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
12.221.100.1 0:0:0:0:0:ffff:cdd:6401
12.221.100.2 0:0:0:0:0:ffff:cdd:6402
12.221.100.3 0:0:0:0:0:ffff:cdd:6403
12.221.100.4 0:0:0:0:0:ffff:cdd:6404
12.221.100.5 0:0:0:0:0:ffff:cdd:6405
12.221.100.6 0:0:0:0:0:ffff:cdd:6406
12.221.100.7 0:0:0:0:0:ffff:cdd:6407
12.221.100.8 0:0:0:0:0:ffff:cdd:6408
12.221.100.9 0:0:0:0:0:ffff:cdd:6409
12.221.100.10 0:0:0:0:0:ffff:cdd:640a
12.221.100.11 0:0:0:0:0:ffff:cdd:640b
12.221.100.12 0:0:0:0:0:ffff:cdd:640c
12.221.100.13 0:0:0:0:0:ffff:cdd:640d
12.221.100.14 0:0:0:0:0:ffff:cdd:640e
12.221.100.15 0:0:0:0:0:ffff:cdd:640f
12.221.100.16 0:0:0:0:0:ffff:cdd:6410
12.221.100.17 0:0:0:0:0:ffff:cdd:6411
12.221.100.18 0:0:0:0:0:ffff:cdd:6412
12.221.100.19 0:0:0:0:0:ffff:cdd:6413
12.221.100.20 0:0:0:0:0:ffff:cdd:6414
12.221.100.21 0:0:0:0:0:ffff:cdd:6415
12.221.100.22 0:0:0:0:0:ffff:cdd:6416
12.221.100.23 0:0:0:0:0:ffff:cdd:6417
12.221.100.24 0:0:0:0:0:ffff:cdd:6418
12.221.100.25 0:0:0:0:0:ffff:cdd:6419
12.221.100.26 0:0:0:0:0:ffff:cdd:641a
12.221.100.27 0:0:0:0:0:ffff:cdd:641b
12.221.100.28 0:0:0:0:0:ffff:cdd:641c
12.221.100.29 0:0:0:0:0:ffff:cdd:641d
12.221.100.30 0:0:0:0:0:ffff:cdd:641e
12.221.100.31 0:0:0:0:0:ffff:cdd:641f
12.221.100.32 0:0:0:0:0:ffff:cdd:6420
12.221.100.33 0:0:0:0:0:ffff:cdd:6421
12.221.100.34 0:0:0:0:0:ffff:cdd:6422
12.221.100.35 0:0:0:0:0:ffff:cdd:6423
12.221.100.36 0:0:0:0:0:ffff:cdd:6424
12.221.100.37 0:0:0:0:0:ffff:cdd:6425
12.221.100.38 0:0:0:0:0:ffff:cdd:6426
12.221.100.39 0:0:0:0:0:ffff:cdd:6427
12.221.100.40 0:0:0:0:0:ffff:cdd:6428
12.221.100.41 0:0:0:0:0:ffff:cdd:6429
12.221.100.42 0:0:0:0:0:ffff:cdd:642a
12.221.100.43 0:0:0:0:0:ffff:cdd:642b
12.221.100.44 0:0:0:0:0:ffff:cdd:642c
12.221.100.45 0:0:0:0:0:ffff:cdd:642d
12.221.100.46 0:0:0:0:0:ffff:cdd:642e
12.221.100.47 0:0:0:0:0:ffff:cdd:642f
12.221.100.48 0:0:0:0:0:ffff:cdd:6430
12.221.100.49 0:0:0:0:0:ffff:cdd:6431
12.221.100.50 0:0:0:0:0:ffff:cdd:6432
12.221.100.51 0:0:0:0:0:ffff:cdd:6433
12.221.100.52 0:0:0:0:0:ffff:cdd:6434
12.221.100.53 0:0:0:0:0:ffff:cdd:6435
12.221.100.54 0:0:0:0:0:ffff:cdd:6436
12.221.100.55 0:0:0:0:0:ffff:cdd:6437
12.221.100.56 0:0:0:0:0:ffff:cdd:6438
12.221.100.57 0:0:0:0:0:ffff:cdd:6439
12.221.100.58 0:0:0:0:0:ffff:cdd:643a
12.221.100.59 0:0:0:0:0:ffff:cdd:643b
12.221.100.60 0:0:0:0:0:ffff:cdd:643c


12.221.100.61 0:0:0:0:0:ffff:cdd:643d
12.221.100.62 0:0:0:0:0:ffff:cdd:643e
12.221.100.63 0:0:0:0:0:ffff:cdd:643f
12.221.100.64 0:0:0:0:0:ffff:cdd:6440
12.221.100.65 0:0:0:0:0:ffff:cdd:6441
12.221.100.66 0:0:0:0:0:ffff:cdd:6442
12.221.100.67 0:0:0:0:0:ffff:cdd:6443
12.221.100.68 0:0:0:0:0:ffff:cdd:6444
12.221.100.69 0:0:0:0:0:ffff:cdd:6445
12.221.100.70 0:0:0:0:0:ffff:cdd:6446
12.221.100.71 0:0:0:0:0:ffff:cdd:6447
12.221.100.72 0:0:0:0:0:ffff:cdd:6448
12.221.100.73 0:0:0:0:0:ffff:cdd:6449
12.221.100.74 0:0:0:0:0:ffff:cdd:644a
12.221.100.75 0:0:0:0:0:ffff:cdd:644b
12.221.100.76 0:0:0:0:0:ffff:cdd:644c
12.221.100.77 0:0:0:0:0:ffff:cdd:644d
12.221.100.78 0:0:0:0:0:ffff:cdd:644e
12.221.100.79 0:0:0:0:0:ffff:cdd:644f
12.221.100.80 0:0:0:0:0:ffff:cdd:6450
12.221.100.81 0:0:0:0:0:ffff:cdd:6451
12.221.100.82 0:0:0:0:0:ffff:cdd:6452
12.221.100.83 0:0:0:0:0:ffff:cdd:6453
12.221.100.84 0:0:0:0:0:ffff:cdd:6454
12.221.100.85 0:0:0:0:0:ffff:cdd:6455
12.221.100.86 0:0:0:0:0:ffff:cdd:6456
12.221.100.87 0:0:0:0:0:ffff:cdd:6457
12.221.100.88 0:0:0:0:0:ffff:cdd:6458
12.221.100.89 0:0:0:0:0:ffff:cdd:6459
12.221.100.90 0:0:0:0:0:ffff:cdd:645a
12.221.100.91 0:0:0:0:0:ffff:cdd:645b
12.221.100.92 0:0:0:0:0:ffff:cdd:645c
12.221.100.93 0:0:0:0:0:ffff:cdd:645d
12.221.100.94 0:0:0:0:0:ffff:cdd:645e
12.221.100.95 0:0:0:0:0:ffff:cdd:645f
12.221.100.96 0:0:0:0:0:ffff:cdd:6460
12.221.100.97 0:0:0:0:0:ffff:cdd:6461
12.221.100.98 0:0:0:0:0:ffff:cdd:6462
12.221.100.99 0:0:0:0:0:ffff:cdd:6463
12.221.100.100 0:0:0:0:0:ffff:cdd:6464
12.221.100.101 0:0:0:0:0:ffff:cdd:6465
12.221.100.102 0:0:0:0:0:ffff:cdd:6466
12.221.100.103 0:0:0:0:0:ffff:cdd:6467
12.221.100.104 0:0:0:0:0:ffff:cdd:6468
12.221.100.105 0:0:0:0:0:ffff:cdd:6469
12.221.100.106 0:0:0:0:0:ffff:cdd:646a
12.221.100.107 0:0:0:0:0:ffff:cdd:646b
12.221.100.108 0:0:0:0:0:ffff:cdd:646c
12.221.100.109 0:0:0:0:0:ffff:cdd:646d
12.221.100.110 0:0:0:0:0:ffff:cdd:646e
12.221.100.111 0:0:0:0:0:ffff:cdd:646f
12.221.100.112 0:0:0:0:0:ffff:cdd:6470
12.221.100.113 0:0:0:0:0:ffff:cdd:6471
12.221.100.114 0:0:0:0:0:ffff:cdd:6472
12.221.100.115 0:0:0:0:0:ffff:cdd:6473
12.221.100.116 0:0:0:0:0:ffff:cdd:6474
12.221.100.117 0:0:0:0:0:ffff:cdd:6475
12.221.100.118 0:0:0:0:0:ffff:cdd:6476
12.221.100.119 0:0:0:0:0:ffff:cdd:6477
12.221.100.120 0:0:0:0:0:ffff:cdd:6478


12.221.100.121 0:0:0:0:0:ffff:cdd:6479
12.221.100.122 0:0:0:0:0:ffff:cdd:647a
12.221.100.123 0:0:0:0:0:ffff:cdd:647b
12.221.100.124 0:0:0:0:0:ffff:cdd:647c
12.221.100.125 0:0:0:0:0:ffff:cdd:647d
12.221.100.126 0:0:0:0:0:ffff:cdd:647e
12.221.100.127 0:0:0:0:0:ffff:cdd:647f
12.221.100.128 0:0:0:0:0:ffff:cdd:6480
12.221.100.129 0:0:0:0:0:ffff:cdd:6481
12.221.100.130 0:0:0:0:0:ffff:cdd:6482
12.221.100.131 0:0:0:0:0:ffff:cdd:6483
12.221.100.132 0:0:0:0:0:ffff:cdd:6484
12.221.100.133 0:0:0:0:0:ffff:cdd:6485
12.221.100.134 0:0:0:0:0:ffff:cdd:6486
12.221.100.135 0:0:0:0:0:ffff:cdd:6487
12.221.100.136 0:0:0:0:0:ffff:cdd:6488
12.221.100.137 0:0:0:0:0:ffff:cdd:6489
12.221.100.138 0:0:0:0:0:ffff:cdd:648a
12.221.100.139 0:0:0:0:0:ffff:cdd:648b
12.221.100.140 0:0:0:0:0:ffff:cdd:648c
12.221.100.141 0:0:0:0:0:ffff:cdd:648d
12.221.100.142 0:0:0:0:0:ffff:cdd:648e
12.221.100.143 0:0:0:0:0:ffff:cdd:648f
12.221.100.144 0:0:0:0:0:ffff:cdd:6490
12.221.100.145 0:0:0:0:0:ffff:cdd:6491
12.221.100.146 0:0:0:0:0:ffff:cdd:6492
12.221.100.147 0:0:0:0:0:ffff:cdd:6493
12.221.100.148 0:0:0:0:0:ffff:cdd:6494
12.221.100.149 0:0:0:0:0:ffff:cdd:6495
12.221.100.150 0:0:0:0:0:ffff:cdd:6496
12.221.100.151 0:0:0:0:0:ffff:cdd:6497
12.221.100.152 0:0:0:0:0:ffff:cdd:6498
12.221.100.153 0:0:0:0:0:ffff:cdd:6499
12.221.100.154 0:0:0:0:0:ffff:cdd:649a
12.221.100.155 0:0:0:0:0:ffff:cdd:649b
12.221.100.156 0:0:0:0:0:ffff:cdd:649c
12.221.100.157 0:0:0:0:0:ffff:cdd:649d
12.221.100.158 0:0:0:0:0:ffff:cdd:649e
12.221.100.159 0:0:0:0:0:ffff:cdd:649f
12.221.100.160 0:0:0:0:0:ffff:cdd:64a0
12.221.100.161 0:0:0:0:0:ffff:cdd:64a1
12.221.100.162 0:0:0:0:0:ffff:cdd:64a2
12.221.100.163 0:0:0:0:0:ffff:cdd:64a3
12.221.100.164 0:0:0:0:0:ffff:cdd:64a4
12.221.100.165 0:0:0:0:0:ffff:cdd:64a5
12.221.100.166 0:0:0:0:0:ffff:cdd:64a6
12.221.100.167 0:0:0:0:0:ffff:cdd:64a7
12.221.100.168 0:0:0:0:0:ffff:cdd:64a8
12.221.100.169 0:0:0:0:0:ffff:cdd:64a9
12.221.100.170 0:0:0:0:0:ffff:cdd:64aa
12.221.100.171 0:0:0:0:0:ffff:cdd:64ab
12.221.100.172 0:0:0:0:0:ffff:cdd:64ac
12.221.100.173 0:0:0:0:0:ffff:cdd:64ad
12.221.100.174 0:0:0:0:0:ffff:cdd:64ae
12.221.100.175 0:0:0:0:0:ffff:cdd:64af
12.221.100.176 0:0:0:0:0:ffff:cdd:64b0
12.221.100.177 0:0:0:0:0:ffff:cdd:64b1
12.221.100.178 0:0:0:0:0:ffff:cdd:64b2
12.221.100.179 0:0:0:0:0:ffff:cdd:64b3
12.221.100.180 0:0:0:0:0:ffff:cdd:64b4


12.221.100.181 0:0:0:0:0:ffff:cdd:64b5
12.221.100.182 0:0:0:0:0:ffff:cdd:64b6
12.221.100.183 0:0:0:0:0:ffff:cdd:64b7
12.221.100.184 0:0:0:0:0:ffff:cdd:64b8
12.221.100.185 0:0:0:0:0:ffff:cdd:64b9
12.221.100.186 0:0:0:0:0:ffff:cdd:64ba
12.221.100.187 0:0:0:0:0:ffff:cdd:64bb
12.221.100.188 0:0:0:0:0:ffff:cdd:64bc
12.221.100.189 0:0:0:0:0:ffff:cdd:64bd
12.221.100.190 0:0:0:0:0:ffff:cdd:64be
12.221.100.191 0:0:0:0:0:ffff:cdd:64bf
12.221.100.192 0:0:0:0:0:ffff:cdd:64c0
12.221.100.193 0:0:0:0:0:ffff:cdd:64c1
12.221.100.194 0:0:0:0:0:ffff:cdd:64c2
12.221.100.195 0:0:0:0:0:ffff:cdd:64c3
12.221.100.196 0:0:0:0:0:ffff:cdd:64c4
12.221.100.197 0:0:0:0:0:ffff:cdd:64c5
12.221.100.198 0:0:0:0:0:ffff:cdd:64c6
12.221.100.199 0:0:0:0:0:ffff:cdd:64c7
12.221.100.200 0:0:0:0:0:ffff:cdd:64c8
12.221.100.201 0:0:0:0:0:ffff:cdd:64c9
12.221.100.202 0:0:0:0:0:ffff:cdd:64ca
12.221.100.203 0:0:0:0:0:ffff:cdd:64cb
12.221.100.204 0:0:0:0:0:ffff:cdd:64cc
12.221.100.205 0:0:0:0:0:ffff:cdd:64cd
12.221.100.206 0:0:0:0:0:ffff:cdd:64ce
12.221.100.207 0:0:0:0:0:ffff:cdd:64cf
12.221.100.208 0:0:0:0:0:ffff:cdd:64d0
12.221.100.209 0:0:0:0:0:ffff:cdd:64d1
12.221.100.210 0:0:0:0:0:ffff:cdd:64d2
12.221.100.211 0:0:0:0:0:ffff:cdd:64d3
12.221.100.212 0:0:0:0:0:ffff:cdd:64d4
12.221.100.213 0:0:0:0:0:ffff:cdd:64d5
12.221.100.214 0:0:0:0:0:ffff:cdd:64d6
12.221.100.215 0:0:0:0:0:ffff:cdd:64d7
12.221.100.216 0:0:0:0:0:ffff:cdd:64d8
12.221.100.217 0:0:0:0:0:ffff:cdd:64d9
12.221.100.218 0:0:0:0:0:ffff:cdd:64da
12.221.100.219 0:0:0:0:0:ffff:cdd:64db
12.221.100.220 0:0:0:0:0:ffff:cdd:64dc
12.221.100.221 0:0:0:0:0:ffff:cdd:64dd
12.221.100.222 0:0:0:0:0:ffff:cdd:64de
12.221.100.223 0:0:0:0:0:ffff:cdd:64df
12.221.100.224 0:0:0:0:0:ffff:cdd:64e0
12.221.100.225 0:0:0:0:0:ffff:cdd:64e1
12.221.100.226 0:0:0:0:0:ffff:cdd:64e2
12.221.100.227 0:0:0:0:0:ffff:cdd:64e3
12.221.100.228 0:0:0:0:0:ffff:cdd:64e4
12.221.100.229 0:0:0:0:0:ffff:cdd:64e5
12.221.100.230 0:0:0:0:0:ffff:cdd:64e6
12.221.100.231 0:0:0:0:0:ffff:cdd:64e7
12.221.100.232 0:0:0:0:0:ffff:cdd:64e8
12.221.100.233 0:0:0:0:0:ffff:cdd:64e9
12.221.100.234 0:0:0:0:0:ffff:cdd:64ea
12.221.100.235 0:0:0:0:0:ffff:cdd:64eb
12.221.100.236 0:0:0:0:0:ffff:cdd:64ec
12.221.100.237 0:0:0:0:0:ffff:cdd:64ed
12.221.100.238 0:0:0:0:0:ffff:cdd:64ee
12.221.100.239 0:0:0:0:0:ffff:cdd:64ef
12.221.100.240 0:0:0:0:0:ffff:cdd:64f0
12.221.100.241 0:0:0:0:0:ffff:cdd:64f1
12.221.100.242 0:0:0:0:0:ffff:cdd:64f2
12.221.100.243 0:0:0:0:0:ffff:cdd:64f3
12.221.100.244 0:0:0:0:0:ffff:cdd:64f4
12.221.100.245 0:0:0:0:0:ffff:cdd:64f5
12.221.100.246 0:0:0:0:0:ffff:cdd:64f6
12.221.100.247 0:0:0:0:0:ffff:cdd:64f7
12.221.100.248 0:0:0:0:0:ffff:cdd:64f8
12.221.100.249 0:0:0:0:0:ffff:cdd:64f9
12.221.100.250 0:0:0:0:0:ffff:cdd:64fa
12.221.100.251 0:0:0:0:0:ffff:cdd:64fb
12.221.100.252 0:0:0:0:0:ffff:cdd:64fc
12.221.100.253 0:0:0:0:0:ffff:cdd:64fd
12.221.100.254 0:0:0:0:0:ffff:cdd:64fe
12.221.100.255 0:0:0:0:0:ffff:cdd: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.