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
157.187.221.1 0:0:0:0:0:ffff:9dbb:dd01
157.187.221.2 0:0:0:0:0:ffff:9dbb:dd02
157.187.221.3 0:0:0:0:0:ffff:9dbb:dd03
157.187.221.4 0:0:0:0:0:ffff:9dbb:dd04
157.187.221.5 0:0:0:0:0:ffff:9dbb:dd05
157.187.221.6 0:0:0:0:0:ffff:9dbb:dd06
157.187.221.7 0:0:0:0:0:ffff:9dbb:dd07
157.187.221.8 0:0:0:0:0:ffff:9dbb:dd08
157.187.221.9 0:0:0:0:0:ffff:9dbb:dd09
157.187.221.10 0:0:0:0:0:ffff:9dbb:dd0a
157.187.221.11 0:0:0:0:0:ffff:9dbb:dd0b
157.187.221.12 0:0:0:0:0:ffff:9dbb:dd0c
157.187.221.13 0:0:0:0:0:ffff:9dbb:dd0d
157.187.221.14 0:0:0:0:0:ffff:9dbb:dd0e
157.187.221.15 0:0:0:0:0:ffff:9dbb:dd0f
157.187.221.16 0:0:0:0:0:ffff:9dbb:dd10
157.187.221.17 0:0:0:0:0:ffff:9dbb:dd11
157.187.221.18 0:0:0:0:0:ffff:9dbb:dd12
157.187.221.19 0:0:0:0:0:ffff:9dbb:dd13
157.187.221.20 0:0:0:0:0:ffff:9dbb:dd14
157.187.221.21 0:0:0:0:0:ffff:9dbb:dd15
157.187.221.22 0:0:0:0:0:ffff:9dbb:dd16
157.187.221.23 0:0:0:0:0:ffff:9dbb:dd17
157.187.221.24 0:0:0:0:0:ffff:9dbb:dd18
157.187.221.25 0:0:0:0:0:ffff:9dbb:dd19
157.187.221.26 0:0:0:0:0:ffff:9dbb:dd1a
157.187.221.27 0:0:0:0:0:ffff:9dbb:dd1b
157.187.221.28 0:0:0:0:0:ffff:9dbb:dd1c
157.187.221.29 0:0:0:0:0:ffff:9dbb:dd1d
157.187.221.30 0:0:0:0:0:ffff:9dbb:dd1e
157.187.221.31 0:0:0:0:0:ffff:9dbb:dd1f
157.187.221.32 0:0:0:0:0:ffff:9dbb:dd20
157.187.221.33 0:0:0:0:0:ffff:9dbb:dd21
157.187.221.34 0:0:0:0:0:ffff:9dbb:dd22
157.187.221.35 0:0:0:0:0:ffff:9dbb:dd23
157.187.221.36 0:0:0:0:0:ffff:9dbb:dd24
157.187.221.37 0:0:0:0:0:ffff:9dbb:dd25
157.187.221.38 0:0:0:0:0:ffff:9dbb:dd26
157.187.221.39 0:0:0:0:0:ffff:9dbb:dd27
157.187.221.40 0:0:0:0:0:ffff:9dbb:dd28
157.187.221.41 0:0:0:0:0:ffff:9dbb:dd29
157.187.221.42 0:0:0:0:0:ffff:9dbb:dd2a
157.187.221.43 0:0:0:0:0:ffff:9dbb:dd2b
157.187.221.44 0:0:0:0:0:ffff:9dbb:dd2c
157.187.221.45 0:0:0:0:0:ffff:9dbb:dd2d
157.187.221.46 0:0:0:0:0:ffff:9dbb:dd2e
157.187.221.47 0:0:0:0:0:ffff:9dbb:dd2f
157.187.221.48 0:0:0:0:0:ffff:9dbb:dd30
157.187.221.49 0:0:0:0:0:ffff:9dbb:dd31
157.187.221.50 0:0:0:0:0:ffff:9dbb:dd32
157.187.221.51 0:0:0:0:0:ffff:9dbb:dd33
157.187.221.52 0:0:0:0:0:ffff:9dbb:dd34
157.187.221.53 0:0:0:0:0:ffff:9dbb:dd35
157.187.221.54 0:0:0:0:0:ffff:9dbb:dd36
157.187.221.55 0:0:0:0:0:ffff:9dbb:dd37
157.187.221.56 0:0:0:0:0:ffff:9dbb:dd38
157.187.221.57 0:0:0:0:0:ffff:9dbb:dd39
157.187.221.58 0:0:0:0:0:ffff:9dbb:dd3a
157.187.221.59 0:0:0:0:0:ffff:9dbb:dd3b
157.187.221.60 0:0:0:0:0:ffff:9dbb:dd3c


157.187.221.61 0:0:0:0:0:ffff:9dbb:dd3d
157.187.221.62 0:0:0:0:0:ffff:9dbb:dd3e
157.187.221.63 0:0:0:0:0:ffff:9dbb:dd3f
157.187.221.64 0:0:0:0:0:ffff:9dbb:dd40
157.187.221.65 0:0:0:0:0:ffff:9dbb:dd41
157.187.221.66 0:0:0:0:0:ffff:9dbb:dd42
157.187.221.67 0:0:0:0:0:ffff:9dbb:dd43
157.187.221.68 0:0:0:0:0:ffff:9dbb:dd44
157.187.221.69 0:0:0:0:0:ffff:9dbb:dd45
157.187.221.70 0:0:0:0:0:ffff:9dbb:dd46
157.187.221.71 0:0:0:0:0:ffff:9dbb:dd47
157.187.221.72 0:0:0:0:0:ffff:9dbb:dd48
157.187.221.73 0:0:0:0:0:ffff:9dbb:dd49
157.187.221.74 0:0:0:0:0:ffff:9dbb:dd4a
157.187.221.75 0:0:0:0:0:ffff:9dbb:dd4b
157.187.221.76 0:0:0:0:0:ffff:9dbb:dd4c
157.187.221.77 0:0:0:0:0:ffff:9dbb:dd4d
157.187.221.78 0:0:0:0:0:ffff:9dbb:dd4e
157.187.221.79 0:0:0:0:0:ffff:9dbb:dd4f
157.187.221.80 0:0:0:0:0:ffff:9dbb:dd50
157.187.221.81 0:0:0:0:0:ffff:9dbb:dd51
157.187.221.82 0:0:0:0:0:ffff:9dbb:dd52
157.187.221.83 0:0:0:0:0:ffff:9dbb:dd53
157.187.221.84 0:0:0:0:0:ffff:9dbb:dd54
157.187.221.85 0:0:0:0:0:ffff:9dbb:dd55
157.187.221.86 0:0:0:0:0:ffff:9dbb:dd56
157.187.221.87 0:0:0:0:0:ffff:9dbb:dd57
157.187.221.88 0:0:0:0:0:ffff:9dbb:dd58
157.187.221.89 0:0:0:0:0:ffff:9dbb:dd59
157.187.221.90 0:0:0:0:0:ffff:9dbb:dd5a
157.187.221.91 0:0:0:0:0:ffff:9dbb:dd5b
157.187.221.92 0:0:0:0:0:ffff:9dbb:dd5c
157.187.221.93 0:0:0:0:0:ffff:9dbb:dd5d
157.187.221.94 0:0:0:0:0:ffff:9dbb:dd5e
157.187.221.95 0:0:0:0:0:ffff:9dbb:dd5f
157.187.221.96 0:0:0:0:0:ffff:9dbb:dd60
157.187.221.97 0:0:0:0:0:ffff:9dbb:dd61
157.187.221.98 0:0:0:0:0:ffff:9dbb:dd62
157.187.221.99 0:0:0:0:0:ffff:9dbb:dd63
157.187.221.100 0:0:0:0:0:ffff:9dbb:dd64
157.187.221.101 0:0:0:0:0:ffff:9dbb:dd65
157.187.221.102 0:0:0:0:0:ffff:9dbb:dd66
157.187.221.103 0:0:0:0:0:ffff:9dbb:dd67
157.187.221.104 0:0:0:0:0:ffff:9dbb:dd68
157.187.221.105 0:0:0:0:0:ffff:9dbb:dd69
157.187.221.106 0:0:0:0:0:ffff:9dbb:dd6a
157.187.221.107 0:0:0:0:0:ffff:9dbb:dd6b
157.187.221.108 0:0:0:0:0:ffff:9dbb:dd6c
157.187.221.109 0:0:0:0:0:ffff:9dbb:dd6d
157.187.221.110 0:0:0:0:0:ffff:9dbb:dd6e
157.187.221.111 0:0:0:0:0:ffff:9dbb:dd6f
157.187.221.112 0:0:0:0:0:ffff:9dbb:dd70
157.187.221.113 0:0:0:0:0:ffff:9dbb:dd71
157.187.221.114 0:0:0:0:0:ffff:9dbb:dd72
157.187.221.115 0:0:0:0:0:ffff:9dbb:dd73
157.187.221.116 0:0:0:0:0:ffff:9dbb:dd74
157.187.221.117 0:0:0:0:0:ffff:9dbb:dd75
157.187.221.118 0:0:0:0:0:ffff:9dbb:dd76
157.187.221.119 0:0:0:0:0:ffff:9dbb:dd77
157.187.221.120 0:0:0:0:0:ffff:9dbb:dd78


157.187.221.121 0:0:0:0:0:ffff:9dbb:dd79
157.187.221.122 0:0:0:0:0:ffff:9dbb:dd7a
157.187.221.123 0:0:0:0:0:ffff:9dbb:dd7b
157.187.221.124 0:0:0:0:0:ffff:9dbb:dd7c
157.187.221.125 0:0:0:0:0:ffff:9dbb:dd7d
157.187.221.126 0:0:0:0:0:ffff:9dbb:dd7e
157.187.221.127 0:0:0:0:0:ffff:9dbb:dd7f
157.187.221.128 0:0:0:0:0:ffff:9dbb:dd80
157.187.221.129 0:0:0:0:0:ffff:9dbb:dd81
157.187.221.130 0:0:0:0:0:ffff:9dbb:dd82
157.187.221.131 0:0:0:0:0:ffff:9dbb:dd83
157.187.221.132 0:0:0:0:0:ffff:9dbb:dd84
157.187.221.133 0:0:0:0:0:ffff:9dbb:dd85
157.187.221.134 0:0:0:0:0:ffff:9dbb:dd86
157.187.221.135 0:0:0:0:0:ffff:9dbb:dd87
157.187.221.136 0:0:0:0:0:ffff:9dbb:dd88
157.187.221.137 0:0:0:0:0:ffff:9dbb:dd89
157.187.221.138 0:0:0:0:0:ffff:9dbb:dd8a
157.187.221.139 0:0:0:0:0:ffff:9dbb:dd8b
157.187.221.140 0:0:0:0:0:ffff:9dbb:dd8c
157.187.221.141 0:0:0:0:0:ffff:9dbb:dd8d
157.187.221.142 0:0:0:0:0:ffff:9dbb:dd8e
157.187.221.143 0:0:0:0:0:ffff:9dbb:dd8f
157.187.221.144 0:0:0:0:0:ffff:9dbb:dd90
157.187.221.145 0:0:0:0:0:ffff:9dbb:dd91
157.187.221.146 0:0:0:0:0:ffff:9dbb:dd92
157.187.221.147 0:0:0:0:0:ffff:9dbb:dd93
157.187.221.148 0:0:0:0:0:ffff:9dbb:dd94
157.187.221.149 0:0:0:0:0:ffff:9dbb:dd95
157.187.221.150 0:0:0:0:0:ffff:9dbb:dd96
157.187.221.151 0:0:0:0:0:ffff:9dbb:dd97
157.187.221.152 0:0:0:0:0:ffff:9dbb:dd98
157.187.221.153 0:0:0:0:0:ffff:9dbb:dd99
157.187.221.154 0:0:0:0:0:ffff:9dbb:dd9a
157.187.221.155 0:0:0:0:0:ffff:9dbb:dd9b
157.187.221.156 0:0:0:0:0:ffff:9dbb:dd9c
157.187.221.157 0:0:0:0:0:ffff:9dbb:dd9d
157.187.221.158 0:0:0:0:0:ffff:9dbb:dd9e
157.187.221.159 0:0:0:0:0:ffff:9dbb:dd9f
157.187.221.160 0:0:0:0:0:ffff:9dbb:dda0
157.187.221.161 0:0:0:0:0:ffff:9dbb:dda1
157.187.221.162 0:0:0:0:0:ffff:9dbb:dda2
157.187.221.163 0:0:0:0:0:ffff:9dbb:dda3
157.187.221.164 0:0:0:0:0:ffff:9dbb:dda4
157.187.221.165 0:0:0:0:0:ffff:9dbb:dda5
157.187.221.166 0:0:0:0:0:ffff:9dbb:dda6
157.187.221.167 0:0:0:0:0:ffff:9dbb:dda7
157.187.221.168 0:0:0:0:0:ffff:9dbb:dda8
157.187.221.169 0:0:0:0:0:ffff:9dbb:dda9
157.187.221.170 0:0:0:0:0:ffff:9dbb:ddaa
157.187.221.171 0:0:0:0:0:ffff:9dbb:ddab
157.187.221.172 0:0:0:0:0:ffff:9dbb:ddac
157.187.221.173 0:0:0:0:0:ffff:9dbb:ddad
157.187.221.174 0:0:0:0:0:ffff:9dbb:ddae
157.187.221.175 0:0:0:0:0:ffff:9dbb:ddaf
157.187.221.176 0:0:0:0:0:ffff:9dbb:ddb0
157.187.221.177 0:0:0:0:0:ffff:9dbb:ddb1
157.187.221.178 0:0:0:0:0:ffff:9dbb:ddb2
157.187.221.179 0:0:0:0:0:ffff:9dbb:ddb3
157.187.221.180 0:0:0:0:0:ffff:9dbb:ddb4


157.187.221.181 0:0:0:0:0:ffff:9dbb:ddb5
157.187.221.182 0:0:0:0:0:ffff:9dbb:ddb6
157.187.221.183 0:0:0:0:0:ffff:9dbb:ddb7
157.187.221.184 0:0:0:0:0:ffff:9dbb:ddb8
157.187.221.185 0:0:0:0:0:ffff:9dbb:ddb9
157.187.221.186 0:0:0:0:0:ffff:9dbb:ddba
157.187.221.187 0:0:0:0:0:ffff:9dbb:ddbb
157.187.221.188 0:0:0:0:0:ffff:9dbb:ddbc
157.187.221.189 0:0:0:0:0:ffff:9dbb:ddbd
157.187.221.190 0:0:0:0:0:ffff:9dbb:ddbe
157.187.221.191 0:0:0:0:0:ffff:9dbb:ddbf
157.187.221.192 0:0:0:0:0:ffff:9dbb:ddc0
157.187.221.193 0:0:0:0:0:ffff:9dbb:ddc1
157.187.221.194 0:0:0:0:0:ffff:9dbb:ddc2
157.187.221.195 0:0:0:0:0:ffff:9dbb:ddc3
157.187.221.196 0:0:0:0:0:ffff:9dbb:ddc4
157.187.221.197 0:0:0:0:0:ffff:9dbb:ddc5
157.187.221.198 0:0:0:0:0:ffff:9dbb:ddc6
157.187.221.199 0:0:0:0:0:ffff:9dbb:ddc7
157.187.221.200 0:0:0:0:0:ffff:9dbb:ddc8
157.187.221.201 0:0:0:0:0:ffff:9dbb:ddc9
157.187.221.202 0:0:0:0:0:ffff:9dbb:ddca
157.187.221.203 0:0:0:0:0:ffff:9dbb:ddcb
157.187.221.204 0:0:0:0:0:ffff:9dbb:ddcc
157.187.221.205 0:0:0:0:0:ffff:9dbb:ddcd
157.187.221.206 0:0:0:0:0:ffff:9dbb:ddce
157.187.221.207 0:0:0:0:0:ffff:9dbb:ddcf
157.187.221.208 0:0:0:0:0:ffff:9dbb:ddd0
157.187.221.209 0:0:0:0:0:ffff:9dbb:ddd1
157.187.221.210 0:0:0:0:0:ffff:9dbb:ddd2
157.187.221.211 0:0:0:0:0:ffff:9dbb:ddd3
157.187.221.212 0:0:0:0:0:ffff:9dbb:ddd4
157.187.221.213 0:0:0:0:0:ffff:9dbb:ddd5
157.187.221.214 0:0:0:0:0:ffff:9dbb:ddd6
157.187.221.215 0:0:0:0:0:ffff:9dbb:ddd7
157.187.221.216 0:0:0:0:0:ffff:9dbb:ddd8
157.187.221.217 0:0:0:0:0:ffff:9dbb:ddd9
157.187.221.218 0:0:0:0:0:ffff:9dbb:ddda
157.187.221.219 0:0:0:0:0:ffff:9dbb:dddb
157.187.221.220 0:0:0:0:0:ffff:9dbb:dddc
157.187.221.221 0:0:0:0:0:ffff:9dbb:dddd
157.187.221.222 0:0:0:0:0:ffff:9dbb:ddde
157.187.221.223 0:0:0:0:0:ffff:9dbb:dddf
157.187.221.224 0:0:0:0:0:ffff:9dbb:dde0
157.187.221.225 0:0:0:0:0:ffff:9dbb:dde1
157.187.221.226 0:0:0:0:0:ffff:9dbb:dde2
157.187.221.227 0:0:0:0:0:ffff:9dbb:dde3
157.187.221.228 0:0:0:0:0:ffff:9dbb:dde4
157.187.221.229 0:0:0:0:0:ffff:9dbb:dde5
157.187.221.230 0:0:0:0:0:ffff:9dbb:dde6
157.187.221.231 0:0:0:0:0:ffff:9dbb:dde7
157.187.221.232 0:0:0:0:0:ffff:9dbb:dde8
157.187.221.233 0:0:0:0:0:ffff:9dbb:dde9
157.187.221.234 0:0:0:0:0:ffff:9dbb:ddea
157.187.221.235 0:0:0:0:0:ffff:9dbb:ddeb
157.187.221.236 0:0:0:0:0:ffff:9dbb:ddec
157.187.221.237 0:0:0:0:0:ffff:9dbb:dded
157.187.221.238 0:0:0:0:0:ffff:9dbb:ddee
157.187.221.239 0:0:0:0:0:ffff:9dbb:ddef
157.187.221.240 0:0:0:0:0:ffff:9dbb:ddf0
157.187.221.241 0:0:0:0:0:ffff:9dbb:ddf1
157.187.221.242 0:0:0:0:0:ffff:9dbb:ddf2
157.187.221.243 0:0:0:0:0:ffff:9dbb:ddf3
157.187.221.244 0:0:0:0:0:ffff:9dbb:ddf4
157.187.221.245 0:0:0:0:0:ffff:9dbb:ddf5
157.187.221.246 0:0:0:0:0:ffff:9dbb:ddf6
157.187.221.247 0:0:0:0:0:ffff:9dbb:ddf7
157.187.221.248 0:0:0:0:0:ffff:9dbb:ddf8
157.187.221.249 0:0:0:0:0:ffff:9dbb:ddf9
157.187.221.250 0:0:0:0:0:ffff:9dbb:ddfa
157.187.221.251 0:0:0:0:0:ffff:9dbb:ddfb
157.187.221.252 0:0:0:0:0:ffff:9dbb:ddfc
157.187.221.253 0:0:0:0:0:ffff:9dbb:ddfd
157.187.221.254 0:0:0:0:0:ffff:9dbb:ddfe
157.187.221.255 0:0:0:0:0:ffff:9dbb:ddff


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.