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
151.131.66.1 0:0:0:0:0:ffff:9783:4201
151.131.66.2 0:0:0:0:0:ffff:9783:4202
151.131.66.3 0:0:0:0:0:ffff:9783:4203
151.131.66.4 0:0:0:0:0:ffff:9783:4204
151.131.66.5 0:0:0:0:0:ffff:9783:4205
151.131.66.6 0:0:0:0:0:ffff:9783:4206
151.131.66.7 0:0:0:0:0:ffff:9783:4207
151.131.66.8 0:0:0:0:0:ffff:9783:4208
151.131.66.9 0:0:0:0:0:ffff:9783:4209
151.131.66.10 0:0:0:0:0:ffff:9783:420a
151.131.66.11 0:0:0:0:0:ffff:9783:420b
151.131.66.12 0:0:0:0:0:ffff:9783:420c
151.131.66.13 0:0:0:0:0:ffff:9783:420d
151.131.66.14 0:0:0:0:0:ffff:9783:420e
151.131.66.15 0:0:0:0:0:ffff:9783:420f
151.131.66.16 0:0:0:0:0:ffff:9783:4210
151.131.66.17 0:0:0:0:0:ffff:9783:4211
151.131.66.18 0:0:0:0:0:ffff:9783:4212
151.131.66.19 0:0:0:0:0:ffff:9783:4213
151.131.66.20 0:0:0:0:0:ffff:9783:4214
151.131.66.21 0:0:0:0:0:ffff:9783:4215
151.131.66.22 0:0:0:0:0:ffff:9783:4216
151.131.66.23 0:0:0:0:0:ffff:9783:4217
151.131.66.24 0:0:0:0:0:ffff:9783:4218
151.131.66.25 0:0:0:0:0:ffff:9783:4219
151.131.66.26 0:0:0:0:0:ffff:9783:421a
151.131.66.27 0:0:0:0:0:ffff:9783:421b
151.131.66.28 0:0:0:0:0:ffff:9783:421c
151.131.66.29 0:0:0:0:0:ffff:9783:421d
151.131.66.30 0:0:0:0:0:ffff:9783:421e
151.131.66.31 0:0:0:0:0:ffff:9783:421f
151.131.66.32 0:0:0:0:0:ffff:9783:4220
151.131.66.33 0:0:0:0:0:ffff:9783:4221
151.131.66.34 0:0:0:0:0:ffff:9783:4222
151.131.66.35 0:0:0:0:0:ffff:9783:4223
151.131.66.36 0:0:0:0:0:ffff:9783:4224
151.131.66.37 0:0:0:0:0:ffff:9783:4225
151.131.66.38 0:0:0:0:0:ffff:9783:4226
151.131.66.39 0:0:0:0:0:ffff:9783:4227
151.131.66.40 0:0:0:0:0:ffff:9783:4228
151.131.66.41 0:0:0:0:0:ffff:9783:4229
151.131.66.42 0:0:0:0:0:ffff:9783:422a
151.131.66.43 0:0:0:0:0:ffff:9783:422b
151.131.66.44 0:0:0:0:0:ffff:9783:422c
151.131.66.45 0:0:0:0:0:ffff:9783:422d
151.131.66.46 0:0:0:0:0:ffff:9783:422e
151.131.66.47 0:0:0:0:0:ffff:9783:422f
151.131.66.48 0:0:0:0:0:ffff:9783:4230
151.131.66.49 0:0:0:0:0:ffff:9783:4231
151.131.66.50 0:0:0:0:0:ffff:9783:4232
151.131.66.51 0:0:0:0:0:ffff:9783:4233
151.131.66.52 0:0:0:0:0:ffff:9783:4234
151.131.66.53 0:0:0:0:0:ffff:9783:4235
151.131.66.54 0:0:0:0:0:ffff:9783:4236
151.131.66.55 0:0:0:0:0:ffff:9783:4237
151.131.66.56 0:0:0:0:0:ffff:9783:4238
151.131.66.57 0:0:0:0:0:ffff:9783:4239
151.131.66.58 0:0:0:0:0:ffff:9783:423a
151.131.66.59 0:0:0:0:0:ffff:9783:423b
151.131.66.60 0:0:0:0:0:ffff:9783:423c


151.131.66.61 0:0:0:0:0:ffff:9783:423d
151.131.66.62 0:0:0:0:0:ffff:9783:423e
151.131.66.63 0:0:0:0:0:ffff:9783:423f
151.131.66.64 0:0:0:0:0:ffff:9783:4240
151.131.66.65 0:0:0:0:0:ffff:9783:4241
151.131.66.66 0:0:0:0:0:ffff:9783:4242
151.131.66.67 0:0:0:0:0:ffff:9783:4243
151.131.66.68 0:0:0:0:0:ffff:9783:4244
151.131.66.69 0:0:0:0:0:ffff:9783:4245
151.131.66.70 0:0:0:0:0:ffff:9783:4246
151.131.66.71 0:0:0:0:0:ffff:9783:4247
151.131.66.72 0:0:0:0:0:ffff:9783:4248
151.131.66.73 0:0:0:0:0:ffff:9783:4249
151.131.66.74 0:0:0:0:0:ffff:9783:424a
151.131.66.75 0:0:0:0:0:ffff:9783:424b
151.131.66.76 0:0:0:0:0:ffff:9783:424c
151.131.66.77 0:0:0:0:0:ffff:9783:424d
151.131.66.78 0:0:0:0:0:ffff:9783:424e
151.131.66.79 0:0:0:0:0:ffff:9783:424f
151.131.66.80 0:0:0:0:0:ffff:9783:4250
151.131.66.81 0:0:0:0:0:ffff:9783:4251
151.131.66.82 0:0:0:0:0:ffff:9783:4252
151.131.66.83 0:0:0:0:0:ffff:9783:4253
151.131.66.84 0:0:0:0:0:ffff:9783:4254
151.131.66.85 0:0:0:0:0:ffff:9783:4255
151.131.66.86 0:0:0:0:0:ffff:9783:4256
151.131.66.87 0:0:0:0:0:ffff:9783:4257
151.131.66.88 0:0:0:0:0:ffff:9783:4258
151.131.66.89 0:0:0:0:0:ffff:9783:4259
151.131.66.90 0:0:0:0:0:ffff:9783:425a
151.131.66.91 0:0:0:0:0:ffff:9783:425b
151.131.66.92 0:0:0:0:0:ffff:9783:425c
151.131.66.93 0:0:0:0:0:ffff:9783:425d
151.131.66.94 0:0:0:0:0:ffff:9783:425e
151.131.66.95 0:0:0:0:0:ffff:9783:425f
151.131.66.96 0:0:0:0:0:ffff:9783:4260
151.131.66.97 0:0:0:0:0:ffff:9783:4261
151.131.66.98 0:0:0:0:0:ffff:9783:4262
151.131.66.99 0:0:0:0:0:ffff:9783:4263
151.131.66.100 0:0:0:0:0:ffff:9783:4264
151.131.66.101 0:0:0:0:0:ffff:9783:4265
151.131.66.102 0:0:0:0:0:ffff:9783:4266
151.131.66.103 0:0:0:0:0:ffff:9783:4267
151.131.66.104 0:0:0:0:0:ffff:9783:4268
151.131.66.105 0:0:0:0:0:ffff:9783:4269
151.131.66.106 0:0:0:0:0:ffff:9783:426a
151.131.66.107 0:0:0:0:0:ffff:9783:426b
151.131.66.108 0:0:0:0:0:ffff:9783:426c
151.131.66.109 0:0:0:0:0:ffff:9783:426d
151.131.66.110 0:0:0:0:0:ffff:9783:426e
151.131.66.111 0:0:0:0:0:ffff:9783:426f
151.131.66.112 0:0:0:0:0:ffff:9783:4270
151.131.66.113 0:0:0:0:0:ffff:9783:4271
151.131.66.114 0:0:0:0:0:ffff:9783:4272
151.131.66.115 0:0:0:0:0:ffff:9783:4273
151.131.66.116 0:0:0:0:0:ffff:9783:4274
151.131.66.117 0:0:0:0:0:ffff:9783:4275
151.131.66.118 0:0:0:0:0:ffff:9783:4276
151.131.66.119 0:0:0:0:0:ffff:9783:4277
151.131.66.120 0:0:0:0:0:ffff:9783:4278


151.131.66.121 0:0:0:0:0:ffff:9783:4279
151.131.66.122 0:0:0:0:0:ffff:9783:427a
151.131.66.123 0:0:0:0:0:ffff:9783:427b
151.131.66.124 0:0:0:0:0:ffff:9783:427c
151.131.66.125 0:0:0:0:0:ffff:9783:427d
151.131.66.126 0:0:0:0:0:ffff:9783:427e
151.131.66.127 0:0:0:0:0:ffff:9783:427f
151.131.66.128 0:0:0:0:0:ffff:9783:4280
151.131.66.129 0:0:0:0:0:ffff:9783:4281
151.131.66.130 0:0:0:0:0:ffff:9783:4282
151.131.66.131 0:0:0:0:0:ffff:9783:4283
151.131.66.132 0:0:0:0:0:ffff:9783:4284
151.131.66.133 0:0:0:0:0:ffff:9783:4285
151.131.66.134 0:0:0:0:0:ffff:9783:4286
151.131.66.135 0:0:0:0:0:ffff:9783:4287
151.131.66.136 0:0:0:0:0:ffff:9783:4288
151.131.66.137 0:0:0:0:0:ffff:9783:4289
151.131.66.138 0:0:0:0:0:ffff:9783:428a
151.131.66.139 0:0:0:0:0:ffff:9783:428b
151.131.66.140 0:0:0:0:0:ffff:9783:428c
151.131.66.141 0:0:0:0:0:ffff:9783:428d
151.131.66.142 0:0:0:0:0:ffff:9783:428e
151.131.66.143 0:0:0:0:0:ffff:9783:428f
151.131.66.144 0:0:0:0:0:ffff:9783:4290
151.131.66.145 0:0:0:0:0:ffff:9783:4291
151.131.66.146 0:0:0:0:0:ffff:9783:4292
151.131.66.147 0:0:0:0:0:ffff:9783:4293
151.131.66.148 0:0:0:0:0:ffff:9783:4294
151.131.66.149 0:0:0:0:0:ffff:9783:4295
151.131.66.150 0:0:0:0:0:ffff:9783:4296
151.131.66.151 0:0:0:0:0:ffff:9783:4297
151.131.66.152 0:0:0:0:0:ffff:9783:4298
151.131.66.153 0:0:0:0:0:ffff:9783:4299
151.131.66.154 0:0:0:0:0:ffff:9783:429a
151.131.66.155 0:0:0:0:0:ffff:9783:429b
151.131.66.156 0:0:0:0:0:ffff:9783:429c
151.131.66.157 0:0:0:0:0:ffff:9783:429d
151.131.66.158 0:0:0:0:0:ffff:9783:429e
151.131.66.159 0:0:0:0:0:ffff:9783:429f
151.131.66.160 0:0:0:0:0:ffff:9783:42a0
151.131.66.161 0:0:0:0:0:ffff:9783:42a1
151.131.66.162 0:0:0:0:0:ffff:9783:42a2
151.131.66.163 0:0:0:0:0:ffff:9783:42a3
151.131.66.164 0:0:0:0:0:ffff:9783:42a4
151.131.66.165 0:0:0:0:0:ffff:9783:42a5
151.131.66.166 0:0:0:0:0:ffff:9783:42a6
151.131.66.167 0:0:0:0:0:ffff:9783:42a7
151.131.66.168 0:0:0:0:0:ffff:9783:42a8
151.131.66.169 0:0:0:0:0:ffff:9783:42a9
151.131.66.170 0:0:0:0:0:ffff:9783:42aa
151.131.66.171 0:0:0:0:0:ffff:9783:42ab
151.131.66.172 0:0:0:0:0:ffff:9783:42ac
151.131.66.173 0:0:0:0:0:ffff:9783:42ad
151.131.66.174 0:0:0:0:0:ffff:9783:42ae
151.131.66.175 0:0:0:0:0:ffff:9783:42af
151.131.66.176 0:0:0:0:0:ffff:9783:42b0
151.131.66.177 0:0:0:0:0:ffff:9783:42b1
151.131.66.178 0:0:0:0:0:ffff:9783:42b2
151.131.66.179 0:0:0:0:0:ffff:9783:42b3
151.131.66.180 0:0:0:0:0:ffff:9783:42b4


151.131.66.181 0:0:0:0:0:ffff:9783:42b5
151.131.66.182 0:0:0:0:0:ffff:9783:42b6
151.131.66.183 0:0:0:0:0:ffff:9783:42b7
151.131.66.184 0:0:0:0:0:ffff:9783:42b8
151.131.66.185 0:0:0:0:0:ffff:9783:42b9
151.131.66.186 0:0:0:0:0:ffff:9783:42ba
151.131.66.187 0:0:0:0:0:ffff:9783:42bb
151.131.66.188 0:0:0:0:0:ffff:9783:42bc
151.131.66.189 0:0:0:0:0:ffff:9783:42bd
151.131.66.190 0:0:0:0:0:ffff:9783:42be
151.131.66.191 0:0:0:0:0:ffff:9783:42bf
151.131.66.192 0:0:0:0:0:ffff:9783:42c0
151.131.66.193 0:0:0:0:0:ffff:9783:42c1
151.131.66.194 0:0:0:0:0:ffff:9783:42c2
151.131.66.195 0:0:0:0:0:ffff:9783:42c3
151.131.66.196 0:0:0:0:0:ffff:9783:42c4
151.131.66.197 0:0:0:0:0:ffff:9783:42c5
151.131.66.198 0:0:0:0:0:ffff:9783:42c6
151.131.66.199 0:0:0:0:0:ffff:9783:42c7
151.131.66.200 0:0:0:0:0:ffff:9783:42c8
151.131.66.201 0:0:0:0:0:ffff:9783:42c9
151.131.66.202 0:0:0:0:0:ffff:9783:42ca
151.131.66.203 0:0:0:0:0:ffff:9783:42cb
151.131.66.204 0:0:0:0:0:ffff:9783:42cc
151.131.66.205 0:0:0:0:0:ffff:9783:42cd
151.131.66.206 0:0:0:0:0:ffff:9783:42ce
151.131.66.207 0:0:0:0:0:ffff:9783:42cf
151.131.66.208 0:0:0:0:0:ffff:9783:42d0
151.131.66.209 0:0:0:0:0:ffff:9783:42d1
151.131.66.210 0:0:0:0:0:ffff:9783:42d2
151.131.66.211 0:0:0:0:0:ffff:9783:42d3
151.131.66.212 0:0:0:0:0:ffff:9783:42d4
151.131.66.213 0:0:0:0:0:ffff:9783:42d5
151.131.66.214 0:0:0:0:0:ffff:9783:42d6
151.131.66.215 0:0:0:0:0:ffff:9783:42d7
151.131.66.216 0:0:0:0:0:ffff:9783:42d8
151.131.66.217 0:0:0:0:0:ffff:9783:42d9
151.131.66.218 0:0:0:0:0:ffff:9783:42da
151.131.66.219 0:0:0:0:0:ffff:9783:42db
151.131.66.220 0:0:0:0:0:ffff:9783:42dc
151.131.66.221 0:0:0:0:0:ffff:9783:42dd
151.131.66.222 0:0:0:0:0:ffff:9783:42de
151.131.66.223 0:0:0:0:0:ffff:9783:42df
151.131.66.224 0:0:0:0:0:ffff:9783:42e0
151.131.66.225 0:0:0:0:0:ffff:9783:42e1
151.131.66.226 0:0:0:0:0:ffff:9783:42e2
151.131.66.227 0:0:0:0:0:ffff:9783:42e3
151.131.66.228 0:0:0:0:0:ffff:9783:42e4
151.131.66.229 0:0:0:0:0:ffff:9783:42e5
151.131.66.230 0:0:0:0:0:ffff:9783:42e6
151.131.66.231 0:0:0:0:0:ffff:9783:42e7
151.131.66.232 0:0:0:0:0:ffff:9783:42e8
151.131.66.233 0:0:0:0:0:ffff:9783:42e9
151.131.66.234 0:0:0:0:0:ffff:9783:42ea
151.131.66.235 0:0:0:0:0:ffff:9783:42eb
151.131.66.236 0:0:0:0:0:ffff:9783:42ec
151.131.66.237 0:0:0:0:0:ffff:9783:42ed
151.131.66.238 0:0:0:0:0:ffff:9783:42ee
151.131.66.239 0:0:0:0:0:ffff:9783:42ef
151.131.66.240 0:0:0:0:0:ffff:9783:42f0
151.131.66.241 0:0:0:0:0:ffff:9783:42f1
151.131.66.242 0:0:0:0:0:ffff:9783:42f2
151.131.66.243 0:0:0:0:0:ffff:9783:42f3
151.131.66.244 0:0:0:0:0:ffff:9783:42f4
151.131.66.245 0:0:0:0:0:ffff:9783:42f5
151.131.66.246 0:0:0:0:0:ffff:9783:42f6
151.131.66.247 0:0:0:0:0:ffff:9783:42f7
151.131.66.248 0:0:0:0:0:ffff:9783:42f8
151.131.66.249 0:0:0:0:0:ffff:9783:42f9
151.131.66.250 0:0:0:0:0:ffff:9783:42fa
151.131.66.251 0:0:0:0:0:ffff:9783:42fb
151.131.66.252 0:0:0:0:0:ffff:9783:42fc
151.131.66.253 0:0:0:0:0:ffff:9783:42fd
151.131.66.254 0:0:0:0:0:ffff:9783:42fe
151.131.66.255 0:0:0:0:0:ffff:9783:42ff


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.