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
100.13.72.1 0:0:0:0:0:ffff:640d:4801
100.13.72.2 0:0:0:0:0:ffff:640d:4802
100.13.72.3 0:0:0:0:0:ffff:640d:4803
100.13.72.4 0:0:0:0:0:ffff:640d:4804
100.13.72.5 0:0:0:0:0:ffff:640d:4805
100.13.72.6 0:0:0:0:0:ffff:640d:4806
100.13.72.7 0:0:0:0:0:ffff:640d:4807
100.13.72.8 0:0:0:0:0:ffff:640d:4808
100.13.72.9 0:0:0:0:0:ffff:640d:4809
100.13.72.10 0:0:0:0:0:ffff:640d:480a
100.13.72.11 0:0:0:0:0:ffff:640d:480b
100.13.72.12 0:0:0:0:0:ffff:640d:480c
100.13.72.13 0:0:0:0:0:ffff:640d:480d
100.13.72.14 0:0:0:0:0:ffff:640d:480e
100.13.72.15 0:0:0:0:0:ffff:640d:480f
100.13.72.16 0:0:0:0:0:ffff:640d:4810
100.13.72.17 0:0:0:0:0:ffff:640d:4811
100.13.72.18 0:0:0:0:0:ffff:640d:4812
100.13.72.19 0:0:0:0:0:ffff:640d:4813
100.13.72.20 0:0:0:0:0:ffff:640d:4814
100.13.72.21 0:0:0:0:0:ffff:640d:4815
100.13.72.22 0:0:0:0:0:ffff:640d:4816
100.13.72.23 0:0:0:0:0:ffff:640d:4817
100.13.72.24 0:0:0:0:0:ffff:640d:4818
100.13.72.25 0:0:0:0:0:ffff:640d:4819
100.13.72.26 0:0:0:0:0:ffff:640d:481a
100.13.72.27 0:0:0:0:0:ffff:640d:481b
100.13.72.28 0:0:0:0:0:ffff:640d:481c
100.13.72.29 0:0:0:0:0:ffff:640d:481d
100.13.72.30 0:0:0:0:0:ffff:640d:481e
100.13.72.31 0:0:0:0:0:ffff:640d:481f
100.13.72.32 0:0:0:0:0:ffff:640d:4820
100.13.72.33 0:0:0:0:0:ffff:640d:4821
100.13.72.34 0:0:0:0:0:ffff:640d:4822
100.13.72.35 0:0:0:0:0:ffff:640d:4823
100.13.72.36 0:0:0:0:0:ffff:640d:4824
100.13.72.37 0:0:0:0:0:ffff:640d:4825
100.13.72.38 0:0:0:0:0:ffff:640d:4826
100.13.72.39 0:0:0:0:0:ffff:640d:4827
100.13.72.40 0:0:0:0:0:ffff:640d:4828
100.13.72.41 0:0:0:0:0:ffff:640d:4829
100.13.72.42 0:0:0:0:0:ffff:640d:482a
100.13.72.43 0:0:0:0:0:ffff:640d:482b
100.13.72.44 0:0:0:0:0:ffff:640d:482c
100.13.72.45 0:0:0:0:0:ffff:640d:482d
100.13.72.46 0:0:0:0:0:ffff:640d:482e
100.13.72.47 0:0:0:0:0:ffff:640d:482f
100.13.72.48 0:0:0:0:0:ffff:640d:4830
100.13.72.49 0:0:0:0:0:ffff:640d:4831
100.13.72.50 0:0:0:0:0:ffff:640d:4832
100.13.72.51 0:0:0:0:0:ffff:640d:4833
100.13.72.52 0:0:0:0:0:ffff:640d:4834
100.13.72.53 0:0:0:0:0:ffff:640d:4835
100.13.72.54 0:0:0:0:0:ffff:640d:4836
100.13.72.55 0:0:0:0:0:ffff:640d:4837
100.13.72.56 0:0:0:0:0:ffff:640d:4838
100.13.72.57 0:0:0:0:0:ffff:640d:4839
100.13.72.58 0:0:0:0:0:ffff:640d:483a
100.13.72.59 0:0:0:0:0:ffff:640d:483b
100.13.72.60 0:0:0:0:0:ffff:640d:483c


100.13.72.61 0:0:0:0:0:ffff:640d:483d
100.13.72.62 0:0:0:0:0:ffff:640d:483e
100.13.72.63 0:0:0:0:0:ffff:640d:483f
100.13.72.64 0:0:0:0:0:ffff:640d:4840
100.13.72.65 0:0:0:0:0:ffff:640d:4841
100.13.72.66 0:0:0:0:0:ffff:640d:4842
100.13.72.67 0:0:0:0:0:ffff:640d:4843
100.13.72.68 0:0:0:0:0:ffff:640d:4844
100.13.72.69 0:0:0:0:0:ffff:640d:4845
100.13.72.70 0:0:0:0:0:ffff:640d:4846
100.13.72.71 0:0:0:0:0:ffff:640d:4847
100.13.72.72 0:0:0:0:0:ffff:640d:4848
100.13.72.73 0:0:0:0:0:ffff:640d:4849
100.13.72.74 0:0:0:0:0:ffff:640d:484a
100.13.72.75 0:0:0:0:0:ffff:640d:484b
100.13.72.76 0:0:0:0:0:ffff:640d:484c
100.13.72.77 0:0:0:0:0:ffff:640d:484d
100.13.72.78 0:0:0:0:0:ffff:640d:484e
100.13.72.79 0:0:0:0:0:ffff:640d:484f
100.13.72.80 0:0:0:0:0:ffff:640d:4850
100.13.72.81 0:0:0:0:0:ffff:640d:4851
100.13.72.82 0:0:0:0:0:ffff:640d:4852
100.13.72.83 0:0:0:0:0:ffff:640d:4853
100.13.72.84 0:0:0:0:0:ffff:640d:4854
100.13.72.85 0:0:0:0:0:ffff:640d:4855
100.13.72.86 0:0:0:0:0:ffff:640d:4856
100.13.72.87 0:0:0:0:0:ffff:640d:4857
100.13.72.88 0:0:0:0:0:ffff:640d:4858
100.13.72.89 0:0:0:0:0:ffff:640d:4859
100.13.72.90 0:0:0:0:0:ffff:640d:485a
100.13.72.91 0:0:0:0:0:ffff:640d:485b
100.13.72.92 0:0:0:0:0:ffff:640d:485c
100.13.72.93 0:0:0:0:0:ffff:640d:485d
100.13.72.94 0:0:0:0:0:ffff:640d:485e
100.13.72.95 0:0:0:0:0:ffff:640d:485f
100.13.72.96 0:0:0:0:0:ffff:640d:4860
100.13.72.97 0:0:0:0:0:ffff:640d:4861
100.13.72.98 0:0:0:0:0:ffff:640d:4862
100.13.72.99 0:0:0:0:0:ffff:640d:4863
100.13.72.100 0:0:0:0:0:ffff:640d:4864
100.13.72.101 0:0:0:0:0:ffff:640d:4865
100.13.72.102 0:0:0:0:0:ffff:640d:4866
100.13.72.103 0:0:0:0:0:ffff:640d:4867
100.13.72.104 0:0:0:0:0:ffff:640d:4868
100.13.72.105 0:0:0:0:0:ffff:640d:4869
100.13.72.106 0:0:0:0:0:ffff:640d:486a
100.13.72.107 0:0:0:0:0:ffff:640d:486b
100.13.72.108 0:0:0:0:0:ffff:640d:486c
100.13.72.109 0:0:0:0:0:ffff:640d:486d
100.13.72.110 0:0:0:0:0:ffff:640d:486e
100.13.72.111 0:0:0:0:0:ffff:640d:486f
100.13.72.112 0:0:0:0:0:ffff:640d:4870
100.13.72.113 0:0:0:0:0:ffff:640d:4871
100.13.72.114 0:0:0:0:0:ffff:640d:4872
100.13.72.115 0:0:0:0:0:ffff:640d:4873
100.13.72.116 0:0:0:0:0:ffff:640d:4874
100.13.72.117 0:0:0:0:0:ffff:640d:4875
100.13.72.118 0:0:0:0:0:ffff:640d:4876
100.13.72.119 0:0:0:0:0:ffff:640d:4877
100.13.72.120 0:0:0:0:0:ffff:640d:4878


100.13.72.121 0:0:0:0:0:ffff:640d:4879
100.13.72.122 0:0:0:0:0:ffff:640d:487a
100.13.72.123 0:0:0:0:0:ffff:640d:487b
100.13.72.124 0:0:0:0:0:ffff:640d:487c
100.13.72.125 0:0:0:0:0:ffff:640d:487d
100.13.72.126 0:0:0:0:0:ffff:640d:487e
100.13.72.127 0:0:0:0:0:ffff:640d:487f
100.13.72.128 0:0:0:0:0:ffff:640d:4880
100.13.72.129 0:0:0:0:0:ffff:640d:4881
100.13.72.130 0:0:0:0:0:ffff:640d:4882
100.13.72.131 0:0:0:0:0:ffff:640d:4883
100.13.72.132 0:0:0:0:0:ffff:640d:4884
100.13.72.133 0:0:0:0:0:ffff:640d:4885
100.13.72.134 0:0:0:0:0:ffff:640d:4886
100.13.72.135 0:0:0:0:0:ffff:640d:4887
100.13.72.136 0:0:0:0:0:ffff:640d:4888
100.13.72.137 0:0:0:0:0:ffff:640d:4889
100.13.72.138 0:0:0:0:0:ffff:640d:488a
100.13.72.139 0:0:0:0:0:ffff:640d:488b
100.13.72.140 0:0:0:0:0:ffff:640d:488c
100.13.72.141 0:0:0:0:0:ffff:640d:488d
100.13.72.142 0:0:0:0:0:ffff:640d:488e
100.13.72.143 0:0:0:0:0:ffff:640d:488f
100.13.72.144 0:0:0:0:0:ffff:640d:4890
100.13.72.145 0:0:0:0:0:ffff:640d:4891
100.13.72.146 0:0:0:0:0:ffff:640d:4892
100.13.72.147 0:0:0:0:0:ffff:640d:4893
100.13.72.148 0:0:0:0:0:ffff:640d:4894
100.13.72.149 0:0:0:0:0:ffff:640d:4895
100.13.72.150 0:0:0:0:0:ffff:640d:4896
100.13.72.151 0:0:0:0:0:ffff:640d:4897
100.13.72.152 0:0:0:0:0:ffff:640d:4898
100.13.72.153 0:0:0:0:0:ffff:640d:4899
100.13.72.154 0:0:0:0:0:ffff:640d:489a
100.13.72.155 0:0:0:0:0:ffff:640d:489b
100.13.72.156 0:0:0:0:0:ffff:640d:489c
100.13.72.157 0:0:0:0:0:ffff:640d:489d
100.13.72.158 0:0:0:0:0:ffff:640d:489e
100.13.72.159 0:0:0:0:0:ffff:640d:489f
100.13.72.160 0:0:0:0:0:ffff:640d:48a0
100.13.72.161 0:0:0:0:0:ffff:640d:48a1
100.13.72.162 0:0:0:0:0:ffff:640d:48a2
100.13.72.163 0:0:0:0:0:ffff:640d:48a3
100.13.72.164 0:0:0:0:0:ffff:640d:48a4
100.13.72.165 0:0:0:0:0:ffff:640d:48a5
100.13.72.166 0:0:0:0:0:ffff:640d:48a6
100.13.72.167 0:0:0:0:0:ffff:640d:48a7
100.13.72.168 0:0:0:0:0:ffff:640d:48a8
100.13.72.169 0:0:0:0:0:ffff:640d:48a9
100.13.72.170 0:0:0:0:0:ffff:640d:48aa
100.13.72.171 0:0:0:0:0:ffff:640d:48ab
100.13.72.172 0:0:0:0:0:ffff:640d:48ac
100.13.72.173 0:0:0:0:0:ffff:640d:48ad
100.13.72.174 0:0:0:0:0:ffff:640d:48ae
100.13.72.175 0:0:0:0:0:ffff:640d:48af
100.13.72.176 0:0:0:0:0:ffff:640d:48b0
100.13.72.177 0:0:0:0:0:ffff:640d:48b1
100.13.72.178 0:0:0:0:0:ffff:640d:48b2
100.13.72.179 0:0:0:0:0:ffff:640d:48b3
100.13.72.180 0:0:0:0:0:ffff:640d:48b4


100.13.72.181 0:0:0:0:0:ffff:640d:48b5
100.13.72.182 0:0:0:0:0:ffff:640d:48b6
100.13.72.183 0:0:0:0:0:ffff:640d:48b7
100.13.72.184 0:0:0:0:0:ffff:640d:48b8
100.13.72.185 0:0:0:0:0:ffff:640d:48b9
100.13.72.186 0:0:0:0:0:ffff:640d:48ba
100.13.72.187 0:0:0:0:0:ffff:640d:48bb
100.13.72.188 0:0:0:0:0:ffff:640d:48bc
100.13.72.189 0:0:0:0:0:ffff:640d:48bd
100.13.72.190 0:0:0:0:0:ffff:640d:48be
100.13.72.191 0:0:0:0:0:ffff:640d:48bf
100.13.72.192 0:0:0:0:0:ffff:640d:48c0
100.13.72.193 0:0:0:0:0:ffff:640d:48c1
100.13.72.194 0:0:0:0:0:ffff:640d:48c2
100.13.72.195 0:0:0:0:0:ffff:640d:48c3
100.13.72.196 0:0:0:0:0:ffff:640d:48c4
100.13.72.197 0:0:0:0:0:ffff:640d:48c5
100.13.72.198 0:0:0:0:0:ffff:640d:48c6
100.13.72.199 0:0:0:0:0:ffff:640d:48c7
100.13.72.200 0:0:0:0:0:ffff:640d:48c8
100.13.72.201 0:0:0:0:0:ffff:640d:48c9
100.13.72.202 0:0:0:0:0:ffff:640d:48ca
100.13.72.203 0:0:0:0:0:ffff:640d:48cb
100.13.72.204 0:0:0:0:0:ffff:640d:48cc
100.13.72.205 0:0:0:0:0:ffff:640d:48cd
100.13.72.206 0:0:0:0:0:ffff:640d:48ce
100.13.72.207 0:0:0:0:0:ffff:640d:48cf
100.13.72.208 0:0:0:0:0:ffff:640d:48d0
100.13.72.209 0:0:0:0:0:ffff:640d:48d1
100.13.72.210 0:0:0:0:0:ffff:640d:48d2
100.13.72.211 0:0:0:0:0:ffff:640d:48d3
100.13.72.212 0:0:0:0:0:ffff:640d:48d4
100.13.72.213 0:0:0:0:0:ffff:640d:48d5
100.13.72.214 0:0:0:0:0:ffff:640d:48d6
100.13.72.215 0:0:0:0:0:ffff:640d:48d7
100.13.72.216 0:0:0:0:0:ffff:640d:48d8
100.13.72.217 0:0:0:0:0:ffff:640d:48d9
100.13.72.218 0:0:0:0:0:ffff:640d:48da
100.13.72.219 0:0:0:0:0:ffff:640d:48db
100.13.72.220 0:0:0:0:0:ffff:640d:48dc
100.13.72.221 0:0:0:0:0:ffff:640d:48dd
100.13.72.222 0:0:0:0:0:ffff:640d:48de
100.13.72.223 0:0:0:0:0:ffff:640d:48df
100.13.72.224 0:0:0:0:0:ffff:640d:48e0
100.13.72.225 0:0:0:0:0:ffff:640d:48e1
100.13.72.226 0:0:0:0:0:ffff:640d:48e2
100.13.72.227 0:0:0:0:0:ffff:640d:48e3
100.13.72.228 0:0:0:0:0:ffff:640d:48e4
100.13.72.229 0:0:0:0:0:ffff:640d:48e5
100.13.72.230 0:0:0:0:0:ffff:640d:48e6
100.13.72.231 0:0:0:0:0:ffff:640d:48e7
100.13.72.232 0:0:0:0:0:ffff:640d:48e8
100.13.72.233 0:0:0:0:0:ffff:640d:48e9
100.13.72.234 0:0:0:0:0:ffff:640d:48ea
100.13.72.235 0:0:0:0:0:ffff:640d:48eb
100.13.72.236 0:0:0:0:0:ffff:640d:48ec
100.13.72.237 0:0:0:0:0:ffff:640d:48ed
100.13.72.238 0:0:0:0:0:ffff:640d:48ee
100.13.72.239 0:0:0:0:0:ffff:640d:48ef
100.13.72.240 0:0:0:0:0:ffff:640d:48f0
100.13.72.241 0:0:0:0:0:ffff:640d:48f1
100.13.72.242 0:0:0:0:0:ffff:640d:48f2
100.13.72.243 0:0:0:0:0:ffff:640d:48f3
100.13.72.244 0:0:0:0:0:ffff:640d:48f4
100.13.72.245 0:0:0:0:0:ffff:640d:48f5
100.13.72.246 0:0:0:0:0:ffff:640d:48f6
100.13.72.247 0:0:0:0:0:ffff:640d:48f7
100.13.72.248 0:0:0:0:0:ffff:640d:48f8
100.13.72.249 0:0:0:0:0:ffff:640d:48f9
100.13.72.250 0:0:0:0:0:ffff:640d:48fa
100.13.72.251 0:0:0:0:0:ffff:640d:48fb
100.13.72.252 0:0:0:0:0:ffff:640d:48fc
100.13.72.253 0:0:0:0:0:ffff:640d:48fd
100.13.72.254 0:0:0:0:0:ffff:640d:48fe
100.13.72.255 0:0:0:0:0:ffff:640d: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.