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
100.3.8.1 0:0:0:0:0:ffff:6403:801
100.3.8.2 0:0:0:0:0:ffff:6403:802
100.3.8.3 0:0:0:0:0:ffff:6403:803
100.3.8.4 0:0:0:0:0:ffff:6403:804
100.3.8.5 0:0:0:0:0:ffff:6403:805
100.3.8.6 0:0:0:0:0:ffff:6403:806
100.3.8.7 0:0:0:0:0:ffff:6403:807
100.3.8.8 0:0:0:0:0:ffff:6403:808
100.3.8.9 0:0:0:0:0:ffff:6403:809
100.3.8.10 0:0:0:0:0:ffff:6403:80a
100.3.8.11 0:0:0:0:0:ffff:6403:80b
100.3.8.12 0:0:0:0:0:ffff:6403:80c
100.3.8.13 0:0:0:0:0:ffff:6403:80d
100.3.8.14 0:0:0:0:0:ffff:6403:80e
100.3.8.15 0:0:0:0:0:ffff:6403:80f
100.3.8.16 0:0:0:0:0:ffff:6403:810
100.3.8.17 0:0:0:0:0:ffff:6403:811
100.3.8.18 0:0:0:0:0:ffff:6403:812
100.3.8.19 0:0:0:0:0:ffff:6403:813
100.3.8.20 0:0:0:0:0:ffff:6403:814
100.3.8.21 0:0:0:0:0:ffff:6403:815
100.3.8.22 0:0:0:0:0:ffff:6403:816
100.3.8.23 0:0:0:0:0:ffff:6403:817
100.3.8.24 0:0:0:0:0:ffff:6403:818
100.3.8.25 0:0:0:0:0:ffff:6403:819
100.3.8.26 0:0:0:0:0:ffff:6403:81a
100.3.8.27 0:0:0:0:0:ffff:6403:81b
100.3.8.28 0:0:0:0:0:ffff:6403:81c
100.3.8.29 0:0:0:0:0:ffff:6403:81d
100.3.8.30 0:0:0:0:0:ffff:6403:81e
100.3.8.31 0:0:0:0:0:ffff:6403:81f
100.3.8.32 0:0:0:0:0:ffff:6403:820
100.3.8.33 0:0:0:0:0:ffff:6403:821
100.3.8.34 0:0:0:0:0:ffff:6403:822
100.3.8.35 0:0:0:0:0:ffff:6403:823
100.3.8.36 0:0:0:0:0:ffff:6403:824
100.3.8.37 0:0:0:0:0:ffff:6403:825
100.3.8.38 0:0:0:0:0:ffff:6403:826
100.3.8.39 0:0:0:0:0:ffff:6403:827
100.3.8.40 0:0:0:0:0:ffff:6403:828
100.3.8.41 0:0:0:0:0:ffff:6403:829
100.3.8.42 0:0:0:0:0:ffff:6403:82a
100.3.8.43 0:0:0:0:0:ffff:6403:82b
100.3.8.44 0:0:0:0:0:ffff:6403:82c
100.3.8.45 0:0:0:0:0:ffff:6403:82d
100.3.8.46 0:0:0:0:0:ffff:6403:82e
100.3.8.47 0:0:0:0:0:ffff:6403:82f
100.3.8.48 0:0:0:0:0:ffff:6403:830
100.3.8.49 0:0:0:0:0:ffff:6403:831
100.3.8.50 0:0:0:0:0:ffff:6403:832
100.3.8.51 0:0:0:0:0:ffff:6403:833
100.3.8.52 0:0:0:0:0:ffff:6403:834
100.3.8.53 0:0:0:0:0:ffff:6403:835
100.3.8.54 0:0:0:0:0:ffff:6403:836
100.3.8.55 0:0:0:0:0:ffff:6403:837
100.3.8.56 0:0:0:0:0:ffff:6403:838
100.3.8.57 0:0:0:0:0:ffff:6403:839
100.3.8.58 0:0:0:0:0:ffff:6403:83a
100.3.8.59 0:0:0:0:0:ffff:6403:83b
100.3.8.60 0:0:0:0:0:ffff:6403:83c


100.3.8.61 0:0:0:0:0:ffff:6403:83d
100.3.8.62 0:0:0:0:0:ffff:6403:83e
100.3.8.63 0:0:0:0:0:ffff:6403:83f
100.3.8.64 0:0:0:0:0:ffff:6403:840
100.3.8.65 0:0:0:0:0:ffff:6403:841
100.3.8.66 0:0:0:0:0:ffff:6403:842
100.3.8.67 0:0:0:0:0:ffff:6403:843
100.3.8.68 0:0:0:0:0:ffff:6403:844
100.3.8.69 0:0:0:0:0:ffff:6403:845
100.3.8.70 0:0:0:0:0:ffff:6403:846
100.3.8.71 0:0:0:0:0:ffff:6403:847
100.3.8.72 0:0:0:0:0:ffff:6403:848
100.3.8.73 0:0:0:0:0:ffff:6403:849
100.3.8.74 0:0:0:0:0:ffff:6403:84a
100.3.8.75 0:0:0:0:0:ffff:6403:84b
100.3.8.76 0:0:0:0:0:ffff:6403:84c
100.3.8.77 0:0:0:0:0:ffff:6403:84d
100.3.8.78 0:0:0:0:0:ffff:6403:84e
100.3.8.79 0:0:0:0:0:ffff:6403:84f
100.3.8.80 0:0:0:0:0:ffff:6403:850
100.3.8.81 0:0:0:0:0:ffff:6403:851
100.3.8.82 0:0:0:0:0:ffff:6403:852
100.3.8.83 0:0:0:0:0:ffff:6403:853
100.3.8.84 0:0:0:0:0:ffff:6403:854
100.3.8.85 0:0:0:0:0:ffff:6403:855
100.3.8.86 0:0:0:0:0:ffff:6403:856
100.3.8.87 0:0:0:0:0:ffff:6403:857
100.3.8.88 0:0:0:0:0:ffff:6403:858
100.3.8.89 0:0:0:0:0:ffff:6403:859
100.3.8.90 0:0:0:0:0:ffff:6403:85a
100.3.8.91 0:0:0:0:0:ffff:6403:85b
100.3.8.92 0:0:0:0:0:ffff:6403:85c
100.3.8.93 0:0:0:0:0:ffff:6403:85d
100.3.8.94 0:0:0:0:0:ffff:6403:85e
100.3.8.95 0:0:0:0:0:ffff:6403:85f
100.3.8.96 0:0:0:0:0:ffff:6403:860
100.3.8.97 0:0:0:0:0:ffff:6403:861
100.3.8.98 0:0:0:0:0:ffff:6403:862
100.3.8.99 0:0:0:0:0:ffff:6403:863
100.3.8.100 0:0:0:0:0:ffff:6403:864
100.3.8.101 0:0:0:0:0:ffff:6403:865
100.3.8.102 0:0:0:0:0:ffff:6403:866
100.3.8.103 0:0:0:0:0:ffff:6403:867
100.3.8.104 0:0:0:0:0:ffff:6403:868
100.3.8.105 0:0:0:0:0:ffff:6403:869
100.3.8.106 0:0:0:0:0:ffff:6403:86a
100.3.8.107 0:0:0:0:0:ffff:6403:86b
100.3.8.108 0:0:0:0:0:ffff:6403:86c
100.3.8.109 0:0:0:0:0:ffff:6403:86d
100.3.8.110 0:0:0:0:0:ffff:6403:86e
100.3.8.111 0:0:0:0:0:ffff:6403:86f
100.3.8.112 0:0:0:0:0:ffff:6403:870
100.3.8.113 0:0:0:0:0:ffff:6403:871
100.3.8.114 0:0:0:0:0:ffff:6403:872
100.3.8.115 0:0:0:0:0:ffff:6403:873
100.3.8.116 0:0:0:0:0:ffff:6403:874
100.3.8.117 0:0:0:0:0:ffff:6403:875
100.3.8.118 0:0:0:0:0:ffff:6403:876
100.3.8.119 0:0:0:0:0:ffff:6403:877
100.3.8.120 0:0:0:0:0:ffff:6403:878


100.3.8.121 0:0:0:0:0:ffff:6403:879
100.3.8.122 0:0:0:0:0:ffff:6403:87a
100.3.8.123 0:0:0:0:0:ffff:6403:87b
100.3.8.124 0:0:0:0:0:ffff:6403:87c
100.3.8.125 0:0:0:0:0:ffff:6403:87d
100.3.8.126 0:0:0:0:0:ffff:6403:87e
100.3.8.127 0:0:0:0:0:ffff:6403:87f
100.3.8.128 0:0:0:0:0:ffff:6403:880
100.3.8.129 0:0:0:0:0:ffff:6403:881
100.3.8.130 0:0:0:0:0:ffff:6403:882
100.3.8.131 0:0:0:0:0:ffff:6403:883
100.3.8.132 0:0:0:0:0:ffff:6403:884
100.3.8.133 0:0:0:0:0:ffff:6403:885
100.3.8.134 0:0:0:0:0:ffff:6403:886
100.3.8.135 0:0:0:0:0:ffff:6403:887
100.3.8.136 0:0:0:0:0:ffff:6403:888
100.3.8.137 0:0:0:0:0:ffff:6403:889
100.3.8.138 0:0:0:0:0:ffff:6403:88a
100.3.8.139 0:0:0:0:0:ffff:6403:88b
100.3.8.140 0:0:0:0:0:ffff:6403:88c
100.3.8.141 0:0:0:0:0:ffff:6403:88d
100.3.8.142 0:0:0:0:0:ffff:6403:88e
100.3.8.143 0:0:0:0:0:ffff:6403:88f
100.3.8.144 0:0:0:0:0:ffff:6403:890
100.3.8.145 0:0:0:0:0:ffff:6403:891
100.3.8.146 0:0:0:0:0:ffff:6403:892
100.3.8.147 0:0:0:0:0:ffff:6403:893
100.3.8.148 0:0:0:0:0:ffff:6403:894
100.3.8.149 0:0:0:0:0:ffff:6403:895
100.3.8.150 0:0:0:0:0:ffff:6403:896
100.3.8.151 0:0:0:0:0:ffff:6403:897
100.3.8.152 0:0:0:0:0:ffff:6403:898
100.3.8.153 0:0:0:0:0:ffff:6403:899
100.3.8.154 0:0:0:0:0:ffff:6403:89a
100.3.8.155 0:0:0:0:0:ffff:6403:89b
100.3.8.156 0:0:0:0:0:ffff:6403:89c
100.3.8.157 0:0:0:0:0:ffff:6403:89d
100.3.8.158 0:0:0:0:0:ffff:6403:89e
100.3.8.159 0:0:0:0:0:ffff:6403:89f
100.3.8.160 0:0:0:0:0:ffff:6403:8a0
100.3.8.161 0:0:0:0:0:ffff:6403:8a1
100.3.8.162 0:0:0:0:0:ffff:6403:8a2
100.3.8.163 0:0:0:0:0:ffff:6403:8a3
100.3.8.164 0:0:0:0:0:ffff:6403:8a4
100.3.8.165 0:0:0:0:0:ffff:6403:8a5
100.3.8.166 0:0:0:0:0:ffff:6403:8a6
100.3.8.167 0:0:0:0:0:ffff:6403:8a7
100.3.8.168 0:0:0:0:0:ffff:6403:8a8
100.3.8.169 0:0:0:0:0:ffff:6403:8a9
100.3.8.170 0:0:0:0:0:ffff:6403:8aa
100.3.8.171 0:0:0:0:0:ffff:6403:8ab
100.3.8.172 0:0:0:0:0:ffff:6403:8ac
100.3.8.173 0:0:0:0:0:ffff:6403:8ad
100.3.8.174 0:0:0:0:0:ffff:6403:8ae
100.3.8.175 0:0:0:0:0:ffff:6403:8af
100.3.8.176 0:0:0:0:0:ffff:6403:8b0
100.3.8.177 0:0:0:0:0:ffff:6403:8b1
100.3.8.178 0:0:0:0:0:ffff:6403:8b2
100.3.8.179 0:0:0:0:0:ffff:6403:8b3
100.3.8.180 0:0:0:0:0:ffff:6403:8b4


100.3.8.181 0:0:0:0:0:ffff:6403:8b5
100.3.8.182 0:0:0:0:0:ffff:6403:8b6
100.3.8.183 0:0:0:0:0:ffff:6403:8b7
100.3.8.184 0:0:0:0:0:ffff:6403:8b8
100.3.8.185 0:0:0:0:0:ffff:6403:8b9
100.3.8.186 0:0:0:0:0:ffff:6403:8ba
100.3.8.187 0:0:0:0:0:ffff:6403:8bb
100.3.8.188 0:0:0:0:0:ffff:6403:8bc
100.3.8.189 0:0:0:0:0:ffff:6403:8bd
100.3.8.190 0:0:0:0:0:ffff:6403:8be
100.3.8.191 0:0:0:0:0:ffff:6403:8bf
100.3.8.192 0:0:0:0:0:ffff:6403:8c0
100.3.8.193 0:0:0:0:0:ffff:6403:8c1
100.3.8.194 0:0:0:0:0:ffff:6403:8c2
100.3.8.195 0:0:0:0:0:ffff:6403:8c3
100.3.8.196 0:0:0:0:0:ffff:6403:8c4
100.3.8.197 0:0:0:0:0:ffff:6403:8c5
100.3.8.198 0:0:0:0:0:ffff:6403:8c6
100.3.8.199 0:0:0:0:0:ffff:6403:8c7
100.3.8.200 0:0:0:0:0:ffff:6403:8c8
100.3.8.201 0:0:0:0:0:ffff:6403:8c9
100.3.8.202 0:0:0:0:0:ffff:6403:8ca
100.3.8.203 0:0:0:0:0:ffff:6403:8cb
100.3.8.204 0:0:0:0:0:ffff:6403:8cc
100.3.8.205 0:0:0:0:0:ffff:6403:8cd
100.3.8.206 0:0:0:0:0:ffff:6403:8ce
100.3.8.207 0:0:0:0:0:ffff:6403:8cf
100.3.8.208 0:0:0:0:0:ffff:6403:8d0
100.3.8.209 0:0:0:0:0:ffff:6403:8d1
100.3.8.210 0:0:0:0:0:ffff:6403:8d2
100.3.8.211 0:0:0:0:0:ffff:6403:8d3
100.3.8.212 0:0:0:0:0:ffff:6403:8d4
100.3.8.213 0:0:0:0:0:ffff:6403:8d5
100.3.8.214 0:0:0:0:0:ffff:6403:8d6
100.3.8.215 0:0:0:0:0:ffff:6403:8d7
100.3.8.216 0:0:0:0:0:ffff:6403:8d8
100.3.8.217 0:0:0:0:0:ffff:6403:8d9
100.3.8.218 0:0:0:0:0:ffff:6403:8da
100.3.8.219 0:0:0:0:0:ffff:6403:8db
100.3.8.220 0:0:0:0:0:ffff:6403:8dc
100.3.8.221 0:0:0:0:0:ffff:6403:8dd
100.3.8.222 0:0:0:0:0:ffff:6403:8de
100.3.8.223 0:0:0:0:0:ffff:6403:8df
100.3.8.224 0:0:0:0:0:ffff:6403:8e0
100.3.8.225 0:0:0:0:0:ffff:6403:8e1
100.3.8.226 0:0:0:0:0:ffff:6403:8e2
100.3.8.227 0:0:0:0:0:ffff:6403:8e3
100.3.8.228 0:0:0:0:0:ffff:6403:8e4
100.3.8.229 0:0:0:0:0:ffff:6403:8e5
100.3.8.230 0:0:0:0:0:ffff:6403:8e6
100.3.8.231 0:0:0:0:0:ffff:6403:8e7
100.3.8.232 0:0:0:0:0:ffff:6403:8e8
100.3.8.233 0:0:0:0:0:ffff:6403:8e9
100.3.8.234 0:0:0:0:0:ffff:6403:8ea
100.3.8.235 0:0:0:0:0:ffff:6403:8eb
100.3.8.236 0:0:0:0:0:ffff:6403:8ec
100.3.8.237 0:0:0:0:0:ffff:6403:8ed
100.3.8.238 0:0:0:0:0:ffff:6403:8ee
100.3.8.239 0:0:0:0:0:ffff:6403:8ef
100.3.8.240 0:0:0:0:0:ffff:6403:8f0
100.3.8.241 0:0:0:0:0:ffff:6403:8f1
100.3.8.242 0:0:0:0:0:ffff:6403:8f2
100.3.8.243 0:0:0:0:0:ffff:6403:8f3
100.3.8.244 0:0:0:0:0:ffff:6403:8f4
100.3.8.245 0:0:0:0:0:ffff:6403:8f5
100.3.8.246 0:0:0:0:0:ffff:6403:8f6
100.3.8.247 0:0:0:0:0:ffff:6403:8f7
100.3.8.248 0:0:0:0:0:ffff:6403:8f8
100.3.8.249 0:0:0:0:0:ffff:6403:8f9
100.3.8.250 0:0:0:0:0:ffff:6403:8fa
100.3.8.251 0:0:0:0:0:ffff:6403:8fb
100.3.8.252 0:0:0:0:0:ffff:6403:8fc
100.3.8.253 0:0:0:0:0:ffff:6403:8fd
100.3.8.254 0:0:0:0:0:ffff:6403:8fe
100.3.8.255 0:0:0:0:0:ffff:6403:8ff


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.