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
191.66.59.1 0:0:0:0:0:ffff:bf42:3b01
191.66.59.2 0:0:0:0:0:ffff:bf42:3b02
191.66.59.3 0:0:0:0:0:ffff:bf42:3b03
191.66.59.4 0:0:0:0:0:ffff:bf42:3b04
191.66.59.5 0:0:0:0:0:ffff:bf42:3b05
191.66.59.6 0:0:0:0:0:ffff:bf42:3b06
191.66.59.7 0:0:0:0:0:ffff:bf42:3b07
191.66.59.8 0:0:0:0:0:ffff:bf42:3b08
191.66.59.9 0:0:0:0:0:ffff:bf42:3b09
191.66.59.10 0:0:0:0:0:ffff:bf42:3b0a
191.66.59.11 0:0:0:0:0:ffff:bf42:3b0b
191.66.59.12 0:0:0:0:0:ffff:bf42:3b0c
191.66.59.13 0:0:0:0:0:ffff:bf42:3b0d
191.66.59.14 0:0:0:0:0:ffff:bf42:3b0e
191.66.59.15 0:0:0:0:0:ffff:bf42:3b0f
191.66.59.16 0:0:0:0:0:ffff:bf42:3b10
191.66.59.17 0:0:0:0:0:ffff:bf42:3b11
191.66.59.18 0:0:0:0:0:ffff:bf42:3b12
191.66.59.19 0:0:0:0:0:ffff:bf42:3b13
191.66.59.20 0:0:0:0:0:ffff:bf42:3b14
191.66.59.21 0:0:0:0:0:ffff:bf42:3b15
191.66.59.22 0:0:0:0:0:ffff:bf42:3b16
191.66.59.23 0:0:0:0:0:ffff:bf42:3b17
191.66.59.24 0:0:0:0:0:ffff:bf42:3b18
191.66.59.25 0:0:0:0:0:ffff:bf42:3b19
191.66.59.26 0:0:0:0:0:ffff:bf42:3b1a
191.66.59.27 0:0:0:0:0:ffff:bf42:3b1b
191.66.59.28 0:0:0:0:0:ffff:bf42:3b1c
191.66.59.29 0:0:0:0:0:ffff:bf42:3b1d
191.66.59.30 0:0:0:0:0:ffff:bf42:3b1e
191.66.59.31 0:0:0:0:0:ffff:bf42:3b1f
191.66.59.32 0:0:0:0:0:ffff:bf42:3b20
191.66.59.33 0:0:0:0:0:ffff:bf42:3b21
191.66.59.34 0:0:0:0:0:ffff:bf42:3b22
191.66.59.35 0:0:0:0:0:ffff:bf42:3b23
191.66.59.36 0:0:0:0:0:ffff:bf42:3b24
191.66.59.37 0:0:0:0:0:ffff:bf42:3b25
191.66.59.38 0:0:0:0:0:ffff:bf42:3b26
191.66.59.39 0:0:0:0:0:ffff:bf42:3b27
191.66.59.40 0:0:0:0:0:ffff:bf42:3b28
191.66.59.41 0:0:0:0:0:ffff:bf42:3b29
191.66.59.42 0:0:0:0:0:ffff:bf42:3b2a
191.66.59.43 0:0:0:0:0:ffff:bf42:3b2b
191.66.59.44 0:0:0:0:0:ffff:bf42:3b2c
191.66.59.45 0:0:0:0:0:ffff:bf42:3b2d
191.66.59.46 0:0:0:0:0:ffff:bf42:3b2e
191.66.59.47 0:0:0:0:0:ffff:bf42:3b2f
191.66.59.48 0:0:0:0:0:ffff:bf42:3b30
191.66.59.49 0:0:0:0:0:ffff:bf42:3b31
191.66.59.50 0:0:0:0:0:ffff:bf42:3b32
191.66.59.51 0:0:0:0:0:ffff:bf42:3b33
191.66.59.52 0:0:0:0:0:ffff:bf42:3b34
191.66.59.53 0:0:0:0:0:ffff:bf42:3b35
191.66.59.54 0:0:0:0:0:ffff:bf42:3b36
191.66.59.55 0:0:0:0:0:ffff:bf42:3b37
191.66.59.56 0:0:0:0:0:ffff:bf42:3b38
191.66.59.57 0:0:0:0:0:ffff:bf42:3b39
191.66.59.58 0:0:0:0:0:ffff:bf42:3b3a
191.66.59.59 0:0:0:0:0:ffff:bf42:3b3b
191.66.59.60 0:0:0:0:0:ffff:bf42:3b3c


191.66.59.61 0:0:0:0:0:ffff:bf42:3b3d
191.66.59.62 0:0:0:0:0:ffff:bf42:3b3e
191.66.59.63 0:0:0:0:0:ffff:bf42:3b3f
191.66.59.64 0:0:0:0:0:ffff:bf42:3b40
191.66.59.65 0:0:0:0:0:ffff:bf42:3b41
191.66.59.66 0:0:0:0:0:ffff:bf42:3b42
191.66.59.67 0:0:0:0:0:ffff:bf42:3b43
191.66.59.68 0:0:0:0:0:ffff:bf42:3b44
191.66.59.69 0:0:0:0:0:ffff:bf42:3b45
191.66.59.70 0:0:0:0:0:ffff:bf42:3b46
191.66.59.71 0:0:0:0:0:ffff:bf42:3b47
191.66.59.72 0:0:0:0:0:ffff:bf42:3b48
191.66.59.73 0:0:0:0:0:ffff:bf42:3b49
191.66.59.74 0:0:0:0:0:ffff:bf42:3b4a
191.66.59.75 0:0:0:0:0:ffff:bf42:3b4b
191.66.59.76 0:0:0:0:0:ffff:bf42:3b4c
191.66.59.77 0:0:0:0:0:ffff:bf42:3b4d
191.66.59.78 0:0:0:0:0:ffff:bf42:3b4e
191.66.59.79 0:0:0:0:0:ffff:bf42:3b4f
191.66.59.80 0:0:0:0:0:ffff:bf42:3b50
191.66.59.81 0:0:0:0:0:ffff:bf42:3b51
191.66.59.82 0:0:0:0:0:ffff:bf42:3b52
191.66.59.83 0:0:0:0:0:ffff:bf42:3b53
191.66.59.84 0:0:0:0:0:ffff:bf42:3b54
191.66.59.85 0:0:0:0:0:ffff:bf42:3b55
191.66.59.86 0:0:0:0:0:ffff:bf42:3b56
191.66.59.87 0:0:0:0:0:ffff:bf42:3b57
191.66.59.88 0:0:0:0:0:ffff:bf42:3b58
191.66.59.89 0:0:0:0:0:ffff:bf42:3b59
191.66.59.90 0:0:0:0:0:ffff:bf42:3b5a
191.66.59.91 0:0:0:0:0:ffff:bf42:3b5b
191.66.59.92 0:0:0:0:0:ffff:bf42:3b5c
191.66.59.93 0:0:0:0:0:ffff:bf42:3b5d
191.66.59.94 0:0:0:0:0:ffff:bf42:3b5e
191.66.59.95 0:0:0:0:0:ffff:bf42:3b5f
191.66.59.96 0:0:0:0:0:ffff:bf42:3b60
191.66.59.97 0:0:0:0:0:ffff:bf42:3b61
191.66.59.98 0:0:0:0:0:ffff:bf42:3b62
191.66.59.99 0:0:0:0:0:ffff:bf42:3b63
191.66.59.100 0:0:0:0:0:ffff:bf42:3b64
191.66.59.101 0:0:0:0:0:ffff:bf42:3b65
191.66.59.102 0:0:0:0:0:ffff:bf42:3b66
191.66.59.103 0:0:0:0:0:ffff:bf42:3b67
191.66.59.104 0:0:0:0:0:ffff:bf42:3b68
191.66.59.105 0:0:0:0:0:ffff:bf42:3b69
191.66.59.106 0:0:0:0:0:ffff:bf42:3b6a
191.66.59.107 0:0:0:0:0:ffff:bf42:3b6b
191.66.59.108 0:0:0:0:0:ffff:bf42:3b6c
191.66.59.109 0:0:0:0:0:ffff:bf42:3b6d
191.66.59.110 0:0:0:0:0:ffff:bf42:3b6e
191.66.59.111 0:0:0:0:0:ffff:bf42:3b6f
191.66.59.112 0:0:0:0:0:ffff:bf42:3b70
191.66.59.113 0:0:0:0:0:ffff:bf42:3b71
191.66.59.114 0:0:0:0:0:ffff:bf42:3b72
191.66.59.115 0:0:0:0:0:ffff:bf42:3b73
191.66.59.116 0:0:0:0:0:ffff:bf42:3b74
191.66.59.117 0:0:0:0:0:ffff:bf42:3b75
191.66.59.118 0:0:0:0:0:ffff:bf42:3b76
191.66.59.119 0:0:0:0:0:ffff:bf42:3b77
191.66.59.120 0:0:0:0:0:ffff:bf42:3b78


191.66.59.121 0:0:0:0:0:ffff:bf42:3b79
191.66.59.122 0:0:0:0:0:ffff:bf42:3b7a
191.66.59.123 0:0:0:0:0:ffff:bf42:3b7b
191.66.59.124 0:0:0:0:0:ffff:bf42:3b7c
191.66.59.125 0:0:0:0:0:ffff:bf42:3b7d
191.66.59.126 0:0:0:0:0:ffff:bf42:3b7e
191.66.59.127 0:0:0:0:0:ffff:bf42:3b7f
191.66.59.128 0:0:0:0:0:ffff:bf42:3b80
191.66.59.129 0:0:0:0:0:ffff:bf42:3b81
191.66.59.130 0:0:0:0:0:ffff:bf42:3b82
191.66.59.131 0:0:0:0:0:ffff:bf42:3b83
191.66.59.132 0:0:0:0:0:ffff:bf42:3b84
191.66.59.133 0:0:0:0:0:ffff:bf42:3b85
191.66.59.134 0:0:0:0:0:ffff:bf42:3b86
191.66.59.135 0:0:0:0:0:ffff:bf42:3b87
191.66.59.136 0:0:0:0:0:ffff:bf42:3b88
191.66.59.137 0:0:0:0:0:ffff:bf42:3b89
191.66.59.138 0:0:0:0:0:ffff:bf42:3b8a
191.66.59.139 0:0:0:0:0:ffff:bf42:3b8b
191.66.59.140 0:0:0:0:0:ffff:bf42:3b8c
191.66.59.141 0:0:0:0:0:ffff:bf42:3b8d
191.66.59.142 0:0:0:0:0:ffff:bf42:3b8e
191.66.59.143 0:0:0:0:0:ffff:bf42:3b8f
191.66.59.144 0:0:0:0:0:ffff:bf42:3b90
191.66.59.145 0:0:0:0:0:ffff:bf42:3b91
191.66.59.146 0:0:0:0:0:ffff:bf42:3b92
191.66.59.147 0:0:0:0:0:ffff:bf42:3b93
191.66.59.148 0:0:0:0:0:ffff:bf42:3b94
191.66.59.149 0:0:0:0:0:ffff:bf42:3b95
191.66.59.150 0:0:0:0:0:ffff:bf42:3b96
191.66.59.151 0:0:0:0:0:ffff:bf42:3b97
191.66.59.152 0:0:0:0:0:ffff:bf42:3b98
191.66.59.153 0:0:0:0:0:ffff:bf42:3b99
191.66.59.154 0:0:0:0:0:ffff:bf42:3b9a
191.66.59.155 0:0:0:0:0:ffff:bf42:3b9b
191.66.59.156 0:0:0:0:0:ffff:bf42:3b9c
191.66.59.157 0:0:0:0:0:ffff:bf42:3b9d
191.66.59.158 0:0:0:0:0:ffff:bf42:3b9e
191.66.59.159 0:0:0:0:0:ffff:bf42:3b9f
191.66.59.160 0:0:0:0:0:ffff:bf42:3ba0
191.66.59.161 0:0:0:0:0:ffff:bf42:3ba1
191.66.59.162 0:0:0:0:0:ffff:bf42:3ba2
191.66.59.163 0:0:0:0:0:ffff:bf42:3ba3
191.66.59.164 0:0:0:0:0:ffff:bf42:3ba4
191.66.59.165 0:0:0:0:0:ffff:bf42:3ba5
191.66.59.166 0:0:0:0:0:ffff:bf42:3ba6
191.66.59.167 0:0:0:0:0:ffff:bf42:3ba7
191.66.59.168 0:0:0:0:0:ffff:bf42:3ba8
191.66.59.169 0:0:0:0:0:ffff:bf42:3ba9
191.66.59.170 0:0:0:0:0:ffff:bf42:3baa
191.66.59.171 0:0:0:0:0:ffff:bf42:3bab
191.66.59.172 0:0:0:0:0:ffff:bf42:3bac
191.66.59.173 0:0:0:0:0:ffff:bf42:3bad
191.66.59.174 0:0:0:0:0:ffff:bf42:3bae
191.66.59.175 0:0:0:0:0:ffff:bf42:3baf
191.66.59.176 0:0:0:0:0:ffff:bf42:3bb0
191.66.59.177 0:0:0:0:0:ffff:bf42:3bb1
191.66.59.178 0:0:0:0:0:ffff:bf42:3bb2
191.66.59.179 0:0:0:0:0:ffff:bf42:3bb3
191.66.59.180 0:0:0:0:0:ffff:bf42:3bb4


191.66.59.181 0:0:0:0:0:ffff:bf42:3bb5
191.66.59.182 0:0:0:0:0:ffff:bf42:3bb6
191.66.59.183 0:0:0:0:0:ffff:bf42:3bb7
191.66.59.184 0:0:0:0:0:ffff:bf42:3bb8
191.66.59.185 0:0:0:0:0:ffff:bf42:3bb9
191.66.59.186 0:0:0:0:0:ffff:bf42:3bba
191.66.59.187 0:0:0:0:0:ffff:bf42:3bbb
191.66.59.188 0:0:0:0:0:ffff:bf42:3bbc
191.66.59.189 0:0:0:0:0:ffff:bf42:3bbd
191.66.59.190 0:0:0:0:0:ffff:bf42:3bbe
191.66.59.191 0:0:0:0:0:ffff:bf42:3bbf
191.66.59.192 0:0:0:0:0:ffff:bf42:3bc0
191.66.59.193 0:0:0:0:0:ffff:bf42:3bc1
191.66.59.194 0:0:0:0:0:ffff:bf42:3bc2
191.66.59.195 0:0:0:0:0:ffff:bf42:3bc3
191.66.59.196 0:0:0:0:0:ffff:bf42:3bc4
191.66.59.197 0:0:0:0:0:ffff:bf42:3bc5
191.66.59.198 0:0:0:0:0:ffff:bf42:3bc6
191.66.59.199 0:0:0:0:0:ffff:bf42:3bc7
191.66.59.200 0:0:0:0:0:ffff:bf42:3bc8
191.66.59.201 0:0:0:0:0:ffff:bf42:3bc9
191.66.59.202 0:0:0:0:0:ffff:bf42:3bca
191.66.59.203 0:0:0:0:0:ffff:bf42:3bcb
191.66.59.204 0:0:0:0:0:ffff:bf42:3bcc
191.66.59.205 0:0:0:0:0:ffff:bf42:3bcd
191.66.59.206 0:0:0:0:0:ffff:bf42:3bce
191.66.59.207 0:0:0:0:0:ffff:bf42:3bcf
191.66.59.208 0:0:0:0:0:ffff:bf42:3bd0
191.66.59.209 0:0:0:0:0:ffff:bf42:3bd1
191.66.59.210 0:0:0:0:0:ffff:bf42:3bd2
191.66.59.211 0:0:0:0:0:ffff:bf42:3bd3
191.66.59.212 0:0:0:0:0:ffff:bf42:3bd4
191.66.59.213 0:0:0:0:0:ffff:bf42:3bd5
191.66.59.214 0:0:0:0:0:ffff:bf42:3bd6
191.66.59.215 0:0:0:0:0:ffff:bf42:3bd7
191.66.59.216 0:0:0:0:0:ffff:bf42:3bd8
191.66.59.217 0:0:0:0:0:ffff:bf42:3bd9
191.66.59.218 0:0:0:0:0:ffff:bf42:3bda
191.66.59.219 0:0:0:0:0:ffff:bf42:3bdb
191.66.59.220 0:0:0:0:0:ffff:bf42:3bdc
191.66.59.221 0:0:0:0:0:ffff:bf42:3bdd
191.66.59.222 0:0:0:0:0:ffff:bf42:3bde
191.66.59.223 0:0:0:0:0:ffff:bf42:3bdf
191.66.59.224 0:0:0:0:0:ffff:bf42:3be0
191.66.59.225 0:0:0:0:0:ffff:bf42:3be1
191.66.59.226 0:0:0:0:0:ffff:bf42:3be2
191.66.59.227 0:0:0:0:0:ffff:bf42:3be3
191.66.59.228 0:0:0:0:0:ffff:bf42:3be4
191.66.59.229 0:0:0:0:0:ffff:bf42:3be5
191.66.59.230 0:0:0:0:0:ffff:bf42:3be6
191.66.59.231 0:0:0:0:0:ffff:bf42:3be7
191.66.59.232 0:0:0:0:0:ffff:bf42:3be8
191.66.59.233 0:0:0:0:0:ffff:bf42:3be9
191.66.59.234 0:0:0:0:0:ffff:bf42:3bea
191.66.59.235 0:0:0:0:0:ffff:bf42:3beb
191.66.59.236 0:0:0:0:0:ffff:bf42:3bec
191.66.59.237 0:0:0:0:0:ffff:bf42:3bed
191.66.59.238 0:0:0:0:0:ffff:bf42:3bee
191.66.59.239 0:0:0:0:0:ffff:bf42:3bef
191.66.59.240 0:0:0:0:0:ffff:bf42:3bf0
191.66.59.241 0:0:0:0:0:ffff:bf42:3bf1
191.66.59.242 0:0:0:0:0:ffff:bf42:3bf2
191.66.59.243 0:0:0:0:0:ffff:bf42:3bf3
191.66.59.244 0:0:0:0:0:ffff:bf42:3bf4
191.66.59.245 0:0:0:0:0:ffff:bf42:3bf5
191.66.59.246 0:0:0:0:0:ffff:bf42:3bf6
191.66.59.247 0:0:0:0:0:ffff:bf42:3bf7
191.66.59.248 0:0:0:0:0:ffff:bf42:3bf8
191.66.59.249 0:0:0:0:0:ffff:bf42:3bf9
191.66.59.250 0:0:0:0:0:ffff:bf42:3bfa
191.66.59.251 0:0:0:0:0:ffff:bf42:3bfb
191.66.59.252 0:0:0:0:0:ffff:bf42:3bfc
191.66.59.253 0:0:0:0:0:ffff:bf42:3bfd
191.66.59.254 0:0:0:0:0:ffff:bf42:3bfe
191.66.59.255 0:0:0:0:0:ffff:bf42:3bff


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.