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
128.7.40.1 0:0:0:0:0:ffff:8007:2801
128.7.40.2 0:0:0:0:0:ffff:8007:2802
128.7.40.3 0:0:0:0:0:ffff:8007:2803
128.7.40.4 0:0:0:0:0:ffff:8007:2804
128.7.40.5 0:0:0:0:0:ffff:8007:2805
128.7.40.6 0:0:0:0:0:ffff:8007:2806
128.7.40.7 0:0:0:0:0:ffff:8007:2807
128.7.40.8 0:0:0:0:0:ffff:8007:2808
128.7.40.9 0:0:0:0:0:ffff:8007:2809
128.7.40.10 0:0:0:0:0:ffff:8007:280a
128.7.40.11 0:0:0:0:0:ffff:8007:280b
128.7.40.12 0:0:0:0:0:ffff:8007:280c
128.7.40.13 0:0:0:0:0:ffff:8007:280d
128.7.40.14 0:0:0:0:0:ffff:8007:280e
128.7.40.15 0:0:0:0:0:ffff:8007:280f
128.7.40.16 0:0:0:0:0:ffff:8007:2810
128.7.40.17 0:0:0:0:0:ffff:8007:2811
128.7.40.18 0:0:0:0:0:ffff:8007:2812
128.7.40.19 0:0:0:0:0:ffff:8007:2813
128.7.40.20 0:0:0:0:0:ffff:8007:2814
128.7.40.21 0:0:0:0:0:ffff:8007:2815
128.7.40.22 0:0:0:0:0:ffff:8007:2816
128.7.40.23 0:0:0:0:0:ffff:8007:2817
128.7.40.24 0:0:0:0:0:ffff:8007:2818
128.7.40.25 0:0:0:0:0:ffff:8007:2819
128.7.40.26 0:0:0:0:0:ffff:8007:281a
128.7.40.27 0:0:0:0:0:ffff:8007:281b
128.7.40.28 0:0:0:0:0:ffff:8007:281c
128.7.40.29 0:0:0:0:0:ffff:8007:281d
128.7.40.30 0:0:0:0:0:ffff:8007:281e
128.7.40.31 0:0:0:0:0:ffff:8007:281f
128.7.40.32 0:0:0:0:0:ffff:8007:2820
128.7.40.33 0:0:0:0:0:ffff:8007:2821
128.7.40.34 0:0:0:0:0:ffff:8007:2822
128.7.40.35 0:0:0:0:0:ffff:8007:2823
128.7.40.36 0:0:0:0:0:ffff:8007:2824
128.7.40.37 0:0:0:0:0:ffff:8007:2825
128.7.40.38 0:0:0:0:0:ffff:8007:2826
128.7.40.39 0:0:0:0:0:ffff:8007:2827
128.7.40.40 0:0:0:0:0:ffff:8007:2828
128.7.40.41 0:0:0:0:0:ffff:8007:2829
128.7.40.42 0:0:0:0:0:ffff:8007:282a
128.7.40.43 0:0:0:0:0:ffff:8007:282b
128.7.40.44 0:0:0:0:0:ffff:8007:282c
128.7.40.45 0:0:0:0:0:ffff:8007:282d
128.7.40.46 0:0:0:0:0:ffff:8007:282e
128.7.40.47 0:0:0:0:0:ffff:8007:282f
128.7.40.48 0:0:0:0:0:ffff:8007:2830
128.7.40.49 0:0:0:0:0:ffff:8007:2831
128.7.40.50 0:0:0:0:0:ffff:8007:2832
128.7.40.51 0:0:0:0:0:ffff:8007:2833
128.7.40.52 0:0:0:0:0:ffff:8007:2834
128.7.40.53 0:0:0:0:0:ffff:8007:2835
128.7.40.54 0:0:0:0:0:ffff:8007:2836
128.7.40.55 0:0:0:0:0:ffff:8007:2837
128.7.40.56 0:0:0:0:0:ffff:8007:2838
128.7.40.57 0:0:0:0:0:ffff:8007:2839
128.7.40.58 0:0:0:0:0:ffff:8007:283a
128.7.40.59 0:0:0:0:0:ffff:8007:283b
128.7.40.60 0:0:0:0:0:ffff:8007:283c


128.7.40.61 0:0:0:0:0:ffff:8007:283d
128.7.40.62 0:0:0:0:0:ffff:8007:283e
128.7.40.63 0:0:0:0:0:ffff:8007:283f
128.7.40.64 0:0:0:0:0:ffff:8007:2840
128.7.40.65 0:0:0:0:0:ffff:8007:2841
128.7.40.66 0:0:0:0:0:ffff:8007:2842
128.7.40.67 0:0:0:0:0:ffff:8007:2843
128.7.40.68 0:0:0:0:0:ffff:8007:2844
128.7.40.69 0:0:0:0:0:ffff:8007:2845
128.7.40.70 0:0:0:0:0:ffff:8007:2846
128.7.40.71 0:0:0:0:0:ffff:8007:2847
128.7.40.72 0:0:0:0:0:ffff:8007:2848
128.7.40.73 0:0:0:0:0:ffff:8007:2849
128.7.40.74 0:0:0:0:0:ffff:8007:284a
128.7.40.75 0:0:0:0:0:ffff:8007:284b
128.7.40.76 0:0:0:0:0:ffff:8007:284c
128.7.40.77 0:0:0:0:0:ffff:8007:284d
128.7.40.78 0:0:0:0:0:ffff:8007:284e
128.7.40.79 0:0:0:0:0:ffff:8007:284f
128.7.40.80 0:0:0:0:0:ffff:8007:2850
128.7.40.81 0:0:0:0:0:ffff:8007:2851
128.7.40.82 0:0:0:0:0:ffff:8007:2852
128.7.40.83 0:0:0:0:0:ffff:8007:2853
128.7.40.84 0:0:0:0:0:ffff:8007:2854
128.7.40.85 0:0:0:0:0:ffff:8007:2855
128.7.40.86 0:0:0:0:0:ffff:8007:2856
128.7.40.87 0:0:0:0:0:ffff:8007:2857
128.7.40.88 0:0:0:0:0:ffff:8007:2858
128.7.40.89 0:0:0:0:0:ffff:8007:2859
128.7.40.90 0:0:0:0:0:ffff:8007:285a
128.7.40.91 0:0:0:0:0:ffff:8007:285b
128.7.40.92 0:0:0:0:0:ffff:8007:285c
128.7.40.93 0:0:0:0:0:ffff:8007:285d
128.7.40.94 0:0:0:0:0:ffff:8007:285e
128.7.40.95 0:0:0:0:0:ffff:8007:285f
128.7.40.96 0:0:0:0:0:ffff:8007:2860
128.7.40.97 0:0:0:0:0:ffff:8007:2861
128.7.40.98 0:0:0:0:0:ffff:8007:2862
128.7.40.99 0:0:0:0:0:ffff:8007:2863
128.7.40.100 0:0:0:0:0:ffff:8007:2864
128.7.40.101 0:0:0:0:0:ffff:8007:2865
128.7.40.102 0:0:0:0:0:ffff:8007:2866
128.7.40.103 0:0:0:0:0:ffff:8007:2867
128.7.40.104 0:0:0:0:0:ffff:8007:2868
128.7.40.105 0:0:0:0:0:ffff:8007:2869
128.7.40.106 0:0:0:0:0:ffff:8007:286a
128.7.40.107 0:0:0:0:0:ffff:8007:286b
128.7.40.108 0:0:0:0:0:ffff:8007:286c
128.7.40.109 0:0:0:0:0:ffff:8007:286d
128.7.40.110 0:0:0:0:0:ffff:8007:286e
128.7.40.111 0:0:0:0:0:ffff:8007:286f
128.7.40.112 0:0:0:0:0:ffff:8007:2870
128.7.40.113 0:0:0:0:0:ffff:8007:2871
128.7.40.114 0:0:0:0:0:ffff:8007:2872
128.7.40.115 0:0:0:0:0:ffff:8007:2873
128.7.40.116 0:0:0:0:0:ffff:8007:2874
128.7.40.117 0:0:0:0:0:ffff:8007:2875
128.7.40.118 0:0:0:0:0:ffff:8007:2876
128.7.40.119 0:0:0:0:0:ffff:8007:2877
128.7.40.120 0:0:0:0:0:ffff:8007:2878


128.7.40.121 0:0:0:0:0:ffff:8007:2879
128.7.40.122 0:0:0:0:0:ffff:8007:287a
128.7.40.123 0:0:0:0:0:ffff:8007:287b
128.7.40.124 0:0:0:0:0:ffff:8007:287c
128.7.40.125 0:0:0:0:0:ffff:8007:287d
128.7.40.126 0:0:0:0:0:ffff:8007:287e
128.7.40.127 0:0:0:0:0:ffff:8007:287f
128.7.40.128 0:0:0:0:0:ffff:8007:2880
128.7.40.129 0:0:0:0:0:ffff:8007:2881
128.7.40.130 0:0:0:0:0:ffff:8007:2882
128.7.40.131 0:0:0:0:0:ffff:8007:2883
128.7.40.132 0:0:0:0:0:ffff:8007:2884
128.7.40.133 0:0:0:0:0:ffff:8007:2885
128.7.40.134 0:0:0:0:0:ffff:8007:2886
128.7.40.135 0:0:0:0:0:ffff:8007:2887
128.7.40.136 0:0:0:0:0:ffff:8007:2888
128.7.40.137 0:0:0:0:0:ffff:8007:2889
128.7.40.138 0:0:0:0:0:ffff:8007:288a
128.7.40.139 0:0:0:0:0:ffff:8007:288b
128.7.40.140 0:0:0:0:0:ffff:8007:288c
128.7.40.141 0:0:0:0:0:ffff:8007:288d
128.7.40.142 0:0:0:0:0:ffff:8007:288e
128.7.40.143 0:0:0:0:0:ffff:8007:288f
128.7.40.144 0:0:0:0:0:ffff:8007:2890
128.7.40.145 0:0:0:0:0:ffff:8007:2891
128.7.40.146 0:0:0:0:0:ffff:8007:2892
128.7.40.147 0:0:0:0:0:ffff:8007:2893
128.7.40.148 0:0:0:0:0:ffff:8007:2894
128.7.40.149 0:0:0:0:0:ffff:8007:2895
128.7.40.150 0:0:0:0:0:ffff:8007:2896
128.7.40.151 0:0:0:0:0:ffff:8007:2897
128.7.40.152 0:0:0:0:0:ffff:8007:2898
128.7.40.153 0:0:0:0:0:ffff:8007:2899
128.7.40.154 0:0:0:0:0:ffff:8007:289a
128.7.40.155 0:0:0:0:0:ffff:8007:289b
128.7.40.156 0:0:0:0:0:ffff:8007:289c
128.7.40.157 0:0:0:0:0:ffff:8007:289d
128.7.40.158 0:0:0:0:0:ffff:8007:289e
128.7.40.159 0:0:0:0:0:ffff:8007:289f
128.7.40.160 0:0:0:0:0:ffff:8007:28a0
128.7.40.161 0:0:0:0:0:ffff:8007:28a1
128.7.40.162 0:0:0:0:0:ffff:8007:28a2
128.7.40.163 0:0:0:0:0:ffff:8007:28a3
128.7.40.164 0:0:0:0:0:ffff:8007:28a4
128.7.40.165 0:0:0:0:0:ffff:8007:28a5
128.7.40.166 0:0:0:0:0:ffff:8007:28a6
128.7.40.167 0:0:0:0:0:ffff:8007:28a7
128.7.40.168 0:0:0:0:0:ffff:8007:28a8
128.7.40.169 0:0:0:0:0:ffff:8007:28a9
128.7.40.170 0:0:0:0:0:ffff:8007:28aa
128.7.40.171 0:0:0:0:0:ffff:8007:28ab
128.7.40.172 0:0:0:0:0:ffff:8007:28ac
128.7.40.173 0:0:0:0:0:ffff:8007:28ad
128.7.40.174 0:0:0:0:0:ffff:8007:28ae
128.7.40.175 0:0:0:0:0:ffff:8007:28af
128.7.40.176 0:0:0:0:0:ffff:8007:28b0
128.7.40.177 0:0:0:0:0:ffff:8007:28b1
128.7.40.178 0:0:0:0:0:ffff:8007:28b2
128.7.40.179 0:0:0:0:0:ffff:8007:28b3
128.7.40.180 0:0:0:0:0:ffff:8007:28b4


128.7.40.181 0:0:0:0:0:ffff:8007:28b5
128.7.40.182 0:0:0:0:0:ffff:8007:28b6
128.7.40.183 0:0:0:0:0:ffff:8007:28b7
128.7.40.184 0:0:0:0:0:ffff:8007:28b8
128.7.40.185 0:0:0:0:0:ffff:8007:28b9
128.7.40.186 0:0:0:0:0:ffff:8007:28ba
128.7.40.187 0:0:0:0:0:ffff:8007:28bb
128.7.40.188 0:0:0:0:0:ffff:8007:28bc
128.7.40.189 0:0:0:0:0:ffff:8007:28bd
128.7.40.190 0:0:0:0:0:ffff:8007:28be
128.7.40.191 0:0:0:0:0:ffff:8007:28bf
128.7.40.192 0:0:0:0:0:ffff:8007:28c0
128.7.40.193 0:0:0:0:0:ffff:8007:28c1
128.7.40.194 0:0:0:0:0:ffff:8007:28c2
128.7.40.195 0:0:0:0:0:ffff:8007:28c3
128.7.40.196 0:0:0:0:0:ffff:8007:28c4
128.7.40.197 0:0:0:0:0:ffff:8007:28c5
128.7.40.198 0:0:0:0:0:ffff:8007:28c6
128.7.40.199 0:0:0:0:0:ffff:8007:28c7
128.7.40.200 0:0:0:0:0:ffff:8007:28c8
128.7.40.201 0:0:0:0:0:ffff:8007:28c9
128.7.40.202 0:0:0:0:0:ffff:8007:28ca
128.7.40.203 0:0:0:0:0:ffff:8007:28cb
128.7.40.204 0:0:0:0:0:ffff:8007:28cc
128.7.40.205 0:0:0:0:0:ffff:8007:28cd
128.7.40.206 0:0:0:0:0:ffff:8007:28ce
128.7.40.207 0:0:0:0:0:ffff:8007:28cf
128.7.40.208 0:0:0:0:0:ffff:8007:28d0
128.7.40.209 0:0:0:0:0:ffff:8007:28d1
128.7.40.210 0:0:0:0:0:ffff:8007:28d2
128.7.40.211 0:0:0:0:0:ffff:8007:28d3
128.7.40.212 0:0:0:0:0:ffff:8007:28d4
128.7.40.213 0:0:0:0:0:ffff:8007:28d5
128.7.40.214 0:0:0:0:0:ffff:8007:28d6
128.7.40.215 0:0:0:0:0:ffff:8007:28d7
128.7.40.216 0:0:0:0:0:ffff:8007:28d8
128.7.40.217 0:0:0:0:0:ffff:8007:28d9
128.7.40.218 0:0:0:0:0:ffff:8007:28da
128.7.40.219 0:0:0:0:0:ffff:8007:28db
128.7.40.220 0:0:0:0:0:ffff:8007:28dc
128.7.40.221 0:0:0:0:0:ffff:8007:28dd
128.7.40.222 0:0:0:0:0:ffff:8007:28de
128.7.40.223 0:0:0:0:0:ffff:8007:28df
128.7.40.224 0:0:0:0:0:ffff:8007:28e0
128.7.40.225 0:0:0:0:0:ffff:8007:28e1
128.7.40.226 0:0:0:0:0:ffff:8007:28e2
128.7.40.227 0:0:0:0:0:ffff:8007:28e3
128.7.40.228 0:0:0:0:0:ffff:8007:28e4
128.7.40.229 0:0:0:0:0:ffff:8007:28e5
128.7.40.230 0:0:0:0:0:ffff:8007:28e6
128.7.40.231 0:0:0:0:0:ffff:8007:28e7
128.7.40.232 0:0:0:0:0:ffff:8007:28e8
128.7.40.233 0:0:0:0:0:ffff:8007:28e9
128.7.40.234 0:0:0:0:0:ffff:8007:28ea
128.7.40.235 0:0:0:0:0:ffff:8007:28eb
128.7.40.236 0:0:0:0:0:ffff:8007:28ec
128.7.40.237 0:0:0:0:0:ffff:8007:28ed
128.7.40.238 0:0:0:0:0:ffff:8007:28ee
128.7.40.239 0:0:0:0:0:ffff:8007:28ef
128.7.40.240 0:0:0:0:0:ffff:8007:28f0
128.7.40.241 0:0:0:0:0:ffff:8007:28f1
128.7.40.242 0:0:0:0:0:ffff:8007:28f2
128.7.40.243 0:0:0:0:0:ffff:8007:28f3
128.7.40.244 0:0:0:0:0:ffff:8007:28f4
128.7.40.245 0:0:0:0:0:ffff:8007:28f5
128.7.40.246 0:0:0:0:0:ffff:8007:28f6
128.7.40.247 0:0:0:0:0:ffff:8007:28f7
128.7.40.248 0:0:0:0:0:ffff:8007:28f8
128.7.40.249 0:0:0:0:0:ffff:8007:28f9
128.7.40.250 0:0:0:0:0:ffff:8007:28fa
128.7.40.251 0:0:0:0:0:ffff:8007:28fb
128.7.40.252 0:0:0:0:0:ffff:8007:28fc
128.7.40.253 0:0:0:0:0:ffff:8007:28fd
128.7.40.254 0:0:0:0:0:ffff:8007:28fe
128.7.40.255 0:0:0:0:0:ffff:8007:28ff


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.