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
188.21.72.1 0:0:0:0:0:ffff:bc15:4801
188.21.72.2 0:0:0:0:0:ffff:bc15:4802
188.21.72.3 0:0:0:0:0:ffff:bc15:4803
188.21.72.4 0:0:0:0:0:ffff:bc15:4804
188.21.72.5 0:0:0:0:0:ffff:bc15:4805
188.21.72.6 0:0:0:0:0:ffff:bc15:4806
188.21.72.7 0:0:0:0:0:ffff:bc15:4807
188.21.72.8 0:0:0:0:0:ffff:bc15:4808
188.21.72.9 0:0:0:0:0:ffff:bc15:4809
188.21.72.10 0:0:0:0:0:ffff:bc15:480a
188.21.72.11 0:0:0:0:0:ffff:bc15:480b
188.21.72.12 0:0:0:0:0:ffff:bc15:480c
188.21.72.13 0:0:0:0:0:ffff:bc15:480d
188.21.72.14 0:0:0:0:0:ffff:bc15:480e
188.21.72.15 0:0:0:0:0:ffff:bc15:480f
188.21.72.16 0:0:0:0:0:ffff:bc15:4810
188.21.72.17 0:0:0:0:0:ffff:bc15:4811
188.21.72.18 0:0:0:0:0:ffff:bc15:4812
188.21.72.19 0:0:0:0:0:ffff:bc15:4813
188.21.72.20 0:0:0:0:0:ffff:bc15:4814
188.21.72.21 0:0:0:0:0:ffff:bc15:4815
188.21.72.22 0:0:0:0:0:ffff:bc15:4816
188.21.72.23 0:0:0:0:0:ffff:bc15:4817
188.21.72.24 0:0:0:0:0:ffff:bc15:4818
188.21.72.25 0:0:0:0:0:ffff:bc15:4819
188.21.72.26 0:0:0:0:0:ffff:bc15:481a
188.21.72.27 0:0:0:0:0:ffff:bc15:481b
188.21.72.28 0:0:0:0:0:ffff:bc15:481c
188.21.72.29 0:0:0:0:0:ffff:bc15:481d
188.21.72.30 0:0:0:0:0:ffff:bc15:481e
188.21.72.31 0:0:0:0:0:ffff:bc15:481f
188.21.72.32 0:0:0:0:0:ffff:bc15:4820
188.21.72.33 0:0:0:0:0:ffff:bc15:4821
188.21.72.34 0:0:0:0:0:ffff:bc15:4822
188.21.72.35 0:0:0:0:0:ffff:bc15:4823
188.21.72.36 0:0:0:0:0:ffff:bc15:4824
188.21.72.37 0:0:0:0:0:ffff:bc15:4825
188.21.72.38 0:0:0:0:0:ffff:bc15:4826
188.21.72.39 0:0:0:0:0:ffff:bc15:4827
188.21.72.40 0:0:0:0:0:ffff:bc15:4828
188.21.72.41 0:0:0:0:0:ffff:bc15:4829
188.21.72.42 0:0:0:0:0:ffff:bc15:482a
188.21.72.43 0:0:0:0:0:ffff:bc15:482b
188.21.72.44 0:0:0:0:0:ffff:bc15:482c
188.21.72.45 0:0:0:0:0:ffff:bc15:482d
188.21.72.46 0:0:0:0:0:ffff:bc15:482e
188.21.72.47 0:0:0:0:0:ffff:bc15:482f
188.21.72.48 0:0:0:0:0:ffff:bc15:4830
188.21.72.49 0:0:0:0:0:ffff:bc15:4831
188.21.72.50 0:0:0:0:0:ffff:bc15:4832
188.21.72.51 0:0:0:0:0:ffff:bc15:4833
188.21.72.52 0:0:0:0:0:ffff:bc15:4834
188.21.72.53 0:0:0:0:0:ffff:bc15:4835
188.21.72.54 0:0:0:0:0:ffff:bc15:4836
188.21.72.55 0:0:0:0:0:ffff:bc15:4837
188.21.72.56 0:0:0:0:0:ffff:bc15:4838
188.21.72.57 0:0:0:0:0:ffff:bc15:4839
188.21.72.58 0:0:0:0:0:ffff:bc15:483a
188.21.72.59 0:0:0:0:0:ffff:bc15:483b
188.21.72.60 0:0:0:0:0:ffff:bc15:483c


188.21.72.61 0:0:0:0:0:ffff:bc15:483d
188.21.72.62 0:0:0:0:0:ffff:bc15:483e
188.21.72.63 0:0:0:0:0:ffff:bc15:483f
188.21.72.64 0:0:0:0:0:ffff:bc15:4840
188.21.72.65 0:0:0:0:0:ffff:bc15:4841
188.21.72.66 0:0:0:0:0:ffff:bc15:4842
188.21.72.67 0:0:0:0:0:ffff:bc15:4843
188.21.72.68 0:0:0:0:0:ffff:bc15:4844
188.21.72.69 0:0:0:0:0:ffff:bc15:4845
188.21.72.70 0:0:0:0:0:ffff:bc15:4846
188.21.72.71 0:0:0:0:0:ffff:bc15:4847
188.21.72.72 0:0:0:0:0:ffff:bc15:4848
188.21.72.73 0:0:0:0:0:ffff:bc15:4849
188.21.72.74 0:0:0:0:0:ffff:bc15:484a
188.21.72.75 0:0:0:0:0:ffff:bc15:484b
188.21.72.76 0:0:0:0:0:ffff:bc15:484c
188.21.72.77 0:0:0:0:0:ffff:bc15:484d
188.21.72.78 0:0:0:0:0:ffff:bc15:484e
188.21.72.79 0:0:0:0:0:ffff:bc15:484f
188.21.72.80 0:0:0:0:0:ffff:bc15:4850
188.21.72.81 0:0:0:0:0:ffff:bc15:4851
188.21.72.82 0:0:0:0:0:ffff:bc15:4852
188.21.72.83 0:0:0:0:0:ffff:bc15:4853
188.21.72.84 0:0:0:0:0:ffff:bc15:4854
188.21.72.85 0:0:0:0:0:ffff:bc15:4855
188.21.72.86 0:0:0:0:0:ffff:bc15:4856
188.21.72.87 0:0:0:0:0:ffff:bc15:4857
188.21.72.88 0:0:0:0:0:ffff:bc15:4858
188.21.72.89 0:0:0:0:0:ffff:bc15:4859
188.21.72.90 0:0:0:0:0:ffff:bc15:485a
188.21.72.91 0:0:0:0:0:ffff:bc15:485b
188.21.72.92 0:0:0:0:0:ffff:bc15:485c
188.21.72.93 0:0:0:0:0:ffff:bc15:485d
188.21.72.94 0:0:0:0:0:ffff:bc15:485e
188.21.72.95 0:0:0:0:0:ffff:bc15:485f
188.21.72.96 0:0:0:0:0:ffff:bc15:4860
188.21.72.97 0:0:0:0:0:ffff:bc15:4861
188.21.72.98 0:0:0:0:0:ffff:bc15:4862
188.21.72.99 0:0:0:0:0:ffff:bc15:4863
188.21.72.100 0:0:0:0:0:ffff:bc15:4864
188.21.72.101 0:0:0:0:0:ffff:bc15:4865
188.21.72.102 0:0:0:0:0:ffff:bc15:4866
188.21.72.103 0:0:0:0:0:ffff:bc15:4867
188.21.72.104 0:0:0:0:0:ffff:bc15:4868
188.21.72.105 0:0:0:0:0:ffff:bc15:4869
188.21.72.106 0:0:0:0:0:ffff:bc15:486a
188.21.72.107 0:0:0:0:0:ffff:bc15:486b
188.21.72.108 0:0:0:0:0:ffff:bc15:486c
188.21.72.109 0:0:0:0:0:ffff:bc15:486d
188.21.72.110 0:0:0:0:0:ffff:bc15:486e
188.21.72.111 0:0:0:0:0:ffff:bc15:486f
188.21.72.112 0:0:0:0:0:ffff:bc15:4870
188.21.72.113 0:0:0:0:0:ffff:bc15:4871
188.21.72.114 0:0:0:0:0:ffff:bc15:4872
188.21.72.115 0:0:0:0:0:ffff:bc15:4873
188.21.72.116 0:0:0:0:0:ffff:bc15:4874
188.21.72.117 0:0:0:0:0:ffff:bc15:4875
188.21.72.118 0:0:0:0:0:ffff:bc15:4876
188.21.72.119 0:0:0:0:0:ffff:bc15:4877
188.21.72.120 0:0:0:0:0:ffff:bc15:4878


188.21.72.121 0:0:0:0:0:ffff:bc15:4879
188.21.72.122 0:0:0:0:0:ffff:bc15:487a
188.21.72.123 0:0:0:0:0:ffff:bc15:487b
188.21.72.124 0:0:0:0:0:ffff:bc15:487c
188.21.72.125 0:0:0:0:0:ffff:bc15:487d
188.21.72.126 0:0:0:0:0:ffff:bc15:487e
188.21.72.127 0:0:0:0:0:ffff:bc15:487f
188.21.72.128 0:0:0:0:0:ffff:bc15:4880
188.21.72.129 0:0:0:0:0:ffff:bc15:4881
188.21.72.130 0:0:0:0:0:ffff:bc15:4882
188.21.72.131 0:0:0:0:0:ffff:bc15:4883
188.21.72.132 0:0:0:0:0:ffff:bc15:4884
188.21.72.133 0:0:0:0:0:ffff:bc15:4885
188.21.72.134 0:0:0:0:0:ffff:bc15:4886
188.21.72.135 0:0:0:0:0:ffff:bc15:4887
188.21.72.136 0:0:0:0:0:ffff:bc15:4888
188.21.72.137 0:0:0:0:0:ffff:bc15:4889
188.21.72.138 0:0:0:0:0:ffff:bc15:488a
188.21.72.139 0:0:0:0:0:ffff:bc15:488b
188.21.72.140 0:0:0:0:0:ffff:bc15:488c
188.21.72.141 0:0:0:0:0:ffff:bc15:488d
188.21.72.142 0:0:0:0:0:ffff:bc15:488e
188.21.72.143 0:0:0:0:0:ffff:bc15:488f
188.21.72.144 0:0:0:0:0:ffff:bc15:4890
188.21.72.145 0:0:0:0:0:ffff:bc15:4891
188.21.72.146 0:0:0:0:0:ffff:bc15:4892
188.21.72.147 0:0:0:0:0:ffff:bc15:4893
188.21.72.148 0:0:0:0:0:ffff:bc15:4894
188.21.72.149 0:0:0:0:0:ffff:bc15:4895
188.21.72.150 0:0:0:0:0:ffff:bc15:4896
188.21.72.151 0:0:0:0:0:ffff:bc15:4897
188.21.72.152 0:0:0:0:0:ffff:bc15:4898
188.21.72.153 0:0:0:0:0:ffff:bc15:4899
188.21.72.154 0:0:0:0:0:ffff:bc15:489a
188.21.72.155 0:0:0:0:0:ffff:bc15:489b
188.21.72.156 0:0:0:0:0:ffff:bc15:489c
188.21.72.157 0:0:0:0:0:ffff:bc15:489d
188.21.72.158 0:0:0:0:0:ffff:bc15:489e
188.21.72.159 0:0:0:0:0:ffff:bc15:489f
188.21.72.160 0:0:0:0:0:ffff:bc15:48a0
188.21.72.161 0:0:0:0:0:ffff:bc15:48a1
188.21.72.162 0:0:0:0:0:ffff:bc15:48a2
188.21.72.163 0:0:0:0:0:ffff:bc15:48a3
188.21.72.164 0:0:0:0:0:ffff:bc15:48a4
188.21.72.165 0:0:0:0:0:ffff:bc15:48a5
188.21.72.166 0:0:0:0:0:ffff:bc15:48a6
188.21.72.167 0:0:0:0:0:ffff:bc15:48a7
188.21.72.168 0:0:0:0:0:ffff:bc15:48a8
188.21.72.169 0:0:0:0:0:ffff:bc15:48a9
188.21.72.170 0:0:0:0:0:ffff:bc15:48aa
188.21.72.171 0:0:0:0:0:ffff:bc15:48ab
188.21.72.172 0:0:0:0:0:ffff:bc15:48ac
188.21.72.173 0:0:0:0:0:ffff:bc15:48ad
188.21.72.174 0:0:0:0:0:ffff:bc15:48ae
188.21.72.175 0:0:0:0:0:ffff:bc15:48af
188.21.72.176 0:0:0:0:0:ffff:bc15:48b0
188.21.72.177 0:0:0:0:0:ffff:bc15:48b1
188.21.72.178 0:0:0:0:0:ffff:bc15:48b2
188.21.72.179 0:0:0:0:0:ffff:bc15:48b3
188.21.72.180 0:0:0:0:0:ffff:bc15:48b4


188.21.72.181 0:0:0:0:0:ffff:bc15:48b5
188.21.72.182 0:0:0:0:0:ffff:bc15:48b6
188.21.72.183 0:0:0:0:0:ffff:bc15:48b7
188.21.72.184 0:0:0:0:0:ffff:bc15:48b8
188.21.72.185 0:0:0:0:0:ffff:bc15:48b9
188.21.72.186 0:0:0:0:0:ffff:bc15:48ba
188.21.72.187 0:0:0:0:0:ffff:bc15:48bb
188.21.72.188 0:0:0:0:0:ffff:bc15:48bc
188.21.72.189 0:0:0:0:0:ffff:bc15:48bd
188.21.72.190 0:0:0:0:0:ffff:bc15:48be
188.21.72.191 0:0:0:0:0:ffff:bc15:48bf
188.21.72.192 0:0:0:0:0:ffff:bc15:48c0
188.21.72.193 0:0:0:0:0:ffff:bc15:48c1
188.21.72.194 0:0:0:0:0:ffff:bc15:48c2
188.21.72.195 0:0:0:0:0:ffff:bc15:48c3
188.21.72.196 0:0:0:0:0:ffff:bc15:48c4
188.21.72.197 0:0:0:0:0:ffff:bc15:48c5
188.21.72.198 0:0:0:0:0:ffff:bc15:48c6
188.21.72.199 0:0:0:0:0:ffff:bc15:48c7
188.21.72.200 0:0:0:0:0:ffff:bc15:48c8
188.21.72.201 0:0:0:0:0:ffff:bc15:48c9
188.21.72.202 0:0:0:0:0:ffff:bc15:48ca
188.21.72.203 0:0:0:0:0:ffff:bc15:48cb
188.21.72.204 0:0:0:0:0:ffff:bc15:48cc
188.21.72.205 0:0:0:0:0:ffff:bc15:48cd
188.21.72.206 0:0:0:0:0:ffff:bc15:48ce
188.21.72.207 0:0:0:0:0:ffff:bc15:48cf
188.21.72.208 0:0:0:0:0:ffff:bc15:48d0
188.21.72.209 0:0:0:0:0:ffff:bc15:48d1
188.21.72.210 0:0:0:0:0:ffff:bc15:48d2
188.21.72.211 0:0:0:0:0:ffff:bc15:48d3
188.21.72.212 0:0:0:0:0:ffff:bc15:48d4
188.21.72.213 0:0:0:0:0:ffff:bc15:48d5
188.21.72.214 0:0:0:0:0:ffff:bc15:48d6
188.21.72.215 0:0:0:0:0:ffff:bc15:48d7
188.21.72.216 0:0:0:0:0:ffff:bc15:48d8
188.21.72.217 0:0:0:0:0:ffff:bc15:48d9
188.21.72.218 0:0:0:0:0:ffff:bc15:48da
188.21.72.219 0:0:0:0:0:ffff:bc15:48db
188.21.72.220 0:0:0:0:0:ffff:bc15:48dc
188.21.72.221 0:0:0:0:0:ffff:bc15:48dd
188.21.72.222 0:0:0:0:0:ffff:bc15:48de
188.21.72.223 0:0:0:0:0:ffff:bc15:48df
188.21.72.224 0:0:0:0:0:ffff:bc15:48e0
188.21.72.225 0:0:0:0:0:ffff:bc15:48e1
188.21.72.226 0:0:0:0:0:ffff:bc15:48e2
188.21.72.227 0:0:0:0:0:ffff:bc15:48e3
188.21.72.228 0:0:0:0:0:ffff:bc15:48e4
188.21.72.229 0:0:0:0:0:ffff:bc15:48e5
188.21.72.230 0:0:0:0:0:ffff:bc15:48e6
188.21.72.231 0:0:0:0:0:ffff:bc15:48e7
188.21.72.232 0:0:0:0:0:ffff:bc15:48e8
188.21.72.233 0:0:0:0:0:ffff:bc15:48e9
188.21.72.234 0:0:0:0:0:ffff:bc15:48ea
188.21.72.235 0:0:0:0:0:ffff:bc15:48eb
188.21.72.236 0:0:0:0:0:ffff:bc15:48ec
188.21.72.237 0:0:0:0:0:ffff:bc15:48ed
188.21.72.238 0:0:0:0:0:ffff:bc15:48ee
188.21.72.239 0:0:0:0:0:ffff:bc15:48ef
188.21.72.240 0:0:0:0:0:ffff:bc15:48f0
188.21.72.241 0:0:0:0:0:ffff:bc15:48f1
188.21.72.242 0:0:0:0:0:ffff:bc15:48f2
188.21.72.243 0:0:0:0:0:ffff:bc15:48f3
188.21.72.244 0:0:0:0:0:ffff:bc15:48f4
188.21.72.245 0:0:0:0:0:ffff:bc15:48f5
188.21.72.246 0:0:0:0:0:ffff:bc15:48f6
188.21.72.247 0:0:0:0:0:ffff:bc15:48f7
188.21.72.248 0:0:0:0:0:ffff:bc15:48f8
188.21.72.249 0:0:0:0:0:ffff:bc15:48f9
188.21.72.250 0:0:0:0:0:ffff:bc15:48fa
188.21.72.251 0:0:0:0:0:ffff:bc15:48fb
188.21.72.252 0:0:0:0:0:ffff:bc15:48fc
188.21.72.253 0:0:0:0:0:ffff:bc15:48fd
188.21.72.254 0:0:0:0:0:ffff:bc15:48fe
188.21.72.255 0:0:0:0:0:ffff:bc15:48ff


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.