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
25.123.40.1 0:0:0:0:0:ffff:197b:2801
25.123.40.2 0:0:0:0:0:ffff:197b:2802
25.123.40.3 0:0:0:0:0:ffff:197b:2803
25.123.40.4 0:0:0:0:0:ffff:197b:2804
25.123.40.5 0:0:0:0:0:ffff:197b:2805
25.123.40.6 0:0:0:0:0:ffff:197b:2806
25.123.40.7 0:0:0:0:0:ffff:197b:2807
25.123.40.8 0:0:0:0:0:ffff:197b:2808
25.123.40.9 0:0:0:0:0:ffff:197b:2809
25.123.40.10 0:0:0:0:0:ffff:197b:280a
25.123.40.11 0:0:0:0:0:ffff:197b:280b
25.123.40.12 0:0:0:0:0:ffff:197b:280c
25.123.40.13 0:0:0:0:0:ffff:197b:280d
25.123.40.14 0:0:0:0:0:ffff:197b:280e
25.123.40.15 0:0:0:0:0:ffff:197b:280f
25.123.40.16 0:0:0:0:0:ffff:197b:2810
25.123.40.17 0:0:0:0:0:ffff:197b:2811
25.123.40.18 0:0:0:0:0:ffff:197b:2812
25.123.40.19 0:0:0:0:0:ffff:197b:2813
25.123.40.20 0:0:0:0:0:ffff:197b:2814
25.123.40.21 0:0:0:0:0:ffff:197b:2815
25.123.40.22 0:0:0:0:0:ffff:197b:2816
25.123.40.23 0:0:0:0:0:ffff:197b:2817
25.123.40.24 0:0:0:0:0:ffff:197b:2818
25.123.40.25 0:0:0:0:0:ffff:197b:2819
25.123.40.26 0:0:0:0:0:ffff:197b:281a
25.123.40.27 0:0:0:0:0:ffff:197b:281b
25.123.40.28 0:0:0:0:0:ffff:197b:281c
25.123.40.29 0:0:0:0:0:ffff:197b:281d
25.123.40.30 0:0:0:0:0:ffff:197b:281e
25.123.40.31 0:0:0:0:0:ffff:197b:281f
25.123.40.32 0:0:0:0:0:ffff:197b:2820
25.123.40.33 0:0:0:0:0:ffff:197b:2821
25.123.40.34 0:0:0:0:0:ffff:197b:2822
25.123.40.35 0:0:0:0:0:ffff:197b:2823
25.123.40.36 0:0:0:0:0:ffff:197b:2824
25.123.40.37 0:0:0:0:0:ffff:197b:2825
25.123.40.38 0:0:0:0:0:ffff:197b:2826
25.123.40.39 0:0:0:0:0:ffff:197b:2827
25.123.40.40 0:0:0:0:0:ffff:197b:2828
25.123.40.41 0:0:0:0:0:ffff:197b:2829
25.123.40.42 0:0:0:0:0:ffff:197b:282a
25.123.40.43 0:0:0:0:0:ffff:197b:282b
25.123.40.44 0:0:0:0:0:ffff:197b:282c
25.123.40.45 0:0:0:0:0:ffff:197b:282d
25.123.40.46 0:0:0:0:0:ffff:197b:282e
25.123.40.47 0:0:0:0:0:ffff:197b:282f
25.123.40.48 0:0:0:0:0:ffff:197b:2830
25.123.40.49 0:0:0:0:0:ffff:197b:2831
25.123.40.50 0:0:0:0:0:ffff:197b:2832
25.123.40.51 0:0:0:0:0:ffff:197b:2833
25.123.40.52 0:0:0:0:0:ffff:197b:2834
25.123.40.53 0:0:0:0:0:ffff:197b:2835
25.123.40.54 0:0:0:0:0:ffff:197b:2836
25.123.40.55 0:0:0:0:0:ffff:197b:2837
25.123.40.56 0:0:0:0:0:ffff:197b:2838
25.123.40.57 0:0:0:0:0:ffff:197b:2839
25.123.40.58 0:0:0:0:0:ffff:197b:283a
25.123.40.59 0:0:0:0:0:ffff:197b:283b
25.123.40.60 0:0:0:0:0:ffff:197b:283c


25.123.40.61 0:0:0:0:0:ffff:197b:283d
25.123.40.62 0:0:0:0:0:ffff:197b:283e
25.123.40.63 0:0:0:0:0:ffff:197b:283f
25.123.40.64 0:0:0:0:0:ffff:197b:2840
25.123.40.65 0:0:0:0:0:ffff:197b:2841
25.123.40.66 0:0:0:0:0:ffff:197b:2842
25.123.40.67 0:0:0:0:0:ffff:197b:2843
25.123.40.68 0:0:0:0:0:ffff:197b:2844
25.123.40.69 0:0:0:0:0:ffff:197b:2845
25.123.40.70 0:0:0:0:0:ffff:197b:2846
25.123.40.71 0:0:0:0:0:ffff:197b:2847
25.123.40.72 0:0:0:0:0:ffff:197b:2848
25.123.40.73 0:0:0:0:0:ffff:197b:2849
25.123.40.74 0:0:0:0:0:ffff:197b:284a
25.123.40.75 0:0:0:0:0:ffff:197b:284b
25.123.40.76 0:0:0:0:0:ffff:197b:284c
25.123.40.77 0:0:0:0:0:ffff:197b:284d
25.123.40.78 0:0:0:0:0:ffff:197b:284e
25.123.40.79 0:0:0:0:0:ffff:197b:284f
25.123.40.80 0:0:0:0:0:ffff:197b:2850
25.123.40.81 0:0:0:0:0:ffff:197b:2851
25.123.40.82 0:0:0:0:0:ffff:197b:2852
25.123.40.83 0:0:0:0:0:ffff:197b:2853
25.123.40.84 0:0:0:0:0:ffff:197b:2854
25.123.40.85 0:0:0:0:0:ffff:197b:2855
25.123.40.86 0:0:0:0:0:ffff:197b:2856
25.123.40.87 0:0:0:0:0:ffff:197b:2857
25.123.40.88 0:0:0:0:0:ffff:197b:2858
25.123.40.89 0:0:0:0:0:ffff:197b:2859
25.123.40.90 0:0:0:0:0:ffff:197b:285a
25.123.40.91 0:0:0:0:0:ffff:197b:285b
25.123.40.92 0:0:0:0:0:ffff:197b:285c
25.123.40.93 0:0:0:0:0:ffff:197b:285d
25.123.40.94 0:0:0:0:0:ffff:197b:285e
25.123.40.95 0:0:0:0:0:ffff:197b:285f
25.123.40.96 0:0:0:0:0:ffff:197b:2860
25.123.40.97 0:0:0:0:0:ffff:197b:2861
25.123.40.98 0:0:0:0:0:ffff:197b:2862
25.123.40.99 0:0:0:0:0:ffff:197b:2863
25.123.40.100 0:0:0:0:0:ffff:197b:2864
25.123.40.101 0:0:0:0:0:ffff:197b:2865
25.123.40.102 0:0:0:0:0:ffff:197b:2866
25.123.40.103 0:0:0:0:0:ffff:197b:2867
25.123.40.104 0:0:0:0:0:ffff:197b:2868
25.123.40.105 0:0:0:0:0:ffff:197b:2869
25.123.40.106 0:0:0:0:0:ffff:197b:286a
25.123.40.107 0:0:0:0:0:ffff:197b:286b
25.123.40.108 0:0:0:0:0:ffff:197b:286c
25.123.40.109 0:0:0:0:0:ffff:197b:286d
25.123.40.110 0:0:0:0:0:ffff:197b:286e
25.123.40.111 0:0:0:0:0:ffff:197b:286f
25.123.40.112 0:0:0:0:0:ffff:197b:2870
25.123.40.113 0:0:0:0:0:ffff:197b:2871
25.123.40.114 0:0:0:0:0:ffff:197b:2872
25.123.40.115 0:0:0:0:0:ffff:197b:2873
25.123.40.116 0:0:0:0:0:ffff:197b:2874
25.123.40.117 0:0:0:0:0:ffff:197b:2875
25.123.40.118 0:0:0:0:0:ffff:197b:2876
25.123.40.119 0:0:0:0:0:ffff:197b:2877
25.123.40.120 0:0:0:0:0:ffff:197b:2878


25.123.40.121 0:0:0:0:0:ffff:197b:2879
25.123.40.122 0:0:0:0:0:ffff:197b:287a
25.123.40.123 0:0:0:0:0:ffff:197b:287b
25.123.40.124 0:0:0:0:0:ffff:197b:287c
25.123.40.125 0:0:0:0:0:ffff:197b:287d
25.123.40.126 0:0:0:0:0:ffff:197b:287e
25.123.40.127 0:0:0:0:0:ffff:197b:287f
25.123.40.128 0:0:0:0:0:ffff:197b:2880
25.123.40.129 0:0:0:0:0:ffff:197b:2881
25.123.40.130 0:0:0:0:0:ffff:197b:2882
25.123.40.131 0:0:0:0:0:ffff:197b:2883
25.123.40.132 0:0:0:0:0:ffff:197b:2884
25.123.40.133 0:0:0:0:0:ffff:197b:2885
25.123.40.134 0:0:0:0:0:ffff:197b:2886
25.123.40.135 0:0:0:0:0:ffff:197b:2887
25.123.40.136 0:0:0:0:0:ffff:197b:2888
25.123.40.137 0:0:0:0:0:ffff:197b:2889
25.123.40.138 0:0:0:0:0:ffff:197b:288a
25.123.40.139 0:0:0:0:0:ffff:197b:288b
25.123.40.140 0:0:0:0:0:ffff:197b:288c
25.123.40.141 0:0:0:0:0:ffff:197b:288d
25.123.40.142 0:0:0:0:0:ffff:197b:288e
25.123.40.143 0:0:0:0:0:ffff:197b:288f
25.123.40.144 0:0:0:0:0:ffff:197b:2890
25.123.40.145 0:0:0:0:0:ffff:197b:2891
25.123.40.146 0:0:0:0:0:ffff:197b:2892
25.123.40.147 0:0:0:0:0:ffff:197b:2893
25.123.40.148 0:0:0:0:0:ffff:197b:2894
25.123.40.149 0:0:0:0:0:ffff:197b:2895
25.123.40.150 0:0:0:0:0:ffff:197b:2896
25.123.40.151 0:0:0:0:0:ffff:197b:2897
25.123.40.152 0:0:0:0:0:ffff:197b:2898
25.123.40.153 0:0:0:0:0:ffff:197b:2899
25.123.40.154 0:0:0:0:0:ffff:197b:289a
25.123.40.155 0:0:0:0:0:ffff:197b:289b
25.123.40.156 0:0:0:0:0:ffff:197b:289c
25.123.40.157 0:0:0:0:0:ffff:197b:289d
25.123.40.158 0:0:0:0:0:ffff:197b:289e
25.123.40.159 0:0:0:0:0:ffff:197b:289f
25.123.40.160 0:0:0:0:0:ffff:197b:28a0
25.123.40.161 0:0:0:0:0:ffff:197b:28a1
25.123.40.162 0:0:0:0:0:ffff:197b:28a2
25.123.40.163 0:0:0:0:0:ffff:197b:28a3
25.123.40.164 0:0:0:0:0:ffff:197b:28a4
25.123.40.165 0:0:0:0:0:ffff:197b:28a5
25.123.40.166 0:0:0:0:0:ffff:197b:28a6
25.123.40.167 0:0:0:0:0:ffff:197b:28a7
25.123.40.168 0:0:0:0:0:ffff:197b:28a8
25.123.40.169 0:0:0:0:0:ffff:197b:28a9
25.123.40.170 0:0:0:0:0:ffff:197b:28aa
25.123.40.171 0:0:0:0:0:ffff:197b:28ab
25.123.40.172 0:0:0:0:0:ffff:197b:28ac
25.123.40.173 0:0:0:0:0:ffff:197b:28ad
25.123.40.174 0:0:0:0:0:ffff:197b:28ae
25.123.40.175 0:0:0:0:0:ffff:197b:28af
25.123.40.176 0:0:0:0:0:ffff:197b:28b0
25.123.40.177 0:0:0:0:0:ffff:197b:28b1
25.123.40.178 0:0:0:0:0:ffff:197b:28b2
25.123.40.179 0:0:0:0:0:ffff:197b:28b3
25.123.40.180 0:0:0:0:0:ffff:197b:28b4


25.123.40.181 0:0:0:0:0:ffff:197b:28b5
25.123.40.182 0:0:0:0:0:ffff:197b:28b6
25.123.40.183 0:0:0:0:0:ffff:197b:28b7
25.123.40.184 0:0:0:0:0:ffff:197b:28b8
25.123.40.185 0:0:0:0:0:ffff:197b:28b9
25.123.40.186 0:0:0:0:0:ffff:197b:28ba
25.123.40.187 0:0:0:0:0:ffff:197b:28bb
25.123.40.188 0:0:0:0:0:ffff:197b:28bc
25.123.40.189 0:0:0:0:0:ffff:197b:28bd
25.123.40.190 0:0:0:0:0:ffff:197b:28be
25.123.40.191 0:0:0:0:0:ffff:197b:28bf
25.123.40.192 0:0:0:0:0:ffff:197b:28c0
25.123.40.193 0:0:0:0:0:ffff:197b:28c1
25.123.40.194 0:0:0:0:0:ffff:197b:28c2
25.123.40.195 0:0:0:0:0:ffff:197b:28c3
25.123.40.196 0:0:0:0:0:ffff:197b:28c4
25.123.40.197 0:0:0:0:0:ffff:197b:28c5
25.123.40.198 0:0:0:0:0:ffff:197b:28c6
25.123.40.199 0:0:0:0:0:ffff:197b:28c7
25.123.40.200 0:0:0:0:0:ffff:197b:28c8
25.123.40.201 0:0:0:0:0:ffff:197b:28c9
25.123.40.202 0:0:0:0:0:ffff:197b:28ca
25.123.40.203 0:0:0:0:0:ffff:197b:28cb
25.123.40.204 0:0:0:0:0:ffff:197b:28cc
25.123.40.205 0:0:0:0:0:ffff:197b:28cd
25.123.40.206 0:0:0:0:0:ffff:197b:28ce
25.123.40.207 0:0:0:0:0:ffff:197b:28cf
25.123.40.208 0:0:0:0:0:ffff:197b:28d0
25.123.40.209 0:0:0:0:0:ffff:197b:28d1
25.123.40.210 0:0:0:0:0:ffff:197b:28d2
25.123.40.211 0:0:0:0:0:ffff:197b:28d3
25.123.40.212 0:0:0:0:0:ffff:197b:28d4
25.123.40.213 0:0:0:0:0:ffff:197b:28d5
25.123.40.214 0:0:0:0:0:ffff:197b:28d6
25.123.40.215 0:0:0:0:0:ffff:197b:28d7
25.123.40.216 0:0:0:0:0:ffff:197b:28d8
25.123.40.217 0:0:0:0:0:ffff:197b:28d9
25.123.40.218 0:0:0:0:0:ffff:197b:28da
25.123.40.219 0:0:0:0:0:ffff:197b:28db
25.123.40.220 0:0:0:0:0:ffff:197b:28dc
25.123.40.221 0:0:0:0:0:ffff:197b:28dd
25.123.40.222 0:0:0:0:0:ffff:197b:28de
25.123.40.223 0:0:0:0:0:ffff:197b:28df
25.123.40.224 0:0:0:0:0:ffff:197b:28e0
25.123.40.225 0:0:0:0:0:ffff:197b:28e1
25.123.40.226 0:0:0:0:0:ffff:197b:28e2
25.123.40.227 0:0:0:0:0:ffff:197b:28e3
25.123.40.228 0:0:0:0:0:ffff:197b:28e4
25.123.40.229 0:0:0:0:0:ffff:197b:28e5
25.123.40.230 0:0:0:0:0:ffff:197b:28e6
25.123.40.231 0:0:0:0:0:ffff:197b:28e7
25.123.40.232 0:0:0:0:0:ffff:197b:28e8
25.123.40.233 0:0:0:0:0:ffff:197b:28e9
25.123.40.234 0:0:0:0:0:ffff:197b:28ea
25.123.40.235 0:0:0:0:0:ffff:197b:28eb
25.123.40.236 0:0:0:0:0:ffff:197b:28ec
25.123.40.237 0:0:0:0:0:ffff:197b:28ed
25.123.40.238 0:0:0:0:0:ffff:197b:28ee
25.123.40.239 0:0:0:0:0:ffff:197b:28ef
25.123.40.240 0:0:0:0:0:ffff:197b:28f0
25.123.40.241 0:0:0:0:0:ffff:197b:28f1
25.123.40.242 0:0:0:0:0:ffff:197b:28f2
25.123.40.243 0:0:0:0:0:ffff:197b:28f3
25.123.40.244 0:0:0:0:0:ffff:197b:28f4
25.123.40.245 0:0:0:0:0:ffff:197b:28f5
25.123.40.246 0:0:0:0:0:ffff:197b:28f6
25.123.40.247 0:0:0:0:0:ffff:197b:28f7
25.123.40.248 0:0:0:0:0:ffff:197b:28f8
25.123.40.249 0:0:0:0:0:ffff:197b:28f9
25.123.40.250 0:0:0:0:0:ffff:197b:28fa
25.123.40.251 0:0:0:0:0:ffff:197b:28fb
25.123.40.252 0:0:0:0:0:ffff:197b:28fc
25.123.40.253 0:0:0:0:0:ffff:197b:28fd
25.123.40.254 0:0:0:0:0:ffff:197b:28fe
25.123.40.255 0:0:0:0:0:ffff:197b: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.