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
144.21.40.1 0:0:0:0:0:ffff:9015:2801
144.21.40.2 0:0:0:0:0:ffff:9015:2802
144.21.40.3 0:0:0:0:0:ffff:9015:2803
144.21.40.4 0:0:0:0:0:ffff:9015:2804
144.21.40.5 0:0:0:0:0:ffff:9015:2805
144.21.40.6 0:0:0:0:0:ffff:9015:2806
144.21.40.7 0:0:0:0:0:ffff:9015:2807
144.21.40.8 0:0:0:0:0:ffff:9015:2808
144.21.40.9 0:0:0:0:0:ffff:9015:2809
144.21.40.10 0:0:0:0:0:ffff:9015:280a
144.21.40.11 0:0:0:0:0:ffff:9015:280b
144.21.40.12 0:0:0:0:0:ffff:9015:280c
144.21.40.13 0:0:0:0:0:ffff:9015:280d
144.21.40.14 0:0:0:0:0:ffff:9015:280e
144.21.40.15 0:0:0:0:0:ffff:9015:280f
144.21.40.16 0:0:0:0:0:ffff:9015:2810
144.21.40.17 0:0:0:0:0:ffff:9015:2811
144.21.40.18 0:0:0:0:0:ffff:9015:2812
144.21.40.19 0:0:0:0:0:ffff:9015:2813
144.21.40.20 0:0:0:0:0:ffff:9015:2814
144.21.40.21 0:0:0:0:0:ffff:9015:2815
144.21.40.22 0:0:0:0:0:ffff:9015:2816
144.21.40.23 0:0:0:0:0:ffff:9015:2817
144.21.40.24 0:0:0:0:0:ffff:9015:2818
144.21.40.25 0:0:0:0:0:ffff:9015:2819
144.21.40.26 0:0:0:0:0:ffff:9015:281a
144.21.40.27 0:0:0:0:0:ffff:9015:281b
144.21.40.28 0:0:0:0:0:ffff:9015:281c
144.21.40.29 0:0:0:0:0:ffff:9015:281d
144.21.40.30 0:0:0:0:0:ffff:9015:281e
144.21.40.31 0:0:0:0:0:ffff:9015:281f
144.21.40.32 0:0:0:0:0:ffff:9015:2820
144.21.40.33 0:0:0:0:0:ffff:9015:2821
144.21.40.34 0:0:0:0:0:ffff:9015:2822
144.21.40.35 0:0:0:0:0:ffff:9015:2823
144.21.40.36 0:0:0:0:0:ffff:9015:2824
144.21.40.37 0:0:0:0:0:ffff:9015:2825
144.21.40.38 0:0:0:0:0:ffff:9015:2826
144.21.40.39 0:0:0:0:0:ffff:9015:2827
144.21.40.40 0:0:0:0:0:ffff:9015:2828
144.21.40.41 0:0:0:0:0:ffff:9015:2829
144.21.40.42 0:0:0:0:0:ffff:9015:282a
144.21.40.43 0:0:0:0:0:ffff:9015:282b
144.21.40.44 0:0:0:0:0:ffff:9015:282c
144.21.40.45 0:0:0:0:0:ffff:9015:282d
144.21.40.46 0:0:0:0:0:ffff:9015:282e
144.21.40.47 0:0:0:0:0:ffff:9015:282f
144.21.40.48 0:0:0:0:0:ffff:9015:2830
144.21.40.49 0:0:0:0:0:ffff:9015:2831
144.21.40.50 0:0:0:0:0:ffff:9015:2832
144.21.40.51 0:0:0:0:0:ffff:9015:2833
144.21.40.52 0:0:0:0:0:ffff:9015:2834
144.21.40.53 0:0:0:0:0:ffff:9015:2835
144.21.40.54 0:0:0:0:0:ffff:9015:2836
144.21.40.55 0:0:0:0:0:ffff:9015:2837
144.21.40.56 0:0:0:0:0:ffff:9015:2838
144.21.40.57 0:0:0:0:0:ffff:9015:2839
144.21.40.58 0:0:0:0:0:ffff:9015:283a
144.21.40.59 0:0:0:0:0:ffff:9015:283b
144.21.40.60 0:0:0:0:0:ffff:9015:283c


144.21.40.61 0:0:0:0:0:ffff:9015:283d
144.21.40.62 0:0:0:0:0:ffff:9015:283e
144.21.40.63 0:0:0:0:0:ffff:9015:283f
144.21.40.64 0:0:0:0:0:ffff:9015:2840
144.21.40.65 0:0:0:0:0:ffff:9015:2841
144.21.40.66 0:0:0:0:0:ffff:9015:2842
144.21.40.67 0:0:0:0:0:ffff:9015:2843
144.21.40.68 0:0:0:0:0:ffff:9015:2844
144.21.40.69 0:0:0:0:0:ffff:9015:2845
144.21.40.70 0:0:0:0:0:ffff:9015:2846
144.21.40.71 0:0:0:0:0:ffff:9015:2847
144.21.40.72 0:0:0:0:0:ffff:9015:2848
144.21.40.73 0:0:0:0:0:ffff:9015:2849
144.21.40.74 0:0:0:0:0:ffff:9015:284a
144.21.40.75 0:0:0:0:0:ffff:9015:284b
144.21.40.76 0:0:0:0:0:ffff:9015:284c
144.21.40.77 0:0:0:0:0:ffff:9015:284d
144.21.40.78 0:0:0:0:0:ffff:9015:284e
144.21.40.79 0:0:0:0:0:ffff:9015:284f
144.21.40.80 0:0:0:0:0:ffff:9015:2850
144.21.40.81 0:0:0:0:0:ffff:9015:2851
144.21.40.82 0:0:0:0:0:ffff:9015:2852
144.21.40.83 0:0:0:0:0:ffff:9015:2853
144.21.40.84 0:0:0:0:0:ffff:9015:2854
144.21.40.85 0:0:0:0:0:ffff:9015:2855
144.21.40.86 0:0:0:0:0:ffff:9015:2856
144.21.40.87 0:0:0:0:0:ffff:9015:2857
144.21.40.88 0:0:0:0:0:ffff:9015:2858
144.21.40.89 0:0:0:0:0:ffff:9015:2859
144.21.40.90 0:0:0:0:0:ffff:9015:285a
144.21.40.91 0:0:0:0:0:ffff:9015:285b
144.21.40.92 0:0:0:0:0:ffff:9015:285c
144.21.40.93 0:0:0:0:0:ffff:9015:285d
144.21.40.94 0:0:0:0:0:ffff:9015:285e
144.21.40.95 0:0:0:0:0:ffff:9015:285f
144.21.40.96 0:0:0:0:0:ffff:9015:2860
144.21.40.97 0:0:0:0:0:ffff:9015:2861
144.21.40.98 0:0:0:0:0:ffff:9015:2862
144.21.40.99 0:0:0:0:0:ffff:9015:2863
144.21.40.100 0:0:0:0:0:ffff:9015:2864
144.21.40.101 0:0:0:0:0:ffff:9015:2865
144.21.40.102 0:0:0:0:0:ffff:9015:2866
144.21.40.103 0:0:0:0:0:ffff:9015:2867
144.21.40.104 0:0:0:0:0:ffff:9015:2868
144.21.40.105 0:0:0:0:0:ffff:9015:2869
144.21.40.106 0:0:0:0:0:ffff:9015:286a
144.21.40.107 0:0:0:0:0:ffff:9015:286b
144.21.40.108 0:0:0:0:0:ffff:9015:286c
144.21.40.109 0:0:0:0:0:ffff:9015:286d
144.21.40.110 0:0:0:0:0:ffff:9015:286e
144.21.40.111 0:0:0:0:0:ffff:9015:286f
144.21.40.112 0:0:0:0:0:ffff:9015:2870
144.21.40.113 0:0:0:0:0:ffff:9015:2871
144.21.40.114 0:0:0:0:0:ffff:9015:2872
144.21.40.115 0:0:0:0:0:ffff:9015:2873
144.21.40.116 0:0:0:0:0:ffff:9015:2874
144.21.40.117 0:0:0:0:0:ffff:9015:2875
144.21.40.118 0:0:0:0:0:ffff:9015:2876
144.21.40.119 0:0:0:0:0:ffff:9015:2877
144.21.40.120 0:0:0:0:0:ffff:9015:2878


144.21.40.121 0:0:0:0:0:ffff:9015:2879
144.21.40.122 0:0:0:0:0:ffff:9015:287a
144.21.40.123 0:0:0:0:0:ffff:9015:287b
144.21.40.124 0:0:0:0:0:ffff:9015:287c
144.21.40.125 0:0:0:0:0:ffff:9015:287d
144.21.40.126 0:0:0:0:0:ffff:9015:287e
144.21.40.127 0:0:0:0:0:ffff:9015:287f
144.21.40.128 0:0:0:0:0:ffff:9015:2880
144.21.40.129 0:0:0:0:0:ffff:9015:2881
144.21.40.130 0:0:0:0:0:ffff:9015:2882
144.21.40.131 0:0:0:0:0:ffff:9015:2883
144.21.40.132 0:0:0:0:0:ffff:9015:2884
144.21.40.133 0:0:0:0:0:ffff:9015:2885
144.21.40.134 0:0:0:0:0:ffff:9015:2886
144.21.40.135 0:0:0:0:0:ffff:9015:2887
144.21.40.136 0:0:0:0:0:ffff:9015:2888
144.21.40.137 0:0:0:0:0:ffff:9015:2889
144.21.40.138 0:0:0:0:0:ffff:9015:288a
144.21.40.139 0:0:0:0:0:ffff:9015:288b
144.21.40.140 0:0:0:0:0:ffff:9015:288c
144.21.40.141 0:0:0:0:0:ffff:9015:288d
144.21.40.142 0:0:0:0:0:ffff:9015:288e
144.21.40.143 0:0:0:0:0:ffff:9015:288f
144.21.40.144 0:0:0:0:0:ffff:9015:2890
144.21.40.145 0:0:0:0:0:ffff:9015:2891
144.21.40.146 0:0:0:0:0:ffff:9015:2892
144.21.40.147 0:0:0:0:0:ffff:9015:2893
144.21.40.148 0:0:0:0:0:ffff:9015:2894
144.21.40.149 0:0:0:0:0:ffff:9015:2895
144.21.40.150 0:0:0:0:0:ffff:9015:2896
144.21.40.151 0:0:0:0:0:ffff:9015:2897
144.21.40.152 0:0:0:0:0:ffff:9015:2898
144.21.40.153 0:0:0:0:0:ffff:9015:2899
144.21.40.154 0:0:0:0:0:ffff:9015:289a
144.21.40.155 0:0:0:0:0:ffff:9015:289b
144.21.40.156 0:0:0:0:0:ffff:9015:289c
144.21.40.157 0:0:0:0:0:ffff:9015:289d
144.21.40.158 0:0:0:0:0:ffff:9015:289e
144.21.40.159 0:0:0:0:0:ffff:9015:289f
144.21.40.160 0:0:0:0:0:ffff:9015:28a0
144.21.40.161 0:0:0:0:0:ffff:9015:28a1
144.21.40.162 0:0:0:0:0:ffff:9015:28a2
144.21.40.163 0:0:0:0:0:ffff:9015:28a3
144.21.40.164 0:0:0:0:0:ffff:9015:28a4
144.21.40.165 0:0:0:0:0:ffff:9015:28a5
144.21.40.166 0:0:0:0:0:ffff:9015:28a6
144.21.40.167 0:0:0:0:0:ffff:9015:28a7
144.21.40.168 0:0:0:0:0:ffff:9015:28a8
144.21.40.169 0:0:0:0:0:ffff:9015:28a9
144.21.40.170 0:0:0:0:0:ffff:9015:28aa
144.21.40.171 0:0:0:0:0:ffff:9015:28ab
144.21.40.172 0:0:0:0:0:ffff:9015:28ac
144.21.40.173 0:0:0:0:0:ffff:9015:28ad
144.21.40.174 0:0:0:0:0:ffff:9015:28ae
144.21.40.175 0:0:0:0:0:ffff:9015:28af
144.21.40.176 0:0:0:0:0:ffff:9015:28b0
144.21.40.177 0:0:0:0:0:ffff:9015:28b1
144.21.40.178 0:0:0:0:0:ffff:9015:28b2
144.21.40.179 0:0:0:0:0:ffff:9015:28b3
144.21.40.180 0:0:0:0:0:ffff:9015:28b4


144.21.40.181 0:0:0:0:0:ffff:9015:28b5
144.21.40.182 0:0:0:0:0:ffff:9015:28b6
144.21.40.183 0:0:0:0:0:ffff:9015:28b7
144.21.40.184 0:0:0:0:0:ffff:9015:28b8
144.21.40.185 0:0:0:0:0:ffff:9015:28b9
144.21.40.186 0:0:0:0:0:ffff:9015:28ba
144.21.40.187 0:0:0:0:0:ffff:9015:28bb
144.21.40.188 0:0:0:0:0:ffff:9015:28bc
144.21.40.189 0:0:0:0:0:ffff:9015:28bd
144.21.40.190 0:0:0:0:0:ffff:9015:28be
144.21.40.191 0:0:0:0:0:ffff:9015:28bf
144.21.40.192 0:0:0:0:0:ffff:9015:28c0
144.21.40.193 0:0:0:0:0:ffff:9015:28c1
144.21.40.194 0:0:0:0:0:ffff:9015:28c2
144.21.40.195 0:0:0:0:0:ffff:9015:28c3
144.21.40.196 0:0:0:0:0:ffff:9015:28c4
144.21.40.197 0:0:0:0:0:ffff:9015:28c5
144.21.40.198 0:0:0:0:0:ffff:9015:28c6
144.21.40.199 0:0:0:0:0:ffff:9015:28c7
144.21.40.200 0:0:0:0:0:ffff:9015:28c8
144.21.40.201 0:0:0:0:0:ffff:9015:28c9
144.21.40.202 0:0:0:0:0:ffff:9015:28ca
144.21.40.203 0:0:0:0:0:ffff:9015:28cb
144.21.40.204 0:0:0:0:0:ffff:9015:28cc
144.21.40.205 0:0:0:0:0:ffff:9015:28cd
144.21.40.206 0:0:0:0:0:ffff:9015:28ce
144.21.40.207 0:0:0:0:0:ffff:9015:28cf
144.21.40.208 0:0:0:0:0:ffff:9015:28d0
144.21.40.209 0:0:0:0:0:ffff:9015:28d1
144.21.40.210 0:0:0:0:0:ffff:9015:28d2
144.21.40.211 0:0:0:0:0:ffff:9015:28d3
144.21.40.212 0:0:0:0:0:ffff:9015:28d4
144.21.40.213 0:0:0:0:0:ffff:9015:28d5
144.21.40.214 0:0:0:0:0:ffff:9015:28d6
144.21.40.215 0:0:0:0:0:ffff:9015:28d7
144.21.40.216 0:0:0:0:0:ffff:9015:28d8
144.21.40.217 0:0:0:0:0:ffff:9015:28d9
144.21.40.218 0:0:0:0:0:ffff:9015:28da
144.21.40.219 0:0:0:0:0:ffff:9015:28db
144.21.40.220 0:0:0:0:0:ffff:9015:28dc
144.21.40.221 0:0:0:0:0:ffff:9015:28dd
144.21.40.222 0:0:0:0:0:ffff:9015:28de
144.21.40.223 0:0:0:0:0:ffff:9015:28df
144.21.40.224 0:0:0:0:0:ffff:9015:28e0
144.21.40.225 0:0:0:0:0:ffff:9015:28e1
144.21.40.226 0:0:0:0:0:ffff:9015:28e2
144.21.40.227 0:0:0:0:0:ffff:9015:28e3
144.21.40.228 0:0:0:0:0:ffff:9015:28e4
144.21.40.229 0:0:0:0:0:ffff:9015:28e5
144.21.40.230 0:0:0:0:0:ffff:9015:28e6
144.21.40.231 0:0:0:0:0:ffff:9015:28e7
144.21.40.232 0:0:0:0:0:ffff:9015:28e8
144.21.40.233 0:0:0:0:0:ffff:9015:28e9
144.21.40.234 0:0:0:0:0:ffff:9015:28ea
144.21.40.235 0:0:0:0:0:ffff:9015:28eb
144.21.40.236 0:0:0:0:0:ffff:9015:28ec
144.21.40.237 0:0:0:0:0:ffff:9015:28ed
144.21.40.238 0:0:0:0:0:ffff:9015:28ee
144.21.40.239 0:0:0:0:0:ffff:9015:28ef
144.21.40.240 0:0:0:0:0:ffff:9015:28f0
144.21.40.241 0:0:0:0:0:ffff:9015:28f1
144.21.40.242 0:0:0:0:0:ffff:9015:28f2
144.21.40.243 0:0:0:0:0:ffff:9015:28f3
144.21.40.244 0:0:0:0:0:ffff:9015:28f4
144.21.40.245 0:0:0:0:0:ffff:9015:28f5
144.21.40.246 0:0:0:0:0:ffff:9015:28f6
144.21.40.247 0:0:0:0:0:ffff:9015:28f7
144.21.40.248 0:0:0:0:0:ffff:9015:28f8
144.21.40.249 0:0:0:0:0:ffff:9015:28f9
144.21.40.250 0:0:0:0:0:ffff:9015:28fa
144.21.40.251 0:0:0:0:0:ffff:9015:28fb
144.21.40.252 0:0:0:0:0:ffff:9015:28fc
144.21.40.253 0:0:0:0:0:ffff:9015:28fd
144.21.40.254 0:0:0:0:0:ffff:9015:28fe
144.21.40.255 0:0:0:0:0:ffff:9015:28ff


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.