:ff42:1be5
255.66.27.230 0:0:0:0:0:ffff:ff42:1be6
255.66.27.231 0:0:0:0:0:ffff:ff42:1be7
255.66.27.232 0:0:0:0:0:ffff:ff42:1be8
255.66.27.233 0:0:0:0:0:ffff:ff42:1be9
255.66.27.234 0:0:0:0:0:ffff:ff42:1bea
255.66.27.235 0:0:0:0:0:ffff:ff42:1beb
255.66.27.236 0:0:0:0:0:ffff:ff42:1bec
255.66.27.237 0:0:0:0:0:ffff:ff42:1bed
255.66.27.238 0:0:0:0:0:ffff:ff42:1bee
255.66.27.239 0:0:0:0:0:ffff:ff42:1bef
255.66.27.240 0:0:0:0:0:ffff:ff42:1bf0
255.66.27.241 0:0:0:0:0:ffff:ff42:1bf1
255.66.27.242 0:0:0:0:0:ffff:ff42:1bf2
255.66.27.243 0:0:0:0:0:ffff:ff42:1bf3
255.66.27.244 0:0:0:0:0:ffff:ff42:1bf4
255.66.27.245 0:0:0:0:0:ffff:ff42:1bf5
255.66.27.246 0:0:0:0:0:ffff:ff42:1bf6
255.66.27.247 0:0:0:0:0:ffff:ff42:1bf7
255.66.27.248 0:0:0:0:0:ffff:ff42:1bf8
255.66.27.249 0:0:0:0:0:ffff:ff42:1bf9
255.66.27.250 0:0:0:0:0:ffff:ff42:1bfa
255.66.27.251 0:0:0:0:0:ffff:ff42:1bfb
255.66.27.252 0:0:0:0:0:ffff:ff42:1bfc
255.66.27.253 0:0:0:0:0:ffff:ff42:1bfd
255.66.27.254 0:0:0:0:0:ffff:ff42:1bfe
255.66.27.255 0:0:0:0:0:ffff:ff42:1bff


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.