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
151.45.100.1 0:0:0:0:0:ffff:972d:6401
151.45.100.2 0:0:0:0:0:ffff:972d:6402
151.45.100.3 0:0:0:0:0:ffff:972d:6403
151.45.100.4 0:0:0:0:0:ffff:972d:6404
151.45.100.5 0:0:0:0:0:ffff:972d:6405
151.45.100.6 0:0:0:0:0:ffff:972d:6406
151.45.100.7 0:0:0:0:0:ffff:972d:6407
151.45.100.8 0:0:0:0:0:ffff:972d:6408
151.45.100.9 0:0:0:0:0:ffff:972d:6409
151.45.100.10 0:0:0:0:0:ffff:972d:640a
151.45.100.11 0:0:0:0:0:ffff:972d:640b
151.45.100.12 0:0:0:0:0:ffff:972d:640c
151.45.100.13 0:0:0:0:0:ffff:972d:640d
151.45.100.14 0:0:0:0:0:ffff:972d:640e
151.45.100.15 0:0:0:0:0:ffff:972d:640f
151.45.100.16 0:0:0:0:0:ffff:972d:6410
151.45.100.17 0:0:0:0:0:ffff:972d:6411
151.45.100.18 0:0:0:0:0:ffff:972d:6412
151.45.100.19 0:0:0:0:0:ffff:972d:6413
151.45.100.20 0:0:0:0:0:ffff:972d:6414
151.45.100.21 0:0:0:0:0:ffff:972d:6415
151.45.100.22 0:0:0:0:0:ffff:972d:6416
151.45.100.23 0:0:0:0:0:ffff:972d:6417
151.45.100.24 0:0:0:0:0:ffff:972d:6418
151.45.100.25 0:0:0:0:0:ffff:972d:6419
151.45.100.26 0:0:0:0:0:ffff:972d:641a
151.45.100.27 0:0:0:0:0:ffff:972d:641b
151.45.100.28 0:0:0:0:0:ffff:972d:641c
151.45.100.29 0:0:0:0:0:ffff:972d:641d
151.45.100.30 0:0:0:0:0:ffff:972d:641e
151.45.100.31 0:0:0:0:0:ffff:972d:641f
151.45.100.32 0:0:0:0:0:ffff:972d:6420
151.45.100.33 0:0:0:0:0:ffff:972d:6421
151.45.100.34 0:0:0:0:0:ffff:972d:6422
151.45.100.35 0:0:0:0:0:ffff:972d:6423
151.45.100.36 0:0:0:0:0:ffff:972d:6424
151.45.100.37 0:0:0:0:0:ffff:972d:6425
151.45.100.38 0:0:0:0:0:ffff:972d:6426
151.45.100.39 0:0:0:0:0:ffff:972d:6427
151.45.100.40 0:0:0:0:0:ffff:972d:6428
151.45.100.41 0:0:0:0:0:ffff:972d:6429
151.45.100.42 0:0:0:0:0:ffff:972d:642a
151.45.100.43 0:0:0:0:0:ffff:972d:642b
151.45.100.44 0:0:0:0:0:ffff:972d:642c
151.45.100.45 0:0:0:0:0:ffff:972d:642d
151.45.100.46 0:0:0:0:0:ffff:972d:642e
151.45.100.47 0:0:0:0:0:ffff:972d:642f
151.45.100.48 0:0:0:0:0:ffff:972d:6430
151.45.100.49 0:0:0:0:0:ffff:972d:6431
151.45.100.50 0:0:0:0:0:ffff:972d:6432
151.45.100.51 0:0:0:0:0:ffff:972d:6433
151.45.100.52 0:0:0:0:0:ffff:972d:6434
151.45.100.53 0:0:0:0:0:ffff:972d:6435
151.45.100.54 0:0:0:0:0:ffff:972d:6436
151.45.100.55 0:0:0:0:0:ffff:972d:6437
151.45.100.56 0:0:0:0:0:ffff:972d:6438
151.45.100.57 0:0:0:0:0:ffff:972d:6439
151.45.100.58 0:0:0:0:0:ffff:972d:643a
151.45.100.59 0:0:0:0:0:ffff:972d:643b
151.45.100.60 0:0:0:0:0:ffff:972d:643c


151.45.100.61 0:0:0:0:0:ffff:972d:643d
151.45.100.62 0:0:0:0:0:ffff:972d:643e
151.45.100.63 0:0:0:0:0:ffff:972d:643f
151.45.100.64 0:0:0:0:0:ffff:972d:6440
151.45.100.65 0:0:0:0:0:ffff:972d:6441
151.45.100.66 0:0:0:0:0:ffff:972d:6442
151.45.100.67 0:0:0:0:0:ffff:972d:6443
151.45.100.68 0:0:0:0:0:ffff:972d:6444
151.45.100.69 0:0:0:0:0:ffff:972d:6445
151.45.100.70 0:0:0:0:0:ffff:972d:6446
151.45.100.71 0:0:0:0:0:ffff:972d:6447
151.45.100.72 0:0:0:0:0:ffff:972d:6448
151.45.100.73 0:0:0:0:0:ffff:972d:6449
151.45.100.74 0:0:0:0:0:ffff:972d:644a
151.45.100.75 0:0:0:0:0:ffff:972d:644b
151.45.100.76 0:0:0:0:0:ffff:972d:644c
151.45.100.77 0:0:0:0:0:ffff:972d:644d
151.45.100.78 0:0:0:0:0:ffff:972d:644e
151.45.100.79 0:0:0:0:0:ffff:972d:644f
151.45.100.80 0:0:0:0:0:ffff:972d:6450
151.45.100.81 0:0:0:0:0:ffff:972d:6451
151.45.100.82 0:0:0:0:0:ffff:972d:6452
151.45.100.83 0:0:0:0:0:ffff:972d:6453
151.45.100.84 0:0:0:0:0:ffff:972d:6454
151.45.100.85 0:0:0:0:0:ffff:972d:6455
151.45.100.86 0:0:0:0:0:ffff:972d:6456
151.45.100.87 0:0:0:0:0:ffff:972d:6457
151.45.100.88 0:0:0:0:0:ffff:972d:6458
151.45.100.89 0:0:0:0:0:ffff:972d:6459
151.45.100.90 0:0:0:0:0:ffff:972d:645a
151.45.100.91 0:0:0:0:0:ffff:972d:645b
151.45.100.92 0:0:0:0:0:ffff:972d:645c
151.45.100.93 0:0:0:0:0:ffff:972d:645d
151.45.100.94 0:0:0:0:0:ffff:972d:645e
151.45.100.95 0:0:0:0:0:ffff:972d:645f
151.45.100.96 0:0:0:0:0:ffff:972d:6460
151.45.100.97 0:0:0:0:0:ffff:972d:6461
151.45.100.98 0:0:0:0:0:ffff:972d:6462
151.45.100.99 0:0:0:0:0:ffff:972d:6463
151.45.100.100 0:0:0:0:0:ffff:972d:6464
151.45.100.101 0:0:0:0:0:ffff:972d:6465
151.45.100.102 0:0:0:0:0:ffff:972d:6466
151.45.100.103 0:0:0:0:0:ffff:972d:6467
151.45.100.104 0:0:0:0:0:ffff:972d:6468
151.45.100.105 0:0:0:0:0:ffff:972d:6469
151.45.100.106 0:0:0:0:0:ffff:972d:646a
151.45.100.107 0:0:0:0:0:ffff:972d:646b
151.45.100.108 0:0:0:0:0:ffff:972d:646c
151.45.100.109 0:0:0:0:0:ffff:972d:646d
151.45.100.110 0:0:0:0:0:ffff:972d:646e
151.45.100.111 0:0:0:0:0:ffff:972d:646f
151.45.100.112 0:0:0:0:0:ffff:972d:6470
151.45.100.113 0:0:0:0:0:ffff:972d:6471
151.45.100.114 0:0:0:0:0:ffff:972d:6472
151.45.100.115 0:0:0:0:0:ffff:972d:6473
151.45.100.116 0:0:0:0:0:ffff:972d:6474
151.45.100.117 0:0:0:0:0:ffff:972d:6475
151.45.100.118 0:0:0:0:0:ffff:972d:6476
151.45.100.119 0:0:0:0:0:ffff:972d:6477
151.45.100.120 0:0:0:0:0:ffff:972d:6478


151.45.100.121 0:0:0:0:0:ffff:972d:6479
151.45.100.122 0:0:0:0:0:ffff:972d:647a
151.45.100.123 0:0:0:0:0:ffff:972d:647b
151.45.100.124 0:0:0:0:0:ffff:972d:647c
151.45.100.125 0:0:0:0:0:ffff:972d:647d
151.45.100.126 0:0:0:0:0:ffff:972d:647e
151.45.100.127 0:0:0:0:0:ffff:972d:647f
151.45.100.128 0:0:0:0:0:ffff:972d:6480
151.45.100.129 0:0:0:0:0:ffff:972d:6481
151.45.100.130 0:0:0:0:0:ffff:972d:6482
151.45.100.131 0:0:0:0:0:ffff:972d:6483
151.45.100.132 0:0:0:0:0:ffff:972d:6484
151.45.100.133 0:0:0:0:0:ffff:972d:6485
151.45.100.134 0:0:0:0:0:ffff:972d:6486
151.45.100.135 0:0:0:0:0:ffff:972d:6487
151.45.100.136 0:0:0:0:0:ffff:972d:6488
151.45.100.137 0:0:0:0:0:ffff:972d:6489
151.45.100.138 0:0:0:0:0:ffff:972d:648a
151.45.100.139 0:0:0:0:0:ffff:972d:648b
151.45.100.140 0:0:0:0:0:ffff:972d:648c
151.45.100.141 0:0:0:0:0:ffff:972d:648d
151.45.100.142 0:0:0:0:0:ffff:972d:648e
151.45.100.143 0:0:0:0:0:ffff:972d:648f
151.45.100.144 0:0:0:0:0:ffff:972d:6490
151.45.100.145 0:0:0:0:0:ffff:972d:6491
151.45.100.146 0:0:0:0:0:ffff:972d:6492
151.45.100.147 0:0:0:0:0:ffff:972d:6493
151.45.100.148 0:0:0:0:0:ffff:972d:6494
151.45.100.149 0:0:0:0:0:ffff:972d:6495
151.45.100.150 0:0:0:0:0:ffff:972d:6496
151.45.100.151 0:0:0:0:0:ffff:972d:6497
151.45.100.152 0:0:0:0:0:ffff:972d:6498
151.45.100.153 0:0:0:0:0:ffff:972d:6499
151.45.100.154 0:0:0:0:0:ffff:972d:649a
151.45.100.155 0:0:0:0:0:ffff:972d:649b
151.45.100.156 0:0:0:0:0:ffff:972d:649c
151.45.100.157 0:0:0:0:0:ffff:972d:649d
151.45.100.158 0:0:0:0:0:ffff:972d:649e
151.45.100.159 0:0:0:0:0:ffff:972d:649f
151.45.100.160 0:0:0:0:0:ffff:972d:64a0
151.45.100.161 0:0:0:0:0:ffff:972d:64a1
151.45.100.162 0:0:0:0:0:ffff:972d:64a2
151.45.100.163 0:0:0:0:0:ffff:972d:64a3
151.45.100.164 0:0:0:0:0:ffff:972d:64a4
151.45.100.165 0:0:0:0:0:ffff:972d:64a5
151.45.100.166 0:0:0:0:0:ffff:972d:64a6
151.45.100.167 0:0:0:0:0:ffff:972d:64a7
151.45.100.168 0:0:0:0:0:ffff:972d:64a8
151.45.100.169 0:0:0:0:0:ffff:972d:64a9
151.45.100.170 0:0:0:0:0:ffff:972d:64aa
151.45.100.171 0:0:0:0:0:ffff:972d:64ab
151.45.100.172 0:0:0:0:0:ffff:972d:64ac
151.45.100.173 0:0:0:0:0:ffff:972d:64ad
151.45.100.174 0:0:0:0:0:ffff:972d:64ae
151.45.100.175 0:0:0:0:0:ffff:972d:64af
151.45.100.176 0:0:0:0:0:ffff:972d:64b0
151.45.100.177 0:0:0:0:0:ffff:972d:64b1
151.45.100.178 0:0:0:0:0:ffff:972d:64b2
151.45.100.179 0:0:0:0:0:ffff:972d:64b3
151.45.100.180 0:0:0:0:0:ffff:972d:64b4


151.45.100.181 0:0:0:0:0:ffff:972d:64b5
151.45.100.182 0:0:0:0:0:ffff:972d:64b6
151.45.100.183 0:0:0:0:0:ffff:972d:64b7
151.45.100.184 0:0:0:0:0:ffff:972d:64b8
151.45.100.185 0:0:0:0:0:ffff:972d:64b9
151.45.100.186 0:0:0:0:0:ffff:972d:64ba
151.45.100.187 0:0:0:0:0:ffff:972d:64bb
151.45.100.188 0:0:0:0:0:ffff:972d:64bc
151.45.100.189 0:0:0:0:0:ffff:972d:64bd
151.45.100.190 0:0:0:0:0:ffff:972d:64be
151.45.100.191 0:0:0:0:0:ffff:972d:64bf
151.45.100.192 0:0:0:0:0:ffff:972d:64c0
151.45.100.193 0:0:0:0:0:ffff:972d:64c1
151.45.100.194 0:0:0:0:0:ffff:972d:64c2
151.45.100.195 0:0:0:0:0:ffff:972d:64c3
151.45.100.196 0:0:0:0:0:ffff:972d:64c4
151.45.100.197 0:0:0:0:0:ffff:972d:64c5
151.45.100.198 0:0:0:0:0:ffff:972d:64c6
151.45.100.199 0:0:0:0:0:ffff:972d:64c7
151.45.100.200 0:0:0:0:0:ffff:972d:64c8
151.45.100.201 0:0:0:0:0:ffff:972d:64c9
151.45.100.202 0:0:0:0:0:ffff:972d:64ca
151.45.100.203 0:0:0:0:0:ffff:972d:64cb
151.45.100.204 0:0:0:0:0:ffff:972d:64cc
151.45.100.205 0:0:0:0:0:ffff:972d:64cd
151.45.100.206 0:0:0:0:0:ffff:972d:64ce
151.45.100.207 0:0:0:0:0:ffff:972d:64cf
151.45.100.208 0:0:0:0:0:ffff:972d:64d0
151.45.100.209 0:0:0:0:0:ffff:972d:64d1
151.45.100.210 0:0:0:0:0:ffff:972d:64d2
151.45.100.211 0:0:0:0:0:ffff:972d:64d3
151.45.100.212 0:0:0:0:0:ffff:972d:64d4
151.45.100.213 0:0:0:0:0:ffff:972d:64d5
151.45.100.214 0:0:0:0:0:ffff:972d:64d6
151.45.100.215 0:0:0:0:0:ffff:972d:64d7
151.45.100.216 0:0:0:0:0:ffff:972d:64d8
151.45.100.217 0:0:0:0:0:ffff:972d:64d9
151.45.100.218 0:0:0:0:0:ffff:972d:64da
151.45.100.219 0:0:0:0:0:ffff:972d:64db
151.45.100.220 0:0:0:0:0:ffff:972d:64dc
151.45.100.221 0:0:0:0:0:ffff:972d:64dd
151.45.100.222 0:0:0:0:0:ffff:972d:64de
151.45.100.223 0:0:0:0:0:ffff:972d:64df
151.45.100.224 0:0:0:0:0:ffff:972d:64e0
151.45.100.225 0:0:0:0:0:ffff:972d:64e1
151.45.100.226 0:0:0:0:0:ffff:972d:64e2
151.45.100.227 0:0:0:0:0:ffff:972d:64e3
151.45.100.228 0:0:0:0:0:ffff:972d:64e4
151.45.100.229 0:0:0:0:0:ffff:972d:64e5
151.45.100.230 0:0:0:0:0:ffff:972d:64e6
151.45.100.231 0:0:0:0:0:ffff:972d:64e7
151.45.100.232 0:0:0:0:0:ffff:972d:64e8
151.45.100.233 0:0:0:0:0:ffff:972d:64e9
151.45.100.234 0:0:0:0:0:ffff:972d:64ea
151.45.100.235 0:0:0:0:0:ffff:972d:64eb
151.45.100.236 0:0:0:0:0:ffff:972d:64ec
151.45.100.237 0:0:0:0:0:ffff:972d:64ed
151.45.100.238 0:0:0:0:0:ffff:972d:64ee
151.45.100.239 0:0:0:0:0:ffff:972d:64ef
151.45.100.240 0:0:0:0:0:ffff:972d:64f0
151.45.100.241 0:0:0:0:0:ffff:972d:64f1
151.45.100.242 0:0:0:0:0:ffff:972d:64f2
151.45.100.243 0:0:0:0:0:ffff:972d:64f3
151.45.100.244 0:0:0:0:0:ffff:972d:64f4
151.45.100.245 0:0:0:0:0:ffff:972d:64f5
151.45.100.246 0:0:0:0:0:ffff:972d:64f6
151.45.100.247 0:0:0:0:0:ffff:972d:64f7
151.45.100.248 0:0:0:0:0:ffff:972d:64f8
151.45.100.249 0:0:0:0:0:ffff:972d:64f9
151.45.100.250 0:0:0:0:0:ffff:972d:64fa
151.45.100.251 0:0:0:0:0:ffff:972d:64fb
151.45.100.252 0:0:0:0:0:ffff:972d:64fc
151.45.100.253 0:0:0:0:0:ffff:972d:64fd
151.45.100.254 0:0:0:0:0:ffff:972d:64fe
151.45.100.255 0:0:0:0:0:ffff:972d: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.