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
81.61.54.1 0:0:0:0:0:ffff:513d:3601
81.61.54.2 0:0:0:0:0:ffff:513d:3602
81.61.54.3 0:0:0:0:0:ffff:513d:3603
81.61.54.4 0:0:0:0:0:ffff:513d:3604
81.61.54.5 0:0:0:0:0:ffff:513d:3605
81.61.54.6 0:0:0:0:0:ffff:513d:3606
81.61.54.7 0:0:0:0:0:ffff:513d:3607
81.61.54.8 0:0:0:0:0:ffff:513d:3608
81.61.54.9 0:0:0:0:0:ffff:513d:3609
81.61.54.10 0:0:0:0:0:ffff:513d:360a
81.61.54.11 0:0:0:0:0:ffff:513d:360b
81.61.54.12 0:0:0:0:0:ffff:513d:360c
81.61.54.13 0:0:0:0:0:ffff:513d:360d
81.61.54.14 0:0:0:0:0:ffff:513d:360e
81.61.54.15 0:0:0:0:0:ffff:513d:360f
81.61.54.16 0:0:0:0:0:ffff:513d:3610
81.61.54.17 0:0:0:0:0:ffff:513d:3611
81.61.54.18 0:0:0:0:0:ffff:513d:3612
81.61.54.19 0:0:0:0:0:ffff:513d:3613
81.61.54.20 0:0:0:0:0:ffff:513d:3614
81.61.54.21 0:0:0:0:0:ffff:513d:3615
81.61.54.22 0:0:0:0:0:ffff:513d:3616
81.61.54.23 0:0:0:0:0:ffff:513d:3617
81.61.54.24 0:0:0:0:0:ffff:513d:3618
81.61.54.25 0:0:0:0:0:ffff:513d:3619
81.61.54.26 0:0:0:0:0:ffff:513d:361a
81.61.54.27 0:0:0:0:0:ffff:513d:361b
81.61.54.28 0:0:0:0:0:ffff:513d:361c
81.61.54.29 0:0:0:0:0:ffff:513d:361d
81.61.54.30 0:0:0:0:0:ffff:513d:361e
81.61.54.31 0:0:0:0:0:ffff:513d:361f
81.61.54.32 0:0:0:0:0:ffff:513d:3620
81.61.54.33 0:0:0:0:0:ffff:513d:3621
81.61.54.34 0:0:0:0:0:ffff:513d:3622
81.61.54.35 0:0:0:0:0:ffff:513d:3623
81.61.54.36 0:0:0:0:0:ffff:513d:3624
81.61.54.37 0:0:0:0:0:ffff:513d:3625
81.61.54.38 0:0:0:0:0:ffff:513d:3626
81.61.54.39 0:0:0:0:0:ffff:513d:3627
81.61.54.40 0:0:0:0:0:ffff:513d:3628
81.61.54.41 0:0:0:0:0:ffff:513d:3629
81.61.54.42 0:0:0:0:0:ffff:513d:362a
81.61.54.43 0:0:0:0:0:ffff:513d:362b
81.61.54.44 0:0:0:0:0:ffff:513d:362c
81.61.54.45 0:0:0:0:0:ffff:513d:362d
81.61.54.46 0:0:0:0:0:ffff:513d:362e
81.61.54.47 0:0:0:0:0:ffff:513d:362f
81.61.54.48 0:0:0:0:0:ffff:513d:3630
81.61.54.49 0:0:0:0:0:ffff:513d:3631
81.61.54.50 0:0:0:0:0:ffff:513d:3632
81.61.54.51 0:0:0:0:0:ffff:513d:3633
81.61.54.52 0:0:0:0:0:ffff:513d:3634
81.61.54.53 0:0:0:0:0:ffff:513d:3635
81.61.54.54 0:0:0:0:0:ffff:513d:3636
81.61.54.55 0:0:0:0:0:ffff:513d:3637
81.61.54.56 0:0:0:0:0:ffff:513d:3638
81.61.54.57 0:0:0:0:0:ffff:513d:3639
81.61.54.58 0:0:0:0:0:ffff:513d:363a
81.61.54.59 0:0:0:0:0:ffff:513d:363b
81.61.54.60 0:0:0:0:0:ffff:513d:363c


81.61.54.61 0:0:0:0:0:ffff:513d:363d
81.61.54.62 0:0:0:0:0:ffff:513d:363e
81.61.54.63 0:0:0:0:0:ffff:513d:363f
81.61.54.64 0:0:0:0:0:ffff:513d:3640
81.61.54.65 0:0:0:0:0:ffff:513d:3641
81.61.54.66 0:0:0:0:0:ffff:513d:3642
81.61.54.67 0:0:0:0:0:ffff:513d:3643
81.61.54.68 0:0:0:0:0:ffff:513d:3644
81.61.54.69 0:0:0:0:0:ffff:513d:3645
81.61.54.70 0:0:0:0:0:ffff:513d:3646
81.61.54.71 0:0:0:0:0:ffff:513d:3647
81.61.54.72 0:0:0:0:0:ffff:513d:3648
81.61.54.73 0:0:0:0:0:ffff:513d:3649
81.61.54.74 0:0:0:0:0:ffff:513d:364a
81.61.54.75 0:0:0:0:0:ffff:513d:364b
81.61.54.76 0:0:0:0:0:ffff:513d:364c
81.61.54.77 0:0:0:0:0:ffff:513d:364d
81.61.54.78 0:0:0:0:0:ffff:513d:364e
81.61.54.79 0:0:0:0:0:ffff:513d:364f
81.61.54.80 0:0:0:0:0:ffff:513d:3650
81.61.54.81 0:0:0:0:0:ffff:513d:3651
81.61.54.82 0:0:0:0:0:ffff:513d:3652
81.61.54.83 0:0:0:0:0:ffff:513d:3653
81.61.54.84 0:0:0:0:0:ffff:513d:3654
81.61.54.85 0:0:0:0:0:ffff:513d:3655
81.61.54.86 0:0:0:0:0:ffff:513d:3656
81.61.54.87 0:0:0:0:0:ffff:513d:3657
81.61.54.88 0:0:0:0:0:ffff:513d:3658
81.61.54.89 0:0:0:0:0:ffff:513d:3659
81.61.54.90 0:0:0:0:0:ffff:513d:365a
81.61.54.91 0:0:0:0:0:ffff:513d:365b
81.61.54.92 0:0:0:0:0:ffff:513d:365c
81.61.54.93 0:0:0:0:0:ffff:513d:365d
81.61.54.94 0:0:0:0:0:ffff:513d:365e
81.61.54.95 0:0:0:0:0:ffff:513d:365f
81.61.54.96 0:0:0:0:0:ffff:513d:3660
81.61.54.97 0:0:0:0:0:ffff:513d:3661
81.61.54.98 0:0:0:0:0:ffff:513d:3662
81.61.54.99 0:0:0:0:0:ffff:513d:3663
81.61.54.100 0:0:0:0:0:ffff:513d:3664
81.61.54.101 0:0:0:0:0:ffff:513d:3665
81.61.54.102 0:0:0:0:0:ffff:513d:3666
81.61.54.103 0:0:0:0:0:ffff:513d:3667
81.61.54.104 0:0:0:0:0:ffff:513d:3668
81.61.54.105 0:0:0:0:0:ffff:513d:3669
81.61.54.106 0:0:0:0:0:ffff:513d:366a
81.61.54.107 0:0:0:0:0:ffff:513d:366b
81.61.54.108 0:0:0:0:0:ffff:513d:366c
81.61.54.109 0:0:0:0:0:ffff:513d:366d
81.61.54.110 0:0:0:0:0:ffff:513d:366e
81.61.54.111 0:0:0:0:0:ffff:513d:366f
81.61.54.112 0:0:0:0:0:ffff:513d:3670
81.61.54.113 0:0:0:0:0:ffff:513d:3671
81.61.54.114 0:0:0:0:0:ffff:513d:3672
81.61.54.115 0:0:0:0:0:ffff:513d:3673
81.61.54.116 0:0:0:0:0:ffff:513d:3674
81.61.54.117 0:0:0:0:0:ffff:513d:3675
81.61.54.118 0:0:0:0:0:ffff:513d:3676
81.61.54.119 0:0:0:0:0:ffff:513d:3677
81.61.54.120 0:0:0:0:0:ffff:513d:3678


81.61.54.121 0:0:0:0:0:ffff:513d:3679
81.61.54.122 0:0:0:0:0:ffff:513d:367a
81.61.54.123 0:0:0:0:0:ffff:513d:367b
81.61.54.124 0:0:0:0:0:ffff:513d:367c
81.61.54.125 0:0:0:0:0:ffff:513d:367d
81.61.54.126 0:0:0:0:0:ffff:513d:367e
81.61.54.127 0:0:0:0:0:ffff:513d:367f
81.61.54.128 0:0:0:0:0:ffff:513d:3680
81.61.54.129 0:0:0:0:0:ffff:513d:3681
81.61.54.130 0:0:0:0:0:ffff:513d:3682
81.61.54.131 0:0:0:0:0:ffff:513d:3683
81.61.54.132 0:0:0:0:0:ffff:513d:3684
81.61.54.133 0:0:0:0:0:ffff:513d:3685
81.61.54.134 0:0:0:0:0:ffff:513d:3686
81.61.54.135 0:0:0:0:0:ffff:513d:3687
81.61.54.136 0:0:0:0:0:ffff:513d:3688
81.61.54.137 0:0:0:0:0:ffff:513d:3689
81.61.54.138 0:0:0:0:0:ffff:513d:368a
81.61.54.139 0:0:0:0:0:ffff:513d:368b
81.61.54.140 0:0:0:0:0:ffff:513d:368c
81.61.54.141 0:0:0:0:0:ffff:513d:368d
81.61.54.142 0:0:0:0:0:ffff:513d:368e
81.61.54.143 0:0:0:0:0:ffff:513d:368f
81.61.54.144 0:0:0:0:0:ffff:513d:3690
81.61.54.145 0:0:0:0:0:ffff:513d:3691
81.61.54.146 0:0:0:0:0:ffff:513d:3692
81.61.54.147 0:0:0:0:0:ffff:513d:3693
81.61.54.148 0:0:0:0:0:ffff:513d:3694
81.61.54.149 0:0:0:0:0:ffff:513d:3695
81.61.54.150 0:0:0:0:0:ffff:513d:3696
81.61.54.151 0:0:0:0:0:ffff:513d:3697
81.61.54.152 0:0:0:0:0:ffff:513d:3698
81.61.54.153 0:0:0:0:0:ffff:513d:3699
81.61.54.154 0:0:0:0:0:ffff:513d:369a
81.61.54.155 0:0:0:0:0:ffff:513d:369b
81.61.54.156 0:0:0:0:0:ffff:513d:369c
81.61.54.157 0:0:0:0:0:ffff:513d:369d
81.61.54.158 0:0:0:0:0:ffff:513d:369e
81.61.54.159 0:0:0:0:0:ffff:513d:369f
81.61.54.160 0:0:0:0:0:ffff:513d:36a0
81.61.54.161 0:0:0:0:0:ffff:513d:36a1
81.61.54.162 0:0:0:0:0:ffff:513d:36a2
81.61.54.163 0:0:0:0:0:ffff:513d:36a3
81.61.54.164 0:0:0:0:0:ffff:513d:36a4
81.61.54.165 0:0:0:0:0:ffff:513d:36a5
81.61.54.166 0:0:0:0:0:ffff:513d:36a6
81.61.54.167 0:0:0:0:0:ffff:513d:36a7
81.61.54.168 0:0:0:0:0:ffff:513d:36a8
81.61.54.169 0:0:0:0:0:ffff:513d:36a9
81.61.54.170 0:0:0:0:0:ffff:513d:36aa
81.61.54.171 0:0:0:0:0:ffff:513d:36ab
81.61.54.172 0:0:0:0:0:ffff:513d:36ac
81.61.54.173 0:0:0:0:0:ffff:513d:36ad
81.61.54.174 0:0:0:0:0:ffff:513d:36ae
81.61.54.175 0:0:0:0:0:ffff:513d:36af
81.61.54.176 0:0:0:0:0:ffff:513d:36b0
81.61.54.177 0:0:0:0:0:ffff:513d:36b1
81.61.54.178 0:0:0:0:0:ffff:513d:36b2
81.61.54.179 0:0:0:0:0:ffff:513d:36b3
81.61.54.180 0:0:0:0:0:ffff:513d:36b4


81.61.54.181 0:0:0:0:0:ffff:513d:36b5
81.61.54.182 0:0:0:0:0:ffff:513d:36b6
81.61.54.183 0:0:0:0:0:ffff:513d:36b7
81.61.54.184 0:0:0:0:0:ffff:513d:36b8
81.61.54.185 0:0:0:0:0:ffff:513d:36b9
81.61.54.186 0:0:0:0:0:ffff:513d:36ba
81.61.54.187 0:0:0:0:0:ffff:513d:36bb
81.61.54.188 0:0:0:0:0:ffff:513d:36bc
81.61.54.189 0:0:0:0:0:ffff:513d:36bd
81.61.54.190 0:0:0:0:0:ffff:513d:36be
81.61.54.191 0:0:0:0:0:ffff:513d:36bf
81.61.54.192 0:0:0:0:0:ffff:513d:36c0
81.61.54.193 0:0:0:0:0:ffff:513d:36c1
81.61.54.194 0:0:0:0:0:ffff:513d:36c2
81.61.54.195 0:0:0:0:0:ffff:513d:36c3
81.61.54.196 0:0:0:0:0:ffff:513d:36c4
81.61.54.197 0:0:0:0:0:ffff:513d:36c5
81.61.54.198 0:0:0:0:0:ffff:513d:36c6
81.61.54.199 0:0:0:0:0:ffff:513d:36c7
81.61.54.200 0:0:0:0:0:ffff:513d:36c8
81.61.54.201 0:0:0:0:0:ffff:513d:36c9
81.61.54.202 0:0:0:0:0:ffff:513d:36ca
81.61.54.203 0:0:0:0:0:ffff:513d:36cb
81.61.54.204 0:0:0:0:0:ffff:513d:36cc
81.61.54.205 0:0:0:0:0:ffff:513d:36cd
81.61.54.206 0:0:0:0:0:ffff:513d:36ce
81.61.54.207 0:0:0:0:0:ffff:513d:36cf
81.61.54.208 0:0:0:0:0:ffff:513d:36d0
81.61.54.209 0:0:0:0:0:ffff:513d:36d1
81.61.54.210 0:0:0:0:0:ffff:513d:36d2
81.61.54.211 0:0:0:0:0:ffff:513d:36d3
81.61.54.212 0:0:0:0:0:ffff:513d:36d4
81.61.54.213 0:0:0:0:0:ffff:513d:36d5
81.61.54.214 0:0:0:0:0:ffff:513d:36d6
81.61.54.215 0:0:0:0:0:ffff:513d:36d7
81.61.54.216 0:0:0:0:0:ffff:513d:36d8
81.61.54.217 0:0:0:0:0:ffff:513d:36d9
81.61.54.218 0:0:0:0:0:ffff:513d:36da
81.61.54.219 0:0:0:0:0:ffff:513d:36db
81.61.54.220 0:0:0:0:0:ffff:513d:36dc
81.61.54.221 0:0:0:0:0:ffff:513d:36dd
81.61.54.222 0:0:0:0:0:ffff:513d:36de
81.61.54.223 0:0:0:0:0:ffff:513d:36df
81.61.54.224 0:0:0:0:0:ffff:513d:36e0
81.61.54.225 0:0:0:0:0:ffff:513d:36e1
81.61.54.226 0:0:0:0:0:ffff:513d:36e2
81.61.54.227 0:0:0:0:0:ffff:513d:36e3
81.61.54.228 0:0:0:0:0:ffff:513d:36e4
81.61.54.229 0:0:0:0:0:ffff:513d:36e5
81.61.54.230 0:0:0:0:0:ffff:513d:36e6
81.61.54.231 0:0:0:0:0:ffff:513d:36e7
81.61.54.232 0:0:0:0:0:ffff:513d:36e8
81.61.54.233 0:0:0:0:0:ffff:513d:36e9
81.61.54.234 0:0:0:0:0:ffff:513d:36ea
81.61.54.235 0:0:0:0:0:ffff:513d:36eb
81.61.54.236 0:0:0:0:0:ffff:513d:36ec
81.61.54.237 0:0:0:0:0:ffff:513d:36ed
81.61.54.238 0:0:0:0:0:ffff:513d:36ee
81.61.54.239 0:0:0:0:0:ffff:513d:36ef
81.61.54.240 0:0:0:0:0:ffff:513d:36f0
81.61.54.241 0:0:0:0:0:ffff:513d:36f1
81.61.54.242 0:0:0:0:0:ffff:513d:36f2
81.61.54.243 0:0:0:0:0:ffff:513d:36f3
81.61.54.244 0:0:0:0:0:ffff:513d:36f4
81.61.54.245 0:0:0:0:0:ffff:513d:36f5
81.61.54.246 0:0:0:0:0:ffff:513d:36f6
81.61.54.247 0:0:0:0:0:ffff:513d:36f7
81.61.54.248 0:0:0:0:0:ffff:513d:36f8
81.61.54.249 0:0:0:0:0:ffff:513d:36f9
81.61.54.250 0:0:0:0:0:ffff:513d:36fa
81.61.54.251 0:0:0:0:0:ffff:513d:36fb
81.61.54.252 0:0:0:0:0:ffff:513d:36fc
81.61.54.253 0:0:0:0:0:ffff:513d:36fd
81.61.54.254 0:0:0:0:0:ffff:513d:36fe
81.61.54.255 0:0:0:0:0:ffff:513d:36ff


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.