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
31.137.42.1 0:0:0:0:0:ffff:1f89:2a01
31.137.42.2 0:0:0:0:0:ffff:1f89:2a02
31.137.42.3 0:0:0:0:0:ffff:1f89:2a03
31.137.42.4 0:0:0:0:0:ffff:1f89:2a04
31.137.42.5 0:0:0:0:0:ffff:1f89:2a05
31.137.42.6 0:0:0:0:0:ffff:1f89:2a06
31.137.42.7 0:0:0:0:0:ffff:1f89:2a07
31.137.42.8 0:0:0:0:0:ffff:1f89:2a08
31.137.42.9 0:0:0:0:0:ffff:1f89:2a09
31.137.42.10 0:0:0:0:0:ffff:1f89:2a0a
31.137.42.11 0:0:0:0:0:ffff:1f89:2a0b
31.137.42.12 0:0:0:0:0:ffff:1f89:2a0c
31.137.42.13 0:0:0:0:0:ffff:1f89:2a0d
31.137.42.14 0:0:0:0:0:ffff:1f89:2a0e
31.137.42.15 0:0:0:0:0:ffff:1f89:2a0f
31.137.42.16 0:0:0:0:0:ffff:1f89:2a10
31.137.42.17 0:0:0:0:0:ffff:1f89:2a11
31.137.42.18 0:0:0:0:0:ffff:1f89:2a12
31.137.42.19 0:0:0:0:0:ffff:1f89:2a13
31.137.42.20 0:0:0:0:0:ffff:1f89:2a14
31.137.42.21 0:0:0:0:0:ffff:1f89:2a15
31.137.42.22 0:0:0:0:0:ffff:1f89:2a16
31.137.42.23 0:0:0:0:0:ffff:1f89:2a17
31.137.42.24 0:0:0:0:0:ffff:1f89:2a18
31.137.42.25 0:0:0:0:0:ffff:1f89:2a19
31.137.42.26 0:0:0:0:0:ffff:1f89:2a1a
31.137.42.27 0:0:0:0:0:ffff:1f89:2a1b
31.137.42.28 0:0:0:0:0:ffff:1f89:2a1c
31.137.42.29 0:0:0:0:0:ffff:1f89:2a1d
31.137.42.30 0:0:0:0:0:ffff:1f89:2a1e
31.137.42.31 0:0:0:0:0:ffff:1f89:2a1f
31.137.42.32 0:0:0:0:0:ffff:1f89:2a20
31.137.42.33 0:0:0:0:0:ffff:1f89:2a21
31.137.42.34 0:0:0:0:0:ffff:1f89:2a22
31.137.42.35 0:0:0:0:0:ffff:1f89:2a23
31.137.42.36 0:0:0:0:0:ffff:1f89:2a24
31.137.42.37 0:0:0:0:0:ffff:1f89:2a25
31.137.42.38 0:0:0:0:0:ffff:1f89:2a26
31.137.42.39 0:0:0:0:0:ffff:1f89:2a27
31.137.42.40 0:0:0:0:0:ffff:1f89:2a28
31.137.42.41 0:0:0:0:0:ffff:1f89:2a29
31.137.42.42 0:0:0:0:0:ffff:1f89:2a2a
31.137.42.43 0:0:0:0:0:ffff:1f89:2a2b
31.137.42.44 0:0:0:0:0:ffff:1f89:2a2c
31.137.42.45 0:0:0:0:0:ffff:1f89:2a2d
31.137.42.46 0:0:0:0:0:ffff:1f89:2a2e
31.137.42.47 0:0:0:0:0:ffff:1f89:2a2f
31.137.42.48 0:0:0:0:0:ffff:1f89:2a30
31.137.42.49 0:0:0:0:0:ffff:1f89:2a31
31.137.42.50 0:0:0:0:0:ffff:1f89:2a32
31.137.42.51 0:0:0:0:0:ffff:1f89:2a33
31.137.42.52 0:0:0:0:0:ffff:1f89:2a34
31.137.42.53 0:0:0:0:0:ffff:1f89:2a35
31.137.42.54 0:0:0:0:0:ffff:1f89:2a36
31.137.42.55 0:0:0:0:0:ffff:1f89:2a37
31.137.42.56 0:0:0:0:0:ffff:1f89:2a38
31.137.42.57 0:0:0:0:0:ffff:1f89:2a39
31.137.42.58 0:0:0:0:0:ffff:1f89:2a3a
31.137.42.59 0:0:0:0:0:ffff:1f89:2a3b
31.137.42.60 0:0:0:0:0:ffff:1f89:2a3c


31.137.42.61 0:0:0:0:0:ffff:1f89:2a3d
31.137.42.62 0:0:0:0:0:ffff:1f89:2a3e
31.137.42.63 0:0:0:0:0:ffff:1f89:2a3f
31.137.42.64 0:0:0:0:0:ffff:1f89:2a40
31.137.42.65 0:0:0:0:0:ffff:1f89:2a41
31.137.42.66 0:0:0:0:0:ffff:1f89:2a42
31.137.42.67 0:0:0:0:0:ffff:1f89:2a43
31.137.42.68 0:0:0:0:0:ffff:1f89:2a44
31.137.42.69 0:0:0:0:0:ffff:1f89:2a45
31.137.42.70 0:0:0:0:0:ffff:1f89:2a46
31.137.42.71 0:0:0:0:0:ffff:1f89:2a47
31.137.42.72 0:0:0:0:0:ffff:1f89:2a48
31.137.42.73 0:0:0:0:0:ffff:1f89:2a49
31.137.42.74 0:0:0:0:0:ffff:1f89:2a4a
31.137.42.75 0:0:0:0:0:ffff:1f89:2a4b
31.137.42.76 0:0:0:0:0:ffff:1f89:2a4c
31.137.42.77 0:0:0:0:0:ffff:1f89:2a4d
31.137.42.78 0:0:0:0:0:ffff:1f89:2a4e
31.137.42.79 0:0:0:0:0:ffff:1f89:2a4f
31.137.42.80 0:0:0:0:0:ffff:1f89:2a50
31.137.42.81 0:0:0:0:0:ffff:1f89:2a51
31.137.42.82 0:0:0:0:0:ffff:1f89:2a52
31.137.42.83 0:0:0:0:0:ffff:1f89:2a53
31.137.42.84 0:0:0:0:0:ffff:1f89:2a54
31.137.42.85 0:0:0:0:0:ffff:1f89:2a55
31.137.42.86 0:0:0:0:0:ffff:1f89:2a56
31.137.42.87 0:0:0:0:0:ffff:1f89:2a57
31.137.42.88 0:0:0:0:0:ffff:1f89:2a58
31.137.42.89 0:0:0:0:0:ffff:1f89:2a59
31.137.42.90 0:0:0:0:0:ffff:1f89:2a5a
31.137.42.91 0:0:0:0:0:ffff:1f89:2a5b
31.137.42.92 0:0:0:0:0:ffff:1f89:2a5c
31.137.42.93 0:0:0:0:0:ffff:1f89:2a5d
31.137.42.94 0:0:0:0:0:ffff:1f89:2a5e
31.137.42.95 0:0:0:0:0:ffff:1f89:2a5f
31.137.42.96 0:0:0:0:0:ffff:1f89:2a60
31.137.42.97 0:0:0:0:0:ffff:1f89:2a61
31.137.42.98 0:0:0:0:0:ffff:1f89:2a62
31.137.42.99 0:0:0:0:0:ffff:1f89:2a63
31.137.42.100 0:0:0:0:0:ffff:1f89:2a64
31.137.42.101 0:0:0:0:0:ffff:1f89:2a65
31.137.42.102 0:0:0:0:0:ffff:1f89:2a66
31.137.42.103 0:0:0:0:0:ffff:1f89:2a67
31.137.42.104 0:0:0:0:0:ffff:1f89:2a68
31.137.42.105 0:0:0:0:0:ffff:1f89:2a69
31.137.42.106 0:0:0:0:0:ffff:1f89:2a6a
31.137.42.107 0:0:0:0:0:ffff:1f89:2a6b
31.137.42.108 0:0:0:0:0:ffff:1f89:2a6c
31.137.42.109 0:0:0:0:0:ffff:1f89:2a6d
31.137.42.110 0:0:0:0:0:ffff:1f89:2a6e
31.137.42.111 0:0:0:0:0:ffff:1f89:2a6f
31.137.42.112 0:0:0:0:0:ffff:1f89:2a70
31.137.42.113 0:0:0:0:0:ffff:1f89:2a71
31.137.42.114 0:0:0:0:0:ffff:1f89:2a72
31.137.42.115 0:0:0:0:0:ffff:1f89:2a73
31.137.42.116 0:0:0:0:0:ffff:1f89:2a74
31.137.42.117 0:0:0:0:0:ffff:1f89:2a75
31.137.42.118 0:0:0:0:0:ffff:1f89:2a76
31.137.42.119 0:0:0:0:0:ffff:1f89:2a77
31.137.42.120 0:0:0:0:0:ffff:1f89:2a78


31.137.42.121 0:0:0:0:0:ffff:1f89:2a79
31.137.42.122 0:0:0:0:0:ffff:1f89:2a7a
31.137.42.123 0:0:0:0:0:ffff:1f89:2a7b
31.137.42.124 0:0:0:0:0:ffff:1f89:2a7c
31.137.42.125 0:0:0:0:0:ffff:1f89:2a7d
31.137.42.126 0:0:0:0:0:ffff:1f89:2a7e
31.137.42.127 0:0:0:0:0:ffff:1f89:2a7f
31.137.42.128 0:0:0:0:0:ffff:1f89:2a80
31.137.42.129 0:0:0:0:0:ffff:1f89:2a81
31.137.42.130 0:0:0:0:0:ffff:1f89:2a82
31.137.42.131 0:0:0:0:0:ffff:1f89:2a83
31.137.42.132 0:0:0:0:0:ffff:1f89:2a84
31.137.42.133 0:0:0:0:0:ffff:1f89:2a85
31.137.42.134 0:0:0:0:0:ffff:1f89:2a86
31.137.42.135 0:0:0:0:0:ffff:1f89:2a87
31.137.42.136 0:0:0:0:0:ffff:1f89:2a88
31.137.42.137 0:0:0:0:0:ffff:1f89:2a89
31.137.42.138 0:0:0:0:0:ffff:1f89:2a8a
31.137.42.139 0:0:0:0:0:ffff:1f89:2a8b
31.137.42.140 0:0:0:0:0:ffff:1f89:2a8c
31.137.42.141 0:0:0:0:0:ffff:1f89:2a8d
31.137.42.142 0:0:0:0:0:ffff:1f89:2a8e
31.137.42.143 0:0:0:0:0:ffff:1f89:2a8f
31.137.42.144 0:0:0:0:0:ffff:1f89:2a90
31.137.42.145 0:0:0:0:0:ffff:1f89:2a91
31.137.42.146 0:0:0:0:0:ffff:1f89:2a92
31.137.42.147 0:0:0:0:0:ffff:1f89:2a93
31.137.42.148 0:0:0:0:0:ffff:1f89:2a94
31.137.42.149 0:0:0:0:0:ffff:1f89:2a95
31.137.42.150 0:0:0:0:0:ffff:1f89:2a96
31.137.42.151 0:0:0:0:0:ffff:1f89:2a97
31.137.42.152 0:0:0:0:0:ffff:1f89:2a98
31.137.42.153 0:0:0:0:0:ffff:1f89:2a99
31.137.42.154 0:0:0:0:0:ffff:1f89:2a9a
31.137.42.155 0:0:0:0:0:ffff:1f89:2a9b
31.137.42.156 0:0:0:0:0:ffff:1f89:2a9c
31.137.42.157 0:0:0:0:0:ffff:1f89:2a9d
31.137.42.158 0:0:0:0:0:ffff:1f89:2a9e
31.137.42.159 0:0:0:0:0:ffff:1f89:2a9f
31.137.42.160 0:0:0:0:0:ffff:1f89:2aa0
31.137.42.161 0:0:0:0:0:ffff:1f89:2aa1
31.137.42.162 0:0:0:0:0:ffff:1f89:2aa2
31.137.42.163 0:0:0:0:0:ffff:1f89:2aa3
31.137.42.164 0:0:0:0:0:ffff:1f89:2aa4
31.137.42.165 0:0:0:0:0:ffff:1f89:2aa5
31.137.42.166 0:0:0:0:0:ffff:1f89:2aa6
31.137.42.167 0:0:0:0:0:ffff:1f89:2aa7
31.137.42.168 0:0:0:0:0:ffff:1f89:2aa8
31.137.42.169 0:0:0:0:0:ffff:1f89:2aa9
31.137.42.170 0:0:0:0:0:ffff:1f89:2aaa
31.137.42.171 0:0:0:0:0:ffff:1f89:2aab
31.137.42.172 0:0:0:0:0:ffff:1f89:2aac
31.137.42.173 0:0:0:0:0:ffff:1f89:2aad
31.137.42.174 0:0:0:0:0:ffff:1f89:2aae
31.137.42.175 0:0:0:0:0:ffff:1f89:2aaf
31.137.42.176 0:0:0:0:0:ffff:1f89:2ab0
31.137.42.177 0:0:0:0:0:ffff:1f89:2ab1
31.137.42.178 0:0:0:0:0:ffff:1f89:2ab2
31.137.42.179 0:0:0:0:0:ffff:1f89:2ab3
31.137.42.180 0:0:0:0:0:ffff:1f89:2ab4


31.137.42.181 0:0:0:0:0:ffff:1f89:2ab5
31.137.42.182 0:0:0:0:0:ffff:1f89:2ab6
31.137.42.183 0:0:0:0:0:ffff:1f89:2ab7
31.137.42.184 0:0:0:0:0:ffff:1f89:2ab8
31.137.42.185 0:0:0:0:0:ffff:1f89:2ab9
31.137.42.186 0:0:0:0:0:ffff:1f89:2aba
31.137.42.187 0:0:0:0:0:ffff:1f89:2abb
31.137.42.188 0:0:0:0:0:ffff:1f89:2abc
31.137.42.189 0:0:0:0:0:ffff:1f89:2abd
31.137.42.190 0:0:0:0:0:ffff:1f89:2abe
31.137.42.191 0:0:0:0:0:ffff:1f89:2abf
31.137.42.192 0:0:0:0:0:ffff:1f89:2ac0
31.137.42.193 0:0:0:0:0:ffff:1f89:2ac1
31.137.42.194 0:0:0:0:0:ffff:1f89:2ac2
31.137.42.195 0:0:0:0:0:ffff:1f89:2ac3
31.137.42.196 0:0:0:0:0:ffff:1f89:2ac4
31.137.42.197 0:0:0:0:0:ffff:1f89:2ac5
31.137.42.198 0:0:0:0:0:ffff:1f89:2ac6
31.137.42.199 0:0:0:0:0:ffff:1f89:2ac7
31.137.42.200 0:0:0:0:0:ffff:1f89:2ac8
31.137.42.201 0:0:0:0:0:ffff:1f89:2ac9
31.137.42.202 0:0:0:0:0:ffff:1f89:2aca
31.137.42.203 0:0:0:0:0:ffff:1f89:2acb
31.137.42.204 0:0:0:0:0:ffff:1f89:2acc
31.137.42.205 0:0:0:0:0:ffff:1f89:2acd
31.137.42.206 0:0:0:0:0:ffff:1f89:2ace
31.137.42.207 0:0:0:0:0:ffff:1f89:2acf
31.137.42.208 0:0:0:0:0:ffff:1f89:2ad0
31.137.42.209 0:0:0:0:0:ffff:1f89:2ad1
31.137.42.210 0:0:0:0:0:ffff:1f89:2ad2
31.137.42.211 0:0:0:0:0:ffff:1f89:2ad3
31.137.42.212 0:0:0:0:0:ffff:1f89:2ad4
31.137.42.213 0:0:0:0:0:ffff:1f89:2ad5
31.137.42.214 0:0:0:0:0:ffff:1f89:2ad6
31.137.42.215 0:0:0:0:0:ffff:1f89:2ad7
31.137.42.216 0:0:0:0:0:ffff:1f89:2ad8
31.137.42.217 0:0:0:0:0:ffff:1f89:2ad9
31.137.42.218 0:0:0:0:0:ffff:1f89:2ada
31.137.42.219 0:0:0:0:0:ffff:1f89:2adb
31.137.42.220 0:0:0:0:0:ffff:1f89:2adc
31.137.42.221 0:0:0:0:0:ffff:1f89:2add
31.137.42.222 0:0:0:0:0:ffff:1f89:2ade
31.137.42.223 0:0:0:0:0:ffff:1f89:2adf
31.137.42.224 0:0:0:0:0:ffff:1f89:2ae0
31.137.42.225 0:0:0:0:0:ffff:1f89:2ae1
31.137.42.226 0:0:0:0:0:ffff:1f89:2ae2
31.137.42.227 0:0:0:0:0:ffff:1f89:2ae3
31.137.42.228 0:0:0:0:0:ffff:1f89:2ae4
31.137.42.229 0:0:0:0:0:ffff:1f89:2ae5
31.137.42.230 0:0:0:0:0:ffff:1f89:2ae6
31.137.42.231 0:0:0:0:0:ffff:1f89:2ae7
31.137.42.232 0:0:0:0:0:ffff:1f89:2ae8
31.137.42.233 0:0:0:0:0:ffff:1f89:2ae9
31.137.42.234 0:0:0:0:0:ffff:1f89:2aea
31.137.42.235 0:0:0:0:0:ffff:1f89:2aeb
31.137.42.236 0:0:0:0:0:ffff:1f89:2aec
31.137.42.237 0:0:0:0:0:ffff:1f89:2aed
31.137.42.238 0:0:0:0:0:ffff:1f89:2aee
31.137.42.239 0:0:0:0:0:ffff:1f89:2aef
31.137.42.240 0:0:0:0:0:ffff:1f89:2af0
31.137.42.241 0:0:0:0:0:ffff:1f89:2af1
31.137.42.242 0:0:0:0:0:ffff:1f89:2af2
31.137.42.243 0:0:0:0:0:ffff:1f89:2af3
31.137.42.244 0:0:0:0:0:ffff:1f89:2af4
31.137.42.245 0:0:0:0:0:ffff:1f89:2af5
31.137.42.246 0:0:0:0:0:ffff:1f89:2af6
31.137.42.247 0:0:0:0:0:ffff:1f89:2af7
31.137.42.248 0:0:0:0:0:ffff:1f89:2af8
31.137.42.249 0:0:0:0:0:ffff:1f89:2af9
31.137.42.250 0:0:0:0:0:ffff:1f89:2afa
31.137.42.251 0:0:0:0:0:ffff:1f89:2afb
31.137.42.252 0:0:0:0:0:ffff:1f89:2afc
31.137.42.253 0:0:0:0:0:ffff:1f89:2afd
31.137.42.254 0:0:0:0:0:ffff:1f89:2afe
31.137.42.255 0:0:0:0:0:ffff:1f89:2aff


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.