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
221.240.72.1 0:0:0:0:0:ffff:ddf0:4801
221.240.72.2 0:0:0:0:0:ffff:ddf0:4802
221.240.72.3 0:0:0:0:0:ffff:ddf0:4803
221.240.72.4 0:0:0:0:0:ffff:ddf0:4804
221.240.72.5 0:0:0:0:0:ffff:ddf0:4805
221.240.72.6 0:0:0:0:0:ffff:ddf0:4806
221.240.72.7 0:0:0:0:0:ffff:ddf0:4807
221.240.72.8 0:0:0:0:0:ffff:ddf0:4808
221.240.72.9 0:0:0:0:0:ffff:ddf0:4809
221.240.72.10 0:0:0:0:0:ffff:ddf0:480a
221.240.72.11 0:0:0:0:0:ffff:ddf0:480b
221.240.72.12 0:0:0:0:0:ffff:ddf0:480c
221.240.72.13 0:0:0:0:0:ffff:ddf0:480d
221.240.72.14 0:0:0:0:0:ffff:ddf0:480e
221.240.72.15 0:0:0:0:0:ffff:ddf0:480f
221.240.72.16 0:0:0:0:0:ffff:ddf0:4810
221.240.72.17 0:0:0:0:0:ffff:ddf0:4811
221.240.72.18 0:0:0:0:0:ffff:ddf0:4812
221.240.72.19 0:0:0:0:0:ffff:ddf0:4813
221.240.72.20 0:0:0:0:0:ffff:ddf0:4814
221.240.72.21 0:0:0:0:0:ffff:ddf0:4815
221.240.72.22 0:0:0:0:0:ffff:ddf0:4816
221.240.72.23 0:0:0:0:0:ffff:ddf0:4817
221.240.72.24 0:0:0:0:0:ffff:ddf0:4818
221.240.72.25 0:0:0:0:0:ffff:ddf0:4819
221.240.72.26 0:0:0:0:0:ffff:ddf0:481a
221.240.72.27 0:0:0:0:0:ffff:ddf0:481b
221.240.72.28 0:0:0:0:0:ffff:ddf0:481c
221.240.72.29 0:0:0:0:0:ffff:ddf0:481d
221.240.72.30 0:0:0:0:0:ffff:ddf0:481e
221.240.72.31 0:0:0:0:0:ffff:ddf0:481f
221.240.72.32 0:0:0:0:0:ffff:ddf0:4820
221.240.72.33 0:0:0:0:0:ffff:ddf0:4821
221.240.72.34 0:0:0:0:0:ffff:ddf0:4822
221.240.72.35 0:0:0:0:0:ffff:ddf0:4823
221.240.72.36 0:0:0:0:0:ffff:ddf0:4824
221.240.72.37 0:0:0:0:0:ffff:ddf0:4825
221.240.72.38 0:0:0:0:0:ffff:ddf0:4826
221.240.72.39 0:0:0:0:0:ffff:ddf0:4827
221.240.72.40 0:0:0:0:0:ffff:ddf0:4828
221.240.72.41 0:0:0:0:0:ffff:ddf0:4829
221.240.72.42 0:0:0:0:0:ffff:ddf0:482a
221.240.72.43 0:0:0:0:0:ffff:ddf0:482b
221.240.72.44 0:0:0:0:0:ffff:ddf0:482c
221.240.72.45 0:0:0:0:0:ffff:ddf0:482d
221.240.72.46 0:0:0:0:0:ffff:ddf0:482e
221.240.72.47 0:0:0:0:0:ffff:ddf0:482f
221.240.72.48 0:0:0:0:0:ffff:ddf0:4830
221.240.72.49 0:0:0:0:0:ffff:ddf0:4831
221.240.72.50 0:0:0:0:0:ffff:ddf0:4832
221.240.72.51 0:0:0:0:0:ffff:ddf0:4833
221.240.72.52 0:0:0:0:0:ffff:ddf0:4834
221.240.72.53 0:0:0:0:0:ffff:ddf0:4835
221.240.72.54 0:0:0:0:0:ffff:ddf0:4836
221.240.72.55 0:0:0:0:0:ffff:ddf0:4837
221.240.72.56 0:0:0:0:0:ffff:ddf0:4838
221.240.72.57 0:0:0:0:0:ffff:ddf0:4839
221.240.72.58 0:0:0:0:0:ffff:ddf0:483a
221.240.72.59 0:0:0:0:0:ffff:ddf0:483b
221.240.72.60 0:0:0:0:0:ffff:ddf0:483c


221.240.72.61 0:0:0:0:0:ffff:ddf0:483d
221.240.72.62 0:0:0:0:0:ffff:ddf0:483e
221.240.72.63 0:0:0:0:0:ffff:ddf0:483f
221.240.72.64 0:0:0:0:0:ffff:ddf0:4840
221.240.72.65 0:0:0:0:0:ffff:ddf0:4841
221.240.72.66 0:0:0:0:0:ffff:ddf0:4842
221.240.72.67 0:0:0:0:0:ffff:ddf0:4843
221.240.72.68 0:0:0:0:0:ffff:ddf0:4844
221.240.72.69 0:0:0:0:0:ffff:ddf0:4845
221.240.72.70 0:0:0:0:0:ffff:ddf0:4846
221.240.72.71 0:0:0:0:0:ffff:ddf0:4847
221.240.72.72 0:0:0:0:0:ffff:ddf0:4848
221.240.72.73 0:0:0:0:0:ffff:ddf0:4849
221.240.72.74 0:0:0:0:0:ffff:ddf0:484a
221.240.72.75 0:0:0:0:0:ffff:ddf0:484b
221.240.72.76 0:0:0:0:0:ffff:ddf0:484c
221.240.72.77 0:0:0:0:0:ffff:ddf0:484d
221.240.72.78 0:0:0:0:0:ffff:ddf0:484e
221.240.72.79 0:0:0:0:0:ffff:ddf0:484f
221.240.72.80 0:0:0:0:0:ffff:ddf0:4850
221.240.72.81 0:0:0:0:0:ffff:ddf0:4851
221.240.72.82 0:0:0:0:0:ffff:ddf0:4852
221.240.72.83 0:0:0:0:0:ffff:ddf0:4853
221.240.72.84 0:0:0:0:0:ffff:ddf0:4854
221.240.72.85 0:0:0:0:0:ffff:ddf0:4855
221.240.72.86 0:0:0:0:0:ffff:ddf0:4856
221.240.72.87 0:0:0:0:0:ffff:ddf0:4857
221.240.72.88 0:0:0:0:0:ffff:ddf0:4858
221.240.72.89 0:0:0:0:0:ffff:ddf0:4859
221.240.72.90 0:0:0:0:0:ffff:ddf0:485a
221.240.72.91 0:0:0:0:0:ffff:ddf0:485b
221.240.72.92 0:0:0:0:0:ffff:ddf0:485c
221.240.72.93 0:0:0:0:0:ffff:ddf0:485d
221.240.72.94 0:0:0:0:0:ffff:ddf0:485e
221.240.72.95 0:0:0:0:0:ffff:ddf0:485f
221.240.72.96 0:0:0:0:0:ffff:ddf0:4860
221.240.72.97 0:0:0:0:0:ffff:ddf0:4861
221.240.72.98 0:0:0:0:0:ffff:ddf0:4862
221.240.72.99 0:0:0:0:0:ffff:ddf0:4863
221.240.72.100 0:0:0:0:0:ffff:ddf0:4864
221.240.72.101 0:0:0:0:0:ffff:ddf0:4865
221.240.72.102 0:0:0:0:0:ffff:ddf0:4866
221.240.72.103 0:0:0:0:0:ffff:ddf0:4867
221.240.72.104 0:0:0:0:0:ffff:ddf0:4868
221.240.72.105 0:0:0:0:0:ffff:ddf0:4869
221.240.72.106 0:0:0:0:0:ffff:ddf0:486a
221.240.72.107 0:0:0:0:0:ffff:ddf0:486b
221.240.72.108 0:0:0:0:0:ffff:ddf0:486c
221.240.72.109 0:0:0:0:0:ffff:ddf0:486d
221.240.72.110 0:0:0:0:0:ffff:ddf0:486e
221.240.72.111 0:0:0:0:0:ffff:ddf0:486f
221.240.72.112 0:0:0:0:0:ffff:ddf0:4870
221.240.72.113 0:0:0:0:0:ffff:ddf0:4871
221.240.72.114 0:0:0:0:0:ffff:ddf0:4872
221.240.72.115 0:0:0:0:0:ffff:ddf0:4873
221.240.72.116 0:0:0:0:0:ffff:ddf0:4874
221.240.72.117 0:0:0:0:0:ffff:ddf0:4875
221.240.72.118 0:0:0:0:0:ffff:ddf0:4876
221.240.72.119 0:0:0:0:0:ffff:ddf0:4877
221.240.72.120 0:0:0:0:0:ffff:ddf0:4878


221.240.72.121 0:0:0:0:0:ffff:ddf0:4879
221.240.72.122 0:0:0:0:0:ffff:ddf0:487a
221.240.72.123 0:0:0:0:0:ffff:ddf0:487b
221.240.72.124 0:0:0:0:0:ffff:ddf0:487c
221.240.72.125 0:0:0:0:0:ffff:ddf0:487d
221.240.72.126 0:0:0:0:0:ffff:ddf0:487e
221.240.72.127 0:0:0:0:0:ffff:ddf0:487f
221.240.72.128 0:0:0:0:0:ffff:ddf0:4880
221.240.72.129 0:0:0:0:0:ffff:ddf0:4881
221.240.72.130 0:0:0:0:0:ffff:ddf0:4882
221.240.72.131 0:0:0:0:0:ffff:ddf0:4883
221.240.72.132 0:0:0:0:0:ffff:ddf0:4884
221.240.72.133 0:0:0:0:0:ffff:ddf0:4885
221.240.72.134 0:0:0:0:0:ffff:ddf0:4886
221.240.72.135 0:0:0:0:0:ffff:ddf0:4887
221.240.72.136 0:0:0:0:0:ffff:ddf0:4888
221.240.72.137 0:0:0:0:0:ffff:ddf0:4889
221.240.72.138 0:0:0:0:0:ffff:ddf0:488a
221.240.72.139 0:0:0:0:0:ffff:ddf0:488b
221.240.72.140 0:0:0:0:0:ffff:ddf0:488c
221.240.72.141 0:0:0:0:0:ffff:ddf0:488d
221.240.72.142 0:0:0:0:0:ffff:ddf0:488e
221.240.72.143 0:0:0:0:0:ffff:ddf0:488f
221.240.72.144 0:0:0:0:0:ffff:ddf0:4890
221.240.72.145 0:0:0:0:0:ffff:ddf0:4891
221.240.72.146 0:0:0:0:0:ffff:ddf0:4892
221.240.72.147 0:0:0:0:0:ffff:ddf0:4893
221.240.72.148 0:0:0:0:0:ffff:ddf0:4894
221.240.72.149 0:0:0:0:0:ffff:ddf0:4895
221.240.72.150 0:0:0:0:0:ffff:ddf0:4896
221.240.72.151 0:0:0:0:0:ffff:ddf0:4897
221.240.72.152 0:0:0:0:0:ffff:ddf0:4898
221.240.72.153 0:0:0:0:0:ffff:ddf0:4899
221.240.72.154 0:0:0:0:0:ffff:ddf0:489a
221.240.72.155 0:0:0:0:0:ffff:ddf0:489b
221.240.72.156 0:0:0:0:0:ffff:ddf0:489c
221.240.72.157 0:0:0:0:0:ffff:ddf0:489d
221.240.72.158 0:0:0:0:0:ffff:ddf0:489e
221.240.72.159 0:0:0:0:0:ffff:ddf0:489f
221.240.72.160 0:0:0:0:0:ffff:ddf0:48a0
221.240.72.161 0:0:0:0:0:ffff:ddf0:48a1
221.240.72.162 0:0:0:0:0:ffff:ddf0:48a2
221.240.72.163 0:0:0:0:0:ffff:ddf0:48a3
221.240.72.164 0:0:0:0:0:ffff:ddf0:48a4
221.240.72.165 0:0:0:0:0:ffff:ddf0:48a5
221.240.72.166 0:0:0:0:0:ffff:ddf0:48a6
221.240.72.167 0:0:0:0:0:ffff:ddf0:48a7
221.240.72.168 0:0:0:0:0:ffff:ddf0:48a8
221.240.72.169 0:0:0:0:0:ffff:ddf0:48a9
221.240.72.170 0:0:0:0:0:ffff:ddf0:48aa
221.240.72.171 0:0:0:0:0:ffff:ddf0:48ab
221.240.72.172 0:0:0:0:0:ffff:ddf0:48ac
221.240.72.173 0:0:0:0:0:ffff:ddf0:48ad
221.240.72.174 0:0:0:0:0:ffff:ddf0:48ae
221.240.72.175 0:0:0:0:0:ffff:ddf0:48af
221.240.72.176 0:0:0:0:0:ffff:ddf0:48b0
221.240.72.177 0:0:0:0:0:ffff:ddf0:48b1
221.240.72.178 0:0:0:0:0:ffff:ddf0:48b2
221.240.72.179 0:0:0:0:0:ffff:ddf0:48b3
221.240.72.180 0:0:0:0:0:ffff:ddf0:48b4


221.240.72.181 0:0:0:0:0:ffff:ddf0:48b5
221.240.72.182 0:0:0:0:0:ffff:ddf0:48b6
221.240.72.183 0:0:0:0:0:ffff:ddf0:48b7
221.240.72.184 0:0:0:0:0:ffff:ddf0:48b8
221.240.72.185 0:0:0:0:0:ffff:ddf0:48b9
221.240.72.186 0:0:0:0:0:ffff:ddf0:48ba
221.240.72.187 0:0:0:0:0:ffff:ddf0:48bb
221.240.72.188 0:0:0:0:0:ffff:ddf0:48bc
221.240.72.189 0:0:0:0:0:ffff:ddf0:48bd
221.240.72.190 0:0:0:0:0:ffff:ddf0:48be
221.240.72.191 0:0:0:0:0:ffff:ddf0:48bf
221.240.72.192 0:0:0:0:0:ffff:ddf0:48c0
221.240.72.193 0:0:0:0:0:ffff:ddf0:48c1
221.240.72.194 0:0:0:0:0:ffff:ddf0:48c2
221.240.72.195 0:0:0:0:0:ffff:ddf0:48c3
221.240.72.196 0:0:0:0:0:ffff:ddf0:48c4
221.240.72.197 0:0:0:0:0:ffff:ddf0:48c5
221.240.72.198 0:0:0:0:0:ffff:ddf0:48c6
221.240.72.199 0:0:0:0:0:ffff:ddf0:48c7
221.240.72.200 0:0:0:0:0:ffff:ddf0:48c8
221.240.72.201 0:0:0:0:0:ffff:ddf0:48c9
221.240.72.202 0:0:0:0:0:ffff:ddf0:48ca
221.240.72.203 0:0:0:0:0:ffff:ddf0:48cb
221.240.72.204 0:0:0:0:0:ffff:ddf0:48cc
221.240.72.205 0:0:0:0:0:ffff:ddf0:48cd
221.240.72.206 0:0:0:0:0:ffff:ddf0:48ce
221.240.72.207 0:0:0:0:0:ffff:ddf0:48cf
221.240.72.208 0:0:0:0:0:ffff:ddf0:48d0
221.240.72.209 0:0:0:0:0:ffff:ddf0:48d1
221.240.72.210 0:0:0:0:0:ffff:ddf0:48d2
221.240.72.211 0:0:0:0:0:ffff:ddf0:48d3
221.240.72.212 0:0:0:0:0:ffff:ddf0:48d4
221.240.72.213 0:0:0:0:0:ffff:ddf0:48d5
221.240.72.214 0:0:0:0:0:ffff:ddf0:48d6
221.240.72.215 0:0:0:0:0:ffff:ddf0:48d7
221.240.72.216 0:0:0:0:0:ffff:ddf0:48d8
221.240.72.217 0:0:0:0:0:ffff:ddf0:48d9
221.240.72.218 0:0:0:0:0:ffff:ddf0:48da
221.240.72.219 0:0:0:0:0:ffff:ddf0:48db
221.240.72.220 0:0:0:0:0:ffff:ddf0:48dc
221.240.72.221 0:0:0:0:0:ffff:ddf0:48dd
221.240.72.222 0:0:0:0:0:ffff:ddf0:48de
221.240.72.223 0:0:0:0:0:ffff:ddf0:48df
221.240.72.224 0:0:0:0:0:ffff:ddf0:48e0
221.240.72.225 0:0:0:0:0:ffff:ddf0:48e1
221.240.72.226 0:0:0:0:0:ffff:ddf0:48e2
221.240.72.227 0:0:0:0:0:ffff:ddf0:48e3
221.240.72.228 0:0:0:0:0:ffff:ddf0:48e4
221.240.72.229 0:0:0:0:0:ffff:ddf0:48e5
221.240.72.230 0:0:0:0:0:ffff:ddf0:48e6
221.240.72.231 0:0:0:0:0:ffff:ddf0:48e7
221.240.72.232 0:0:0:0:0:ffff:ddf0:48e8
221.240.72.233 0:0:0:0:0:ffff:ddf0:48e9
221.240.72.234 0:0:0:0:0:ffff:ddf0:48ea
221.240.72.235 0:0:0:0:0:ffff:ddf0:48eb
221.240.72.236 0:0:0:0:0:ffff:ddf0:48ec
221.240.72.237 0:0:0:0:0:ffff:ddf0:48ed
221.240.72.238 0:0:0:0:0:ffff:ddf0:48ee
221.240.72.239 0:0:0:0:0:ffff:ddf0:48ef
221.240.72.240 0:0:0:0:0:ffff:ddf0:48f0
221.240.72.241 0:0:0:0:0:ffff:ddf0:48f1
221.240.72.242 0:0:0:0:0:ffff:ddf0:48f2
221.240.72.243 0:0:0:0:0:ffff:ddf0:48f3
221.240.72.244 0:0:0:0:0:ffff:ddf0:48f4
221.240.72.245 0:0:0:0:0:ffff:ddf0:48f5
221.240.72.246 0:0:0:0:0:ffff:ddf0:48f6
221.240.72.247 0:0:0:0:0:ffff:ddf0:48f7
221.240.72.248 0:0:0:0:0:ffff:ddf0:48f8
221.240.72.249 0:0:0:0:0:ffff:ddf0:48f9
221.240.72.250 0:0:0:0:0:ffff:ddf0:48fa
221.240.72.251 0:0:0:0:0:ffff:ddf0:48fb
221.240.72.252 0:0:0:0:0:ffff:ddf0:48fc
221.240.72.253 0:0:0:0:0:ffff:ddf0:48fd
221.240.72.254 0:0:0:0:0:ffff:ddf0:48fe
221.240.72.255 0:0:0:0:0:ffff:ddf0:48ff


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.