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
38.18.100.1 0:0:0:0:0:ffff:2612:6401
38.18.100.2 0:0:0:0:0:ffff:2612:6402
38.18.100.3 0:0:0:0:0:ffff:2612:6403
38.18.100.4 0:0:0:0:0:ffff:2612:6404
38.18.100.5 0:0:0:0:0:ffff:2612:6405
38.18.100.6 0:0:0:0:0:ffff:2612:6406
38.18.100.7 0:0:0:0:0:ffff:2612:6407
38.18.100.8 0:0:0:0:0:ffff:2612:6408
38.18.100.9 0:0:0:0:0:ffff:2612:6409
38.18.100.10 0:0:0:0:0:ffff:2612:640a
38.18.100.11 0:0:0:0:0:ffff:2612:640b
38.18.100.12 0:0:0:0:0:ffff:2612:640c
38.18.100.13 0:0:0:0:0:ffff:2612:640d
38.18.100.14 0:0:0:0:0:ffff:2612:640e
38.18.100.15 0:0:0:0:0:ffff:2612:640f
38.18.100.16 0:0:0:0:0:ffff:2612:6410
38.18.100.17 0:0:0:0:0:ffff:2612:6411
38.18.100.18 0:0:0:0:0:ffff:2612:6412
38.18.100.19 0:0:0:0:0:ffff:2612:6413
38.18.100.20 0:0:0:0:0:ffff:2612:6414
38.18.100.21 0:0:0:0:0:ffff:2612:6415
38.18.100.22 0:0:0:0:0:ffff:2612:6416
38.18.100.23 0:0:0:0:0:ffff:2612:6417
38.18.100.24 0:0:0:0:0:ffff:2612:6418
38.18.100.25 0:0:0:0:0:ffff:2612:6419
38.18.100.26 0:0:0:0:0:ffff:2612:641a
38.18.100.27 0:0:0:0:0:ffff:2612:641b
38.18.100.28 0:0:0:0:0:ffff:2612:641c
38.18.100.29 0:0:0:0:0:ffff:2612:641d
38.18.100.30 0:0:0:0:0:ffff:2612:641e
38.18.100.31 0:0:0:0:0:ffff:2612:641f
38.18.100.32 0:0:0:0:0:ffff:2612:6420
38.18.100.33 0:0:0:0:0:ffff:2612:6421
38.18.100.34 0:0:0:0:0:ffff:2612:6422
38.18.100.35 0:0:0:0:0:ffff:2612:6423
38.18.100.36 0:0:0:0:0:ffff:2612:6424
38.18.100.37 0:0:0:0:0:ffff:2612:6425
38.18.100.38 0:0:0:0:0:ffff:2612:6426
38.18.100.39 0:0:0:0:0:ffff:2612:6427
38.18.100.40 0:0:0:0:0:ffff:2612:6428
38.18.100.41 0:0:0:0:0:ffff:2612:6429
38.18.100.42 0:0:0:0:0:ffff:2612:642a
38.18.100.43 0:0:0:0:0:ffff:2612:642b
38.18.100.44 0:0:0:0:0:ffff:2612:642c
38.18.100.45 0:0:0:0:0:ffff:2612:642d
38.18.100.46 0:0:0:0:0:ffff:2612:642e
38.18.100.47 0:0:0:0:0:ffff:2612:642f
38.18.100.48 0:0:0:0:0:ffff:2612:6430
38.18.100.49 0:0:0:0:0:ffff:2612:6431
38.18.100.50 0:0:0:0:0:ffff:2612:6432
38.18.100.51 0:0:0:0:0:ffff:2612:6433
38.18.100.52 0:0:0:0:0:ffff:2612:6434
38.18.100.53 0:0:0:0:0:ffff:2612:6435
38.18.100.54 0:0:0:0:0:ffff:2612:6436
38.18.100.55 0:0:0:0:0:ffff:2612:6437
38.18.100.56 0:0:0:0:0:ffff:2612:6438
38.18.100.57 0:0:0:0:0:ffff:2612:6439
38.18.100.58 0:0:0:0:0:ffff:2612:643a
38.18.100.59 0:0:0:0:0:ffff:2612:643b
38.18.100.60 0:0:0:0:0:ffff:2612:643c


38.18.100.61 0:0:0:0:0:ffff:2612:643d
38.18.100.62 0:0:0:0:0:ffff:2612:643e
38.18.100.63 0:0:0:0:0:ffff:2612:643f
38.18.100.64 0:0:0:0:0:ffff:2612:6440
38.18.100.65 0:0:0:0:0:ffff:2612:6441
38.18.100.66 0:0:0:0:0:ffff:2612:6442
38.18.100.67 0:0:0:0:0:ffff:2612:6443
38.18.100.68 0:0:0:0:0:ffff:2612:6444
38.18.100.69 0:0:0:0:0:ffff:2612:6445
38.18.100.70 0:0:0:0:0:ffff:2612:6446
38.18.100.71 0:0:0:0:0:ffff:2612:6447
38.18.100.72 0:0:0:0:0:ffff:2612:6448
38.18.100.73 0:0:0:0:0:ffff:2612:6449
38.18.100.74 0:0:0:0:0:ffff:2612:644a
38.18.100.75 0:0:0:0:0:ffff:2612:644b
38.18.100.76 0:0:0:0:0:ffff:2612:644c
38.18.100.77 0:0:0:0:0:ffff:2612:644d
38.18.100.78 0:0:0:0:0:ffff:2612:644e
38.18.100.79 0:0:0:0:0:ffff:2612:644f
38.18.100.80 0:0:0:0:0:ffff:2612:6450
38.18.100.81 0:0:0:0:0:ffff:2612:6451
38.18.100.82 0:0:0:0:0:ffff:2612:6452
38.18.100.83 0:0:0:0:0:ffff:2612:6453
38.18.100.84 0:0:0:0:0:ffff:2612:6454
38.18.100.85 0:0:0:0:0:ffff:2612:6455
38.18.100.86 0:0:0:0:0:ffff:2612:6456
38.18.100.87 0:0:0:0:0:ffff:2612:6457
38.18.100.88 0:0:0:0:0:ffff:2612:6458
38.18.100.89 0:0:0:0:0:ffff:2612:6459
38.18.100.90 0:0:0:0:0:ffff:2612:645a
38.18.100.91 0:0:0:0:0:ffff:2612:645b
38.18.100.92 0:0:0:0:0:ffff:2612:645c
38.18.100.93 0:0:0:0:0:ffff:2612:645d
38.18.100.94 0:0:0:0:0:ffff:2612:645e
38.18.100.95 0:0:0:0:0:ffff:2612:645f
38.18.100.96 0:0:0:0:0:ffff:2612:6460
38.18.100.97 0:0:0:0:0:ffff:2612:6461
38.18.100.98 0:0:0:0:0:ffff:2612:6462
38.18.100.99 0:0:0:0:0:ffff:2612:6463
38.18.100.100 0:0:0:0:0:ffff:2612:6464
38.18.100.101 0:0:0:0:0:ffff:2612:6465
38.18.100.102 0:0:0:0:0:ffff:2612:6466
38.18.100.103 0:0:0:0:0:ffff:2612:6467
38.18.100.104 0:0:0:0:0:ffff:2612:6468
38.18.100.105 0:0:0:0:0:ffff:2612:6469
38.18.100.106 0:0:0:0:0:ffff:2612:646a
38.18.100.107 0:0:0:0:0:ffff:2612:646b
38.18.100.108 0:0:0:0:0:ffff:2612:646c
38.18.100.109 0:0:0:0:0:ffff:2612:646d
38.18.100.110 0:0:0:0:0:ffff:2612:646e
38.18.100.111 0:0:0:0:0:ffff:2612:646f
38.18.100.112 0:0:0:0:0:ffff:2612:6470
38.18.100.113 0:0:0:0:0:ffff:2612:6471
38.18.100.114 0:0:0:0:0:ffff:2612:6472
38.18.100.115 0:0:0:0:0:ffff:2612:6473
38.18.100.116 0:0:0:0:0:ffff:2612:6474
38.18.100.117 0:0:0:0:0:ffff:2612:6475
38.18.100.118 0:0:0:0:0:ffff:2612:6476
38.18.100.119 0:0:0:0:0:ffff:2612:6477
38.18.100.120 0:0:0:0:0:ffff:2612:6478


38.18.100.121 0:0:0:0:0:ffff:2612:6479
38.18.100.122 0:0:0:0:0:ffff:2612:647a
38.18.100.123 0:0:0:0:0:ffff:2612:647b
38.18.100.124 0:0:0:0:0:ffff:2612:647c
38.18.100.125 0:0:0:0:0:ffff:2612:647d
38.18.100.126 0:0:0:0:0:ffff:2612:647e
38.18.100.127 0:0:0:0:0:ffff:2612:647f
38.18.100.128 0:0:0:0:0:ffff:2612:6480
38.18.100.129 0:0:0:0:0:ffff:2612:6481
38.18.100.130 0:0:0:0:0:ffff:2612:6482
38.18.100.131 0:0:0:0:0:ffff:2612:6483
38.18.100.132 0:0:0:0:0:ffff:2612:6484
38.18.100.133 0:0:0:0:0:ffff:2612:6485
38.18.100.134 0:0:0:0:0:ffff:2612:6486
38.18.100.135 0:0:0:0:0:ffff:2612:6487
38.18.100.136 0:0:0:0:0:ffff:2612:6488
38.18.100.137 0:0:0:0:0:ffff:2612:6489
38.18.100.138 0:0:0:0:0:ffff:2612:648a
38.18.100.139 0:0:0:0:0:ffff:2612:648b
38.18.100.140 0:0:0:0:0:ffff:2612:648c
38.18.100.141 0:0:0:0:0:ffff:2612:648d
38.18.100.142 0:0:0:0:0:ffff:2612:648e
38.18.100.143 0:0:0:0:0:ffff:2612:648f
38.18.100.144 0:0:0:0:0:ffff:2612:6490
38.18.100.145 0:0:0:0:0:ffff:2612:6491
38.18.100.146 0:0:0:0:0:ffff:2612:6492
38.18.100.147 0:0:0:0:0:ffff:2612:6493
38.18.100.148 0:0:0:0:0:ffff:2612:6494
38.18.100.149 0:0:0:0:0:ffff:2612:6495
38.18.100.150 0:0:0:0:0:ffff:2612:6496
38.18.100.151 0:0:0:0:0:ffff:2612:6497
38.18.100.152 0:0:0:0:0:ffff:2612:6498
38.18.100.153 0:0:0:0:0:ffff:2612:6499
38.18.100.154 0:0:0:0:0:ffff:2612:649a
38.18.100.155 0:0:0:0:0:ffff:2612:649b
38.18.100.156 0:0:0:0:0:ffff:2612:649c
38.18.100.157 0:0:0:0:0:ffff:2612:649d
38.18.100.158 0:0:0:0:0:ffff:2612:649e
38.18.100.159 0:0:0:0:0:ffff:2612:649f
38.18.100.160 0:0:0:0:0:ffff:2612:64a0
38.18.100.161 0:0:0:0:0:ffff:2612:64a1
38.18.100.162 0:0:0:0:0:ffff:2612:64a2
38.18.100.163 0:0:0:0:0:ffff:2612:64a3
38.18.100.164 0:0:0:0:0:ffff:2612:64a4
38.18.100.165 0:0:0:0:0:ffff:2612:64a5
38.18.100.166 0:0:0:0:0:ffff:2612:64a6
38.18.100.167 0:0:0:0:0:ffff:2612:64a7
38.18.100.168 0:0:0:0:0:ffff:2612:64a8
38.18.100.169 0:0:0:0:0:ffff:2612:64a9
38.18.100.170 0:0:0:0:0:ffff:2612:64aa
38.18.100.171 0:0:0:0:0:ffff:2612:64ab
38.18.100.172 0:0:0:0:0:ffff:2612:64ac
38.18.100.173 0:0:0:0:0:ffff:2612:64ad
38.18.100.174 0:0:0:0:0:ffff:2612:64ae
38.18.100.175 0:0:0:0:0:ffff:2612:64af
38.18.100.176 0:0:0:0:0:ffff:2612:64b0
38.18.100.177 0:0:0:0:0:ffff:2612:64b1
38.18.100.178 0:0:0:0:0:ffff:2612:64b2
38.18.100.179 0:0:0:0:0:ffff:2612:64b3
38.18.100.180 0:0:0:0:0:ffff:2612:64b4


38.18.100.181 0:0:0:0:0:ffff:2612:64b5
38.18.100.182 0:0:0:0:0:ffff:2612:64b6
38.18.100.183 0:0:0:0:0:ffff:2612:64b7
38.18.100.184 0:0:0:0:0:ffff:2612:64b8
38.18.100.185 0:0:0:0:0:ffff:2612:64b9
38.18.100.186 0:0:0:0:0:ffff:2612:64ba
38.18.100.187 0:0:0:0:0:ffff:2612:64bb
38.18.100.188 0:0:0:0:0:ffff:2612:64bc
38.18.100.189 0:0:0:0:0:ffff:2612:64bd
38.18.100.190 0:0:0:0:0:ffff:2612:64be
38.18.100.191 0:0:0:0:0:ffff:2612:64bf
38.18.100.192 0:0:0:0:0:ffff:2612:64c0
38.18.100.193 0:0:0:0:0:ffff:2612:64c1
38.18.100.194 0:0:0:0:0:ffff:2612:64c2
38.18.100.195 0:0:0:0:0:ffff:2612:64c3
38.18.100.196 0:0:0:0:0:ffff:2612:64c4
38.18.100.197 0:0:0:0:0:ffff:2612:64c5
38.18.100.198 0:0:0:0:0:ffff:2612:64c6
38.18.100.199 0:0:0:0:0:ffff:2612:64c7
38.18.100.200 0:0:0:0:0:ffff:2612:64c8
38.18.100.201 0:0:0:0:0:ffff:2612:64c9
38.18.100.202 0:0:0:0:0:ffff:2612:64ca
38.18.100.203 0:0:0:0:0:ffff:2612:64cb
38.18.100.204 0:0:0:0:0:ffff:2612:64cc
38.18.100.205 0:0:0:0:0:ffff:2612:64cd
38.18.100.206 0:0:0:0:0:ffff:2612:64ce
38.18.100.207 0:0:0:0:0:ffff:2612:64cf
38.18.100.208 0:0:0:0:0:ffff:2612:64d0
38.18.100.209 0:0:0:0:0:ffff:2612:64d1
38.18.100.210 0:0:0:0:0:ffff:2612:64d2
38.18.100.211 0:0:0:0:0:ffff:2612:64d3
38.18.100.212 0:0:0:0:0:ffff:2612:64d4
38.18.100.213 0:0:0:0:0:ffff:2612:64d5
38.18.100.214 0:0:0:0:0:ffff:2612:64d6
38.18.100.215 0:0:0:0:0:ffff:2612:64d7
38.18.100.216 0:0:0:0:0:ffff:2612:64d8
38.18.100.217 0:0:0:0:0:ffff:2612:64d9
38.18.100.218 0:0:0:0:0:ffff:2612:64da
38.18.100.219 0:0:0:0:0:ffff:2612:64db
38.18.100.220 0:0:0:0:0:ffff:2612:64dc
38.18.100.221 0:0:0:0:0:ffff:2612:64dd
38.18.100.222 0:0:0:0:0:ffff:2612:64de
38.18.100.223 0:0:0:0:0:ffff:2612:64df
38.18.100.224 0:0:0:0:0:ffff:2612:64e0
38.18.100.225 0:0:0:0:0:ffff:2612:64e1
38.18.100.226 0:0:0:0:0:ffff:2612:64e2
38.18.100.227 0:0:0:0:0:ffff:2612:64e3
38.18.100.228 0:0:0:0:0:ffff:2612:64e4
38.18.100.229 0:0:0:0:0:ffff:2612:64e5
38.18.100.230 0:0:0:0:0:ffff:2612:64e6
38.18.100.231 0:0:0:0:0:ffff:2612:64e7
38.18.100.232 0:0:0:0:0:ffff:2612:64e8
38.18.100.233 0:0:0:0:0:ffff:2612:64e9
38.18.100.234 0:0:0:0:0:ffff:2612:64ea
38.18.100.235 0:0:0:0:0:ffff:2612:64eb
38.18.100.236 0:0:0:0:0:ffff:2612:64ec
38.18.100.237 0:0:0:0:0:ffff:2612:64ed
38.18.100.238 0:0:0:0:0:ffff:2612:64ee
38.18.100.239 0:0:0:0:0:ffff:2612:64ef
38.18.100.240 0:0:0:0:0:ffff:2612:64f0
38.18.100.241 0:0:0:0:0:ffff:2612:64f1
38.18.100.242 0:0:0:0:0:ffff:2612:64f2
38.18.100.243 0:0:0:0:0:ffff:2612:64f3
38.18.100.244 0:0:0:0:0:ffff:2612:64f4
38.18.100.245 0:0:0:0:0:ffff:2612:64f5
38.18.100.246 0:0:0:0:0:ffff:2612:64f6
38.18.100.247 0:0:0:0:0:ffff:2612:64f7
38.18.100.248 0:0:0:0:0:ffff:2612:64f8
38.18.100.249 0:0:0:0:0:ffff:2612:64f9
38.18.100.250 0:0:0:0:0:ffff:2612:64fa
38.18.100.251 0:0:0:0:0:ffff:2612:64fb
38.18.100.252 0:0:0:0:0:ffff:2612:64fc
38.18.100.253 0:0:0:0:0:ffff:2612:64fd
38.18.100.254 0:0:0:0:0:ffff:2612:64fe
38.18.100.255 0:0:0:0:0:ffff:2612:64ff


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.