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
65.121.38.1 0:0:0:0:0:ffff:4179:2601
65.121.38.2 0:0:0:0:0:ffff:4179:2602
65.121.38.3 0:0:0:0:0:ffff:4179:2603
65.121.38.4 0:0:0:0:0:ffff:4179:2604
65.121.38.5 0:0:0:0:0:ffff:4179:2605
65.121.38.6 0:0:0:0:0:ffff:4179:2606
65.121.38.7 0:0:0:0:0:ffff:4179:2607
65.121.38.8 0:0:0:0:0:ffff:4179:2608
65.121.38.9 0:0:0:0:0:ffff:4179:2609
65.121.38.10 0:0:0:0:0:ffff:4179:260a
65.121.38.11 0:0:0:0:0:ffff:4179:260b
65.121.38.12 0:0:0:0:0:ffff:4179:260c
65.121.38.13 0:0:0:0:0:ffff:4179:260d
65.121.38.14 0:0:0:0:0:ffff:4179:260e
65.121.38.15 0:0:0:0:0:ffff:4179:260f
65.121.38.16 0:0:0:0:0:ffff:4179:2610
65.121.38.17 0:0:0:0:0:ffff:4179:2611
65.121.38.18 0:0:0:0:0:ffff:4179:2612
65.121.38.19 0:0:0:0:0:ffff:4179:2613
65.121.38.20 0:0:0:0:0:ffff:4179:2614
65.121.38.21 0:0:0:0:0:ffff:4179:2615
65.121.38.22 0:0:0:0:0:ffff:4179:2616
65.121.38.23 0:0:0:0:0:ffff:4179:2617
65.121.38.24 0:0:0:0:0:ffff:4179:2618
65.121.38.25 0:0:0:0:0:ffff:4179:2619
65.121.38.26 0:0:0:0:0:ffff:4179:261a
65.121.38.27 0:0:0:0:0:ffff:4179:261b
65.121.38.28 0:0:0:0:0:ffff:4179:261c
65.121.38.29 0:0:0:0:0:ffff:4179:261d
65.121.38.30 0:0:0:0:0:ffff:4179:261e
65.121.38.31 0:0:0:0:0:ffff:4179:261f
65.121.38.32 0:0:0:0:0:ffff:4179:2620
65.121.38.33 0:0:0:0:0:ffff:4179:2621
65.121.38.34 0:0:0:0:0:ffff:4179:2622
65.121.38.35 0:0:0:0:0:ffff:4179:2623
65.121.38.36 0:0:0:0:0:ffff:4179:2624
65.121.38.37 0:0:0:0:0:ffff:4179:2625
65.121.38.38 0:0:0:0:0:ffff:4179:2626
65.121.38.39 0:0:0:0:0:ffff:4179:2627
65.121.38.40 0:0:0:0:0:ffff:4179:2628
65.121.38.41 0:0:0:0:0:ffff:4179:2629
65.121.38.42 0:0:0:0:0:ffff:4179:262a
65.121.38.43 0:0:0:0:0:ffff:4179:262b
65.121.38.44 0:0:0:0:0:ffff:4179:262c
65.121.38.45 0:0:0:0:0:ffff:4179:262d
65.121.38.46 0:0:0:0:0:ffff:4179:262e
65.121.38.47 0:0:0:0:0:ffff:4179:262f
65.121.38.48 0:0:0:0:0:ffff:4179:2630
65.121.38.49 0:0:0:0:0:ffff:4179:2631
65.121.38.50 0:0:0:0:0:ffff:4179:2632
65.121.38.51 0:0:0:0:0:ffff:4179:2633
65.121.38.52 0:0:0:0:0:ffff:4179:2634
65.121.38.53 0:0:0:0:0:ffff:4179:2635
65.121.38.54 0:0:0:0:0:ffff:4179:2636
65.121.38.55 0:0:0:0:0:ffff:4179:2637
65.121.38.56 0:0:0:0:0:ffff:4179:2638
65.121.38.57 0:0:0:0:0:ffff:4179:2639
65.121.38.58 0:0:0:0:0:ffff:4179:263a
65.121.38.59 0:0:0:0:0:ffff:4179:263b
65.121.38.60 0:0:0:0:0:ffff:4179:263c


65.121.38.61 0:0:0:0:0:ffff:4179:263d
65.121.38.62 0:0:0:0:0:ffff:4179:263e
65.121.38.63 0:0:0:0:0:ffff:4179:263f
65.121.38.64 0:0:0:0:0:ffff:4179:2640
65.121.38.65 0:0:0:0:0:ffff:4179:2641
65.121.38.66 0:0:0:0:0:ffff:4179:2642
65.121.38.67 0:0:0:0:0:ffff:4179:2643
65.121.38.68 0:0:0:0:0:ffff:4179:2644
65.121.38.69 0:0:0:0:0:ffff:4179:2645
65.121.38.70 0:0:0:0:0:ffff:4179:2646
65.121.38.71 0:0:0:0:0:ffff:4179:2647
65.121.38.72 0:0:0:0:0:ffff:4179:2648
65.121.38.73 0:0:0:0:0:ffff:4179:2649
65.121.38.74 0:0:0:0:0:ffff:4179:264a
65.121.38.75 0:0:0:0:0:ffff:4179:264b
65.121.38.76 0:0:0:0:0:ffff:4179:264c
65.121.38.77 0:0:0:0:0:ffff:4179:264d
65.121.38.78 0:0:0:0:0:ffff:4179:264e
65.121.38.79 0:0:0:0:0:ffff:4179:264f
65.121.38.80 0:0:0:0:0:ffff:4179:2650
65.121.38.81 0:0:0:0:0:ffff:4179:2651
65.121.38.82 0:0:0:0:0:ffff:4179:2652
65.121.38.83 0:0:0:0:0:ffff:4179:2653
65.121.38.84 0:0:0:0:0:ffff:4179:2654
65.121.38.85 0:0:0:0:0:ffff:4179:2655
65.121.38.86 0:0:0:0:0:ffff:4179:2656
65.121.38.87 0:0:0:0:0:ffff:4179:2657
65.121.38.88 0:0:0:0:0:ffff:4179:2658
65.121.38.89 0:0:0:0:0:ffff:4179:2659
65.121.38.90 0:0:0:0:0:ffff:4179:265a
65.121.38.91 0:0:0:0:0:ffff:4179:265b
65.121.38.92 0:0:0:0:0:ffff:4179:265c
65.121.38.93 0:0:0:0:0:ffff:4179:265d
65.121.38.94 0:0:0:0:0:ffff:4179:265e
65.121.38.95 0:0:0:0:0:ffff:4179:265f
65.121.38.96 0:0:0:0:0:ffff:4179:2660
65.121.38.97 0:0:0:0:0:ffff:4179:2661
65.121.38.98 0:0:0:0:0:ffff:4179:2662
65.121.38.99 0:0:0:0:0:ffff:4179:2663
65.121.38.100 0:0:0:0:0:ffff:4179:2664
65.121.38.101 0:0:0:0:0:ffff:4179:2665
65.121.38.102 0:0:0:0:0:ffff:4179:2666
65.121.38.103 0:0:0:0:0:ffff:4179:2667
65.121.38.104 0:0:0:0:0:ffff:4179:2668
65.121.38.105 0:0:0:0:0:ffff:4179:2669
65.121.38.106 0:0:0:0:0:ffff:4179:266a
65.121.38.107 0:0:0:0:0:ffff:4179:266b
65.121.38.108 0:0:0:0:0:ffff:4179:266c
65.121.38.109 0:0:0:0:0:ffff:4179:266d
65.121.38.110 0:0:0:0:0:ffff:4179:266e
65.121.38.111 0:0:0:0:0:ffff:4179:266f
65.121.38.112 0:0:0:0:0:ffff:4179:2670
65.121.38.113 0:0:0:0:0:ffff:4179:2671
65.121.38.114 0:0:0:0:0:ffff:4179:2672
65.121.38.115 0:0:0:0:0:ffff:4179:2673
65.121.38.116 0:0:0:0:0:ffff:4179:2674
65.121.38.117 0:0:0:0:0:ffff:4179:2675
65.121.38.118 0:0:0:0:0:ffff:4179:2676
65.121.38.119 0:0:0:0:0:ffff:4179:2677
65.121.38.120 0:0:0:0:0:ffff:4179:2678


65.121.38.121 0:0:0:0:0:ffff:4179:2679
65.121.38.122 0:0:0:0:0:ffff:4179:267a
65.121.38.123 0:0:0:0:0:ffff:4179:267b
65.121.38.124 0:0:0:0:0:ffff:4179:267c
65.121.38.125 0:0:0:0:0:ffff:4179:267d
65.121.38.126 0:0:0:0:0:ffff:4179:267e
65.121.38.127 0:0:0:0:0:ffff:4179:267f
65.121.38.128 0:0:0:0:0:ffff:4179:2680
65.121.38.129 0:0:0:0:0:ffff:4179:2681
65.121.38.130 0:0:0:0:0:ffff:4179:2682
65.121.38.131 0:0:0:0:0:ffff:4179:2683
65.121.38.132 0:0:0:0:0:ffff:4179:2684
65.121.38.133 0:0:0:0:0:ffff:4179:2685
65.121.38.134 0:0:0:0:0:ffff:4179:2686
65.121.38.135 0:0:0:0:0:ffff:4179:2687
65.121.38.136 0:0:0:0:0:ffff:4179:2688
65.121.38.137 0:0:0:0:0:ffff:4179:2689
65.121.38.138 0:0:0:0:0:ffff:4179:268a
65.121.38.139 0:0:0:0:0:ffff:4179:268b
65.121.38.140 0:0:0:0:0:ffff:4179:268c
65.121.38.141 0:0:0:0:0:ffff:4179:268d
65.121.38.142 0:0:0:0:0:ffff:4179:268e
65.121.38.143 0:0:0:0:0:ffff:4179:268f
65.121.38.144 0:0:0:0:0:ffff:4179:2690
65.121.38.145 0:0:0:0:0:ffff:4179:2691
65.121.38.146 0:0:0:0:0:ffff:4179:2692
65.121.38.147 0:0:0:0:0:ffff:4179:2693
65.121.38.148 0:0:0:0:0:ffff:4179:2694
65.121.38.149 0:0:0:0:0:ffff:4179:2695
65.121.38.150 0:0:0:0:0:ffff:4179:2696
65.121.38.151 0:0:0:0:0:ffff:4179:2697
65.121.38.152 0:0:0:0:0:ffff:4179:2698
65.121.38.153 0:0:0:0:0:ffff:4179:2699
65.121.38.154 0:0:0:0:0:ffff:4179:269a
65.121.38.155 0:0:0:0:0:ffff:4179:269b
65.121.38.156 0:0:0:0:0:ffff:4179:269c
65.121.38.157 0:0:0:0:0:ffff:4179:269d
65.121.38.158 0:0:0:0:0:ffff:4179:269e
65.121.38.159 0:0:0:0:0:ffff:4179:269f
65.121.38.160 0:0:0:0:0:ffff:4179:26a0
65.121.38.161 0:0:0:0:0:ffff:4179:26a1
65.121.38.162 0:0:0:0:0:ffff:4179:26a2
65.121.38.163 0:0:0:0:0:ffff:4179:26a3
65.121.38.164 0:0:0:0:0:ffff:4179:26a4
65.121.38.165 0:0:0:0:0:ffff:4179:26a5
65.121.38.166 0:0:0:0:0:ffff:4179:26a6
65.121.38.167 0:0:0:0:0:ffff:4179:26a7
65.121.38.168 0:0:0:0:0:ffff:4179:26a8
65.121.38.169 0:0:0:0:0:ffff:4179:26a9
65.121.38.170 0:0:0:0:0:ffff:4179:26aa
65.121.38.171 0:0:0:0:0:ffff:4179:26ab
65.121.38.172 0:0:0:0:0:ffff:4179:26ac
65.121.38.173 0:0:0:0:0:ffff:4179:26ad
65.121.38.174 0:0:0:0:0:ffff:4179:26ae
65.121.38.175 0:0:0:0:0:ffff:4179:26af
65.121.38.176 0:0:0:0:0:ffff:4179:26b0
65.121.38.177 0:0:0:0:0:ffff:4179:26b1
65.121.38.178 0:0:0:0:0:ffff:4179:26b2
65.121.38.179 0:0:0:0:0:ffff:4179:26b3
65.121.38.180 0:0:0:0:0:ffff:4179:26b4


65.121.38.181 0:0:0:0:0:ffff:4179:26b5
65.121.38.182 0:0:0:0:0:ffff:4179:26b6
65.121.38.183 0:0:0:0:0:ffff:4179:26b7
65.121.38.184 0:0:0:0:0:ffff:4179:26b8
65.121.38.185 0:0:0:0:0:ffff:4179:26b9
65.121.38.186 0:0:0:0:0:ffff:4179:26ba
65.121.38.187 0:0:0:0:0:ffff:4179:26bb
65.121.38.188 0:0:0:0:0:ffff:4179:26bc
65.121.38.189 0:0:0:0:0:ffff:4179:26bd
65.121.38.190 0:0:0:0:0:ffff:4179:26be
65.121.38.191 0:0:0:0:0:ffff:4179:26bf
65.121.38.192 0:0:0:0:0:ffff:4179:26c0
65.121.38.193 0:0:0:0:0:ffff:4179:26c1
65.121.38.194 0:0:0:0:0:ffff:4179:26c2
65.121.38.195 0:0:0:0:0:ffff:4179:26c3
65.121.38.196 0:0:0:0:0:ffff:4179:26c4
65.121.38.197 0:0:0:0:0:ffff:4179:26c5
65.121.38.198 0:0:0:0:0:ffff:4179:26c6
65.121.38.199 0:0:0:0:0:ffff:4179:26c7
65.121.38.200 0:0:0:0:0:ffff:4179:26c8
65.121.38.201 0:0:0:0:0:ffff:4179:26c9
65.121.38.202 0:0:0:0:0:ffff:4179:26ca
65.121.38.203 0:0:0:0:0:ffff:4179:26cb
65.121.38.204 0:0:0:0:0:ffff:4179:26cc
65.121.38.205 0:0:0:0:0:ffff:4179:26cd
65.121.38.206 0:0:0:0:0:ffff:4179:26ce
65.121.38.207 0:0:0:0:0:ffff:4179:26cf
65.121.38.208 0:0:0:0:0:ffff:4179:26d0
65.121.38.209 0:0:0:0:0:ffff:4179:26d1
65.121.38.210 0:0:0:0:0:ffff:4179:26d2
65.121.38.211 0:0:0:0:0:ffff:4179:26d3
65.121.38.212 0:0:0:0:0:ffff:4179:26d4
65.121.38.213 0:0:0:0:0:ffff:4179:26d5
65.121.38.214 0:0:0:0:0:ffff:4179:26d6
65.121.38.215 0:0:0:0:0:ffff:4179:26d7
65.121.38.216 0:0:0:0:0:ffff:4179:26d8
65.121.38.217 0:0:0:0:0:ffff:4179:26d9
65.121.38.218 0:0:0:0:0:ffff:4179:26da
65.121.38.219 0:0:0:0:0:ffff:4179:26db
65.121.38.220 0:0:0:0:0:ffff:4179:26dc
65.121.38.221 0:0:0:0:0:ffff:4179:26dd
65.121.38.222 0:0:0:0:0:ffff:4179:26de
65.121.38.223 0:0:0:0:0:ffff:4179:26df
65.121.38.224 0:0:0:0:0:ffff:4179:26e0
65.121.38.225 0:0:0:0:0:ffff:4179:26e1
65.121.38.226 0:0:0:0:0:ffff:4179:26e2
65.121.38.227 0:0:0:0:0:ffff:4179:26e3
65.121.38.228 0:0:0:0:0:ffff:4179:26e4
65.121.38.229 0:0:0:0:0:ffff:4179:26e5
65.121.38.230 0:0:0:0:0:ffff:4179:26e6
65.121.38.231 0:0:0:0:0:ffff:4179:26e7
65.121.38.232 0:0:0:0:0:ffff:4179:26e8
65.121.38.233 0:0:0:0:0:ffff:4179:26e9
65.121.38.234 0:0:0:0:0:ffff:4179:26ea
65.121.38.235 0:0:0:0:0:ffff:4179:26eb
65.121.38.236 0:0:0:0:0:ffff:4179:26ec
65.121.38.237 0:0:0:0:0:ffff:4179:26ed
65.121.38.238 0:0:0:0:0:ffff:4179:26ee
65.121.38.239 0:0:0:0:0:ffff:4179:26ef
65.121.38.240 0:0:0:0:0:ffff:4179:26f0
65.121.38.241 0:0:0:0:0:ffff:4179:26f1
65.121.38.242 0:0:0:0:0:ffff:4179:26f2
65.121.38.243 0:0:0:0:0:ffff:4179:26f3
65.121.38.244 0:0:0:0:0:ffff:4179:26f4
65.121.38.245 0:0:0:0:0:ffff:4179:26f5
65.121.38.246 0:0:0:0:0:ffff:4179:26f6
65.121.38.247 0:0:0:0:0:ffff:4179:26f7
65.121.38.248 0:0:0:0:0:ffff:4179:26f8
65.121.38.249 0:0:0:0:0:ffff:4179:26f9
65.121.38.250 0:0:0:0:0:ffff:4179:26fa
65.121.38.251 0:0:0:0:0:ffff:4179:26fb
65.121.38.252 0:0:0:0:0:ffff:4179:26fc
65.121.38.253 0:0:0:0:0:ffff:4179:26fd
65.121.38.254 0:0:0:0:0:ffff:4179:26fe
65.121.38.255 0:0:0:0:0:ffff:4179:26ff


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.