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
144.21.72.1 0:0:0:0:0:ffff:9015:4801
144.21.72.2 0:0:0:0:0:ffff:9015:4802
144.21.72.3 0:0:0:0:0:ffff:9015:4803
144.21.72.4 0:0:0:0:0:ffff:9015:4804
144.21.72.5 0:0:0:0:0:ffff:9015:4805
144.21.72.6 0:0:0:0:0:ffff:9015:4806
144.21.72.7 0:0:0:0:0:ffff:9015:4807
144.21.72.8 0:0:0:0:0:ffff:9015:4808
144.21.72.9 0:0:0:0:0:ffff:9015:4809
144.21.72.10 0:0:0:0:0:ffff:9015:480a
144.21.72.11 0:0:0:0:0:ffff:9015:480b
144.21.72.12 0:0:0:0:0:ffff:9015:480c
144.21.72.13 0:0:0:0:0:ffff:9015:480d
144.21.72.14 0:0:0:0:0:ffff:9015:480e
144.21.72.15 0:0:0:0:0:ffff:9015:480f
144.21.72.16 0:0:0:0:0:ffff:9015:4810
144.21.72.17 0:0:0:0:0:ffff:9015:4811
144.21.72.18 0:0:0:0:0:ffff:9015:4812
144.21.72.19 0:0:0:0:0:ffff:9015:4813
144.21.72.20 0:0:0:0:0:ffff:9015:4814
144.21.72.21 0:0:0:0:0:ffff:9015:4815
144.21.72.22 0:0:0:0:0:ffff:9015:4816
144.21.72.23 0:0:0:0:0:ffff:9015:4817
144.21.72.24 0:0:0:0:0:ffff:9015:4818
144.21.72.25 0:0:0:0:0:ffff:9015:4819
144.21.72.26 0:0:0:0:0:ffff:9015:481a
144.21.72.27 0:0:0:0:0:ffff:9015:481b
144.21.72.28 0:0:0:0:0:ffff:9015:481c
144.21.72.29 0:0:0:0:0:ffff:9015:481d
144.21.72.30 0:0:0:0:0:ffff:9015:481e
144.21.72.31 0:0:0:0:0:ffff:9015:481f
144.21.72.32 0:0:0:0:0:ffff:9015:4820
144.21.72.33 0:0:0:0:0:ffff:9015:4821
144.21.72.34 0:0:0:0:0:ffff:9015:4822
144.21.72.35 0:0:0:0:0:ffff:9015:4823
144.21.72.36 0:0:0:0:0:ffff:9015:4824
144.21.72.37 0:0:0:0:0:ffff:9015:4825
144.21.72.38 0:0:0:0:0:ffff:9015:4826
144.21.72.39 0:0:0:0:0:ffff:9015:4827
144.21.72.40 0:0:0:0:0:ffff:9015:4828
144.21.72.41 0:0:0:0:0:ffff:9015:4829
144.21.72.42 0:0:0:0:0:ffff:9015:482a
144.21.72.43 0:0:0:0:0:ffff:9015:482b
144.21.72.44 0:0:0:0:0:ffff:9015:482c
144.21.72.45 0:0:0:0:0:ffff:9015:482d
144.21.72.46 0:0:0:0:0:ffff:9015:482e
144.21.72.47 0:0:0:0:0:ffff:9015:482f
144.21.72.48 0:0:0:0:0:ffff:9015:4830
144.21.72.49 0:0:0:0:0:ffff:9015:4831
144.21.72.50 0:0:0:0:0:ffff:9015:4832
144.21.72.51 0:0:0:0:0:ffff:9015:4833
144.21.72.52 0:0:0:0:0:ffff:9015:4834
144.21.72.53 0:0:0:0:0:ffff:9015:4835
144.21.72.54 0:0:0:0:0:ffff:9015:4836
144.21.72.55 0:0:0:0:0:ffff:9015:4837
144.21.72.56 0:0:0:0:0:ffff:9015:4838
144.21.72.57 0:0:0:0:0:ffff:9015:4839
144.21.72.58 0:0:0:0:0:ffff:9015:483a
144.21.72.59 0:0:0:0:0:ffff:9015:483b
144.21.72.60 0:0:0:0:0:ffff:9015:483c


144.21.72.61 0:0:0:0:0:ffff:9015:483d
144.21.72.62 0:0:0:0:0:ffff:9015:483e
144.21.72.63 0:0:0:0:0:ffff:9015:483f
144.21.72.64 0:0:0:0:0:ffff:9015:4840
144.21.72.65 0:0:0:0:0:ffff:9015:4841
144.21.72.66 0:0:0:0:0:ffff:9015:4842
144.21.72.67 0:0:0:0:0:ffff:9015:4843
144.21.72.68 0:0:0:0:0:ffff:9015:4844
144.21.72.69 0:0:0:0:0:ffff:9015:4845
144.21.72.70 0:0:0:0:0:ffff:9015:4846
144.21.72.71 0:0:0:0:0:ffff:9015:4847
144.21.72.72 0:0:0:0:0:ffff:9015:4848
144.21.72.73 0:0:0:0:0:ffff:9015:4849
144.21.72.74 0:0:0:0:0:ffff:9015:484a
144.21.72.75 0:0:0:0:0:ffff:9015:484b
144.21.72.76 0:0:0:0:0:ffff:9015:484c
144.21.72.77 0:0:0:0:0:ffff:9015:484d
144.21.72.78 0:0:0:0:0:ffff:9015:484e
144.21.72.79 0:0:0:0:0:ffff:9015:484f
144.21.72.80 0:0:0:0:0:ffff:9015:4850
144.21.72.81 0:0:0:0:0:ffff:9015:4851
144.21.72.82 0:0:0:0:0:ffff:9015:4852
144.21.72.83 0:0:0:0:0:ffff:9015:4853
144.21.72.84 0:0:0:0:0:ffff:9015:4854
144.21.72.85 0:0:0:0:0:ffff:9015:4855
144.21.72.86 0:0:0:0:0:ffff:9015:4856
144.21.72.87 0:0:0:0:0:ffff:9015:4857
144.21.72.88 0:0:0:0:0:ffff:9015:4858
144.21.72.89 0:0:0:0:0:ffff:9015:4859
144.21.72.90 0:0:0:0:0:ffff:9015:485a
144.21.72.91 0:0:0:0:0:ffff:9015:485b
144.21.72.92 0:0:0:0:0:ffff:9015:485c
144.21.72.93 0:0:0:0:0:ffff:9015:485d
144.21.72.94 0:0:0:0:0:ffff:9015:485e
144.21.72.95 0:0:0:0:0:ffff:9015:485f
144.21.72.96 0:0:0:0:0:ffff:9015:4860
144.21.72.97 0:0:0:0:0:ffff:9015:4861
144.21.72.98 0:0:0:0:0:ffff:9015:4862
144.21.72.99 0:0:0:0:0:ffff:9015:4863
144.21.72.100 0:0:0:0:0:ffff:9015:4864
144.21.72.101 0:0:0:0:0:ffff:9015:4865
144.21.72.102 0:0:0:0:0:ffff:9015:4866
144.21.72.103 0:0:0:0:0:ffff:9015:4867
144.21.72.104 0:0:0:0:0:ffff:9015:4868
144.21.72.105 0:0:0:0:0:ffff:9015:4869
144.21.72.106 0:0:0:0:0:ffff:9015:486a
144.21.72.107 0:0:0:0:0:ffff:9015:486b
144.21.72.108 0:0:0:0:0:ffff:9015:486c
144.21.72.109 0:0:0:0:0:ffff:9015:486d
144.21.72.110 0:0:0:0:0:ffff:9015:486e
144.21.72.111 0:0:0:0:0:ffff:9015:486f
144.21.72.112 0:0:0:0:0:ffff:9015:4870
144.21.72.113 0:0:0:0:0:ffff:9015:4871
144.21.72.114 0:0:0:0:0:ffff:9015:4872
144.21.72.115 0:0:0:0:0:ffff:9015:4873
144.21.72.116 0:0:0:0:0:ffff:9015:4874
144.21.72.117 0:0:0:0:0:ffff:9015:4875
144.21.72.118 0:0:0:0:0:ffff:9015:4876
144.21.72.119 0:0:0:0:0:ffff:9015:4877
144.21.72.120 0:0:0:0:0:ffff:9015:4878


144.21.72.121 0:0:0:0:0:ffff:9015:4879
144.21.72.122 0:0:0:0:0:ffff:9015:487a
144.21.72.123 0:0:0:0:0:ffff:9015:487b
144.21.72.124 0:0:0:0:0:ffff:9015:487c
144.21.72.125 0:0:0:0:0:ffff:9015:487d
144.21.72.126 0:0:0:0:0:ffff:9015:487e
144.21.72.127 0:0:0:0:0:ffff:9015:487f
144.21.72.128 0:0:0:0:0:ffff:9015:4880
144.21.72.129 0:0:0:0:0:ffff:9015:4881
144.21.72.130 0:0:0:0:0:ffff:9015:4882
144.21.72.131 0:0:0:0:0:ffff:9015:4883
144.21.72.132 0:0:0:0:0:ffff:9015:4884
144.21.72.133 0:0:0:0:0:ffff:9015:4885
144.21.72.134 0:0:0:0:0:ffff:9015:4886
144.21.72.135 0:0:0:0:0:ffff:9015:4887
144.21.72.136 0:0:0:0:0:ffff:9015:4888
144.21.72.137 0:0:0:0:0:ffff:9015:4889
144.21.72.138 0:0:0:0:0:ffff:9015:488a
144.21.72.139 0:0:0:0:0:ffff:9015:488b
144.21.72.140 0:0:0:0:0:ffff:9015:488c
144.21.72.141 0:0:0:0:0:ffff:9015:488d
144.21.72.142 0:0:0:0:0:ffff:9015:488e
144.21.72.143 0:0:0:0:0:ffff:9015:488f
144.21.72.144 0:0:0:0:0:ffff:9015:4890
144.21.72.145 0:0:0:0:0:ffff:9015:4891
144.21.72.146 0:0:0:0:0:ffff:9015:4892
144.21.72.147 0:0:0:0:0:ffff:9015:4893
144.21.72.148 0:0:0:0:0:ffff:9015:4894
144.21.72.149 0:0:0:0:0:ffff:9015:4895
144.21.72.150 0:0:0:0:0:ffff:9015:4896
144.21.72.151 0:0:0:0:0:ffff:9015:4897
144.21.72.152 0:0:0:0:0:ffff:9015:4898
144.21.72.153 0:0:0:0:0:ffff:9015:4899
144.21.72.154 0:0:0:0:0:ffff:9015:489a
144.21.72.155 0:0:0:0:0:ffff:9015:489b
144.21.72.156 0:0:0:0:0:ffff:9015:489c
144.21.72.157 0:0:0:0:0:ffff:9015:489d
144.21.72.158 0:0:0:0:0:ffff:9015:489e
144.21.72.159 0:0:0:0:0:ffff:9015:489f
144.21.72.160 0:0:0:0:0:ffff:9015:48a0
144.21.72.161 0:0:0:0:0:ffff:9015:48a1
144.21.72.162 0:0:0:0:0:ffff:9015:48a2
144.21.72.163 0:0:0:0:0:ffff:9015:48a3
144.21.72.164 0:0:0:0:0:ffff:9015:48a4
144.21.72.165 0:0:0:0:0:ffff:9015:48a5
144.21.72.166 0:0:0:0:0:ffff:9015:48a6
144.21.72.167 0:0:0:0:0:ffff:9015:48a7
144.21.72.168 0:0:0:0:0:ffff:9015:48a8
144.21.72.169 0:0:0:0:0:ffff:9015:48a9
144.21.72.170 0:0:0:0:0:ffff:9015:48aa
144.21.72.171 0:0:0:0:0:ffff:9015:48ab
144.21.72.172 0:0:0:0:0:ffff:9015:48ac
144.21.72.173 0:0:0:0:0:ffff:9015:48ad
144.21.72.174 0:0:0:0:0:ffff:9015:48ae
144.21.72.175 0:0:0:0:0:ffff:9015:48af
144.21.72.176 0:0:0:0:0:ffff:9015:48b0
144.21.72.177 0:0:0:0:0:ffff:9015:48b1
144.21.72.178 0:0:0:0:0:ffff:9015:48b2
144.21.72.179 0:0:0:0:0:ffff:9015:48b3
144.21.72.180 0:0:0:0:0:ffff:9015:48b4


144.21.72.181 0:0:0:0:0:ffff:9015:48b5
144.21.72.182 0:0:0:0:0:ffff:9015:48b6
144.21.72.183 0:0:0:0:0:ffff:9015:48b7
144.21.72.184 0:0:0:0:0:ffff:9015:48b8
144.21.72.185 0:0:0:0:0:ffff:9015:48b9
144.21.72.186 0:0:0:0:0:ffff:9015:48ba
144.21.72.187 0:0:0:0:0:ffff:9015:48bb
144.21.72.188 0:0:0:0:0:ffff:9015:48bc
144.21.72.189 0:0:0:0:0:ffff:9015:48bd
144.21.72.190 0:0:0:0:0:ffff:9015:48be
144.21.72.191 0:0:0:0:0:ffff:9015:48bf
144.21.72.192 0:0:0:0:0:ffff:9015:48c0
144.21.72.193 0:0:0:0:0:ffff:9015:48c1
144.21.72.194 0:0:0:0:0:ffff:9015:48c2
144.21.72.195 0:0:0:0:0:ffff:9015:48c3
144.21.72.196 0:0:0:0:0:ffff:9015:48c4
144.21.72.197 0:0:0:0:0:ffff:9015:48c5
144.21.72.198 0:0:0:0:0:ffff:9015:48c6
144.21.72.199 0:0:0:0:0:ffff:9015:48c7
144.21.72.200 0:0:0:0:0:ffff:9015:48c8
144.21.72.201 0:0:0:0:0:ffff:9015:48c9
144.21.72.202 0:0:0:0:0:ffff:9015:48ca
144.21.72.203 0:0:0:0:0:ffff:9015:48cb
144.21.72.204 0:0:0:0:0:ffff:9015:48cc
144.21.72.205 0:0:0:0:0:ffff:9015:48cd
144.21.72.206 0:0:0:0:0:ffff:9015:48ce
144.21.72.207 0:0:0:0:0:ffff:9015:48cf
144.21.72.208 0:0:0:0:0:ffff:9015:48d0
144.21.72.209 0:0:0:0:0:ffff:9015:48d1
144.21.72.210 0:0:0:0:0:ffff:9015:48d2
144.21.72.211 0:0:0:0:0:ffff:9015:48d3
144.21.72.212 0:0:0:0:0:ffff:9015:48d4
144.21.72.213 0:0:0:0:0:ffff:9015:48d5
144.21.72.214 0:0:0:0:0:ffff:9015:48d6
144.21.72.215 0:0:0:0:0:ffff:9015:48d7
144.21.72.216 0:0:0:0:0:ffff:9015:48d8
144.21.72.217 0:0:0:0:0:ffff:9015:48d9
144.21.72.218 0:0:0:0:0:ffff:9015:48da
144.21.72.219 0:0:0:0:0:ffff:9015:48db
144.21.72.220 0:0:0:0:0:ffff:9015:48dc
144.21.72.221 0:0:0:0:0:ffff:9015:48dd
144.21.72.222 0:0:0:0:0:ffff:9015:48de
144.21.72.223 0:0:0:0:0:ffff:9015:48df
144.21.72.224 0:0:0:0:0:ffff:9015:48e0
144.21.72.225 0:0:0:0:0:ffff:9015:48e1
144.21.72.226 0:0:0:0:0:ffff:9015:48e2
144.21.72.227 0:0:0:0:0:ffff:9015:48e3
144.21.72.228 0:0:0:0:0:ffff:9015:48e4
144.21.72.229 0:0:0:0:0:ffff:9015:48e5
144.21.72.230 0:0:0:0:0:ffff:9015:48e6
144.21.72.231 0:0:0:0:0:ffff:9015:48e7
144.21.72.232 0:0:0:0:0:ffff:9015:48e8
144.21.72.233 0:0:0:0:0:ffff:9015:48e9
144.21.72.234 0:0:0:0:0:ffff:9015:48ea
144.21.72.235 0:0:0:0:0:ffff:9015:48eb
144.21.72.236 0:0:0:0:0:ffff:9015:48ec
144.21.72.237 0:0:0:0:0:ffff:9015:48ed
144.21.72.238 0:0:0:0:0:ffff:9015:48ee
144.21.72.239 0:0:0:0:0:ffff:9015:48ef
144.21.72.240 0:0:0:0:0:ffff:9015:48f0
144.21.72.241 0:0:0:0:0:ffff:9015:48f1
144.21.72.242 0:0:0:0:0:ffff:9015:48f2
144.21.72.243 0:0:0:0:0:ffff:9015:48f3
144.21.72.244 0:0:0:0:0:ffff:9015:48f4
144.21.72.245 0:0:0:0:0:ffff:9015:48f5
144.21.72.246 0:0:0:0:0:ffff:9015:48f6
144.21.72.247 0:0:0:0:0:ffff:9015:48f7
144.21.72.248 0:0:0:0:0:ffff:9015:48f8
144.21.72.249 0:0:0:0:0:ffff:9015:48f9
144.21.72.250 0:0:0:0:0:ffff:9015:48fa
144.21.72.251 0:0:0:0:0:ffff:9015:48fb
144.21.72.252 0:0:0:0:0:ffff:9015:48fc
144.21.72.253 0:0:0:0:0:ffff:9015:48fd
144.21.72.254 0:0:0:0:0:ffff:9015:48fe
144.21.72.255 0:0:0:0:0:ffff:9015:48ff


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.