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
199.145.100.1 0:0:0:0:0:ffff:c791:6401
199.145.100.2 0:0:0:0:0:ffff:c791:6402
199.145.100.3 0:0:0:0:0:ffff:c791:6403
199.145.100.4 0:0:0:0:0:ffff:c791:6404
199.145.100.5 0:0:0:0:0:ffff:c791:6405
199.145.100.6 0:0:0:0:0:ffff:c791:6406
199.145.100.7 0:0:0:0:0:ffff:c791:6407
199.145.100.8 0:0:0:0:0:ffff:c791:6408
199.145.100.9 0:0:0:0:0:ffff:c791:6409
199.145.100.10 0:0:0:0:0:ffff:c791:640a
199.145.100.11 0:0:0:0:0:ffff:c791:640b
199.145.100.12 0:0:0:0:0:ffff:c791:640c
199.145.100.13 0:0:0:0:0:ffff:c791:640d
199.145.100.14 0:0:0:0:0:ffff:c791:640e
199.145.100.15 0:0:0:0:0:ffff:c791:640f
199.145.100.16 0:0:0:0:0:ffff:c791:6410
199.145.100.17 0:0:0:0:0:ffff:c791:6411
199.145.100.18 0:0:0:0:0:ffff:c791:6412
199.145.100.19 0:0:0:0:0:ffff:c791:6413
199.145.100.20 0:0:0:0:0:ffff:c791:6414
199.145.100.21 0:0:0:0:0:ffff:c791:6415
199.145.100.22 0:0:0:0:0:ffff:c791:6416
199.145.100.23 0:0:0:0:0:ffff:c791:6417
199.145.100.24 0:0:0:0:0:ffff:c791:6418
199.145.100.25 0:0:0:0:0:ffff:c791:6419
199.145.100.26 0:0:0:0:0:ffff:c791:641a
199.145.100.27 0:0:0:0:0:ffff:c791:641b
199.145.100.28 0:0:0:0:0:ffff:c791:641c
199.145.100.29 0:0:0:0:0:ffff:c791:641d
199.145.100.30 0:0:0:0:0:ffff:c791:641e
199.145.100.31 0:0:0:0:0:ffff:c791:641f
199.145.100.32 0:0:0:0:0:ffff:c791:6420
199.145.100.33 0:0:0:0:0:ffff:c791:6421
199.145.100.34 0:0:0:0:0:ffff:c791:6422
199.145.100.35 0:0:0:0:0:ffff:c791:6423
199.145.100.36 0:0:0:0:0:ffff:c791:6424
199.145.100.37 0:0:0:0:0:ffff:c791:6425
199.145.100.38 0:0:0:0:0:ffff:c791:6426
199.145.100.39 0:0:0:0:0:ffff:c791:6427
199.145.100.40 0:0:0:0:0:ffff:c791:6428
199.145.100.41 0:0:0:0:0:ffff:c791:6429
199.145.100.42 0:0:0:0:0:ffff:c791:642a
199.145.100.43 0:0:0:0:0:ffff:c791:642b
199.145.100.44 0:0:0:0:0:ffff:c791:642c
199.145.100.45 0:0:0:0:0:ffff:c791:642d
199.145.100.46 0:0:0:0:0:ffff:c791:642e
199.145.100.47 0:0:0:0:0:ffff:c791:642f
199.145.100.48 0:0:0:0:0:ffff:c791:6430
199.145.100.49 0:0:0:0:0:ffff:c791:6431
199.145.100.50 0:0:0:0:0:ffff:c791:6432
199.145.100.51 0:0:0:0:0:ffff:c791:6433
199.145.100.52 0:0:0:0:0:ffff:c791:6434
199.145.100.53 0:0:0:0:0:ffff:c791:6435
199.145.100.54 0:0:0:0:0:ffff:c791:6436
199.145.100.55 0:0:0:0:0:ffff:c791:6437
199.145.100.56 0:0:0:0:0:ffff:c791:6438
199.145.100.57 0:0:0:0:0:ffff:c791:6439
199.145.100.58 0:0:0:0:0:ffff:c791:643a
199.145.100.59 0:0:0:0:0:ffff:c791:643b
199.145.100.60 0:0:0:0:0:ffff:c791:643c


199.145.100.61 0:0:0:0:0:ffff:c791:643d
199.145.100.62 0:0:0:0:0:ffff:c791:643e
199.145.100.63 0:0:0:0:0:ffff:c791:643f
199.145.100.64 0:0:0:0:0:ffff:c791:6440
199.145.100.65 0:0:0:0:0:ffff:c791:6441
199.145.100.66 0:0:0:0:0:ffff:c791:6442
199.145.100.67 0:0:0:0:0:ffff:c791:6443
199.145.100.68 0:0:0:0:0:ffff:c791:6444
199.145.100.69 0:0:0:0:0:ffff:c791:6445
199.145.100.70 0:0:0:0:0:ffff:c791:6446
199.145.100.71 0:0:0:0:0:ffff:c791:6447
199.145.100.72 0:0:0:0:0:ffff:c791:6448
199.145.100.73 0:0:0:0:0:ffff:c791:6449
199.145.100.74 0:0:0:0:0:ffff:c791:644a
199.145.100.75 0:0:0:0:0:ffff:c791:644b
199.145.100.76 0:0:0:0:0:ffff:c791:644c
199.145.100.77 0:0:0:0:0:ffff:c791:644d
199.145.100.78 0:0:0:0:0:ffff:c791:644e
199.145.100.79 0:0:0:0:0:ffff:c791:644f
199.145.100.80 0:0:0:0:0:ffff:c791:6450
199.145.100.81 0:0:0:0:0:ffff:c791:6451
199.145.100.82 0:0:0:0:0:ffff:c791:6452
199.145.100.83 0:0:0:0:0:ffff:c791:6453
199.145.100.84 0:0:0:0:0:ffff:c791:6454
199.145.100.85 0:0:0:0:0:ffff:c791:6455
199.145.100.86 0:0:0:0:0:ffff:c791:6456
199.145.100.87 0:0:0:0:0:ffff:c791:6457
199.145.100.88 0:0:0:0:0:ffff:c791:6458
199.145.100.89 0:0:0:0:0:ffff:c791:6459
199.145.100.90 0:0:0:0:0:ffff:c791:645a
199.145.100.91 0:0:0:0:0:ffff:c791:645b
199.145.100.92 0:0:0:0:0:ffff:c791:645c
199.145.100.93 0:0:0:0:0:ffff:c791:645d
199.145.100.94 0:0:0:0:0:ffff:c791:645e
199.145.100.95 0:0:0:0:0:ffff:c791:645f
199.145.100.96 0:0:0:0:0:ffff:c791:6460
199.145.100.97 0:0:0:0:0:ffff:c791:6461
199.145.100.98 0:0:0:0:0:ffff:c791:6462
199.145.100.99 0:0:0:0:0:ffff:c791:6463
199.145.100.100 0:0:0:0:0:ffff:c791:6464
199.145.100.101 0:0:0:0:0:ffff:c791:6465
199.145.100.102 0:0:0:0:0:ffff:c791:6466
199.145.100.103 0:0:0:0:0:ffff:c791:6467
199.145.100.104 0:0:0:0:0:ffff:c791:6468
199.145.100.105 0:0:0:0:0:ffff:c791:6469
199.145.100.106 0:0:0:0:0:ffff:c791:646a
199.145.100.107 0:0:0:0:0:ffff:c791:646b
199.145.100.108 0:0:0:0:0:ffff:c791:646c
199.145.100.109 0:0:0:0:0:ffff:c791:646d
199.145.100.110 0:0:0:0:0:ffff:c791:646e
199.145.100.111 0:0:0:0:0:ffff:c791:646f
199.145.100.112 0:0:0:0:0:ffff:c791:6470
199.145.100.113 0:0:0:0:0:ffff:c791:6471
199.145.100.114 0:0:0:0:0:ffff:c791:6472
199.145.100.115 0:0:0:0:0:ffff:c791:6473
199.145.100.116 0:0:0:0:0:ffff:c791:6474
199.145.100.117 0:0:0:0:0:ffff:c791:6475
199.145.100.118 0:0:0:0:0:ffff:c791:6476
199.145.100.119 0:0:0:0:0:ffff:c791:6477
199.145.100.120 0:0:0:0:0:ffff:c791:6478


199.145.100.121 0:0:0:0:0:ffff:c791:6479
199.145.100.122 0:0:0:0:0:ffff:c791:647a
199.145.100.123 0:0:0:0:0:ffff:c791:647b
199.145.100.124 0:0:0:0:0:ffff:c791:647c
199.145.100.125 0:0:0:0:0:ffff:c791:647d
199.145.100.126 0:0:0:0:0:ffff:c791:647e
199.145.100.127 0:0:0:0:0:ffff:c791:647f
199.145.100.128 0:0:0:0:0:ffff:c791:6480
199.145.100.129 0:0:0:0:0:ffff:c791:6481
199.145.100.130 0:0:0:0:0:ffff:c791:6482
199.145.100.131 0:0:0:0:0:ffff:c791:6483
199.145.100.132 0:0:0:0:0:ffff:c791:6484
199.145.100.133 0:0:0:0:0:ffff:c791:6485
199.145.100.134 0:0:0:0:0:ffff:c791:6486
199.145.100.135 0:0:0:0:0:ffff:c791:6487
199.145.100.136 0:0:0:0:0:ffff:c791:6488
199.145.100.137 0:0:0:0:0:ffff:c791:6489
199.145.100.138 0:0:0:0:0:ffff:c791:648a
199.145.100.139 0:0:0:0:0:ffff:c791:648b
199.145.100.140 0:0:0:0:0:ffff:c791:648c
199.145.100.141 0:0:0:0:0:ffff:c791:648d
199.145.100.142 0:0:0:0:0:ffff:c791:648e
199.145.100.143 0:0:0:0:0:ffff:c791:648f
199.145.100.144 0:0:0:0:0:ffff:c791:6490
199.145.100.145 0:0:0:0:0:ffff:c791:6491
199.145.100.146 0:0:0:0:0:ffff:c791:6492
199.145.100.147 0:0:0:0:0:ffff:c791:6493
199.145.100.148 0:0:0:0:0:ffff:c791:6494
199.145.100.149 0:0:0:0:0:ffff:c791:6495
199.145.100.150 0:0:0:0:0:ffff:c791:6496
199.145.100.151 0:0:0:0:0:ffff:c791:6497
199.145.100.152 0:0:0:0:0:ffff:c791:6498
199.145.100.153 0:0:0:0:0:ffff:c791:6499
199.145.100.154 0:0:0:0:0:ffff:c791:649a
199.145.100.155 0:0:0:0:0:ffff:c791:649b
199.145.100.156 0:0:0:0:0:ffff:c791:649c
199.145.100.157 0:0:0:0:0:ffff:c791:649d
199.145.100.158 0:0:0:0:0:ffff:c791:649e
199.145.100.159 0:0:0:0:0:ffff:c791:649f
199.145.100.160 0:0:0:0:0:ffff:c791:64a0
199.145.100.161 0:0:0:0:0:ffff:c791:64a1
199.145.100.162 0:0:0:0:0:ffff:c791:64a2
199.145.100.163 0:0:0:0:0:ffff:c791:64a3
199.145.100.164 0:0:0:0:0:ffff:c791:64a4
199.145.100.165 0:0:0:0:0:ffff:c791:64a5
199.145.100.166 0:0:0:0:0:ffff:c791:64a6
199.145.100.167 0:0:0:0:0:ffff:c791:64a7
199.145.100.168 0:0:0:0:0:ffff:c791:64a8
199.145.100.169 0:0:0:0:0:ffff:c791:64a9
199.145.100.170 0:0:0:0:0:ffff:c791:64aa
199.145.100.171 0:0:0:0:0:ffff:c791:64ab
199.145.100.172 0:0:0:0:0:ffff:c791:64ac
199.145.100.173 0:0:0:0:0:ffff:c791:64ad
199.145.100.174 0:0:0:0:0:ffff:c791:64ae
199.145.100.175 0:0:0:0:0:ffff:c791:64af
199.145.100.176 0:0:0:0:0:ffff:c791:64b0
199.145.100.177 0:0:0:0:0:ffff:c791:64b1
199.145.100.178 0:0:0:0:0:ffff:c791:64b2
199.145.100.179 0:0:0:0:0:ffff:c791:64b3
199.145.100.180 0:0:0:0:0:ffff:c791:64b4


199.145.100.181 0:0:0:0:0:ffff:c791:64b5
199.145.100.182 0:0:0:0:0:ffff:c791:64b6
199.145.100.183 0:0:0:0:0:ffff:c791:64b7
199.145.100.184 0:0:0:0:0:ffff:c791:64b8
199.145.100.185 0:0:0:0:0:ffff:c791:64b9
199.145.100.186 0:0:0:0:0:ffff:c791:64ba
199.145.100.187 0:0:0:0:0:ffff:c791:64bb
199.145.100.188 0:0:0:0:0:ffff:c791:64bc
199.145.100.189 0:0:0:0:0:ffff:c791:64bd
199.145.100.190 0:0:0:0:0:ffff:c791:64be
199.145.100.191 0:0:0:0:0:ffff:c791:64bf
199.145.100.192 0:0:0:0:0:ffff:c791:64c0
199.145.100.193 0:0:0:0:0:ffff:c791:64c1
199.145.100.194 0:0:0:0:0:ffff:c791:64c2
199.145.100.195 0:0:0:0:0:ffff:c791:64c3
199.145.100.196 0:0:0:0:0:ffff:c791:64c4
199.145.100.197 0:0:0:0:0:ffff:c791:64c5
199.145.100.198 0:0:0:0:0:ffff:c791:64c6
199.145.100.199 0:0:0:0:0:ffff:c791:64c7
199.145.100.200 0:0:0:0:0:ffff:c791:64c8
199.145.100.201 0:0:0:0:0:ffff:c791:64c9
199.145.100.202 0:0:0:0:0:ffff:c791:64ca
199.145.100.203 0:0:0:0:0:ffff:c791:64cb
199.145.100.204 0:0:0:0:0:ffff:c791:64cc
199.145.100.205 0:0:0:0:0:ffff:c791:64cd
199.145.100.206 0:0:0:0:0:ffff:c791:64ce
199.145.100.207 0:0:0:0:0:ffff:c791:64cf
199.145.100.208 0:0:0:0:0:ffff:c791:64d0
199.145.100.209 0:0:0:0:0:ffff:c791:64d1
199.145.100.210 0:0:0:0:0:ffff:c791:64d2
199.145.100.211 0:0:0:0:0:ffff:c791:64d3
199.145.100.212 0:0:0:0:0:ffff:c791:64d4
199.145.100.213 0:0:0:0:0:ffff:c791:64d5
199.145.100.214 0:0:0:0:0:ffff:c791:64d6
199.145.100.215 0:0:0:0:0:ffff:c791:64d7
199.145.100.216 0:0:0:0:0:ffff:c791:64d8
199.145.100.217 0:0:0:0:0:ffff:c791:64d9
199.145.100.218 0:0:0:0:0:ffff:c791:64da
199.145.100.219 0:0:0:0:0:ffff:c791:64db
199.145.100.220 0:0:0:0:0:ffff:c791:64dc
199.145.100.221 0:0:0:0:0:ffff:c791:64dd
199.145.100.222 0:0:0:0:0:ffff:c791:64de
199.145.100.223 0:0:0:0:0:ffff:c791:64df
199.145.100.224 0:0:0:0:0:ffff:c791:64e0
199.145.100.225 0:0:0:0:0:ffff:c791:64e1
199.145.100.226 0:0:0:0:0:ffff:c791:64e2
199.145.100.227 0:0:0:0:0:ffff:c791:64e3
199.145.100.228 0:0:0:0:0:ffff:c791:64e4
199.145.100.229 0:0:0:0:0:ffff:c791:64e5
199.145.100.230 0:0:0:0:0:ffff:c791:64e6
199.145.100.231 0:0:0:0:0:ffff:c791:64e7
199.145.100.232 0:0:0:0:0:ffff:c791:64e8
199.145.100.233 0:0:0:0:0:ffff:c791:64e9
199.145.100.234 0:0:0:0:0:ffff:c791:64ea
199.145.100.235 0:0:0:0:0:ffff:c791:64eb
199.145.100.236 0:0:0:0:0:ffff:c791:64ec
199.145.100.237 0:0:0:0:0:ffff:c791:64ed
199.145.100.238 0:0:0:0:0:ffff:c791:64ee
199.145.100.239 0:0:0:0:0:ffff:c791:64ef
199.145.100.240 0:0:0:0:0:ffff:c791:64f0
199.145.100.241 0:0:0:0:0:ffff:c791:64f1
199.145.100.242 0:0:0:0:0:ffff:c791:64f2
199.145.100.243 0:0:0:0:0:ffff:c791:64f3
199.145.100.244 0:0:0:0:0:ffff:c791:64f4
199.145.100.245 0:0:0:0:0:ffff:c791:64f5
199.145.100.246 0:0:0:0:0:ffff:c791:64f6
199.145.100.247 0:0:0:0:0:ffff:c791:64f7
199.145.100.248 0:0:0:0:0:ffff:c791:64f8
199.145.100.249 0:0:0:0:0:ffff:c791:64f9
199.145.100.250 0:0:0:0:0:ffff:c791:64fa
199.145.100.251 0:0:0:0:0:ffff:c791:64fb
199.145.100.252 0:0:0:0:0:ffff:c791:64fc
199.145.100.253 0:0:0:0:0:ffff:c791:64fd
199.145.100.254 0:0:0:0:0:ffff:c791:64fe
199.145.100.255 0:0:0:0:0:ffff:c791:64ff


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.