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
208.71.72.1 0:0:0:0:0:ffff:d047:4801
208.71.72.2 0:0:0:0:0:ffff:d047:4802
208.71.72.3 0:0:0:0:0:ffff:d047:4803
208.71.72.4 0:0:0:0:0:ffff:d047:4804
208.71.72.5 0:0:0:0:0:ffff:d047:4805
208.71.72.6 0:0:0:0:0:ffff:d047:4806
208.71.72.7 0:0:0:0:0:ffff:d047:4807
208.71.72.8 0:0:0:0:0:ffff:d047:4808
208.71.72.9 0:0:0:0:0:ffff:d047:4809
208.71.72.10 0:0:0:0:0:ffff:d047:480a
208.71.72.11 0:0:0:0:0:ffff:d047:480b
208.71.72.12 0:0:0:0:0:ffff:d047:480c
208.71.72.13 0:0:0:0:0:ffff:d047:480d
208.71.72.14 0:0:0:0:0:ffff:d047:480e
208.71.72.15 0:0:0:0:0:ffff:d047:480f
208.71.72.16 0:0:0:0:0:ffff:d047:4810
208.71.72.17 0:0:0:0:0:ffff:d047:4811
208.71.72.18 0:0:0:0:0:ffff:d047:4812
208.71.72.19 0:0:0:0:0:ffff:d047:4813
208.71.72.20 0:0:0:0:0:ffff:d047:4814
208.71.72.21 0:0:0:0:0:ffff:d047:4815
208.71.72.22 0:0:0:0:0:ffff:d047:4816
208.71.72.23 0:0:0:0:0:ffff:d047:4817
208.71.72.24 0:0:0:0:0:ffff:d047:4818
208.71.72.25 0:0:0:0:0:ffff:d047:4819
208.71.72.26 0:0:0:0:0:ffff:d047:481a
208.71.72.27 0:0:0:0:0:ffff:d047:481b
208.71.72.28 0:0:0:0:0:ffff:d047:481c
208.71.72.29 0:0:0:0:0:ffff:d047:481d
208.71.72.30 0:0:0:0:0:ffff:d047:481e
208.71.72.31 0:0:0:0:0:ffff:d047:481f
208.71.72.32 0:0:0:0:0:ffff:d047:4820
208.71.72.33 0:0:0:0:0:ffff:d047:4821
208.71.72.34 0:0:0:0:0:ffff:d047:4822
208.71.72.35 0:0:0:0:0:ffff:d047:4823
208.71.72.36 0:0:0:0:0:ffff:d047:4824
208.71.72.37 0:0:0:0:0:ffff:d047:4825
208.71.72.38 0:0:0:0:0:ffff:d047:4826
208.71.72.39 0:0:0:0:0:ffff:d047:4827
208.71.72.40 0:0:0:0:0:ffff:d047:4828
208.71.72.41 0:0:0:0:0:ffff:d047:4829
208.71.72.42 0:0:0:0:0:ffff:d047:482a
208.71.72.43 0:0:0:0:0:ffff:d047:482b
208.71.72.44 0:0:0:0:0:ffff:d047:482c
208.71.72.45 0:0:0:0:0:ffff:d047:482d
208.71.72.46 0:0:0:0:0:ffff:d047:482e
208.71.72.47 0:0:0:0:0:ffff:d047:482f
208.71.72.48 0:0:0:0:0:ffff:d047:4830
208.71.72.49 0:0:0:0:0:ffff:d047:4831
208.71.72.50 0:0:0:0:0:ffff:d047:4832
208.71.72.51 0:0:0:0:0:ffff:d047:4833
208.71.72.52 0:0:0:0:0:ffff:d047:4834
208.71.72.53 0:0:0:0:0:ffff:d047:4835
208.71.72.54 0:0:0:0:0:ffff:d047:4836
208.71.72.55 0:0:0:0:0:ffff:d047:4837
208.71.72.56 0:0:0:0:0:ffff:d047:4838
208.71.72.57 0:0:0:0:0:ffff:d047:4839
208.71.72.58 0:0:0:0:0:ffff:d047:483a
208.71.72.59 0:0:0:0:0:ffff:d047:483b
208.71.72.60 0:0:0:0:0:ffff:d047:483c


208.71.72.61 0:0:0:0:0:ffff:d047:483d
208.71.72.62 0:0:0:0:0:ffff:d047:483e
208.71.72.63 0:0:0:0:0:ffff:d047:483f
208.71.72.64 0:0:0:0:0:ffff:d047:4840
208.71.72.65 0:0:0:0:0:ffff:d047:4841
208.71.72.66 0:0:0:0:0:ffff:d047:4842
208.71.72.67 0:0:0:0:0:ffff:d047:4843
208.71.72.68 0:0:0:0:0:ffff:d047:4844
208.71.72.69 0:0:0:0:0:ffff:d047:4845
208.71.72.70 0:0:0:0:0:ffff:d047:4846
208.71.72.71 0:0:0:0:0:ffff:d047:4847
208.71.72.72 0:0:0:0:0:ffff:d047:4848
208.71.72.73 0:0:0:0:0:ffff:d047:4849
208.71.72.74 0:0:0:0:0:ffff:d047:484a
208.71.72.75 0:0:0:0:0:ffff:d047:484b
208.71.72.76 0:0:0:0:0:ffff:d047:484c
208.71.72.77 0:0:0:0:0:ffff:d047:484d
208.71.72.78 0:0:0:0:0:ffff:d047:484e
208.71.72.79 0:0:0:0:0:ffff:d047:484f
208.71.72.80 0:0:0:0:0:ffff:d047:4850
208.71.72.81 0:0:0:0:0:ffff:d047:4851
208.71.72.82 0:0:0:0:0:ffff:d047:4852
208.71.72.83 0:0:0:0:0:ffff:d047:4853
208.71.72.84 0:0:0:0:0:ffff:d047:4854
208.71.72.85 0:0:0:0:0:ffff:d047:4855
208.71.72.86 0:0:0:0:0:ffff:d047:4856
208.71.72.87 0:0:0:0:0:ffff:d047:4857
208.71.72.88 0:0:0:0:0:ffff:d047:4858
208.71.72.89 0:0:0:0:0:ffff:d047:4859
208.71.72.90 0:0:0:0:0:ffff:d047:485a
208.71.72.91 0:0:0:0:0:ffff:d047:485b
208.71.72.92 0:0:0:0:0:ffff:d047:485c
208.71.72.93 0:0:0:0:0:ffff:d047:485d
208.71.72.94 0:0:0:0:0:ffff:d047:485e
208.71.72.95 0:0:0:0:0:ffff:d047:485f
208.71.72.96 0:0:0:0:0:ffff:d047:4860
208.71.72.97 0:0:0:0:0:ffff:d047:4861
208.71.72.98 0:0:0:0:0:ffff:d047:4862
208.71.72.99 0:0:0:0:0:ffff:d047:4863
208.71.72.100 0:0:0:0:0:ffff:d047:4864
208.71.72.101 0:0:0:0:0:ffff:d047:4865
208.71.72.102 0:0:0:0:0:ffff:d047:4866
208.71.72.103 0:0:0:0:0:ffff:d047:4867
208.71.72.104 0:0:0:0:0:ffff:d047:4868
208.71.72.105 0:0:0:0:0:ffff:d047:4869
208.71.72.106 0:0:0:0:0:ffff:d047:486a
208.71.72.107 0:0:0:0:0:ffff:d047:486b
208.71.72.108 0:0:0:0:0:ffff:d047:486c
208.71.72.109 0:0:0:0:0:ffff:d047:486d
208.71.72.110 0:0:0:0:0:ffff:d047:486e
208.71.72.111 0:0:0:0:0:ffff:d047:486f
208.71.72.112 0:0:0:0:0:ffff:d047:4870
208.71.72.113 0:0:0:0:0:ffff:d047:4871
208.71.72.114 0:0:0:0:0:ffff:d047:4872
208.71.72.115 0:0:0:0:0:ffff:d047:4873
208.71.72.116 0:0:0:0:0:ffff:d047:4874
208.71.72.117 0:0:0:0:0:ffff:d047:4875
208.71.72.118 0:0:0:0:0:ffff:d047:4876
208.71.72.119 0:0:0:0:0:ffff:d047:4877
208.71.72.120 0:0:0:0:0:ffff:d047:4878


208.71.72.121 0:0:0:0:0:ffff:d047:4879
208.71.72.122 0:0:0:0:0:ffff:d047:487a
208.71.72.123 0:0:0:0:0:ffff:d047:487b
208.71.72.124 0:0:0:0:0:ffff:d047:487c
208.71.72.125 0:0:0:0:0:ffff:d047:487d
208.71.72.126 0:0:0:0:0:ffff:d047:487e
208.71.72.127 0:0:0:0:0:ffff:d047:487f
208.71.72.128 0:0:0:0:0:ffff:d047:4880
208.71.72.129 0:0:0:0:0:ffff:d047:4881
208.71.72.130 0:0:0:0:0:ffff:d047:4882
208.71.72.131 0:0:0:0:0:ffff:d047:4883
208.71.72.132 0:0:0:0:0:ffff:d047:4884
208.71.72.133 0:0:0:0:0:ffff:d047:4885
208.71.72.134 0:0:0:0:0:ffff:d047:4886
208.71.72.135 0:0:0:0:0:ffff:d047:4887
208.71.72.136 0:0:0:0:0:ffff:d047:4888
208.71.72.137 0:0:0:0:0:ffff:d047:4889
208.71.72.138 0:0:0:0:0:ffff:d047:488a
208.71.72.139 0:0:0:0:0:ffff:d047:488b
208.71.72.140 0:0:0:0:0:ffff:d047:488c
208.71.72.141 0:0:0:0:0:ffff:d047:488d
208.71.72.142 0:0:0:0:0:ffff:d047:488e
208.71.72.143 0:0:0:0:0:ffff:d047:488f
208.71.72.144 0:0:0:0:0:ffff:d047:4890
208.71.72.145 0:0:0:0:0:ffff:d047:4891
208.71.72.146 0:0:0:0:0:ffff:d047:4892
208.71.72.147 0:0:0:0:0:ffff:d047:4893
208.71.72.148 0:0:0:0:0:ffff:d047:4894
208.71.72.149 0:0:0:0:0:ffff:d047:4895
208.71.72.150 0:0:0:0:0:ffff:d047:4896
208.71.72.151 0:0:0:0:0:ffff:d047:4897
208.71.72.152 0:0:0:0:0:ffff:d047:4898
208.71.72.153 0:0:0:0:0:ffff:d047:4899
208.71.72.154 0:0:0:0:0:ffff:d047:489a
208.71.72.155 0:0:0:0:0:ffff:d047:489b
208.71.72.156 0:0:0:0:0:ffff:d047:489c
208.71.72.157 0:0:0:0:0:ffff:d047:489d
208.71.72.158 0:0:0:0:0:ffff:d047:489e
208.71.72.159 0:0:0:0:0:ffff:d047:489f
208.71.72.160 0:0:0:0:0:ffff:d047:48a0
208.71.72.161 0:0:0:0:0:ffff:d047:48a1
208.71.72.162 0:0:0:0:0:ffff:d047:48a2
208.71.72.163 0:0:0:0:0:ffff:d047:48a3
208.71.72.164 0:0:0:0:0:ffff:d047:48a4
208.71.72.165 0:0:0:0:0:ffff:d047:48a5
208.71.72.166 0:0:0:0:0:ffff:d047:48a6
208.71.72.167 0:0:0:0:0:ffff:d047:48a7
208.71.72.168 0:0:0:0:0:ffff:d047:48a8
208.71.72.169 0:0:0:0:0:ffff:d047:48a9
208.71.72.170 0:0:0:0:0:ffff:d047:48aa
208.71.72.171 0:0:0:0:0:ffff:d047:48ab
208.71.72.172 0:0:0:0:0:ffff:d047:48ac
208.71.72.173 0:0:0:0:0:ffff:d047:48ad
208.71.72.174 0:0:0:0:0:ffff:d047:48ae
208.71.72.175 0:0:0:0:0:ffff:d047:48af
208.71.72.176 0:0:0:0:0:ffff:d047:48b0
208.71.72.177 0:0:0:0:0:ffff:d047:48b1
208.71.72.178 0:0:0:0:0:ffff:d047:48b2
208.71.72.179 0:0:0:0:0:ffff:d047:48b3
208.71.72.180 0:0:0:0:0:ffff:d047:48b4


208.71.72.181 0:0:0:0:0:ffff:d047:48b5
208.71.72.182 0:0:0:0:0:ffff:d047:48b6
208.71.72.183 0:0:0:0:0:ffff:d047:48b7
208.71.72.184 0:0:0:0:0:ffff:d047:48b8
208.71.72.185 0:0:0:0:0:ffff:d047:48b9
208.71.72.186 0:0:0:0:0:ffff:d047:48ba
208.71.72.187 0:0:0:0:0:ffff:d047:48bb
208.71.72.188 0:0:0:0:0:ffff:d047:48bc
208.71.72.189 0:0:0:0:0:ffff:d047:48bd
208.71.72.190 0:0:0:0:0:ffff:d047:48be
208.71.72.191 0:0:0:0:0:ffff:d047:48bf
208.71.72.192 0:0:0:0:0:ffff:d047:48c0
208.71.72.193 0:0:0:0:0:ffff:d047:48c1
208.71.72.194 0:0:0:0:0:ffff:d047:48c2
208.71.72.195 0:0:0:0:0:ffff:d047:48c3
208.71.72.196 0:0:0:0:0:ffff:d047:48c4
208.71.72.197 0:0:0:0:0:ffff:d047:48c5
208.71.72.198 0:0:0:0:0:ffff:d047:48c6
208.71.72.199 0:0:0:0:0:ffff:d047:48c7
208.71.72.200 0:0:0:0:0:ffff:d047:48c8
208.71.72.201 0:0:0:0:0:ffff:d047:48c9
208.71.72.202 0:0:0:0:0:ffff:d047:48ca
208.71.72.203 0:0:0:0:0:ffff:d047:48cb
208.71.72.204 0:0:0:0:0:ffff:d047:48cc
208.71.72.205 0:0:0:0:0:ffff:d047:48cd
208.71.72.206 0:0:0:0:0:ffff:d047:48ce
208.71.72.207 0:0:0:0:0:ffff:d047:48cf
208.71.72.208 0:0:0:0:0:ffff:d047:48d0
208.71.72.209 0:0:0:0:0:ffff:d047:48d1
208.71.72.210 0:0:0:0:0:ffff:d047:48d2
208.71.72.211 0:0:0:0:0:ffff:d047:48d3
208.71.72.212 0:0:0:0:0:ffff:d047:48d4
208.71.72.213 0:0:0:0:0:ffff:d047:48d5
208.71.72.214 0:0:0:0:0:ffff:d047:48d6
208.71.72.215 0:0:0:0:0:ffff:d047:48d7
208.71.72.216 0:0:0:0:0:ffff:d047:48d8
208.71.72.217 0:0:0:0:0:ffff:d047:48d9
208.71.72.218 0:0:0:0:0:ffff:d047:48da
208.71.72.219 0:0:0:0:0:ffff:d047:48db
208.71.72.220 0:0:0:0:0:ffff:d047:48dc
208.71.72.221 0:0:0:0:0:ffff:d047:48dd
208.71.72.222 0:0:0:0:0:ffff:d047:48de
208.71.72.223 0:0:0:0:0:ffff:d047:48df
208.71.72.224 0:0:0:0:0:ffff:d047:48e0
208.71.72.225 0:0:0:0:0:ffff:d047:48e1
208.71.72.226 0:0:0:0:0:ffff:d047:48e2
208.71.72.227 0:0:0:0:0:ffff:d047:48e3
208.71.72.228 0:0:0:0:0:ffff:d047:48e4
208.71.72.229 0:0:0:0:0:ffff:d047:48e5
208.71.72.230 0:0:0:0:0:ffff:d047:48e6
208.71.72.231 0:0:0:0:0:ffff:d047:48e7
208.71.72.232 0:0:0:0:0:ffff:d047:48e8
208.71.72.233 0:0:0:0:0:ffff:d047:48e9
208.71.72.234 0:0:0:0:0:ffff:d047:48ea
208.71.72.235 0:0:0:0:0:ffff:d047:48eb
208.71.72.236 0:0:0:0:0:ffff:d047:48ec
208.71.72.237 0:0:0:0:0:ffff:d047:48ed
208.71.72.238 0:0:0:0:0:ffff:d047:48ee
208.71.72.239 0:0:0:0:0:ffff:d047:48ef
208.71.72.240 0:0:0:0:0:ffff:d047:48f0
208.71.72.241 0:0:0:0:0:ffff:d047:48f1
208.71.72.242 0:0:0:0:0:ffff:d047:48f2
208.71.72.243 0:0:0:0:0:ffff:d047:48f3
208.71.72.244 0:0:0:0:0:ffff:d047:48f4
208.71.72.245 0:0:0:0:0:ffff:d047:48f5
208.71.72.246 0:0:0:0:0:ffff:d047:48f6
208.71.72.247 0:0:0:0:0:ffff:d047:48f7
208.71.72.248 0:0:0:0:0:ffff:d047:48f8
208.71.72.249 0:0:0:0:0:ffff:d047:48f9
208.71.72.250 0:0:0:0:0:ffff:d047:48fa
208.71.72.251 0:0:0:0:0:ffff:d047:48fb
208.71.72.252 0:0:0:0:0:ffff:d047:48fc
208.71.72.253 0:0:0:0:0:ffff:d047:48fd
208.71.72.254 0:0:0:0:0:ffff:d047:48fe
208.71.72.255 0:0:0:0:0:ffff:d047:48ff


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.