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
21.99.72.1 0:0:0:0:0:ffff:1563:4801
21.99.72.2 0:0:0:0:0:ffff:1563:4802
21.99.72.3 0:0:0:0:0:ffff:1563:4803
21.99.72.4 0:0:0:0:0:ffff:1563:4804
21.99.72.5 0:0:0:0:0:ffff:1563:4805
21.99.72.6 0:0:0:0:0:ffff:1563:4806
21.99.72.7 0:0:0:0:0:ffff:1563:4807
21.99.72.8 0:0:0:0:0:ffff:1563:4808
21.99.72.9 0:0:0:0:0:ffff:1563:4809
21.99.72.10 0:0:0:0:0:ffff:1563:480a
21.99.72.11 0:0:0:0:0:ffff:1563:480b
21.99.72.12 0:0:0:0:0:ffff:1563:480c
21.99.72.13 0:0:0:0:0:ffff:1563:480d
21.99.72.14 0:0:0:0:0:ffff:1563:480e
21.99.72.15 0:0:0:0:0:ffff:1563:480f
21.99.72.16 0:0:0:0:0:ffff:1563:4810
21.99.72.17 0:0:0:0:0:ffff:1563:4811
21.99.72.18 0:0:0:0:0:ffff:1563:4812
21.99.72.19 0:0:0:0:0:ffff:1563:4813
21.99.72.20 0:0:0:0:0:ffff:1563:4814
21.99.72.21 0:0:0:0:0:ffff:1563:4815
21.99.72.22 0:0:0:0:0:ffff:1563:4816
21.99.72.23 0:0:0:0:0:ffff:1563:4817
21.99.72.24 0:0:0:0:0:ffff:1563:4818
21.99.72.25 0:0:0:0:0:ffff:1563:4819
21.99.72.26 0:0:0:0:0:ffff:1563:481a
21.99.72.27 0:0:0:0:0:ffff:1563:481b
21.99.72.28 0:0:0:0:0:ffff:1563:481c
21.99.72.29 0:0:0:0:0:ffff:1563:481d
21.99.72.30 0:0:0:0:0:ffff:1563:481e
21.99.72.31 0:0:0:0:0:ffff:1563:481f
21.99.72.32 0:0:0:0:0:ffff:1563:4820
21.99.72.33 0:0:0:0:0:ffff:1563:4821
21.99.72.34 0:0:0:0:0:ffff:1563:4822
21.99.72.35 0:0:0:0:0:ffff:1563:4823
21.99.72.36 0:0:0:0:0:ffff:1563:4824
21.99.72.37 0:0:0:0:0:ffff:1563:4825
21.99.72.38 0:0:0:0:0:ffff:1563:4826
21.99.72.39 0:0:0:0:0:ffff:1563:4827
21.99.72.40 0:0:0:0:0:ffff:1563:4828
21.99.72.41 0:0:0:0:0:ffff:1563:4829
21.99.72.42 0:0:0:0:0:ffff:1563:482a
21.99.72.43 0:0:0:0:0:ffff:1563:482b
21.99.72.44 0:0:0:0:0:ffff:1563:482c
21.99.72.45 0:0:0:0:0:ffff:1563:482d
21.99.72.46 0:0:0:0:0:ffff:1563:482e
21.99.72.47 0:0:0:0:0:ffff:1563:482f
21.99.72.48 0:0:0:0:0:ffff:1563:4830
21.99.72.49 0:0:0:0:0:ffff:1563:4831
21.99.72.50 0:0:0:0:0:ffff:1563:4832
21.99.72.51 0:0:0:0:0:ffff:1563:4833
21.99.72.52 0:0:0:0:0:ffff:1563:4834
21.99.72.53 0:0:0:0:0:ffff:1563:4835
21.99.72.54 0:0:0:0:0:ffff:1563:4836
21.99.72.55 0:0:0:0:0:ffff:1563:4837
21.99.72.56 0:0:0:0:0:ffff:1563:4838
21.99.72.57 0:0:0:0:0:ffff:1563:4839
21.99.72.58 0:0:0:0:0:ffff:1563:483a
21.99.72.59 0:0:0:0:0:ffff:1563:483b
21.99.72.60 0:0:0:0:0:ffff:1563:483c


21.99.72.61 0:0:0:0:0:ffff:1563:483d
21.99.72.62 0:0:0:0:0:ffff:1563:483e
21.99.72.63 0:0:0:0:0:ffff:1563:483f
21.99.72.64 0:0:0:0:0:ffff:1563:4840
21.99.72.65 0:0:0:0:0:ffff:1563:4841
21.99.72.66 0:0:0:0:0:ffff:1563:4842
21.99.72.67 0:0:0:0:0:ffff:1563:4843
21.99.72.68 0:0:0:0:0:ffff:1563:4844
21.99.72.69 0:0:0:0:0:ffff:1563:4845
21.99.72.70 0:0:0:0:0:ffff:1563:4846
21.99.72.71 0:0:0:0:0:ffff:1563:4847
21.99.72.72 0:0:0:0:0:ffff:1563:4848
21.99.72.73 0:0:0:0:0:ffff:1563:4849
21.99.72.74 0:0:0:0:0:ffff:1563:484a
21.99.72.75 0:0:0:0:0:ffff:1563:484b
21.99.72.76 0:0:0:0:0:ffff:1563:484c
21.99.72.77 0:0:0:0:0:ffff:1563:484d
21.99.72.78 0:0:0:0:0:ffff:1563:484e
21.99.72.79 0:0:0:0:0:ffff:1563:484f
21.99.72.80 0:0:0:0:0:ffff:1563:4850
21.99.72.81 0:0:0:0:0:ffff:1563:4851
21.99.72.82 0:0:0:0:0:ffff:1563:4852
21.99.72.83 0:0:0:0:0:ffff:1563:4853
21.99.72.84 0:0:0:0:0:ffff:1563:4854
21.99.72.85 0:0:0:0:0:ffff:1563:4855
21.99.72.86 0:0:0:0:0:ffff:1563:4856
21.99.72.87 0:0:0:0:0:ffff:1563:4857
21.99.72.88 0:0:0:0:0:ffff:1563:4858
21.99.72.89 0:0:0:0:0:ffff:1563:4859
21.99.72.90 0:0:0:0:0:ffff:1563:485a
21.99.72.91 0:0:0:0:0:ffff:1563:485b
21.99.72.92 0:0:0:0:0:ffff:1563:485c
21.99.72.93 0:0:0:0:0:ffff:1563:485d
21.99.72.94 0:0:0:0:0:ffff:1563:485e
21.99.72.95 0:0:0:0:0:ffff:1563:485f
21.99.72.96 0:0:0:0:0:ffff:1563:4860
21.99.72.97 0:0:0:0:0:ffff:1563:4861
21.99.72.98 0:0:0:0:0:ffff:1563:4862
21.99.72.99 0:0:0:0:0:ffff:1563:4863
21.99.72.100 0:0:0:0:0:ffff:1563:4864
21.99.72.101 0:0:0:0:0:ffff:1563:4865
21.99.72.102 0:0:0:0:0:ffff:1563:4866
21.99.72.103 0:0:0:0:0:ffff:1563:4867
21.99.72.104 0:0:0:0:0:ffff:1563:4868
21.99.72.105 0:0:0:0:0:ffff:1563:4869
21.99.72.106 0:0:0:0:0:ffff:1563:486a
21.99.72.107 0:0:0:0:0:ffff:1563:486b
21.99.72.108 0:0:0:0:0:ffff:1563:486c
21.99.72.109 0:0:0:0:0:ffff:1563:486d
21.99.72.110 0:0:0:0:0:ffff:1563:486e
21.99.72.111 0:0:0:0:0:ffff:1563:486f
21.99.72.112 0:0:0:0:0:ffff:1563:4870
21.99.72.113 0:0:0:0:0:ffff:1563:4871
21.99.72.114 0:0:0:0:0:ffff:1563:4872
21.99.72.115 0:0:0:0:0:ffff:1563:4873
21.99.72.116 0:0:0:0:0:ffff:1563:4874
21.99.72.117 0:0:0:0:0:ffff:1563:4875
21.99.72.118 0:0:0:0:0:ffff:1563:4876
21.99.72.119 0:0:0:0:0:ffff:1563:4877
21.99.72.120 0:0:0:0:0:ffff:1563:4878


21.99.72.121 0:0:0:0:0:ffff:1563:4879
21.99.72.122 0:0:0:0:0:ffff:1563:487a
21.99.72.123 0:0:0:0:0:ffff:1563:487b
21.99.72.124 0:0:0:0:0:ffff:1563:487c
21.99.72.125 0:0:0:0:0:ffff:1563:487d
21.99.72.126 0:0:0:0:0:ffff:1563:487e
21.99.72.127 0:0:0:0:0:ffff:1563:487f
21.99.72.128 0:0:0:0:0:ffff:1563:4880
21.99.72.129 0:0:0:0:0:ffff:1563:4881
21.99.72.130 0:0:0:0:0:ffff:1563:4882
21.99.72.131 0:0:0:0:0:ffff:1563:4883
21.99.72.132 0:0:0:0:0:ffff:1563:4884
21.99.72.133 0:0:0:0:0:ffff:1563:4885
21.99.72.134 0:0:0:0:0:ffff:1563:4886
21.99.72.135 0:0:0:0:0:ffff:1563:4887
21.99.72.136 0:0:0:0:0:ffff:1563:4888
21.99.72.137 0:0:0:0:0:ffff:1563:4889
21.99.72.138 0:0:0:0:0:ffff:1563:488a
21.99.72.139 0:0:0:0:0:ffff:1563:488b
21.99.72.140 0:0:0:0:0:ffff:1563:488c
21.99.72.141 0:0:0:0:0:ffff:1563:488d
21.99.72.142 0:0:0:0:0:ffff:1563:488e
21.99.72.143 0:0:0:0:0:ffff:1563:488f
21.99.72.144 0:0:0:0:0:ffff:1563:4890
21.99.72.145 0:0:0:0:0:ffff:1563:4891
21.99.72.146 0:0:0:0:0:ffff:1563:4892
21.99.72.147 0:0:0:0:0:ffff:1563:4893
21.99.72.148 0:0:0:0:0:ffff:1563:4894
21.99.72.149 0:0:0:0:0:ffff:1563:4895
21.99.72.150 0:0:0:0:0:ffff:1563:4896
21.99.72.151 0:0:0:0:0:ffff:1563:4897
21.99.72.152 0:0:0:0:0:ffff:1563:4898
21.99.72.153 0:0:0:0:0:ffff:1563:4899
21.99.72.154 0:0:0:0:0:ffff:1563:489a
21.99.72.155 0:0:0:0:0:ffff:1563:489b
21.99.72.156 0:0:0:0:0:ffff:1563:489c
21.99.72.157 0:0:0:0:0:ffff:1563:489d
21.99.72.158 0:0:0:0:0:ffff:1563:489e
21.99.72.159 0:0:0:0:0:ffff:1563:489f
21.99.72.160 0:0:0:0:0:ffff:1563:48a0
21.99.72.161 0:0:0:0:0:ffff:1563:48a1
21.99.72.162 0:0:0:0:0:ffff:1563:48a2
21.99.72.163 0:0:0:0:0:ffff:1563:48a3
21.99.72.164 0:0:0:0:0:ffff:1563:48a4
21.99.72.165 0:0:0:0:0:ffff:1563:48a5
21.99.72.166 0:0:0:0:0:ffff:1563:48a6
21.99.72.167 0:0:0:0:0:ffff:1563:48a7
21.99.72.168 0:0:0:0:0:ffff:1563:48a8
21.99.72.169 0:0:0:0:0:ffff:1563:48a9
21.99.72.170 0:0:0:0:0:ffff:1563:48aa
21.99.72.171 0:0:0:0:0:ffff:1563:48ab
21.99.72.172 0:0:0:0:0:ffff:1563:48ac
21.99.72.173 0:0:0:0:0:ffff:1563:48ad
21.99.72.174 0:0:0:0:0:ffff:1563:48ae
21.99.72.175 0:0:0:0:0:ffff:1563:48af
21.99.72.176 0:0:0:0:0:ffff:1563:48b0
21.99.72.177 0:0:0:0:0:ffff:1563:48b1
21.99.72.178 0:0:0:0:0:ffff:1563:48b2
21.99.72.179 0:0:0:0:0:ffff:1563:48b3
21.99.72.180 0:0:0:0:0:ffff:1563:48b4


21.99.72.181 0:0:0:0:0:ffff:1563:48b5
21.99.72.182 0:0:0:0:0:ffff:1563:48b6
21.99.72.183 0:0:0:0:0:ffff:1563:48b7
21.99.72.184 0:0:0:0:0:ffff:1563:48b8
21.99.72.185 0:0:0:0:0:ffff:1563:48b9
21.99.72.186 0:0:0:0:0:ffff:1563:48ba
21.99.72.187 0:0:0:0:0:ffff:1563:48bb
21.99.72.188 0:0:0:0:0:ffff:1563:48bc
21.99.72.189 0:0:0:0:0:ffff:1563:48bd
21.99.72.190 0:0:0:0:0:ffff:1563:48be
21.99.72.191 0:0:0:0:0:ffff:1563:48bf
21.99.72.192 0:0:0:0:0:ffff:1563:48c0
21.99.72.193 0:0:0:0:0:ffff:1563:48c1
21.99.72.194 0:0:0:0:0:ffff:1563:48c2
21.99.72.195 0:0:0:0:0:ffff:1563:48c3
21.99.72.196 0:0:0:0:0:ffff:1563:48c4
21.99.72.197 0:0:0:0:0:ffff:1563:48c5
21.99.72.198 0:0:0:0:0:ffff:1563:48c6
21.99.72.199 0:0:0:0:0:ffff:1563:48c7
21.99.72.200 0:0:0:0:0:ffff:1563:48c8
21.99.72.201 0:0:0:0:0:ffff:1563:48c9
21.99.72.202 0:0:0:0:0:ffff:1563:48ca
21.99.72.203 0:0:0:0:0:ffff:1563:48cb
21.99.72.204 0:0:0:0:0:ffff:1563:48cc
21.99.72.205 0:0:0:0:0:ffff:1563:48cd
21.99.72.206 0:0:0:0:0:ffff:1563:48ce
21.99.72.207 0:0:0:0:0:ffff:1563:48cf
21.99.72.208 0:0:0:0:0:ffff:1563:48d0
21.99.72.209 0:0:0:0:0:ffff:1563:48d1
21.99.72.210 0:0:0:0:0:ffff:1563:48d2
21.99.72.211 0:0:0:0:0:ffff:1563:48d3
21.99.72.212 0:0:0:0:0:ffff:1563:48d4
21.99.72.213 0:0:0:0:0:ffff:1563:48d5
21.99.72.214 0:0:0:0:0:ffff:1563:48d6
21.99.72.215 0:0:0:0:0:ffff:1563:48d7
21.99.72.216 0:0:0:0:0:ffff:1563:48d8
21.99.72.217 0:0:0:0:0:ffff:1563:48d9
21.99.72.218 0:0:0:0:0:ffff:1563:48da
21.99.72.219 0:0:0:0:0:ffff:1563:48db
21.99.72.220 0:0:0:0:0:ffff:1563:48dc
21.99.72.221 0:0:0:0:0:ffff:1563:48dd
21.99.72.222 0:0:0:0:0:ffff:1563:48de
21.99.72.223 0:0:0:0:0:ffff:1563:48df
21.99.72.224 0:0:0:0:0:ffff:1563:48e0
21.99.72.225 0:0:0:0:0:ffff:1563:48e1
21.99.72.226 0:0:0:0:0:ffff:1563:48e2
21.99.72.227 0:0:0:0:0:ffff:1563:48e3
21.99.72.228 0:0:0:0:0:ffff:1563:48e4
21.99.72.229 0:0:0:0:0:ffff:1563:48e5
21.99.72.230 0:0:0:0:0:ffff:1563:48e6
21.99.72.231 0:0:0:0:0:ffff:1563:48e7
21.99.72.232 0:0:0:0:0:ffff:1563:48e8
21.99.72.233 0:0:0:0:0:ffff:1563:48e9
21.99.72.234 0:0:0:0:0:ffff:1563:48ea
21.99.72.235 0:0:0:0:0:ffff:1563:48eb
21.99.72.236 0:0:0:0:0:ffff:1563:48ec
21.99.72.237 0:0:0:0:0:ffff:1563:48ed
21.99.72.238 0:0:0:0:0:ffff:1563:48ee
21.99.72.239 0:0:0:0:0:ffff:1563:48ef
21.99.72.240 0:0:0:0:0:ffff:1563:48f0
21.99.72.241 0:0:0:0:0:ffff:1563:48f1
21.99.72.242 0:0:0:0:0:ffff:1563:48f2
21.99.72.243 0:0:0:0:0:ffff:1563:48f3
21.99.72.244 0:0:0:0:0:ffff:1563:48f4
21.99.72.245 0:0:0:0:0:ffff:1563:48f5
21.99.72.246 0:0:0:0:0:ffff:1563:48f6
21.99.72.247 0:0:0:0:0:ffff:1563:48f7
21.99.72.248 0:0:0:0:0:ffff:1563:48f8
21.99.72.249 0:0:0:0:0:ffff:1563:48f9
21.99.72.250 0:0:0:0:0:ffff:1563:48fa
21.99.72.251 0:0:0:0:0:ffff:1563:48fb
21.99.72.252 0:0:0:0:0:ffff:1563:48fc
21.99.72.253 0:0:0:0:0:ffff:1563:48fd
21.99.72.254 0:0:0:0:0:ffff:1563:48fe
21.99.72.255 0:0:0:0:0:ffff:1563:48ff


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.