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
203.153.66.1 0:0:0:0:0:ffff:cb99:4201
203.153.66.2 0:0:0:0:0:ffff:cb99:4202
203.153.66.3 0:0:0:0:0:ffff:cb99:4203
203.153.66.4 0:0:0:0:0:ffff:cb99:4204
203.153.66.5 0:0:0:0:0:ffff:cb99:4205
203.153.66.6 0:0:0:0:0:ffff:cb99:4206
203.153.66.7 0:0:0:0:0:ffff:cb99:4207
203.153.66.8 0:0:0:0:0:ffff:cb99:4208
203.153.66.9 0:0:0:0:0:ffff:cb99:4209
203.153.66.10 0:0:0:0:0:ffff:cb99:420a
203.153.66.11 0:0:0:0:0:ffff:cb99:420b
203.153.66.12 0:0:0:0:0:ffff:cb99:420c
203.153.66.13 0:0:0:0:0:ffff:cb99:420d
203.153.66.14 0:0:0:0:0:ffff:cb99:420e
203.153.66.15 0:0:0:0:0:ffff:cb99:420f
203.153.66.16 0:0:0:0:0:ffff:cb99:4210
203.153.66.17 0:0:0:0:0:ffff:cb99:4211
203.153.66.18 0:0:0:0:0:ffff:cb99:4212
203.153.66.19 0:0:0:0:0:ffff:cb99:4213
203.153.66.20 0:0:0:0:0:ffff:cb99:4214
203.153.66.21 0:0:0:0:0:ffff:cb99:4215
203.153.66.22 0:0:0:0:0:ffff:cb99:4216
203.153.66.23 0:0:0:0:0:ffff:cb99:4217
203.153.66.24 0:0:0:0:0:ffff:cb99:4218
203.153.66.25 0:0:0:0:0:ffff:cb99:4219
203.153.66.26 0:0:0:0:0:ffff:cb99:421a
203.153.66.27 0:0:0:0:0:ffff:cb99:421b
203.153.66.28 0:0:0:0:0:ffff:cb99:421c
203.153.66.29 0:0:0:0:0:ffff:cb99:421d
203.153.66.30 0:0:0:0:0:ffff:cb99:421e
203.153.66.31 0:0:0:0:0:ffff:cb99:421f
203.153.66.32 0:0:0:0:0:ffff:cb99:4220
203.153.66.33 0:0:0:0:0:ffff:cb99:4221
203.153.66.34 0:0:0:0:0:ffff:cb99:4222
203.153.66.35 0:0:0:0:0:ffff:cb99:4223
203.153.66.36 0:0:0:0:0:ffff:cb99:4224
203.153.66.37 0:0:0:0:0:ffff:cb99:4225
203.153.66.38 0:0:0:0:0:ffff:cb99:4226
203.153.66.39 0:0:0:0:0:ffff:cb99:4227
203.153.66.40 0:0:0:0:0:ffff:cb99:4228
203.153.66.41 0:0:0:0:0:ffff:cb99:4229
203.153.66.42 0:0:0:0:0:ffff:cb99:422a
203.153.66.43 0:0:0:0:0:ffff:cb99:422b
203.153.66.44 0:0:0:0:0:ffff:cb99:422c
203.153.66.45 0:0:0:0:0:ffff:cb99:422d
203.153.66.46 0:0:0:0:0:ffff:cb99:422e
203.153.66.47 0:0:0:0:0:ffff:cb99:422f
203.153.66.48 0:0:0:0:0:ffff:cb99:4230
203.153.66.49 0:0:0:0:0:ffff:cb99:4231
203.153.66.50 0:0:0:0:0:ffff:cb99:4232
203.153.66.51 0:0:0:0:0:ffff:cb99:4233
203.153.66.52 0:0:0:0:0:ffff:cb99:4234
203.153.66.53 0:0:0:0:0:ffff:cb99:4235
203.153.66.54 0:0:0:0:0:ffff:cb99:4236
203.153.66.55 0:0:0:0:0:ffff:cb99:4237
203.153.66.56 0:0:0:0:0:ffff:cb99:4238
203.153.66.57 0:0:0:0:0:ffff:cb99:4239
203.153.66.58 0:0:0:0:0:ffff:cb99:423a
203.153.66.59 0:0:0:0:0:ffff:cb99:423b
203.153.66.60 0:0:0:0:0:ffff:cb99:423c


203.153.66.61 0:0:0:0:0:ffff:cb99:423d
203.153.66.62 0:0:0:0:0:ffff:cb99:423e
203.153.66.63 0:0:0:0:0:ffff:cb99:423f
203.153.66.64 0:0:0:0:0:ffff:cb99:4240
203.153.66.65 0:0:0:0:0:ffff:cb99:4241
203.153.66.66 0:0:0:0:0:ffff:cb99:4242
203.153.66.67 0:0:0:0:0:ffff:cb99:4243
203.153.66.68 0:0:0:0:0:ffff:cb99:4244
203.153.66.69 0:0:0:0:0:ffff:cb99:4245
203.153.66.70 0:0:0:0:0:ffff:cb99:4246
203.153.66.71 0:0:0:0:0:ffff:cb99:4247
203.153.66.72 0:0:0:0:0:ffff:cb99:4248
203.153.66.73 0:0:0:0:0:ffff:cb99:4249
203.153.66.74 0:0:0:0:0:ffff:cb99:424a
203.153.66.75 0:0:0:0:0:ffff:cb99:424b
203.153.66.76 0:0:0:0:0:ffff:cb99:424c
203.153.66.77 0:0:0:0:0:ffff:cb99:424d
203.153.66.78 0:0:0:0:0:ffff:cb99:424e
203.153.66.79 0:0:0:0:0:ffff:cb99:424f
203.153.66.80 0:0:0:0:0:ffff:cb99:4250
203.153.66.81 0:0:0:0:0:ffff:cb99:4251
203.153.66.82 0:0:0:0:0:ffff:cb99:4252
203.153.66.83 0:0:0:0:0:ffff:cb99:4253
203.153.66.84 0:0:0:0:0:ffff:cb99:4254
203.153.66.85 0:0:0:0:0:ffff:cb99:4255
203.153.66.86 0:0:0:0:0:ffff:cb99:4256
203.153.66.87 0:0:0:0:0:ffff:cb99:4257
203.153.66.88 0:0:0:0:0:ffff:cb99:4258
203.153.66.89 0:0:0:0:0:ffff:cb99:4259
203.153.66.90 0:0:0:0:0:ffff:cb99:425a
203.153.66.91 0:0:0:0:0:ffff:cb99:425b
203.153.66.92 0:0:0:0:0:ffff:cb99:425c
203.153.66.93 0:0:0:0:0:ffff:cb99:425d
203.153.66.94 0:0:0:0:0:ffff:cb99:425e
203.153.66.95 0:0:0:0:0:ffff:cb99:425f
203.153.66.96 0:0:0:0:0:ffff:cb99:4260
203.153.66.97 0:0:0:0:0:ffff:cb99:4261
203.153.66.98 0:0:0:0:0:ffff:cb99:4262
203.153.66.99 0:0:0:0:0:ffff:cb99:4263
203.153.66.100 0:0:0:0:0:ffff:cb99:4264
203.153.66.101 0:0:0:0:0:ffff:cb99:4265
203.153.66.102 0:0:0:0:0:ffff:cb99:4266
203.153.66.103 0:0:0:0:0:ffff:cb99:4267
203.153.66.104 0:0:0:0:0:ffff:cb99:4268
203.153.66.105 0:0:0:0:0:ffff:cb99:4269
203.153.66.106 0:0:0:0:0:ffff:cb99:426a
203.153.66.107 0:0:0:0:0:ffff:cb99:426b
203.153.66.108 0:0:0:0:0:ffff:cb99:426c
203.153.66.109 0:0:0:0:0:ffff:cb99:426d
203.153.66.110 0:0:0:0:0:ffff:cb99:426e
203.153.66.111 0:0:0:0:0:ffff:cb99:426f
203.153.66.112 0:0:0:0:0:ffff:cb99:4270
203.153.66.113 0:0:0:0:0:ffff:cb99:4271
203.153.66.114 0:0:0:0:0:ffff:cb99:4272
203.153.66.115 0:0:0:0:0:ffff:cb99:4273
203.153.66.116 0:0:0:0:0:ffff:cb99:4274
203.153.66.117 0:0:0:0:0:ffff:cb99:4275
203.153.66.118 0:0:0:0:0:ffff:cb99:4276
203.153.66.119 0:0:0:0:0:ffff:cb99:4277
203.153.66.120 0:0:0:0:0:ffff:cb99:4278


203.153.66.121 0:0:0:0:0:ffff:cb99:4279
203.153.66.122 0:0:0:0:0:ffff:cb99:427a
203.153.66.123 0:0:0:0:0:ffff:cb99:427b
203.153.66.124 0:0:0:0:0:ffff:cb99:427c
203.153.66.125 0:0:0:0:0:ffff:cb99:427d
203.153.66.126 0:0:0:0:0:ffff:cb99:427e
203.153.66.127 0:0:0:0:0:ffff:cb99:427f
203.153.66.128 0:0:0:0:0:ffff:cb99:4280
203.153.66.129 0:0:0:0:0:ffff:cb99:4281
203.153.66.130 0:0:0:0:0:ffff:cb99:4282
203.153.66.131 0:0:0:0:0:ffff:cb99:4283
203.153.66.132 0:0:0:0:0:ffff:cb99:4284
203.153.66.133 0:0:0:0:0:ffff:cb99:4285
203.153.66.134 0:0:0:0:0:ffff:cb99:4286
203.153.66.135 0:0:0:0:0:ffff:cb99:4287
203.153.66.136 0:0:0:0:0:ffff:cb99:4288
203.153.66.137 0:0:0:0:0:ffff:cb99:4289
203.153.66.138 0:0:0:0:0:ffff:cb99:428a
203.153.66.139 0:0:0:0:0:ffff:cb99:428b
203.153.66.140 0:0:0:0:0:ffff:cb99:428c
203.153.66.141 0:0:0:0:0:ffff:cb99:428d
203.153.66.142 0:0:0:0:0:ffff:cb99:428e
203.153.66.143 0:0:0:0:0:ffff:cb99:428f
203.153.66.144 0:0:0:0:0:ffff:cb99:4290
203.153.66.145 0:0:0:0:0:ffff:cb99:4291
203.153.66.146 0:0:0:0:0:ffff:cb99:4292
203.153.66.147 0:0:0:0:0:ffff:cb99:4293
203.153.66.148 0:0:0:0:0:ffff:cb99:4294
203.153.66.149 0:0:0:0:0:ffff:cb99:4295
203.153.66.150 0:0:0:0:0:ffff:cb99:4296
203.153.66.151 0:0:0:0:0:ffff:cb99:4297
203.153.66.152 0:0:0:0:0:ffff:cb99:4298
203.153.66.153 0:0:0:0:0:ffff:cb99:4299
203.153.66.154 0:0:0:0:0:ffff:cb99:429a
203.153.66.155 0:0:0:0:0:ffff:cb99:429b
203.153.66.156 0:0:0:0:0:ffff:cb99:429c
203.153.66.157 0:0:0:0:0:ffff:cb99:429d
203.153.66.158 0:0:0:0:0:ffff:cb99:429e
203.153.66.159 0:0:0:0:0:ffff:cb99:429f
203.153.66.160 0:0:0:0:0:ffff:cb99:42a0
203.153.66.161 0:0:0:0:0:ffff:cb99:42a1
203.153.66.162 0:0:0:0:0:ffff:cb99:42a2
203.153.66.163 0:0:0:0:0:ffff:cb99:42a3
203.153.66.164 0:0:0:0:0:ffff:cb99:42a4
203.153.66.165 0:0:0:0:0:ffff:cb99:42a5
203.153.66.166 0:0:0:0:0:ffff:cb99:42a6
203.153.66.167 0:0:0:0:0:ffff:cb99:42a7
203.153.66.168 0:0:0:0:0:ffff:cb99:42a8
203.153.66.169 0:0:0:0:0:ffff:cb99:42a9
203.153.66.170 0:0:0:0:0:ffff:cb99:42aa
203.153.66.171 0:0:0:0:0:ffff:cb99:42ab
203.153.66.172 0:0:0:0:0:ffff:cb99:42ac
203.153.66.173 0:0:0:0:0:ffff:cb99:42ad
203.153.66.174 0:0:0:0:0:ffff:cb99:42ae
203.153.66.175 0:0:0:0:0:ffff:cb99:42af
203.153.66.176 0:0:0:0:0:ffff:cb99:42b0
203.153.66.177 0:0:0:0:0:ffff:cb99:42b1
203.153.66.178 0:0:0:0:0:ffff:cb99:42b2
203.153.66.179 0:0:0:0:0:ffff:cb99:42b3
203.153.66.180 0:0:0:0:0:ffff:cb99:42b4


203.153.66.181 0:0:0:0:0:ffff:cb99:42b5
203.153.66.182 0:0:0:0:0:ffff:cb99:42b6
203.153.66.183 0:0:0:0:0:ffff:cb99:42b7
203.153.66.184 0:0:0:0:0:ffff:cb99:42b8
203.153.66.185 0:0:0:0:0:ffff:cb99:42b9
203.153.66.186 0:0:0:0:0:ffff:cb99:42ba
203.153.66.187 0:0:0:0:0:ffff:cb99:42bb
203.153.66.188 0:0:0:0:0:ffff:cb99:42bc
203.153.66.189 0:0:0:0:0:ffff:cb99:42bd
203.153.66.190 0:0:0:0:0:ffff:cb99:42be
203.153.66.191 0:0:0:0:0:ffff:cb99:42bf
203.153.66.192 0:0:0:0:0:ffff:cb99:42c0
203.153.66.193 0:0:0:0:0:ffff:cb99:42c1
203.153.66.194 0:0:0:0:0:ffff:cb99:42c2
203.153.66.195 0:0:0:0:0:ffff:cb99:42c3
203.153.66.196 0:0:0:0:0:ffff:cb99:42c4
203.153.66.197 0:0:0:0:0:ffff:cb99:42c5
203.153.66.198 0:0:0:0:0:ffff:cb99:42c6
203.153.66.199 0:0:0:0:0:ffff:cb99:42c7
203.153.66.200 0:0:0:0:0:ffff:cb99:42c8
203.153.66.201 0:0:0:0:0:ffff:cb99:42c9
203.153.66.202 0:0:0:0:0:ffff:cb99:42ca
203.153.66.203 0:0:0:0:0:ffff:cb99:42cb
203.153.66.204 0:0:0:0:0:ffff:cb99:42cc
203.153.66.205 0:0:0:0:0:ffff:cb99:42cd
203.153.66.206 0:0:0:0:0:ffff:cb99:42ce
203.153.66.207 0:0:0:0:0:ffff:cb99:42cf
203.153.66.208 0:0:0:0:0:ffff:cb99:42d0
203.153.66.209 0:0:0:0:0:ffff:cb99:42d1
203.153.66.210 0:0:0:0:0:ffff:cb99:42d2
203.153.66.211 0:0:0:0:0:ffff:cb99:42d3
203.153.66.212 0:0:0:0:0:ffff:cb99:42d4
203.153.66.213 0:0:0:0:0:ffff:cb99:42d5
203.153.66.214 0:0:0:0:0:ffff:cb99:42d6
203.153.66.215 0:0:0:0:0:ffff:cb99:42d7
203.153.66.216 0:0:0:0:0:ffff:cb99:42d8
203.153.66.217 0:0:0:0:0:ffff:cb99:42d9
203.153.66.218 0:0:0:0:0:ffff:cb99:42da
203.153.66.219 0:0:0:0:0:ffff:cb99:42db
203.153.66.220 0:0:0:0:0:ffff:cb99:42dc
203.153.66.221 0:0:0:0:0:ffff:cb99:42dd
203.153.66.222 0:0:0:0:0:ffff:cb99:42de
203.153.66.223 0:0:0:0:0:ffff:cb99:42df
203.153.66.224 0:0:0:0:0:ffff:cb99:42e0
203.153.66.225 0:0:0:0:0:ffff:cb99:42e1
203.153.66.226 0:0:0:0:0:ffff:cb99:42e2
203.153.66.227 0:0:0:0:0:ffff:cb99:42e3
203.153.66.228 0:0:0:0:0:ffff:cb99:42e4
203.153.66.229 0:0:0:0:0:ffff:cb99:42e5
203.153.66.230 0:0:0:0:0:ffff:cb99:42e6
203.153.66.231 0:0:0:0:0:ffff:cb99:42e7
203.153.66.232 0:0:0:0:0:ffff:cb99:42e8
203.153.66.233 0:0:0:0:0:ffff:cb99:42e9
203.153.66.234 0:0:0:0:0:ffff:cb99:42ea
203.153.66.235 0:0:0:0:0:ffff:cb99:42eb
203.153.66.236 0:0:0:0:0:ffff:cb99:42ec
203.153.66.237 0:0:0:0:0:ffff:cb99:42ed
203.153.66.238 0:0:0:0:0:ffff:cb99:42ee
203.153.66.239 0:0:0:0:0:ffff:cb99:42ef
203.153.66.240 0:0:0:0:0:ffff:cb99:42f0
203.153.66.241 0:0:0:0:0:ffff:cb99:42f1
203.153.66.242 0:0:0:0:0:ffff:cb99:42f2
203.153.66.243 0:0:0:0:0:ffff:cb99:42f3
203.153.66.244 0:0:0:0:0:ffff:cb99:42f4
203.153.66.245 0:0:0:0:0:ffff:cb99:42f5
203.153.66.246 0:0:0:0:0:ffff:cb99:42f6
203.153.66.247 0:0:0:0:0:ffff:cb99:42f7
203.153.66.248 0:0:0:0:0:ffff:cb99:42f8
203.153.66.249 0:0:0:0:0:ffff:cb99:42f9
203.153.66.250 0:0:0:0:0:ffff:cb99:42fa
203.153.66.251 0:0:0:0:0:ffff:cb99:42fb
203.153.66.252 0:0:0:0:0:ffff:cb99:42fc
203.153.66.253 0:0:0:0:0:ffff:cb99:42fd
203.153.66.254 0:0:0:0:0:ffff:cb99:42fe
203.153.66.255 0:0:0:0:0:ffff:cb99:42ff


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.