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
100.3.255.1 0:0:0:0:0:ffff:6403:ff01
100.3.255.2 0:0:0:0:0:ffff:6403:ff02
100.3.255.3 0:0:0:0:0:ffff:6403:ff03
100.3.255.4 0:0:0:0:0:ffff:6403:ff04
100.3.255.5 0:0:0:0:0:ffff:6403:ff05
100.3.255.6 0:0:0:0:0:ffff:6403:ff06
100.3.255.7 0:0:0:0:0:ffff:6403:ff07
100.3.255.8 0:0:0:0:0:ffff:6403:ff08
100.3.255.9 0:0:0:0:0:ffff:6403:ff09
100.3.255.10 0:0:0:0:0:ffff:6403:ff0a
100.3.255.11 0:0:0:0:0:ffff:6403:ff0b
100.3.255.12 0:0:0:0:0:ffff:6403:ff0c
100.3.255.13 0:0:0:0:0:ffff:6403:ff0d
100.3.255.14 0:0:0:0:0:ffff:6403:ff0e
100.3.255.15 0:0:0:0:0:ffff:6403:ff0f
100.3.255.16 0:0:0:0:0:ffff:6403:ff10
100.3.255.17 0:0:0:0:0:ffff:6403:ff11
100.3.255.18 0:0:0:0:0:ffff:6403:ff12
100.3.255.19 0:0:0:0:0:ffff:6403:ff13
100.3.255.20 0:0:0:0:0:ffff:6403:ff14
100.3.255.21 0:0:0:0:0:ffff:6403:ff15
100.3.255.22 0:0:0:0:0:ffff:6403:ff16
100.3.255.23 0:0:0:0:0:ffff:6403:ff17
100.3.255.24 0:0:0:0:0:ffff:6403:ff18
100.3.255.25 0:0:0:0:0:ffff:6403:ff19
100.3.255.26 0:0:0:0:0:ffff:6403:ff1a
100.3.255.27 0:0:0:0:0:ffff:6403:ff1b
100.3.255.28 0:0:0:0:0:ffff:6403:ff1c
100.3.255.29 0:0:0:0:0:ffff:6403:ff1d
100.3.255.30 0:0:0:0:0:ffff:6403:ff1e
100.3.255.31 0:0:0:0:0:ffff:6403:ff1f
100.3.255.32 0:0:0:0:0:ffff:6403:ff20
100.3.255.33 0:0:0:0:0:ffff:6403:ff21
100.3.255.34 0:0:0:0:0:ffff:6403:ff22
100.3.255.35 0:0:0:0:0:ffff:6403:ff23
100.3.255.36 0:0:0:0:0:ffff:6403:ff24
100.3.255.37 0:0:0:0:0:ffff:6403:ff25
100.3.255.38 0:0:0:0:0:ffff:6403:ff26
100.3.255.39 0:0:0:0:0:ffff:6403:ff27
100.3.255.40 0:0:0:0:0:ffff:6403:ff28
100.3.255.41 0:0:0:0:0:ffff:6403:ff29
100.3.255.42 0:0:0:0:0:ffff:6403:ff2a
100.3.255.43 0:0:0:0:0:ffff:6403:ff2b
100.3.255.44 0:0:0:0:0:ffff:6403:ff2c
100.3.255.45 0:0:0:0:0:ffff:6403:ff2d
100.3.255.46 0:0:0:0:0:ffff:6403:ff2e
100.3.255.47 0:0:0:0:0:ffff:6403:ff2f
100.3.255.48 0:0:0:0:0:ffff:6403:ff30
100.3.255.49 0:0:0:0:0:ffff:6403:ff31
100.3.255.50 0:0:0:0:0:ffff:6403:ff32
100.3.255.51 0:0:0:0:0:ffff:6403:ff33
100.3.255.52 0:0:0:0:0:ffff:6403:ff34
100.3.255.53 0:0:0:0:0:ffff:6403:ff35
100.3.255.54 0:0:0:0:0:ffff:6403:ff36
100.3.255.55 0:0:0:0:0:ffff:6403:ff37
100.3.255.56 0:0:0:0:0:ffff:6403:ff38
100.3.255.57 0:0:0:0:0:ffff:6403:ff39
100.3.255.58 0:0:0:0:0:ffff:6403:ff3a
100.3.255.59 0:0:0:0:0:ffff:6403:ff3b
100.3.255.60 0:0:0:0:0:ffff:6403:ff3c


100.3.255.61 0:0:0:0:0:ffff:6403:ff3d
100.3.255.62 0:0:0:0:0:ffff:6403:ff3e
100.3.255.63 0:0:0:0:0:ffff:6403:ff3f
100.3.255.64 0:0:0:0:0:ffff:6403:ff40
100.3.255.65 0:0:0:0:0:ffff:6403:ff41
100.3.255.66 0:0:0:0:0:ffff:6403:ff42
100.3.255.67 0:0:0:0:0:ffff:6403:ff43
100.3.255.68 0:0:0:0:0:ffff:6403:ff44
100.3.255.69 0:0:0:0:0:ffff:6403:ff45
100.3.255.70 0:0:0:0:0:ffff:6403:ff46
100.3.255.71 0:0:0:0:0:ffff:6403:ff47
100.3.255.72 0:0:0:0:0:ffff:6403:ff48
100.3.255.73 0:0:0:0:0:ffff:6403:ff49
100.3.255.74 0:0:0:0:0:ffff:6403:ff4a
100.3.255.75 0:0:0:0:0:ffff:6403:ff4b
100.3.255.76 0:0:0:0:0:ffff:6403:ff4c
100.3.255.77 0:0:0:0:0:ffff:6403:ff4d
100.3.255.78 0:0:0:0:0:ffff:6403:ff4e
100.3.255.79 0:0:0:0:0:ffff:6403:ff4f
100.3.255.80 0:0:0:0:0:ffff:6403:ff50
100.3.255.81 0:0:0:0:0:ffff:6403:ff51
100.3.255.82 0:0:0:0:0:ffff:6403:ff52
100.3.255.83 0:0:0:0:0:ffff:6403:ff53
100.3.255.84 0:0:0:0:0:ffff:6403:ff54
100.3.255.85 0:0:0:0:0:ffff:6403:ff55
100.3.255.86 0:0:0:0:0:ffff:6403:ff56
100.3.255.87 0:0:0:0:0:ffff:6403:ff57
100.3.255.88 0:0:0:0:0:ffff:6403:ff58
100.3.255.89 0:0:0:0:0:ffff:6403:ff59
100.3.255.90 0:0:0:0:0:ffff:6403:ff5a
100.3.255.91 0:0:0:0:0:ffff:6403:ff5b
100.3.255.92 0:0:0:0:0:ffff:6403:ff5c
100.3.255.93 0:0:0:0:0:ffff:6403:ff5d
100.3.255.94 0:0:0:0:0:ffff:6403:ff5e
100.3.255.95 0:0:0:0:0:ffff:6403:ff5f
100.3.255.96 0:0:0:0:0:ffff:6403:ff60
100.3.255.97 0:0:0:0:0:ffff:6403:ff61
100.3.255.98 0:0:0:0:0:ffff:6403:ff62
100.3.255.99 0:0:0:0:0:ffff:6403:ff63
100.3.255.100 0:0:0:0:0:ffff:6403:ff64
100.3.255.101 0:0:0:0:0:ffff:6403:ff65
100.3.255.102 0:0:0:0:0:ffff:6403:ff66
100.3.255.103 0:0:0:0:0:ffff:6403:ff67
100.3.255.104 0:0:0:0:0:ffff:6403:ff68
100.3.255.105 0:0:0:0:0:ffff:6403:ff69
100.3.255.106 0:0:0:0:0:ffff:6403:ff6a
100.3.255.107 0:0:0:0:0:ffff:6403:ff6b
100.3.255.108 0:0:0:0:0:ffff:6403:ff6c
100.3.255.109 0:0:0:0:0:ffff:6403:ff6d
100.3.255.110 0:0:0:0:0:ffff:6403:ff6e
100.3.255.111 0:0:0:0:0:ffff:6403:ff6f
100.3.255.112 0:0:0:0:0:ffff:6403:ff70
100.3.255.113 0:0:0:0:0:ffff:6403:ff71
100.3.255.114 0:0:0:0:0:ffff:6403:ff72
100.3.255.115 0:0:0:0:0:ffff:6403:ff73
100.3.255.116 0:0:0:0:0:ffff:6403:ff74
100.3.255.117 0:0:0:0:0:ffff:6403:ff75
100.3.255.118 0:0:0:0:0:ffff:6403:ff76
100.3.255.119 0:0:0:0:0:ffff:6403:ff77
100.3.255.120 0:0:0:0:0:ffff:6403:ff78


100.3.255.121 0:0:0:0:0:ffff:6403:ff79
100.3.255.122 0:0:0:0:0:ffff:6403:ff7a
100.3.255.123 0:0:0:0:0:ffff:6403:ff7b
100.3.255.124 0:0:0:0:0:ffff:6403:ff7c
100.3.255.125 0:0:0:0:0:ffff:6403:ff7d
100.3.255.126 0:0:0:0:0:ffff:6403:ff7e
100.3.255.127 0:0:0:0:0:ffff:6403:ff7f
100.3.255.128 0:0:0:0:0:ffff:6403:ff80
100.3.255.129 0:0:0:0:0:ffff:6403:ff81
100.3.255.130 0:0:0:0:0:ffff:6403:ff82
100.3.255.131 0:0:0:0:0:ffff:6403:ff83
100.3.255.132 0:0:0:0:0:ffff:6403:ff84
100.3.255.133 0:0:0:0:0:ffff:6403:ff85
100.3.255.134 0:0:0:0:0:ffff:6403:ff86
100.3.255.135 0:0:0:0:0:ffff:6403:ff87
100.3.255.136 0:0:0:0:0:ffff:6403:ff88
100.3.255.137 0:0:0:0:0:ffff:6403:ff89
100.3.255.138 0:0:0:0:0:ffff:6403:ff8a
100.3.255.139 0:0:0:0:0:ffff:6403:ff8b
100.3.255.140 0:0:0:0:0:ffff:6403:ff8c
100.3.255.141 0:0:0:0:0:ffff:6403:ff8d
100.3.255.142 0:0:0:0:0:ffff:6403:ff8e
100.3.255.143 0:0:0:0:0:ffff:6403:ff8f
100.3.255.144 0:0:0:0:0:ffff:6403:ff90
100.3.255.145 0:0:0:0:0:ffff:6403:ff91
100.3.255.146 0:0:0:0:0:ffff:6403:ff92
100.3.255.147 0:0:0:0:0:ffff:6403:ff93
100.3.255.148 0:0:0:0:0:ffff:6403:ff94
100.3.255.149 0:0:0:0:0:ffff:6403:ff95
100.3.255.150 0:0:0:0:0:ffff:6403:ff96
100.3.255.151 0:0:0:0:0:ffff:6403:ff97
100.3.255.152 0:0:0:0:0:ffff:6403:ff98
100.3.255.153 0:0:0:0:0:ffff:6403:ff99
100.3.255.154 0:0:0:0:0:ffff:6403:ff9a
100.3.255.155 0:0:0:0:0:ffff:6403:ff9b
100.3.255.156 0:0:0:0:0:ffff:6403:ff9c
100.3.255.157 0:0:0:0:0:ffff:6403:ff9d
100.3.255.158 0:0:0:0:0:ffff:6403:ff9e
100.3.255.159 0:0:0:0:0:ffff:6403:ff9f
100.3.255.160 0:0:0:0:0:ffff:6403:ffa0
100.3.255.161 0:0:0:0:0:ffff:6403:ffa1
100.3.255.162 0:0:0:0:0:ffff:6403:ffa2
100.3.255.163 0:0:0:0:0:ffff:6403:ffa3
100.3.255.164 0:0:0:0:0:ffff:6403:ffa4
100.3.255.165 0:0:0:0:0:ffff:6403:ffa5
100.3.255.166 0:0:0:0:0:ffff:6403:ffa6
100.3.255.167 0:0:0:0:0:ffff:6403:ffa7
100.3.255.168 0:0:0:0:0:ffff:6403:ffa8
100.3.255.169 0:0:0:0:0:ffff:6403:ffa9
100.3.255.170 0:0:0:0:0:ffff:6403:ffaa
100.3.255.171 0:0:0:0:0:ffff:6403:ffab
100.3.255.172 0:0:0:0:0:ffff:6403:ffac
100.3.255.173 0:0:0:0:0:ffff:6403:ffad
100.3.255.174 0:0:0:0:0:ffff:6403:ffae
100.3.255.175 0:0:0:0:0:ffff:6403:ffaf
100.3.255.176 0:0:0:0:0:ffff:6403:ffb0
100.3.255.177 0:0:0:0:0:ffff:6403:ffb1
100.3.255.178 0:0:0:0:0:ffff:6403:ffb2
100.3.255.179 0:0:0:0:0:ffff:6403:ffb3
100.3.255.180 0:0:0:0:0:ffff:6403:ffb4


100.3.255.181 0:0:0:0:0:ffff:6403:ffb5
100.3.255.182 0:0:0:0:0:ffff:6403:ffb6
100.3.255.183 0:0:0:0:0:ffff:6403:ffb7
100.3.255.184 0:0:0:0:0:ffff:6403:ffb8
100.3.255.185 0:0:0:0:0:ffff:6403:ffb9
100.3.255.186 0:0:0:0:0:ffff:6403:ffba
100.3.255.187 0:0:0:0:0:ffff:6403:ffbb
100.3.255.188 0:0:0:0:0:ffff:6403:ffbc
100.3.255.189 0:0:0:0:0:ffff:6403:ffbd
100.3.255.190 0:0:0:0:0:ffff:6403:ffbe
100.3.255.191 0:0:0:0:0:ffff:6403:ffbf
100.3.255.192 0:0:0:0:0:ffff:6403:ffc0
100.3.255.193 0:0:0:0:0:ffff:6403:ffc1
100.3.255.194 0:0:0:0:0:ffff:6403:ffc2
100.3.255.195 0:0:0:0:0:ffff:6403:ffc3
100.3.255.196 0:0:0:0:0:ffff:6403:ffc4
100.3.255.197 0:0:0:0:0:ffff:6403:ffc5
100.3.255.198 0:0:0:0:0:ffff:6403:ffc6
100.3.255.199 0:0:0:0:0:ffff:6403:ffc7
100.3.255.200 0:0:0:0:0:ffff:6403:ffc8
100.3.255.201 0:0:0:0:0:ffff:6403:ffc9
100.3.255.202 0:0:0:0:0:ffff:6403:ffca
100.3.255.203 0:0:0:0:0:ffff:6403:ffcb
100.3.255.204 0:0:0:0:0:ffff:6403:ffcc
100.3.255.205 0:0:0:0:0:ffff:6403:ffcd
100.3.255.206 0:0:0:0:0:ffff:6403:ffce
100.3.255.207 0:0:0:0:0:ffff:6403:ffcf
100.3.255.208 0:0:0:0:0:ffff:6403:ffd0
100.3.255.209 0:0:0:0:0:ffff:6403:ffd1
100.3.255.210 0:0:0:0:0:ffff:6403:ffd2
100.3.255.211 0:0:0:0:0:ffff:6403:ffd3
100.3.255.212 0:0:0:0:0:ffff:6403:ffd4
100.3.255.213 0:0:0:0:0:ffff:6403:ffd5
100.3.255.214 0:0:0:0:0:ffff:6403:ffd6
100.3.255.215 0:0:0:0:0:ffff:6403:ffd7
100.3.255.216 0:0:0:0:0:ffff:6403:ffd8
100.3.255.217 0:0:0:0:0:ffff:6403:ffd9
100.3.255.218 0:0:0:0:0:ffff:6403:ffda
100.3.255.219 0:0:0:0:0:ffff:6403:ffdb
100.3.255.220 0:0:0:0:0:ffff:6403:ffdc
100.3.255.221 0:0:0:0:0:ffff:6403:ffdd
100.3.255.222 0:0:0:0:0:ffff:6403:ffde
100.3.255.223 0:0:0:0:0:ffff:6403:ffdf
100.3.255.224 0:0:0:0:0:ffff:6403:ffe0
100.3.255.225 0:0:0:0:0:ffff:6403:ffe1
100.3.255.226 0:0:0:0:0:ffff:6403:ffe2
100.3.255.227 0:0:0:0:0:ffff:6403:ffe3
100.3.255.228 0:0:0:0:0:ffff:6403:ffe4
100.3.255.229 0:0:0:0:0:ffff:6403:ffe5
100.3.255.230 0:0:0:0:0:ffff:6403:ffe6
100.3.255.231 0:0:0:0:0:ffff:6403:ffe7
100.3.255.232 0:0:0:0:0:ffff:6403:ffe8
100.3.255.233 0:0:0:0:0:ffff:6403:ffe9
100.3.255.234 0:0:0:0:0:ffff:6403:ffea
100.3.255.235 0:0:0:0:0:ffff:6403:ffeb
100.3.255.236 0:0:0:0:0:ffff:6403:ffec
100.3.255.237 0:0:0:0:0:ffff:6403:ffed
100.3.255.238 0:0:0:0:0:ffff:6403:ffee
100.3.255.239 0:0:0:0:0:ffff:6403:ffef
100.3.255.240 0:0:0:0:0:ffff:6403:fff0
100.3.255.241 0:0:0:0:0:ffff:6403:fff1
100.3.255.242 0:0:0:0:0:ffff:6403:fff2
100.3.255.243 0:0:0:0:0:ffff:6403:fff3
100.3.255.244 0:0:0:0:0:ffff:6403:fff4
100.3.255.245 0:0:0:0:0:ffff:6403:fff5
100.3.255.246 0:0:0:0:0:ffff:6403:fff6
100.3.255.247 0:0:0:0:0:ffff:6403:fff7
100.3.255.248 0:0:0:0:0:ffff:6403:fff8
100.3.255.249 0:0:0:0:0:ffff:6403:fff9
100.3.255.250 0:0:0:0:0:ffff:6403:fffa
100.3.255.251 0:0:0:0:0:ffff:6403:fffb
100.3.255.252 0:0:0:0:0:ffff:6403:fffc
100.3.255.253 0:0:0:0:0:ffff:6403:fffd
100.3.255.254 0:0:0:0:0:ffff:6403:fffe
100.3.255.255 0:0:0:0:0:ffff:6403:ffff


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.