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
38.18.66.1 0:0:0:0:0:ffff:2612:4201
38.18.66.2 0:0:0:0:0:ffff:2612:4202
38.18.66.3 0:0:0:0:0:ffff:2612:4203
38.18.66.4 0:0:0:0:0:ffff:2612:4204
38.18.66.5 0:0:0:0:0:ffff:2612:4205
38.18.66.6 0:0:0:0:0:ffff:2612:4206
38.18.66.7 0:0:0:0:0:ffff:2612:4207
38.18.66.8 0:0:0:0:0:ffff:2612:4208
38.18.66.9 0:0:0:0:0:ffff:2612:4209
38.18.66.10 0:0:0:0:0:ffff:2612:420a
38.18.66.11 0:0:0:0:0:ffff:2612:420b
38.18.66.12 0:0:0:0:0:ffff:2612:420c
38.18.66.13 0:0:0:0:0:ffff:2612:420d
38.18.66.14 0:0:0:0:0:ffff:2612:420e
38.18.66.15 0:0:0:0:0:ffff:2612:420f
38.18.66.16 0:0:0:0:0:ffff:2612:4210
38.18.66.17 0:0:0:0:0:ffff:2612:4211
38.18.66.18 0:0:0:0:0:ffff:2612:4212
38.18.66.19 0:0:0:0:0:ffff:2612:4213
38.18.66.20 0:0:0:0:0:ffff:2612:4214
38.18.66.21 0:0:0:0:0:ffff:2612:4215
38.18.66.22 0:0:0:0:0:ffff:2612:4216
38.18.66.23 0:0:0:0:0:ffff:2612:4217
38.18.66.24 0:0:0:0:0:ffff:2612:4218
38.18.66.25 0:0:0:0:0:ffff:2612:4219
38.18.66.26 0:0:0:0:0:ffff:2612:421a
38.18.66.27 0:0:0:0:0:ffff:2612:421b
38.18.66.28 0:0:0:0:0:ffff:2612:421c
38.18.66.29 0:0:0:0:0:ffff:2612:421d
38.18.66.30 0:0:0:0:0:ffff:2612:421e
38.18.66.31 0:0:0:0:0:ffff:2612:421f
38.18.66.32 0:0:0:0:0:ffff:2612:4220
38.18.66.33 0:0:0:0:0:ffff:2612:4221
38.18.66.34 0:0:0:0:0:ffff:2612:4222
38.18.66.35 0:0:0:0:0:ffff:2612:4223
38.18.66.36 0:0:0:0:0:ffff:2612:4224
38.18.66.37 0:0:0:0:0:ffff:2612:4225
38.18.66.38 0:0:0:0:0:ffff:2612:4226
38.18.66.39 0:0:0:0:0:ffff:2612:4227
38.18.66.40 0:0:0:0:0:ffff:2612:4228
38.18.66.41 0:0:0:0:0:ffff:2612:4229
38.18.66.42 0:0:0:0:0:ffff:2612:422a
38.18.66.43 0:0:0:0:0:ffff:2612:422b
38.18.66.44 0:0:0:0:0:ffff:2612:422c
38.18.66.45 0:0:0:0:0:ffff:2612:422d
38.18.66.46 0:0:0:0:0:ffff:2612:422e
38.18.66.47 0:0:0:0:0:ffff:2612:422f
38.18.66.48 0:0:0:0:0:ffff:2612:4230
38.18.66.49 0:0:0:0:0:ffff:2612:4231
38.18.66.50 0:0:0:0:0:ffff:2612:4232
38.18.66.51 0:0:0:0:0:ffff:2612:4233
38.18.66.52 0:0:0:0:0:ffff:2612:4234
38.18.66.53 0:0:0:0:0:ffff:2612:4235
38.18.66.54 0:0:0:0:0:ffff:2612:4236
38.18.66.55 0:0:0:0:0:ffff:2612:4237
38.18.66.56 0:0:0:0:0:ffff:2612:4238
38.18.66.57 0:0:0:0:0:ffff:2612:4239
38.18.66.58 0:0:0:0:0:ffff:2612:423a
38.18.66.59 0:0:0:0:0:ffff:2612:423b
38.18.66.60 0:0:0:0:0:ffff:2612:423c


38.18.66.61 0:0:0:0:0:ffff:2612:423d
38.18.66.62 0:0:0:0:0:ffff:2612:423e
38.18.66.63 0:0:0:0:0:ffff:2612:423f
38.18.66.64 0:0:0:0:0:ffff:2612:4240
38.18.66.65 0:0:0:0:0:ffff:2612:4241
38.18.66.66 0:0:0:0:0:ffff:2612:4242
38.18.66.67 0:0:0:0:0:ffff:2612:4243
38.18.66.68 0:0:0:0:0:ffff:2612:4244
38.18.66.69 0:0:0:0:0:ffff:2612:4245
38.18.66.70 0:0:0:0:0:ffff:2612:4246
38.18.66.71 0:0:0:0:0:ffff:2612:4247
38.18.66.72 0:0:0:0:0:ffff:2612:4248
38.18.66.73 0:0:0:0:0:ffff:2612:4249
38.18.66.74 0:0:0:0:0:ffff:2612:424a
38.18.66.75 0:0:0:0:0:ffff:2612:424b
38.18.66.76 0:0:0:0:0:ffff:2612:424c
38.18.66.77 0:0:0:0:0:ffff:2612:424d
38.18.66.78 0:0:0:0:0:ffff:2612:424e
38.18.66.79 0:0:0:0:0:ffff:2612:424f
38.18.66.80 0:0:0:0:0:ffff:2612:4250
38.18.66.81 0:0:0:0:0:ffff:2612:4251
38.18.66.82 0:0:0:0:0:ffff:2612:4252
38.18.66.83 0:0:0:0:0:ffff:2612:4253
38.18.66.84 0:0:0:0:0:ffff:2612:4254
38.18.66.85 0:0:0:0:0:ffff:2612:4255
38.18.66.86 0:0:0:0:0:ffff:2612:4256
38.18.66.87 0:0:0:0:0:ffff:2612:4257
38.18.66.88 0:0:0:0:0:ffff:2612:4258
38.18.66.89 0:0:0:0:0:ffff:2612:4259
38.18.66.90 0:0:0:0:0:ffff:2612:425a
38.18.66.91 0:0:0:0:0:ffff:2612:425b
38.18.66.92 0:0:0:0:0:ffff:2612:425c
38.18.66.93 0:0:0:0:0:ffff:2612:425d
38.18.66.94 0:0:0:0:0:ffff:2612:425e
38.18.66.95 0:0:0:0:0:ffff:2612:425f
38.18.66.96 0:0:0:0:0:ffff:2612:4260
38.18.66.97 0:0:0:0:0:ffff:2612:4261
38.18.66.98 0:0:0:0:0:ffff:2612:4262
38.18.66.99 0:0:0:0:0:ffff:2612:4263
38.18.66.100 0:0:0:0:0:ffff:2612:4264
38.18.66.101 0:0:0:0:0:ffff:2612:4265
38.18.66.102 0:0:0:0:0:ffff:2612:4266
38.18.66.103 0:0:0:0:0:ffff:2612:4267
38.18.66.104 0:0:0:0:0:ffff:2612:4268
38.18.66.105 0:0:0:0:0:ffff:2612:4269
38.18.66.106 0:0:0:0:0:ffff:2612:426a
38.18.66.107 0:0:0:0:0:ffff:2612:426b
38.18.66.108 0:0:0:0:0:ffff:2612:426c
38.18.66.109 0:0:0:0:0:ffff:2612:426d
38.18.66.110 0:0:0:0:0:ffff:2612:426e
38.18.66.111 0:0:0:0:0:ffff:2612:426f
38.18.66.112 0:0:0:0:0:ffff:2612:4270
38.18.66.113 0:0:0:0:0:ffff:2612:4271
38.18.66.114 0:0:0:0:0:ffff:2612:4272
38.18.66.115 0:0:0:0:0:ffff:2612:4273
38.18.66.116 0:0:0:0:0:ffff:2612:4274
38.18.66.117 0:0:0:0:0:ffff:2612:4275
38.18.66.118 0:0:0:0:0:ffff:2612:4276
38.18.66.119 0:0:0:0:0:ffff:2612:4277
38.18.66.120 0:0:0:0:0:ffff:2612:4278


38.18.66.121 0:0:0:0:0:ffff:2612:4279
38.18.66.122 0:0:0:0:0:ffff:2612:427a
38.18.66.123 0:0:0:0:0:ffff:2612:427b
38.18.66.124 0:0:0:0:0:ffff:2612:427c
38.18.66.125 0:0:0:0:0:ffff:2612:427d
38.18.66.126 0:0:0:0:0:ffff:2612:427e
38.18.66.127 0:0:0:0:0:ffff:2612:427f
38.18.66.128 0:0:0:0:0:ffff:2612:4280
38.18.66.129 0:0:0:0:0:ffff:2612:4281
38.18.66.130 0:0:0:0:0:ffff:2612:4282
38.18.66.131 0:0:0:0:0:ffff:2612:4283
38.18.66.132 0:0:0:0:0:ffff:2612:4284
38.18.66.133 0:0:0:0:0:ffff:2612:4285
38.18.66.134 0:0:0:0:0:ffff:2612:4286
38.18.66.135 0:0:0:0:0:ffff:2612:4287
38.18.66.136 0:0:0:0:0:ffff:2612:4288
38.18.66.137 0:0:0:0:0:ffff:2612:4289
38.18.66.138 0:0:0:0:0:ffff:2612:428a
38.18.66.139 0:0:0:0:0:ffff:2612:428b
38.18.66.140 0:0:0:0:0:ffff:2612:428c
38.18.66.141 0:0:0:0:0:ffff:2612:428d
38.18.66.142 0:0:0:0:0:ffff:2612:428e
38.18.66.143 0:0:0:0:0:ffff:2612:428f
38.18.66.144 0:0:0:0:0:ffff:2612:4290
38.18.66.145 0:0:0:0:0:ffff:2612:4291
38.18.66.146 0:0:0:0:0:ffff:2612:4292
38.18.66.147 0:0:0:0:0:ffff:2612:4293
38.18.66.148 0:0:0:0:0:ffff:2612:4294
38.18.66.149 0:0:0:0:0:ffff:2612:4295
38.18.66.150 0:0:0:0:0:ffff:2612:4296
38.18.66.151 0:0:0:0:0:ffff:2612:4297
38.18.66.152 0:0:0:0:0:ffff:2612:4298
38.18.66.153 0:0:0:0:0:ffff:2612:4299
38.18.66.154 0:0:0:0:0:ffff:2612:429a
38.18.66.155 0:0:0:0:0:ffff:2612:429b
38.18.66.156 0:0:0:0:0:ffff:2612:429c
38.18.66.157 0:0:0:0:0:ffff:2612:429d
38.18.66.158 0:0:0:0:0:ffff:2612:429e
38.18.66.159 0:0:0:0:0:ffff:2612:429f
38.18.66.160 0:0:0:0:0:ffff:2612:42a0
38.18.66.161 0:0:0:0:0:ffff:2612:42a1
38.18.66.162 0:0:0:0:0:ffff:2612:42a2
38.18.66.163 0:0:0:0:0:ffff:2612:42a3
38.18.66.164 0:0:0:0:0:ffff:2612:42a4
38.18.66.165 0:0:0:0:0:ffff:2612:42a5
38.18.66.166 0:0:0:0:0:ffff:2612:42a6
38.18.66.167 0:0:0:0:0:ffff:2612:42a7
38.18.66.168 0:0:0:0:0:ffff:2612:42a8
38.18.66.169 0:0:0:0:0:ffff:2612:42a9
38.18.66.170 0:0:0:0:0:ffff:2612:42aa
38.18.66.171 0:0:0:0:0:ffff:2612:42ab
38.18.66.172 0:0:0:0:0:ffff:2612:42ac
38.18.66.173 0:0:0:0:0:ffff:2612:42ad
38.18.66.174 0:0:0:0:0:ffff:2612:42ae
38.18.66.175 0:0:0:0:0:ffff:2612:42af
38.18.66.176 0:0:0:0:0:ffff:2612:42b0
38.18.66.177 0:0:0:0:0:ffff:2612:42b1
38.18.66.178 0:0:0:0:0:ffff:2612:42b2
38.18.66.179 0:0:0:0:0:ffff:2612:42b3
38.18.66.180 0:0:0:0:0:ffff:2612:42b4


38.18.66.181 0:0:0:0:0:ffff:2612:42b5
38.18.66.182 0:0:0:0:0:ffff:2612:42b6
38.18.66.183 0:0:0:0:0:ffff:2612:42b7
38.18.66.184 0:0:0:0:0:ffff:2612:42b8
38.18.66.185 0:0:0:0:0:ffff:2612:42b9
38.18.66.186 0:0:0:0:0:ffff:2612:42ba
38.18.66.187 0:0:0:0:0:ffff:2612:42bb
38.18.66.188 0:0:0:0:0:ffff:2612:42bc
38.18.66.189 0:0:0:0:0:ffff:2612:42bd
38.18.66.190 0:0:0:0:0:ffff:2612:42be
38.18.66.191 0:0:0:0:0:ffff:2612:42bf
38.18.66.192 0:0:0:0:0:ffff:2612:42c0
38.18.66.193 0:0:0:0:0:ffff:2612:42c1
38.18.66.194 0:0:0:0:0:ffff:2612:42c2
38.18.66.195 0:0:0:0:0:ffff:2612:42c3
38.18.66.196 0:0:0:0:0:ffff:2612:42c4
38.18.66.197 0:0:0:0:0:ffff:2612:42c5
38.18.66.198 0:0:0:0:0:ffff:2612:42c6
38.18.66.199 0:0:0:0:0:ffff:2612:42c7
38.18.66.200 0:0:0:0:0:ffff:2612:42c8
38.18.66.201 0:0:0:0:0:ffff:2612:42c9
38.18.66.202 0:0:0:0:0:ffff:2612:42ca
38.18.66.203 0:0:0:0:0:ffff:2612:42cb
38.18.66.204 0:0:0:0:0:ffff:2612:42cc
38.18.66.205 0:0:0:0:0:ffff:2612:42cd
38.18.66.206 0:0:0:0:0:ffff:2612:42ce
38.18.66.207 0:0:0:0:0:ffff:2612:42cf
38.18.66.208 0:0:0:0:0:ffff:2612:42d0
38.18.66.209 0:0:0:0:0:ffff:2612:42d1
38.18.66.210 0:0:0:0:0:ffff:2612:42d2
38.18.66.211 0:0:0:0:0:ffff:2612:42d3
38.18.66.212 0:0:0:0:0:ffff:2612:42d4
38.18.66.213 0:0:0:0:0:ffff:2612:42d5
38.18.66.214 0:0:0:0:0:ffff:2612:42d6
38.18.66.215 0:0:0:0:0:ffff:2612:42d7
38.18.66.216 0:0:0:0:0:ffff:2612:42d8
38.18.66.217 0:0:0:0:0:ffff:2612:42d9
38.18.66.218 0:0:0:0:0:ffff:2612:42da
38.18.66.219 0:0:0:0:0:ffff:2612:42db
38.18.66.220 0:0:0:0:0:ffff:2612:42dc
38.18.66.221 0:0:0:0:0:ffff:2612:42dd
38.18.66.222 0:0:0:0:0:ffff:2612:42de
38.18.66.223 0:0:0:0:0:ffff:2612:42df
38.18.66.224 0:0:0:0:0:ffff:2612:42e0
38.18.66.225 0:0:0:0:0:ffff:2612:42e1
38.18.66.226 0:0:0:0:0:ffff:2612:42e2
38.18.66.227 0:0:0:0:0:ffff:2612:42e3
38.18.66.228 0:0:0:0:0:ffff:2612:42e4
38.18.66.229 0:0:0:0:0:ffff:2612:42e5
38.18.66.230 0:0:0:0:0:ffff:2612:42e6
38.18.66.231 0:0:0:0:0:ffff:2612:42e7
38.18.66.232 0:0:0:0:0:ffff:2612:42e8
38.18.66.233 0:0:0:0:0:ffff:2612:42e9
38.18.66.234 0:0:0:0:0:ffff:2612:42ea
38.18.66.235 0:0:0:0:0:ffff:2612:42eb
38.18.66.236 0:0:0:0:0:ffff:2612:42ec
38.18.66.237 0:0:0:0:0:ffff:2612:42ed
38.18.66.238 0:0:0:0:0:ffff:2612:42ee
38.18.66.239 0:0:0:0:0:ffff:2612:42ef
38.18.66.240 0:0:0:0:0:ffff:2612:42f0
38.18.66.241 0:0:0:0:0:ffff:2612:42f1
38.18.66.242 0:0:0:0:0:ffff:2612:42f2
38.18.66.243 0:0:0:0:0:ffff:2612:42f3
38.18.66.244 0:0:0:0:0:ffff:2612:42f4
38.18.66.245 0:0:0:0:0:ffff:2612:42f5
38.18.66.246 0:0:0:0:0:ffff:2612:42f6
38.18.66.247 0:0:0:0:0:ffff:2612:42f7
38.18.66.248 0:0:0:0:0:ffff:2612:42f8
38.18.66.249 0:0:0:0:0:ffff:2612:42f9
38.18.66.250 0:0:0:0:0:ffff:2612:42fa
38.18.66.251 0:0:0:0:0:ffff:2612:42fb
38.18.66.252 0:0:0:0:0:ffff:2612:42fc
38.18.66.253 0:0:0:0:0:ffff:2612:42fd
38.18.66.254 0:0:0:0:0:ffff:2612:42fe
38.18.66.255 0:0:0:0:0:ffff:2612:42ff


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.