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
21.113.40.1 0:0:0:0:0:ffff:1571:2801
21.113.40.2 0:0:0:0:0:ffff:1571:2802
21.113.40.3 0:0:0:0:0:ffff:1571:2803
21.113.40.4 0:0:0:0:0:ffff:1571:2804
21.113.40.5 0:0:0:0:0:ffff:1571:2805
21.113.40.6 0:0:0:0:0:ffff:1571:2806
21.113.40.7 0:0:0:0:0:ffff:1571:2807
21.113.40.8 0:0:0:0:0:ffff:1571:2808
21.113.40.9 0:0:0:0:0:ffff:1571:2809
21.113.40.10 0:0:0:0:0:ffff:1571:280a
21.113.40.11 0:0:0:0:0:ffff:1571:280b
21.113.40.12 0:0:0:0:0:ffff:1571:280c
21.113.40.13 0:0:0:0:0:ffff:1571:280d
21.113.40.14 0:0:0:0:0:ffff:1571:280e
21.113.40.15 0:0:0:0:0:ffff:1571:280f
21.113.40.16 0:0:0:0:0:ffff:1571:2810
21.113.40.17 0:0:0:0:0:ffff:1571:2811
21.113.40.18 0:0:0:0:0:ffff:1571:2812
21.113.40.19 0:0:0:0:0:ffff:1571:2813
21.113.40.20 0:0:0:0:0:ffff:1571:2814
21.113.40.21 0:0:0:0:0:ffff:1571:2815
21.113.40.22 0:0:0:0:0:ffff:1571:2816
21.113.40.23 0:0:0:0:0:ffff:1571:2817
21.113.40.24 0:0:0:0:0:ffff:1571:2818
21.113.40.25 0:0:0:0:0:ffff:1571:2819
21.113.40.26 0:0:0:0:0:ffff:1571:281a
21.113.40.27 0:0:0:0:0:ffff:1571:281b
21.113.40.28 0:0:0:0:0:ffff:1571:281c
21.113.40.29 0:0:0:0:0:ffff:1571:281d
21.113.40.30 0:0:0:0:0:ffff:1571:281e
21.113.40.31 0:0:0:0:0:ffff:1571:281f
21.113.40.32 0:0:0:0:0:ffff:1571:2820
21.113.40.33 0:0:0:0:0:ffff:1571:2821
21.113.40.34 0:0:0:0:0:ffff:1571:2822
21.113.40.35 0:0:0:0:0:ffff:1571:2823
21.113.40.36 0:0:0:0:0:ffff:1571:2824
21.113.40.37 0:0:0:0:0:ffff:1571:2825
21.113.40.38 0:0:0:0:0:ffff:1571:2826
21.113.40.39 0:0:0:0:0:ffff:1571:2827
21.113.40.40 0:0:0:0:0:ffff:1571:2828
21.113.40.41 0:0:0:0:0:ffff:1571:2829
21.113.40.42 0:0:0:0:0:ffff:1571:282a
21.113.40.43 0:0:0:0:0:ffff:1571:282b
21.113.40.44 0:0:0:0:0:ffff:1571:282c
21.113.40.45 0:0:0:0:0:ffff:1571:282d
21.113.40.46 0:0:0:0:0:ffff:1571:282e
21.113.40.47 0:0:0:0:0:ffff:1571:282f
21.113.40.48 0:0:0:0:0:ffff:1571:2830
21.113.40.49 0:0:0:0:0:ffff:1571:2831
21.113.40.50 0:0:0:0:0:ffff:1571:2832
21.113.40.51 0:0:0:0:0:ffff:1571:2833
21.113.40.52 0:0:0:0:0:ffff:1571:2834
21.113.40.53 0:0:0:0:0:ffff:1571:2835
21.113.40.54 0:0:0:0:0:ffff:1571:2836
21.113.40.55 0:0:0:0:0:ffff:1571:2837
21.113.40.56 0:0:0:0:0:ffff:1571:2838
21.113.40.57 0:0:0:0:0:ffff:1571:2839
21.113.40.58 0:0:0:0:0:ffff:1571:283a
21.113.40.59 0:0:0:0:0:ffff:1571:283b
21.113.40.60 0:0:0:0:0:ffff:1571:283c


21.113.40.61 0:0:0:0:0:ffff:1571:283d
21.113.40.62 0:0:0:0:0:ffff:1571:283e
21.113.40.63 0:0:0:0:0:ffff:1571:283f
21.113.40.64 0:0:0:0:0:ffff:1571:2840
21.113.40.65 0:0:0:0:0:ffff:1571:2841
21.113.40.66 0:0:0:0:0:ffff:1571:2842
21.113.40.67 0:0:0:0:0:ffff:1571:2843
21.113.40.68 0:0:0:0:0:ffff:1571:2844
21.113.40.69 0:0:0:0:0:ffff:1571:2845
21.113.40.70 0:0:0:0:0:ffff:1571:2846
21.113.40.71 0:0:0:0:0:ffff:1571:2847
21.113.40.72 0:0:0:0:0:ffff:1571:2848
21.113.40.73 0:0:0:0:0:ffff:1571:2849
21.113.40.74 0:0:0:0:0:ffff:1571:284a
21.113.40.75 0:0:0:0:0:ffff:1571:284b
21.113.40.76 0:0:0:0:0:ffff:1571:284c
21.113.40.77 0:0:0:0:0:ffff:1571:284d
21.113.40.78 0:0:0:0:0:ffff:1571:284e
21.113.40.79 0:0:0:0:0:ffff:1571:284f
21.113.40.80 0:0:0:0:0:ffff:1571:2850
21.113.40.81 0:0:0:0:0:ffff:1571:2851
21.113.40.82 0:0:0:0:0:ffff:1571:2852
21.113.40.83 0:0:0:0:0:ffff:1571:2853
21.113.40.84 0:0:0:0:0:ffff:1571:2854
21.113.40.85 0:0:0:0:0:ffff:1571:2855
21.113.40.86 0:0:0:0:0:ffff:1571:2856
21.113.40.87 0:0:0:0:0:ffff:1571:2857
21.113.40.88 0:0:0:0:0:ffff:1571:2858
21.113.40.89 0:0:0:0:0:ffff:1571:2859
21.113.40.90 0:0:0:0:0:ffff:1571:285a
21.113.40.91 0:0:0:0:0:ffff:1571:285b
21.113.40.92 0:0:0:0:0:ffff:1571:285c
21.113.40.93 0:0:0:0:0:ffff:1571:285d
21.113.40.94 0:0:0:0:0:ffff:1571:285e
21.113.40.95 0:0:0:0:0:ffff:1571:285f
21.113.40.96 0:0:0:0:0:ffff:1571:2860
21.113.40.97 0:0:0:0:0:ffff:1571:2861
21.113.40.98 0:0:0:0:0:ffff:1571:2862
21.113.40.99 0:0:0:0:0:ffff:1571:2863
21.113.40.100 0:0:0:0:0:ffff:1571:2864
21.113.40.101 0:0:0:0:0:ffff:1571:2865
21.113.40.102 0:0:0:0:0:ffff:1571:2866
21.113.40.103 0:0:0:0:0:ffff:1571:2867
21.113.40.104 0:0:0:0:0:ffff:1571:2868
21.113.40.105 0:0:0:0:0:ffff:1571:2869
21.113.40.106 0:0:0:0:0:ffff:1571:286a
21.113.40.107 0:0:0:0:0:ffff:1571:286b
21.113.40.108 0:0:0:0:0:ffff:1571:286c
21.113.40.109 0:0:0:0:0:ffff:1571:286d
21.113.40.110 0:0:0:0:0:ffff:1571:286e
21.113.40.111 0:0:0:0:0:ffff:1571:286f
21.113.40.112 0:0:0:0:0:ffff:1571:2870
21.113.40.113 0:0:0:0:0:ffff:1571:2871
21.113.40.114 0:0:0:0:0:ffff:1571:2872
21.113.40.115 0:0:0:0:0:ffff:1571:2873
21.113.40.116 0:0:0:0:0:ffff:1571:2874
21.113.40.117 0:0:0:0:0:ffff:1571:2875
21.113.40.118 0:0:0:0:0:ffff:1571:2876
21.113.40.119 0:0:0:0:0:ffff:1571:2877
21.113.40.120 0:0:0:0:0:ffff:1571:2878


21.113.40.121 0:0:0:0:0:ffff:1571:2879
21.113.40.122 0:0:0:0:0:ffff:1571:287a
21.113.40.123 0:0:0:0:0:ffff:1571:287b
21.113.40.124 0:0:0:0:0:ffff:1571:287c
21.113.40.125 0:0:0:0:0:ffff:1571:287d
21.113.40.126 0:0:0:0:0:ffff:1571:287e
21.113.40.127 0:0:0:0:0:ffff:1571:287f
21.113.40.128 0:0:0:0:0:ffff:1571:2880
21.113.40.129 0:0:0:0:0:ffff:1571:2881
21.113.40.130 0:0:0:0:0:ffff:1571:2882
21.113.40.131 0:0:0:0:0:ffff:1571:2883
21.113.40.132 0:0:0:0:0:ffff:1571:2884
21.113.40.133 0:0:0:0:0:ffff:1571:2885
21.113.40.134 0:0:0:0:0:ffff:1571:2886
21.113.40.135 0:0:0:0:0:ffff:1571:2887
21.113.40.136 0:0:0:0:0:ffff:1571:2888
21.113.40.137 0:0:0:0:0:ffff:1571:2889
21.113.40.138 0:0:0:0:0:ffff:1571:288a
21.113.40.139 0:0:0:0:0:ffff:1571:288b
21.113.40.140 0:0:0:0:0:ffff:1571:288c
21.113.40.141 0:0:0:0:0:ffff:1571:288d
21.113.40.142 0:0:0:0:0:ffff:1571:288e
21.113.40.143 0:0:0:0:0:ffff:1571:288f
21.113.40.144 0:0:0:0:0:ffff:1571:2890
21.113.40.145 0:0:0:0:0:ffff:1571:2891
21.113.40.146 0:0:0:0:0:ffff:1571:2892
21.113.40.147 0:0:0:0:0:ffff:1571:2893
21.113.40.148 0:0:0:0:0:ffff:1571:2894
21.113.40.149 0:0:0:0:0:ffff:1571:2895
21.113.40.150 0:0:0:0:0:ffff:1571:2896
21.113.40.151 0:0:0:0:0:ffff:1571:2897
21.113.40.152 0:0:0:0:0:ffff:1571:2898
21.113.40.153 0:0:0:0:0:ffff:1571:2899
21.113.40.154 0:0:0:0:0:ffff:1571:289a
21.113.40.155 0:0:0:0:0:ffff:1571:289b
21.113.40.156 0:0:0:0:0:ffff:1571:289c
21.113.40.157 0:0:0:0:0:ffff:1571:289d
21.113.40.158 0:0:0:0:0:ffff:1571:289e
21.113.40.159 0:0:0:0:0:ffff:1571:289f
21.113.40.160 0:0:0:0:0:ffff:1571:28a0
21.113.40.161 0:0:0:0:0:ffff:1571:28a1
21.113.40.162 0:0:0:0:0:ffff:1571:28a2
21.113.40.163 0:0:0:0:0:ffff:1571:28a3
21.113.40.164 0:0:0:0:0:ffff:1571:28a4
21.113.40.165 0:0:0:0:0:ffff:1571:28a5
21.113.40.166 0:0:0:0:0:ffff:1571:28a6
21.113.40.167 0:0:0:0:0:ffff:1571:28a7
21.113.40.168 0:0:0:0:0:ffff:1571:28a8
21.113.40.169 0:0:0:0:0:ffff:1571:28a9
21.113.40.170 0:0:0:0:0:ffff:1571:28aa
21.113.40.171 0:0:0:0:0:ffff:1571:28ab
21.113.40.172 0:0:0:0:0:ffff:1571:28ac
21.113.40.173 0:0:0:0:0:ffff:1571:28ad
21.113.40.174 0:0:0:0:0:ffff:1571:28ae
21.113.40.175 0:0:0:0:0:ffff:1571:28af
21.113.40.176 0:0:0:0:0:ffff:1571:28b0
21.113.40.177 0:0:0:0:0:ffff:1571:28b1
21.113.40.178 0:0:0:0:0:ffff:1571:28b2
21.113.40.179 0:0:0:0:0:ffff:1571:28b3
21.113.40.180 0:0:0:0:0:ffff:1571:28b4


21.113.40.181 0:0:0:0:0:ffff:1571:28b5
21.113.40.182 0:0:0:0:0:ffff:1571:28b6
21.113.40.183 0:0:0:0:0:ffff:1571:28b7
21.113.40.184 0:0:0:0:0:ffff:1571:28b8
21.113.40.185 0:0:0:0:0:ffff:1571:28b9
21.113.40.186 0:0:0:0:0:ffff:1571:28ba
21.113.40.187 0:0:0:0:0:ffff:1571:28bb
21.113.40.188 0:0:0:0:0:ffff:1571:28bc
21.113.40.189 0:0:0:0:0:ffff:1571:28bd
21.113.40.190 0:0:0:0:0:ffff:1571:28be
21.113.40.191 0:0:0:0:0:ffff:1571:28bf
21.113.40.192 0:0:0:0:0:ffff:1571:28c0
21.113.40.193 0:0:0:0:0:ffff:1571:28c1
21.113.40.194 0:0:0:0:0:ffff:1571:28c2
21.113.40.195 0:0:0:0:0:ffff:1571:28c3
21.113.40.196 0:0:0:0:0:ffff:1571:28c4
21.113.40.197 0:0:0:0:0:ffff:1571:28c5
21.113.40.198 0:0:0:0:0:ffff:1571:28c6
21.113.40.199 0:0:0:0:0:ffff:1571:28c7
21.113.40.200 0:0:0:0:0:ffff:1571:28c8
21.113.40.201 0:0:0:0:0:ffff:1571:28c9
21.113.40.202 0:0:0:0:0:ffff:1571:28ca
21.113.40.203 0:0:0:0:0:ffff:1571:28cb
21.113.40.204 0:0:0:0:0:ffff:1571:28cc
21.113.40.205 0:0:0:0:0:ffff:1571:28cd
21.113.40.206 0:0:0:0:0:ffff:1571:28ce
21.113.40.207 0:0:0:0:0:ffff:1571:28cf
21.113.40.208 0:0:0:0:0:ffff:1571:28d0
21.113.40.209 0:0:0:0:0:ffff:1571:28d1
21.113.40.210 0:0:0:0:0:ffff:1571:28d2
21.113.40.211 0:0:0:0:0:ffff:1571:28d3
21.113.40.212 0:0:0:0:0:ffff:1571:28d4
21.113.40.213 0:0:0:0:0:ffff:1571:28d5
21.113.40.214 0:0:0:0:0:ffff:1571:28d6
21.113.40.215 0:0:0:0:0:ffff:1571:28d7
21.113.40.216 0:0:0:0:0:ffff:1571:28d8
21.113.40.217 0:0:0:0:0:ffff:1571:28d9
21.113.40.218 0:0:0:0:0:ffff:1571:28da
21.113.40.219 0:0:0:0:0:ffff:1571:28db
21.113.40.220 0:0:0:0:0:ffff:1571:28dc
21.113.40.221 0:0:0:0:0:ffff:1571:28dd
21.113.40.222 0:0:0:0:0:ffff:1571:28de
21.113.40.223 0:0:0:0:0:ffff:1571:28df
21.113.40.224 0:0:0:0:0:ffff:1571:28e0
21.113.40.225 0:0:0:0:0:ffff:1571:28e1
21.113.40.226 0:0:0:0:0:ffff:1571:28e2
21.113.40.227 0:0:0:0:0:ffff:1571:28e3
21.113.40.228 0:0:0:0:0:ffff:1571:28e4
21.113.40.229 0:0:0:0:0:ffff:1571:28e5
21.113.40.230 0:0:0:0:0:ffff:1571:28e6
21.113.40.231 0:0:0:0:0:ffff:1571:28e7
21.113.40.232 0:0:0:0:0:ffff:1571:28e8
21.113.40.233 0:0:0:0:0:ffff:1571:28e9
21.113.40.234 0:0:0:0:0:ffff:1571:28ea
21.113.40.235 0:0:0:0:0:ffff:1571:28eb
21.113.40.236 0:0:0:0:0:ffff:1571:28ec
21.113.40.237 0:0:0:0:0:ffff:1571:28ed
21.113.40.238 0:0:0:0:0:ffff:1571:28ee
21.113.40.239 0:0:0:0:0:ffff:1571:28ef
21.113.40.240 0:0:0:0:0:ffff:1571:28f0
21.113.40.241 0:0:0:0:0:ffff:1571:28f1
21.113.40.242 0:0:0:0:0:ffff:1571:28f2
21.113.40.243 0:0:0:0:0:ffff:1571:28f3
21.113.40.244 0:0:0:0:0:ffff:1571:28f4
21.113.40.245 0:0:0:0:0:ffff:1571:28f5
21.113.40.246 0:0:0:0:0:ffff:1571:28f6
21.113.40.247 0:0:0:0:0:ffff:1571:28f7
21.113.40.248 0:0:0:0:0:ffff:1571:28f8
21.113.40.249 0:0:0:0:0:ffff:1571:28f9
21.113.40.250 0:0:0:0:0:ffff:1571:28fa
21.113.40.251 0:0:0:0:0:ffff:1571:28fb
21.113.40.252 0:0:0:0:0:ffff:1571:28fc
21.113.40.253 0:0:0:0:0:ffff:1571:28fd
21.113.40.254 0:0:0:0:0:ffff:1571:28fe
21.113.40.255 0:0:0:0:0:ffff:1571:28ff


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.