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
42.123.236.1 0:0:0:0:0:ffff:2a7b:ec01
42.123.236.2 0:0:0:0:0:ffff:2a7b:ec02
42.123.236.3 0:0:0:0:0:ffff:2a7b:ec03
42.123.236.4 0:0:0:0:0:ffff:2a7b:ec04
42.123.236.5 0:0:0:0:0:ffff:2a7b:ec05
42.123.236.6 0:0:0:0:0:ffff:2a7b:ec06
42.123.236.7 0:0:0:0:0:ffff:2a7b:ec07
42.123.236.8 0:0:0:0:0:ffff:2a7b:ec08
42.123.236.9 0:0:0:0:0:ffff:2a7b:ec09
42.123.236.10 0:0:0:0:0:ffff:2a7b:ec0a
42.123.236.11 0:0:0:0:0:ffff:2a7b:ec0b
42.123.236.12 0:0:0:0:0:ffff:2a7b:ec0c
42.123.236.13 0:0:0:0:0:ffff:2a7b:ec0d
42.123.236.14 0:0:0:0:0:ffff:2a7b:ec0e
42.123.236.15 0:0:0:0:0:ffff:2a7b:ec0f
42.123.236.16 0:0:0:0:0:ffff:2a7b:ec10
42.123.236.17 0:0:0:0:0:ffff:2a7b:ec11
42.123.236.18 0:0:0:0:0:ffff:2a7b:ec12
42.123.236.19 0:0:0:0:0:ffff:2a7b:ec13
42.123.236.20 0:0:0:0:0:ffff:2a7b:ec14
42.123.236.21 0:0:0:0:0:ffff:2a7b:ec15
42.123.236.22 0:0:0:0:0:ffff:2a7b:ec16
42.123.236.23 0:0:0:0:0:ffff:2a7b:ec17
42.123.236.24 0:0:0:0:0:ffff:2a7b:ec18
42.123.236.25 0:0:0:0:0:ffff:2a7b:ec19
42.123.236.26 0:0:0:0:0:ffff:2a7b:ec1a
42.123.236.27 0:0:0:0:0:ffff:2a7b:ec1b
42.123.236.28 0:0:0:0:0:ffff:2a7b:ec1c
42.123.236.29 0:0:0:0:0:ffff:2a7b:ec1d
42.123.236.30 0:0:0:0:0:ffff:2a7b:ec1e
42.123.236.31 0:0:0:0:0:ffff:2a7b:ec1f
42.123.236.32 0:0:0:0:0:ffff:2a7b:ec20
42.123.236.33 0:0:0:0:0:ffff:2a7b:ec21
42.123.236.34 0:0:0:0:0:ffff:2a7b:ec22
42.123.236.35 0:0:0:0:0:ffff:2a7b:ec23
42.123.236.36 0:0:0:0:0:ffff:2a7b:ec24
42.123.236.37 0:0:0:0:0:ffff:2a7b:ec25
42.123.236.38 0:0:0:0:0:ffff:2a7b:ec26
42.123.236.39 0:0:0:0:0:ffff:2a7b:ec27
42.123.236.40 0:0:0:0:0:ffff:2a7b:ec28
42.123.236.41 0:0:0:0:0:ffff:2a7b:ec29
42.123.236.42 0:0:0:0:0:ffff:2a7b:ec2a
42.123.236.43 0:0:0:0:0:ffff:2a7b:ec2b
42.123.236.44 0:0:0:0:0:ffff:2a7b:ec2c
42.123.236.45 0:0:0:0:0:ffff:2a7b:ec2d
42.123.236.46 0:0:0:0:0:ffff:2a7b:ec2e
42.123.236.47 0:0:0:0:0:ffff:2a7b:ec2f
42.123.236.48 0:0:0:0:0:ffff:2a7b:ec30
42.123.236.49 0:0:0:0:0:ffff:2a7b:ec31
42.123.236.50 0:0:0:0:0:ffff:2a7b:ec32
42.123.236.51 0:0:0:0:0:ffff:2a7b:ec33
42.123.236.52 0:0:0:0:0:ffff:2a7b:ec34
42.123.236.53 0:0:0:0:0:ffff:2a7b:ec35
42.123.236.54 0:0:0:0:0:ffff:2a7b:ec36
42.123.236.55 0:0:0:0:0:ffff:2a7b:ec37
42.123.236.56 0:0:0:0:0:ffff:2a7b:ec38
42.123.236.57 0:0:0:0:0:ffff:2a7b:ec39
42.123.236.58 0:0:0:0:0:ffff:2a7b:ec3a
42.123.236.59 0:0:0:0:0:ffff:2a7b:ec3b
42.123.236.60 0:0:0:0:0:ffff:2a7b:ec3c


42.123.236.61 0:0:0:0:0:ffff:2a7b:ec3d
42.123.236.62 0:0:0:0:0:ffff:2a7b:ec3e
42.123.236.63 0:0:0:0:0:ffff:2a7b:ec3f
42.123.236.64 0:0:0:0:0:ffff:2a7b:ec40
42.123.236.65 0:0:0:0:0:ffff:2a7b:ec41
42.123.236.66 0:0:0:0:0:ffff:2a7b:ec42
42.123.236.67 0:0:0:0:0:ffff:2a7b:ec43
42.123.236.68 0:0:0:0:0:ffff:2a7b:ec44
42.123.236.69 0:0:0:0:0:ffff:2a7b:ec45
42.123.236.70 0:0:0:0:0:ffff:2a7b:ec46
42.123.236.71 0:0:0:0:0:ffff:2a7b:ec47
42.123.236.72 0:0:0:0:0:ffff:2a7b:ec48
42.123.236.73 0:0:0:0:0:ffff:2a7b:ec49
42.123.236.74 0:0:0:0:0:ffff:2a7b:ec4a
42.123.236.75 0:0:0:0:0:ffff:2a7b:ec4b
42.123.236.76 0:0:0:0:0:ffff:2a7b:ec4c
42.123.236.77 0:0:0:0:0:ffff:2a7b:ec4d
42.123.236.78 0:0:0:0:0:ffff:2a7b:ec4e
42.123.236.79 0:0:0:0:0:ffff:2a7b:ec4f
42.123.236.80 0:0:0:0:0:ffff:2a7b:ec50
42.123.236.81 0:0:0:0:0:ffff:2a7b:ec51
42.123.236.82 0:0:0:0:0:ffff:2a7b:ec52
42.123.236.83 0:0:0:0:0:ffff:2a7b:ec53
42.123.236.84 0:0:0:0:0:ffff:2a7b:ec54
42.123.236.85 0:0:0:0:0:ffff:2a7b:ec55
42.123.236.86 0:0:0:0:0:ffff:2a7b:ec56
42.123.236.87 0:0:0:0:0:ffff:2a7b:ec57
42.123.236.88 0:0:0:0:0:ffff:2a7b:ec58
42.123.236.89 0:0:0:0:0:ffff:2a7b:ec59
42.123.236.90 0:0:0:0:0:ffff:2a7b:ec5a
42.123.236.91 0:0:0:0:0:ffff:2a7b:ec5b
42.123.236.92 0:0:0:0:0:ffff:2a7b:ec5c
42.123.236.93 0:0:0:0:0:ffff:2a7b:ec5d
42.123.236.94 0:0:0:0:0:ffff:2a7b:ec5e
42.123.236.95 0:0:0:0:0:ffff:2a7b:ec5f
42.123.236.96 0:0:0:0:0:ffff:2a7b:ec60
42.123.236.97 0:0:0:0:0:ffff:2a7b:ec61
42.123.236.98 0:0:0:0:0:ffff:2a7b:ec62
42.123.236.99 0:0:0:0:0:ffff:2a7b:ec63
42.123.236.100 0:0:0:0:0:ffff:2a7b:ec64
42.123.236.101 0:0:0:0:0:ffff:2a7b:ec65
42.123.236.102 0:0:0:0:0:ffff:2a7b:ec66
42.123.236.103 0:0:0:0:0:ffff:2a7b:ec67
42.123.236.104 0:0:0:0:0:ffff:2a7b:ec68
42.123.236.105 0:0:0:0:0:ffff:2a7b:ec69
42.123.236.106 0:0:0:0:0:ffff:2a7b:ec6a
42.123.236.107 0:0:0:0:0:ffff:2a7b:ec6b
42.123.236.108 0:0:0:0:0:ffff:2a7b:ec6c
42.123.236.109 0:0:0:0:0:ffff:2a7b:ec6d
42.123.236.110 0:0:0:0:0:ffff:2a7b:ec6e
42.123.236.111 0:0:0:0:0:ffff:2a7b:ec6f
42.123.236.112 0:0:0:0:0:ffff:2a7b:ec70
42.123.236.113 0:0:0:0:0:ffff:2a7b:ec71
42.123.236.114 0:0:0:0:0:ffff:2a7b:ec72
42.123.236.115 0:0:0:0:0:ffff:2a7b:ec73
42.123.236.116 0:0:0:0:0:ffff:2a7b:ec74
42.123.236.117 0:0:0:0:0:ffff:2a7b:ec75
42.123.236.118 0:0:0:0:0:ffff:2a7b:ec76
42.123.236.119 0:0:0:0:0:ffff:2a7b:ec77
42.123.236.120 0:0:0:0:0:ffff:2a7b:ec78


42.123.236.121 0:0:0:0:0:ffff:2a7b:ec79
42.123.236.122 0:0:0:0:0:ffff:2a7b:ec7a
42.123.236.123 0:0:0:0:0:ffff:2a7b:ec7b
42.123.236.124 0:0:0:0:0:ffff:2a7b:ec7c
42.123.236.125 0:0:0:0:0:ffff:2a7b:ec7d
42.123.236.126 0:0:0:0:0:ffff:2a7b:ec7e
42.123.236.127 0:0:0:0:0:ffff:2a7b:ec7f
42.123.236.128 0:0:0:0:0:ffff:2a7b:ec80
42.123.236.129 0:0:0:0:0:ffff:2a7b:ec81
42.123.236.130 0:0:0:0:0:ffff:2a7b:ec82
42.123.236.131 0:0:0:0:0:ffff:2a7b:ec83
42.123.236.132 0:0:0:0:0:ffff:2a7b:ec84
42.123.236.133 0:0:0:0:0:ffff:2a7b:ec85
42.123.236.134 0:0:0:0:0:ffff:2a7b:ec86
42.123.236.135 0:0:0:0:0:ffff:2a7b:ec87
42.123.236.136 0:0:0:0:0:ffff:2a7b:ec88
42.123.236.137 0:0:0:0:0:ffff:2a7b:ec89
42.123.236.138 0:0:0:0:0:ffff:2a7b:ec8a
42.123.236.139 0:0:0:0:0:ffff:2a7b:ec8b
42.123.236.140 0:0:0:0:0:ffff:2a7b:ec8c
42.123.236.141 0:0:0:0:0:ffff:2a7b:ec8d
42.123.236.142 0:0:0:0:0:ffff:2a7b:ec8e
42.123.236.143 0:0:0:0:0:ffff:2a7b:ec8f
42.123.236.144 0:0:0:0:0:ffff:2a7b:ec90
42.123.236.145 0:0:0:0:0:ffff:2a7b:ec91
42.123.236.146 0:0:0:0:0:ffff:2a7b:ec92
42.123.236.147 0:0:0:0:0:ffff:2a7b:ec93
42.123.236.148 0:0:0:0:0:ffff:2a7b:ec94
42.123.236.149 0:0:0:0:0:ffff:2a7b:ec95
42.123.236.150 0:0:0:0:0:ffff:2a7b:ec96
42.123.236.151 0:0:0:0:0:ffff:2a7b:ec97
42.123.236.152 0:0:0:0:0:ffff:2a7b:ec98
42.123.236.153 0:0:0:0:0:ffff:2a7b:ec99
42.123.236.154 0:0:0:0:0:ffff:2a7b:ec9a
42.123.236.155 0:0:0:0:0:ffff:2a7b:ec9b
42.123.236.156 0:0:0:0:0:ffff:2a7b:ec9c
42.123.236.157 0:0:0:0:0:ffff:2a7b:ec9d
42.123.236.158 0:0:0:0:0:ffff:2a7b:ec9e
42.123.236.159 0:0:0:0:0:ffff:2a7b:ec9f
42.123.236.160 0:0:0:0:0:ffff:2a7b:eca0
42.123.236.161 0:0:0:0:0:ffff:2a7b:eca1
42.123.236.162 0:0:0:0:0:ffff:2a7b:eca2
42.123.236.163 0:0:0:0:0:ffff:2a7b:eca3
42.123.236.164 0:0:0:0:0:ffff:2a7b:eca4
42.123.236.165 0:0:0:0:0:ffff:2a7b:eca5
42.123.236.166 0:0:0:0:0:ffff:2a7b:eca6
42.123.236.167 0:0:0:0:0:ffff:2a7b:eca7
42.123.236.168 0:0:0:0:0:ffff:2a7b:eca8
42.123.236.169 0:0:0:0:0:ffff:2a7b:eca9
42.123.236.170 0:0:0:0:0:ffff:2a7b:ecaa
42.123.236.171 0:0:0:0:0:ffff:2a7b:ecab
42.123.236.172 0:0:0:0:0:ffff:2a7b:ecac
42.123.236.173 0:0:0:0:0:ffff:2a7b:ecad
42.123.236.174 0:0:0:0:0:ffff:2a7b:ecae
42.123.236.175 0:0:0:0:0:ffff:2a7b:ecaf
42.123.236.176 0:0:0:0:0:ffff:2a7b:ecb0
42.123.236.177 0:0:0:0:0:ffff:2a7b:ecb1
42.123.236.178 0:0:0:0:0:ffff:2a7b:ecb2
42.123.236.179 0:0:0:0:0:ffff:2a7b:ecb3
42.123.236.180 0:0:0:0:0:ffff:2a7b:ecb4


42.123.236.181 0:0:0:0:0:ffff:2a7b:ecb5
42.123.236.182 0:0:0:0:0:ffff:2a7b:ecb6
42.123.236.183 0:0:0:0:0:ffff:2a7b:ecb7
42.123.236.184 0:0:0:0:0:ffff:2a7b:ecb8
42.123.236.185 0:0:0:0:0:ffff:2a7b:ecb9
42.123.236.186 0:0:0:0:0:ffff:2a7b:ecba
42.123.236.187 0:0:0:0:0:ffff:2a7b:ecbb
42.123.236.188 0:0:0:0:0:ffff:2a7b:ecbc
42.123.236.189 0:0:0:0:0:ffff:2a7b:ecbd
42.123.236.190 0:0:0:0:0:ffff:2a7b:ecbe
42.123.236.191 0:0:0:0:0:ffff:2a7b:ecbf
42.123.236.192 0:0:0:0:0:ffff:2a7b:ecc0
42.123.236.193 0:0:0:0:0:ffff:2a7b:ecc1
42.123.236.194 0:0:0:0:0:ffff:2a7b:ecc2
42.123.236.195 0:0:0:0:0:ffff:2a7b:ecc3
42.123.236.196 0:0:0:0:0:ffff:2a7b:ecc4
42.123.236.197 0:0:0:0:0:ffff:2a7b:ecc5
42.123.236.198 0:0:0:0:0:ffff:2a7b:ecc6
42.123.236.199 0:0:0:0:0:ffff:2a7b:ecc7
42.123.236.200 0:0:0:0:0:ffff:2a7b:ecc8
42.123.236.201 0:0:0:0:0:ffff:2a7b:ecc9
42.123.236.202 0:0:0:0:0:ffff:2a7b:ecca
42.123.236.203 0:0:0:0:0:ffff:2a7b:eccb
42.123.236.204 0:0:0:0:0:ffff:2a7b:eccc
42.123.236.205 0:0:0:0:0:ffff:2a7b:eccd
42.123.236.206 0:0:0:0:0:ffff:2a7b:ecce
42.123.236.207 0:0:0:0:0:ffff:2a7b:eccf
42.123.236.208 0:0:0:0:0:ffff:2a7b:ecd0
42.123.236.209 0:0:0:0:0:ffff:2a7b:ecd1
42.123.236.210 0:0:0:0:0:ffff:2a7b:ecd2
42.123.236.211 0:0:0:0:0:ffff:2a7b:ecd3
42.123.236.212 0:0:0:0:0:ffff:2a7b:ecd4
42.123.236.213 0:0:0:0:0:ffff:2a7b:ecd5
42.123.236.214 0:0:0:0:0:ffff:2a7b:ecd6
42.123.236.215 0:0:0:0:0:ffff:2a7b:ecd7
42.123.236.216 0:0:0:0:0:ffff:2a7b:ecd8
42.123.236.217 0:0:0:0:0:ffff:2a7b:ecd9
42.123.236.218 0:0:0:0:0:ffff:2a7b:ecda
42.123.236.219 0:0:0:0:0:ffff:2a7b:ecdb
42.123.236.220 0:0:0:0:0:ffff:2a7b:ecdc
42.123.236.221 0:0:0:0:0:ffff:2a7b:ecdd
42.123.236.222 0:0:0:0:0:ffff:2a7b:ecde
42.123.236.223 0:0:0:0:0:ffff:2a7b:ecdf
42.123.236.224 0:0:0:0:0:ffff:2a7b:ece0
42.123.236.225 0:0:0:0:0:ffff:2a7b:ece1
42.123.236.226 0:0:0:0:0:ffff:2a7b:ece2
42.123.236.227 0:0:0:0:0:ffff:2a7b:ece3
42.123.236.228 0:0:0:0:0:ffff:2a7b:ece4
42.123.236.229 0:0:0:0:0:ffff:2a7b:ece5
42.123.236.230 0:0:0:0:0:ffff:2a7b:ece6
42.123.236.231 0:0:0:0:0:ffff:2a7b:ece7
42.123.236.232 0:0:0:0:0:ffff:2a7b:ece8
42.123.236.233 0:0:0:0:0:ffff:2a7b:ece9
42.123.236.234 0:0:0:0:0:ffff:2a7b:ecea
42.123.236.235 0:0:0:0:0:ffff:2a7b:eceb
42.123.236.236 0:0:0:0:0:ffff:2a7b:ecec
42.123.236.237 0:0:0:0:0:ffff:2a7b:eced
42.123.236.238 0:0:0:0:0:ffff:2a7b:ecee
42.123.236.239 0:0:0:0:0:ffff:2a7b:ecef
42.123.236.240 0:0:0:0:0:ffff:2a7b:ecf0
42.123.236.241 0:0:0:0:0:ffff:2a7b:ecf1
42.123.236.242 0:0:0:0:0:ffff:2a7b:ecf2
42.123.236.243 0:0:0:0:0:ffff:2a7b:ecf3
42.123.236.244 0:0:0:0:0:ffff:2a7b:ecf4
42.123.236.245 0:0:0:0:0:ffff:2a7b:ecf5
42.123.236.246 0:0:0:0:0:ffff:2a7b:ecf6
42.123.236.247 0:0:0:0:0:ffff:2a7b:ecf7
42.123.236.248 0:0:0:0:0:ffff:2a7b:ecf8
42.123.236.249 0:0:0:0:0:ffff:2a7b:ecf9
42.123.236.250 0:0:0:0:0:ffff:2a7b:ecfa
42.123.236.251 0:0:0:0:0:ffff:2a7b:ecfb
42.123.236.252 0:0:0:0:0:ffff:2a7b:ecfc
42.123.236.253 0:0:0:0:0:ffff:2a7b:ecfd
42.123.236.254 0:0:0:0:0:ffff:2a7b:ecfe
42.123.236.255 0:0:0:0:0:ffff:2a7b:ecff


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.