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
100.3.101.1 0:0:0:0:0:ffff:6403:6501
100.3.101.2 0:0:0:0:0:ffff:6403:6502
100.3.101.3 0:0:0:0:0:ffff:6403:6503
100.3.101.4 0:0:0:0:0:ffff:6403:6504
100.3.101.5 0:0:0:0:0:ffff:6403:6505
100.3.101.6 0:0:0:0:0:ffff:6403:6506
100.3.101.7 0:0:0:0:0:ffff:6403:6507
100.3.101.8 0:0:0:0:0:ffff:6403:6508
100.3.101.9 0:0:0:0:0:ffff:6403:6509
100.3.101.10 0:0:0:0:0:ffff:6403:650a
100.3.101.11 0:0:0:0:0:ffff:6403:650b
100.3.101.12 0:0:0:0:0:ffff:6403:650c
100.3.101.13 0:0:0:0:0:ffff:6403:650d
100.3.101.14 0:0:0:0:0:ffff:6403:650e
100.3.101.15 0:0:0:0:0:ffff:6403:650f
100.3.101.16 0:0:0:0:0:ffff:6403:6510
100.3.101.17 0:0:0:0:0:ffff:6403:6511
100.3.101.18 0:0:0:0:0:ffff:6403:6512
100.3.101.19 0:0:0:0:0:ffff:6403:6513
100.3.101.20 0:0:0:0:0:ffff:6403:6514
100.3.101.21 0:0:0:0:0:ffff:6403:6515
100.3.101.22 0:0:0:0:0:ffff:6403:6516
100.3.101.23 0:0:0:0:0:ffff:6403:6517
100.3.101.24 0:0:0:0:0:ffff:6403:6518
100.3.101.25 0:0:0:0:0:ffff:6403:6519
100.3.101.26 0:0:0:0:0:ffff:6403:651a
100.3.101.27 0:0:0:0:0:ffff:6403:651b
100.3.101.28 0:0:0:0:0:ffff:6403:651c
100.3.101.29 0:0:0:0:0:ffff:6403:651d
100.3.101.30 0:0:0:0:0:ffff:6403:651e
100.3.101.31 0:0:0:0:0:ffff:6403:651f
100.3.101.32 0:0:0:0:0:ffff:6403:6520
100.3.101.33 0:0:0:0:0:ffff:6403:6521
100.3.101.34 0:0:0:0:0:ffff:6403:6522
100.3.101.35 0:0:0:0:0:ffff:6403:6523
100.3.101.36 0:0:0:0:0:ffff:6403:6524
100.3.101.37 0:0:0:0:0:ffff:6403:6525
100.3.101.38 0:0:0:0:0:ffff:6403:6526
100.3.101.39 0:0:0:0:0:ffff:6403:6527
100.3.101.40 0:0:0:0:0:ffff:6403:6528
100.3.101.41 0:0:0:0:0:ffff:6403:6529
100.3.101.42 0:0:0:0:0:ffff:6403:652a
100.3.101.43 0:0:0:0:0:ffff:6403:652b
100.3.101.44 0:0:0:0:0:ffff:6403:652c
100.3.101.45 0:0:0:0:0:ffff:6403:652d
100.3.101.46 0:0:0:0:0:ffff:6403:652e
100.3.101.47 0:0:0:0:0:ffff:6403:652f
100.3.101.48 0:0:0:0:0:ffff:6403:6530
100.3.101.49 0:0:0:0:0:ffff:6403:6531
100.3.101.50 0:0:0:0:0:ffff:6403:6532
100.3.101.51 0:0:0:0:0:ffff:6403:6533
100.3.101.52 0:0:0:0:0:ffff:6403:6534
100.3.101.53 0:0:0:0:0:ffff:6403:6535
100.3.101.54 0:0:0:0:0:ffff:6403:6536
100.3.101.55 0:0:0:0:0:ffff:6403:6537
100.3.101.56 0:0:0:0:0:ffff:6403:6538
100.3.101.57 0:0:0:0:0:ffff:6403:6539
100.3.101.58 0:0:0:0:0:ffff:6403:653a
100.3.101.59 0:0:0:0:0:ffff:6403:653b
100.3.101.60 0:0:0:0:0:ffff:6403:653c


100.3.101.61 0:0:0:0:0:ffff:6403:653d
100.3.101.62 0:0:0:0:0:ffff:6403:653e
100.3.101.63 0:0:0:0:0:ffff:6403:653f
100.3.101.64 0:0:0:0:0:ffff:6403:6540
100.3.101.65 0:0:0:0:0:ffff:6403:6541
100.3.101.66 0:0:0:0:0:ffff:6403:6542
100.3.101.67 0:0:0:0:0:ffff:6403:6543
100.3.101.68 0:0:0:0:0:ffff:6403:6544
100.3.101.69 0:0:0:0:0:ffff:6403:6545
100.3.101.70 0:0:0:0:0:ffff:6403:6546
100.3.101.71 0:0:0:0:0:ffff:6403:6547
100.3.101.72 0:0:0:0:0:ffff:6403:6548
100.3.101.73 0:0:0:0:0:ffff:6403:6549
100.3.101.74 0:0:0:0:0:ffff:6403:654a
100.3.101.75 0:0:0:0:0:ffff:6403:654b
100.3.101.76 0:0:0:0:0:ffff:6403:654c
100.3.101.77 0:0:0:0:0:ffff:6403:654d
100.3.101.78 0:0:0:0:0:ffff:6403:654e
100.3.101.79 0:0:0:0:0:ffff:6403:654f
100.3.101.80 0:0:0:0:0:ffff:6403:6550
100.3.101.81 0:0:0:0:0:ffff:6403:6551
100.3.101.82 0:0:0:0:0:ffff:6403:6552
100.3.101.83 0:0:0:0:0:ffff:6403:6553
100.3.101.84 0:0:0:0:0:ffff:6403:6554
100.3.101.85 0:0:0:0:0:ffff:6403:6555
100.3.101.86 0:0:0:0:0:ffff:6403:6556
100.3.101.87 0:0:0:0:0:ffff:6403:6557
100.3.101.88 0:0:0:0:0:ffff:6403:6558
100.3.101.89 0:0:0:0:0:ffff:6403:6559
100.3.101.90 0:0:0:0:0:ffff:6403:655a
100.3.101.91 0:0:0:0:0:ffff:6403:655b
100.3.101.92 0:0:0:0:0:ffff:6403:655c
100.3.101.93 0:0:0:0:0:ffff:6403:655d
100.3.101.94 0:0:0:0:0:ffff:6403:655e
100.3.101.95 0:0:0:0:0:ffff:6403:655f
100.3.101.96 0:0:0:0:0:ffff:6403:6560
100.3.101.97 0:0:0:0:0:ffff:6403:6561
100.3.101.98 0:0:0:0:0:ffff:6403:6562
100.3.101.99 0:0:0:0:0:ffff:6403:6563
100.3.101.100 0:0:0:0:0:ffff:6403:6564
100.3.101.101 0:0:0:0:0:ffff:6403:6565
100.3.101.102 0:0:0:0:0:ffff:6403:6566
100.3.101.103 0:0:0:0:0:ffff:6403:6567
100.3.101.104 0:0:0:0:0:ffff:6403:6568
100.3.101.105 0:0:0:0:0:ffff:6403:6569
100.3.101.106 0:0:0:0:0:ffff:6403:656a
100.3.101.107 0:0:0:0:0:ffff:6403:656b
100.3.101.108 0:0:0:0:0:ffff:6403:656c
100.3.101.109 0:0:0:0:0:ffff:6403:656d
100.3.101.110 0:0:0:0:0:ffff:6403:656e
100.3.101.111 0:0:0:0:0:ffff:6403:656f
100.3.101.112 0:0:0:0:0:ffff:6403:6570
100.3.101.113 0:0:0:0:0:ffff:6403:6571
100.3.101.114 0:0:0:0:0:ffff:6403:6572
100.3.101.115 0:0:0:0:0:ffff:6403:6573
100.3.101.116 0:0:0:0:0:ffff:6403:6574
100.3.101.117 0:0:0:0:0:ffff:6403:6575
100.3.101.118 0:0:0:0:0:ffff:6403:6576
100.3.101.119 0:0:0:0:0:ffff:6403:6577
100.3.101.120 0:0:0:0:0:ffff:6403:6578


100.3.101.121 0:0:0:0:0:ffff:6403:6579
100.3.101.122 0:0:0:0:0:ffff:6403:657a
100.3.101.123 0:0:0:0:0:ffff:6403:657b
100.3.101.124 0:0:0:0:0:ffff:6403:657c
100.3.101.125 0:0:0:0:0:ffff:6403:657d
100.3.101.126 0:0:0:0:0:ffff:6403:657e
100.3.101.127 0:0:0:0:0:ffff:6403:657f
100.3.101.128 0:0:0:0:0:ffff:6403:6580
100.3.101.129 0:0:0:0:0:ffff:6403:6581
100.3.101.130 0:0:0:0:0:ffff:6403:6582
100.3.101.131 0:0:0:0:0:ffff:6403:6583
100.3.101.132 0:0:0:0:0:ffff:6403:6584
100.3.101.133 0:0:0:0:0:ffff:6403:6585
100.3.101.134 0:0:0:0:0:ffff:6403:6586
100.3.101.135 0:0:0:0:0:ffff:6403:6587
100.3.101.136 0:0:0:0:0:ffff:6403:6588
100.3.101.137 0:0:0:0:0:ffff:6403:6589
100.3.101.138 0:0:0:0:0:ffff:6403:658a
100.3.101.139 0:0:0:0:0:ffff:6403:658b
100.3.101.140 0:0:0:0:0:ffff:6403:658c
100.3.101.141 0:0:0:0:0:ffff:6403:658d
100.3.101.142 0:0:0:0:0:ffff:6403:658e
100.3.101.143 0:0:0:0:0:ffff:6403:658f
100.3.101.144 0:0:0:0:0:ffff:6403:6590
100.3.101.145 0:0:0:0:0:ffff:6403:6591
100.3.101.146 0:0:0:0:0:ffff:6403:6592
100.3.101.147 0:0:0:0:0:ffff:6403:6593
100.3.101.148 0:0:0:0:0:ffff:6403:6594
100.3.101.149 0:0:0:0:0:ffff:6403:6595
100.3.101.150 0:0:0:0:0:ffff:6403:6596
100.3.101.151 0:0:0:0:0:ffff:6403:6597
100.3.101.152 0:0:0:0:0:ffff:6403:6598
100.3.101.153 0:0:0:0:0:ffff:6403:6599
100.3.101.154 0:0:0:0:0:ffff:6403:659a
100.3.101.155 0:0:0:0:0:ffff:6403:659b
100.3.101.156 0:0:0:0:0:ffff:6403:659c
100.3.101.157 0:0:0:0:0:ffff:6403:659d
100.3.101.158 0:0:0:0:0:ffff:6403:659e
100.3.101.159 0:0:0:0:0:ffff:6403:659f
100.3.101.160 0:0:0:0:0:ffff:6403:65a0
100.3.101.161 0:0:0:0:0:ffff:6403:65a1
100.3.101.162 0:0:0:0:0:ffff:6403:65a2
100.3.101.163 0:0:0:0:0:ffff:6403:65a3
100.3.101.164 0:0:0:0:0:ffff:6403:65a4
100.3.101.165 0:0:0:0:0:ffff:6403:65a5
100.3.101.166 0:0:0:0:0:ffff:6403:65a6
100.3.101.167 0:0:0:0:0:ffff:6403:65a7
100.3.101.168 0:0:0:0:0:ffff:6403:65a8
100.3.101.169 0:0:0:0:0:ffff:6403:65a9
100.3.101.170 0:0:0:0:0:ffff:6403:65aa
100.3.101.171 0:0:0:0:0:ffff:6403:65ab
100.3.101.172 0:0:0:0:0:ffff:6403:65ac
100.3.101.173 0:0:0:0:0:ffff:6403:65ad
100.3.101.174 0:0:0:0:0:ffff:6403:65ae
100.3.101.175 0:0:0:0:0:ffff:6403:65af
100.3.101.176 0:0:0:0:0:ffff:6403:65b0
100.3.101.177 0:0:0:0:0:ffff:6403:65b1
100.3.101.178 0:0:0:0:0:ffff:6403:65b2
100.3.101.179 0:0:0:0:0:ffff:6403:65b3
100.3.101.180 0:0:0:0:0:ffff:6403:65b4


100.3.101.181 0:0:0:0:0:ffff:6403:65b5
100.3.101.182 0:0:0:0:0:ffff:6403:65b6
100.3.101.183 0:0:0:0:0:ffff:6403:65b7
100.3.101.184 0:0:0:0:0:ffff:6403:65b8
100.3.101.185 0:0:0:0:0:ffff:6403:65b9
100.3.101.186 0:0:0:0:0:ffff:6403:65ba
100.3.101.187 0:0:0:0:0:ffff:6403:65bb
100.3.101.188 0:0:0:0:0:ffff:6403:65bc
100.3.101.189 0:0:0:0:0:ffff:6403:65bd
100.3.101.190 0:0:0:0:0:ffff:6403:65be
100.3.101.191 0:0:0:0:0:ffff:6403:65bf
100.3.101.192 0:0:0:0:0:ffff:6403:65c0
100.3.101.193 0:0:0:0:0:ffff:6403:65c1
100.3.101.194 0:0:0:0:0:ffff:6403:65c2
100.3.101.195 0:0:0:0:0:ffff:6403:65c3
100.3.101.196 0:0:0:0:0:ffff:6403:65c4
100.3.101.197 0:0:0:0:0:ffff:6403:65c5
100.3.101.198 0:0:0:0:0:ffff:6403:65c6
100.3.101.199 0:0:0:0:0:ffff:6403:65c7
100.3.101.200 0:0:0:0:0:ffff:6403:65c8
100.3.101.201 0:0:0:0:0:ffff:6403:65c9
100.3.101.202 0:0:0:0:0:ffff:6403:65ca
100.3.101.203 0:0:0:0:0:ffff:6403:65cb
100.3.101.204 0:0:0:0:0:ffff:6403:65cc
100.3.101.205 0:0:0:0:0:ffff:6403:65cd
100.3.101.206 0:0:0:0:0:ffff:6403:65ce
100.3.101.207 0:0:0:0:0:ffff:6403:65cf
100.3.101.208 0:0:0:0:0:ffff:6403:65d0
100.3.101.209 0:0:0:0:0:ffff:6403:65d1
100.3.101.210 0:0:0:0:0:ffff:6403:65d2
100.3.101.211 0:0:0:0:0:ffff:6403:65d3
100.3.101.212 0:0:0:0:0:ffff:6403:65d4
100.3.101.213 0:0:0:0:0:ffff:6403:65d5
100.3.101.214 0:0:0:0:0:ffff:6403:65d6
100.3.101.215 0:0:0:0:0:ffff:6403:65d7
100.3.101.216 0:0:0:0:0:ffff:6403:65d8
100.3.101.217 0:0:0:0:0:ffff:6403:65d9
100.3.101.218 0:0:0:0:0:ffff:6403:65da
100.3.101.219 0:0:0:0:0:ffff:6403:65db
100.3.101.220 0:0:0:0:0:ffff:6403:65dc
100.3.101.221 0:0:0:0:0:ffff:6403:65dd
100.3.101.222 0:0:0:0:0:ffff:6403:65de
100.3.101.223 0:0:0:0:0:ffff:6403:65df
100.3.101.224 0:0:0:0:0:ffff:6403:65e0
100.3.101.225 0:0:0:0:0:ffff:6403:65e1
100.3.101.226 0:0:0:0:0:ffff:6403:65e2
100.3.101.227 0:0:0:0:0:ffff:6403:65e3
100.3.101.228 0:0:0:0:0:ffff:6403:65e4
100.3.101.229 0:0:0:0:0:ffff:6403:65e5
100.3.101.230 0:0:0:0:0:ffff:6403:65e6
100.3.101.231 0:0:0:0:0:ffff:6403:65e7
100.3.101.232 0:0:0:0:0:ffff:6403:65e8
100.3.101.233 0:0:0:0:0:ffff:6403:65e9
100.3.101.234 0:0:0:0:0:ffff:6403:65ea
100.3.101.235 0:0:0:0:0:ffff:6403:65eb
100.3.101.236 0:0:0:0:0:ffff:6403:65ec
100.3.101.237 0:0:0:0:0:ffff:6403:65ed
100.3.101.238 0:0:0:0:0:ffff:6403:65ee
100.3.101.239 0:0:0:0:0:ffff:6403:65ef
100.3.101.240 0:0:0:0:0:ffff:6403:65f0
100.3.101.241 0:0:0:0:0:ffff:6403:65f1
100.3.101.242 0:0:0:0:0:ffff:6403:65f2
100.3.101.243 0:0:0:0:0:ffff:6403:65f3
100.3.101.244 0:0:0:0:0:ffff:6403:65f4
100.3.101.245 0:0:0:0:0:ffff:6403:65f5
100.3.101.246 0:0:0:0:0:ffff:6403:65f6
100.3.101.247 0:0:0:0:0:ffff:6403:65f7
100.3.101.248 0:0:0:0:0:ffff:6403:65f8
100.3.101.249 0:0:0:0:0:ffff:6403:65f9
100.3.101.250 0:0:0:0:0:ffff:6403:65fa
100.3.101.251 0:0:0:0:0:ffff:6403:65fb
100.3.101.252 0:0:0:0:0:ffff:6403:65fc
100.3.101.253 0:0:0:0:0:ffff:6403:65fd
100.3.101.254 0:0:0:0:0:ffff:6403:65fe
100.3.101.255 0:0:0:0:0:ffff:6403:65ff


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.