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
200.18.15.1 0:0:0:0:0:ffff:c812:f01
200.18.15.2 0:0:0:0:0:ffff:c812:f02
200.18.15.3 0:0:0:0:0:ffff:c812:f03
200.18.15.4 0:0:0:0:0:ffff:c812:f04
200.18.15.5 0:0:0:0:0:ffff:c812:f05
200.18.15.6 0:0:0:0:0:ffff:c812:f06
200.18.15.7 0:0:0:0:0:ffff:c812:f07
200.18.15.8 0:0:0:0:0:ffff:c812:f08
200.18.15.9 0:0:0:0:0:ffff:c812:f09
200.18.15.10 0:0:0:0:0:ffff:c812:f0a
200.18.15.11 0:0:0:0:0:ffff:c812:f0b
200.18.15.12 0:0:0:0:0:ffff:c812:f0c
200.18.15.13 0:0:0:0:0:ffff:c812:f0d
200.18.15.14 0:0:0:0:0:ffff:c812:f0e
200.18.15.15 0:0:0:0:0:ffff:c812:f0f
200.18.15.16 0:0:0:0:0:ffff:c812:f10
200.18.15.17 0:0:0:0:0:ffff:c812:f11
200.18.15.18 0:0:0:0:0:ffff:c812:f12
200.18.15.19 0:0:0:0:0:ffff:c812:f13
200.18.15.20 0:0:0:0:0:ffff:c812:f14
200.18.15.21 0:0:0:0:0:ffff:c812:f15
200.18.15.22 0:0:0:0:0:ffff:c812:f16
200.18.15.23 0:0:0:0:0:ffff:c812:f17
200.18.15.24 0:0:0:0:0:ffff:c812:f18
200.18.15.25 0:0:0:0:0:ffff:c812:f19
200.18.15.26 0:0:0:0:0:ffff:c812:f1a
200.18.15.27 0:0:0:0:0:ffff:c812:f1b
200.18.15.28 0:0:0:0:0:ffff:c812:f1c
200.18.15.29 0:0:0:0:0:ffff:c812:f1d
200.18.15.30 0:0:0:0:0:ffff:c812:f1e
200.18.15.31 0:0:0:0:0:ffff:c812:f1f
200.18.15.32 0:0:0:0:0:ffff:c812:f20
200.18.15.33 0:0:0:0:0:ffff:c812:f21
200.18.15.34 0:0:0:0:0:ffff:c812:f22
200.18.15.35 0:0:0:0:0:ffff:c812:f23
200.18.15.36 0:0:0:0:0:ffff:c812:f24
200.18.15.37 0:0:0:0:0:ffff:c812:f25
200.18.15.38 0:0:0:0:0:ffff:c812:f26
200.18.15.39 0:0:0:0:0:ffff:c812:f27
200.18.15.40 0:0:0:0:0:ffff:c812:f28
200.18.15.41 0:0:0:0:0:ffff:c812:f29
200.18.15.42 0:0:0:0:0:ffff:c812:f2a
200.18.15.43 0:0:0:0:0:ffff:c812:f2b
200.18.15.44 0:0:0:0:0:ffff:c812:f2c
200.18.15.45 0:0:0:0:0:ffff:c812:f2d
200.18.15.46 0:0:0:0:0:ffff:c812:f2e
200.18.15.47 0:0:0:0:0:ffff:c812:f2f
200.18.15.48 0:0:0:0:0:ffff:c812:f30
200.18.15.49 0:0:0:0:0:ffff:c812:f31
200.18.15.50 0:0:0:0:0:ffff:c812:f32
200.18.15.51 0:0:0:0:0:ffff:c812:f33
200.18.15.52 0:0:0:0:0:ffff:c812:f34
200.18.15.53 0:0:0:0:0:ffff:c812:f35
200.18.15.54 0:0:0:0:0:ffff:c812:f36
200.18.15.55 0:0:0:0:0:ffff:c812:f37
200.18.15.56 0:0:0:0:0:ffff:c812:f38
200.18.15.57 0:0:0:0:0:ffff:c812:f39
200.18.15.58 0:0:0:0:0:ffff:c812:f3a
200.18.15.59 0:0:0:0:0:ffff:c812:f3b
200.18.15.60 0:0:0:0:0:ffff:c812:f3c


200.18.15.61 0:0:0:0:0:ffff:c812:f3d
200.18.15.62 0:0:0:0:0:ffff:c812:f3e
200.18.15.63 0:0:0:0:0:ffff:c812:f3f
200.18.15.64 0:0:0:0:0:ffff:c812:f40
200.18.15.65 0:0:0:0:0:ffff:c812:f41
200.18.15.66 0:0:0:0:0:ffff:c812:f42
200.18.15.67 0:0:0:0:0:ffff:c812:f43
200.18.15.68 0:0:0:0:0:ffff:c812:f44
200.18.15.69 0:0:0:0:0:ffff:c812:f45
200.18.15.70 0:0:0:0:0:ffff:c812:f46
200.18.15.71 0:0:0:0:0:ffff:c812:f47
200.18.15.72 0:0:0:0:0:ffff:c812:f48
200.18.15.73 0:0:0:0:0:ffff:c812:f49
200.18.15.74 0:0:0:0:0:ffff:c812:f4a
200.18.15.75 0:0:0:0:0:ffff:c812:f4b
200.18.15.76 0:0:0:0:0:ffff:c812:f4c
200.18.15.77 0:0:0:0:0:ffff:c812:f4d
200.18.15.78 0:0:0:0:0:ffff:c812:f4e
200.18.15.79 0:0:0:0:0:ffff:c812:f4f
200.18.15.80 0:0:0:0:0:ffff:c812:f50
200.18.15.81 0:0:0:0:0:ffff:c812:f51
200.18.15.82 0:0:0:0:0:ffff:c812:f52
200.18.15.83 0:0:0:0:0:ffff:c812:f53
200.18.15.84 0:0:0:0:0:ffff:c812:f54
200.18.15.85 0:0:0:0:0:ffff:c812:f55
200.18.15.86 0:0:0:0:0:ffff:c812:f56
200.18.15.87 0:0:0:0:0:ffff:c812:f57
200.18.15.88 0:0:0:0:0:ffff:c812:f58
200.18.15.89 0:0:0:0:0:ffff:c812:f59
200.18.15.90 0:0:0:0:0:ffff:c812:f5a
200.18.15.91 0:0:0:0:0:ffff:c812:f5b
200.18.15.92 0:0:0:0:0:ffff:c812:f5c
200.18.15.93 0:0:0:0:0:ffff:c812:f5d
200.18.15.94 0:0:0:0:0:ffff:c812:f5e
200.18.15.95 0:0:0:0:0:ffff:c812:f5f
200.18.15.96 0:0:0:0:0:ffff:c812:f60
200.18.15.97 0:0:0:0:0:ffff:c812:f61
200.18.15.98 0:0:0:0:0:ffff:c812:f62
200.18.15.99 0:0:0:0:0:ffff:c812:f63
200.18.15.100 0:0:0:0:0:ffff:c812:f64
200.18.15.101 0:0:0:0:0:ffff:c812:f65
200.18.15.102 0:0:0:0:0:ffff:c812:f66
200.18.15.103 0:0:0:0:0:ffff:c812:f67
200.18.15.104 0:0:0:0:0:ffff:c812:f68
200.18.15.105 0:0:0:0:0:ffff:c812:f69
200.18.15.106 0:0:0:0:0:ffff:c812:f6a
200.18.15.107 0:0:0:0:0:ffff:c812:f6b
200.18.15.108 0:0:0:0:0:ffff:c812:f6c
200.18.15.109 0:0:0:0:0:ffff:c812:f6d
200.18.15.110 0:0:0:0:0:ffff:c812:f6e
200.18.15.111 0:0:0:0:0:ffff:c812:f6f
200.18.15.112 0:0:0:0:0:ffff:c812:f70
200.18.15.113 0:0:0:0:0:ffff:c812:f71
200.18.15.114 0:0:0:0:0:ffff:c812:f72
200.18.15.115 0:0:0:0:0:ffff:c812:f73
200.18.15.116 0:0:0:0:0:ffff:c812:f74
200.18.15.117 0:0:0:0:0:ffff:c812:f75
200.18.15.118 0:0:0:0:0:ffff:c812:f76
200.18.15.119 0:0:0:0:0:ffff:c812:f77
200.18.15.120 0:0:0:0:0:ffff:c812:f78


200.18.15.121 0:0:0:0:0:ffff:c812:f79
200.18.15.122 0:0:0:0:0:ffff:c812:f7a
200.18.15.123 0:0:0:0:0:ffff:c812:f7b
200.18.15.124 0:0:0:0:0:ffff:c812:f7c
200.18.15.125 0:0:0:0:0:ffff:c812:f7d
200.18.15.126 0:0:0:0:0:ffff:c812:f7e
200.18.15.127 0:0:0:0:0:ffff:c812:f7f
200.18.15.128 0:0:0:0:0:ffff:c812:f80
200.18.15.129 0:0:0:0:0:ffff:c812:f81
200.18.15.130 0:0:0:0:0:ffff:c812:f82
200.18.15.131 0:0:0:0:0:ffff:c812:f83
200.18.15.132 0:0:0:0:0:ffff:c812:f84
200.18.15.133 0:0:0:0:0:ffff:c812:f85
200.18.15.134 0:0:0:0:0:ffff:c812:f86
200.18.15.135 0:0:0:0:0:ffff:c812:f87
200.18.15.136 0:0:0:0:0:ffff:c812:f88
200.18.15.137 0:0:0:0:0:ffff:c812:f89
200.18.15.138 0:0:0:0:0:ffff:c812:f8a
200.18.15.139 0:0:0:0:0:ffff:c812:f8b
200.18.15.140 0:0:0:0:0:ffff:c812:f8c
200.18.15.141 0:0:0:0:0:ffff:c812:f8d
200.18.15.142 0:0:0:0:0:ffff:c812:f8e
200.18.15.143 0:0:0:0:0:ffff:c812:f8f
200.18.15.144 0:0:0:0:0:ffff:c812:f90
200.18.15.145 0:0:0:0:0:ffff:c812:f91
200.18.15.146 0:0:0:0:0:ffff:c812:f92
200.18.15.147 0:0:0:0:0:ffff:c812:f93
200.18.15.148 0:0:0:0:0:ffff:c812:f94
200.18.15.149 0:0:0:0:0:ffff:c812:f95
200.18.15.150 0:0:0:0:0:ffff:c812:f96
200.18.15.151 0:0:0:0:0:ffff:c812:f97
200.18.15.152 0:0:0:0:0:ffff:c812:f98
200.18.15.153 0:0:0:0:0:ffff:c812:f99
200.18.15.154 0:0:0:0:0:ffff:c812:f9a
200.18.15.155 0:0:0:0:0:ffff:c812:f9b
200.18.15.156 0:0:0:0:0:ffff:c812:f9c
200.18.15.157 0:0:0:0:0:ffff:c812:f9d
200.18.15.158 0:0:0:0:0:ffff:c812:f9e
200.18.15.159 0:0:0:0:0:ffff:c812:f9f
200.18.15.160 0:0:0:0:0:ffff:c812:fa0
200.18.15.161 0:0:0:0:0:ffff:c812:fa1
200.18.15.162 0:0:0:0:0:ffff:c812:fa2
200.18.15.163 0:0:0:0:0:ffff:c812:fa3
200.18.15.164 0:0:0:0:0:ffff:c812:fa4
200.18.15.165 0:0:0:0:0:ffff:c812:fa5
200.18.15.166 0:0:0:0:0:ffff:c812:fa6
200.18.15.167 0:0:0:0:0:ffff:c812:fa7
200.18.15.168 0:0:0:0:0:ffff:c812:fa8
200.18.15.169 0:0:0:0:0:ffff:c812:fa9
200.18.15.170 0:0:0:0:0:ffff:c812:faa
200.18.15.171 0:0:0:0:0:ffff:c812:fab
200.18.15.172 0:0:0:0:0:ffff:c812:fac
200.18.15.173 0:0:0:0:0:ffff:c812:fad
200.18.15.174 0:0:0:0:0:ffff:c812:fae
200.18.15.175 0:0:0:0:0:ffff:c812:faf
200.18.15.176 0:0:0:0:0:ffff:c812:fb0
200.18.15.177 0:0:0:0:0:ffff:c812:fb1
200.18.15.178 0:0:0:0:0:ffff:c812:fb2
200.18.15.179 0:0:0:0:0:ffff:c812:fb3
200.18.15.180 0:0:0:0:0:ffff:c812:fb4


200.18.15.181 0:0:0:0:0:ffff:c812:fb5
200.18.15.182 0:0:0:0:0:ffff:c812:fb6
200.18.15.183 0:0:0:0:0:ffff:c812:fb7
200.18.15.184 0:0:0:0:0:ffff:c812:fb8
200.18.15.185 0:0:0:0:0:ffff:c812:fb9
200.18.15.186 0:0:0:0:0:ffff:c812:fba
200.18.15.187 0:0:0:0:0:ffff:c812:fbb
200.18.15.188 0:0:0:0:0:ffff:c812:fbc
200.18.15.189 0:0:0:0:0:ffff:c812:fbd
200.18.15.190 0:0:0:0:0:ffff:c812:fbe
200.18.15.191 0:0:0:0:0:ffff:c812:fbf
200.18.15.192 0:0:0:0:0:ffff:c812:fc0
200.18.15.193 0:0:0:0:0:ffff:c812:fc1
200.18.15.194 0:0:0:0:0:ffff:c812:fc2
200.18.15.195 0:0:0:0:0:ffff:c812:fc3
200.18.15.196 0:0:0:0:0:ffff:c812:fc4
200.18.15.197 0:0:0:0:0:ffff:c812:fc5
200.18.15.198 0:0:0:0:0:ffff:c812:fc6
200.18.15.199 0:0:0:0:0:ffff:c812:fc7
200.18.15.200 0:0:0:0:0:ffff:c812:fc8
200.18.15.201 0:0:0:0:0:ffff:c812:fc9
200.18.15.202 0:0:0:0:0:ffff:c812:fca
200.18.15.203 0:0:0:0:0:ffff:c812:fcb
200.18.15.204 0:0:0:0:0:ffff:c812:fcc
200.18.15.205 0:0:0:0:0:ffff:c812:fcd
200.18.15.206 0:0:0:0:0:ffff:c812:fce
200.18.15.207 0:0:0:0:0:ffff:c812:fcf
200.18.15.208 0:0:0:0:0:ffff:c812:fd0
200.18.15.209 0:0:0:0:0:ffff:c812:fd1
200.18.15.210 0:0:0:0:0:ffff:c812:fd2
200.18.15.211 0:0:0:0:0:ffff:c812:fd3
200.18.15.212 0:0:0:0:0:ffff:c812:fd4
200.18.15.213 0:0:0:0:0:ffff:c812:fd5
200.18.15.214 0:0:0:0:0:ffff:c812:fd6
200.18.15.215 0:0:0:0:0:ffff:c812:fd7
200.18.15.216 0:0:0:0:0:ffff:c812:fd8
200.18.15.217 0:0:0:0:0:ffff:c812:fd9
200.18.15.218 0:0:0:0:0:ffff:c812:fda
200.18.15.219 0:0:0:0:0:ffff:c812:fdb
200.18.15.220 0:0:0:0:0:ffff:c812:fdc
200.18.15.221 0:0:0:0:0:ffff:c812:fdd
200.18.15.222 0:0:0:0:0:ffff:c812:fde
200.18.15.223 0:0:0:0:0:ffff:c812:fdf
200.18.15.224 0:0:0:0:0:ffff:c812:fe0
200.18.15.225 0:0:0:0:0:ffff:c812:fe1
200.18.15.226 0:0:0:0:0:ffff:c812:fe2
200.18.15.227 0:0:0:0:0:ffff:c812:fe3
200.18.15.228 0:0:0:0:0:ffff:c812:fe4
200.18.15.229 0:0:0:0:0:ffff:c812:fe5
200.18.15.230 0:0:0:0:0:ffff:c812:fe6
200.18.15.231 0:0:0:0:0:ffff:c812:fe7
200.18.15.232 0:0:0:0:0:ffff:c812:fe8
200.18.15.233 0:0:0:0:0:ffff:c812:fe9
200.18.15.234 0:0:0:0:0:ffff:c812:fea
200.18.15.235 0:0:0:0:0:ffff:c812:feb
200.18.15.236 0:0:0:0:0:ffff:c812:fec
200.18.15.237 0:0:0:0:0:ffff:c812:fed
200.18.15.238 0:0:0:0:0:ffff:c812:fee
200.18.15.239 0:0:0:0:0:ffff:c812:fef
200.18.15.240 0:0:0:0:0:ffff:c812:ff0
200.18.15.241 0:0:0:0:0:ffff:c812:ff1
200.18.15.242 0:0:0:0:0:ffff:c812:ff2
200.18.15.243 0:0:0:0:0:ffff:c812:ff3
200.18.15.244 0:0:0:0:0:ffff:c812:ff4
200.18.15.245 0:0:0:0:0:ffff:c812:ff5
200.18.15.246 0:0:0:0:0:ffff:c812:ff6
200.18.15.247 0:0:0:0:0:ffff:c812:ff7
200.18.15.248 0:0:0:0:0:ffff:c812:ff8
200.18.15.249 0:0:0:0:0:ffff:c812:ff9
200.18.15.250 0:0:0:0:0:ffff:c812:ffa
200.18.15.251 0:0:0:0:0:ffff:c812:ffb
200.18.15.252 0:0:0:0:0:ffff:c812:ffc
200.18.15.253 0:0:0:0:0:ffff:c812:ffd
200.18.15.254 0:0:0:0:0:ffff:c812:ffe
200.18.15.255 0:0:0:0:0:ffff:c812:fff


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.