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
6.128.221.1 0:0:0:0:0:ffff:680:dd01
6.128.221.2 0:0:0:0:0:ffff:680:dd02
6.128.221.3 0:0:0:0:0:ffff:680:dd03
6.128.221.4 0:0:0:0:0:ffff:680:dd04
6.128.221.5 0:0:0:0:0:ffff:680:dd05
6.128.221.6 0:0:0:0:0:ffff:680:dd06
6.128.221.7 0:0:0:0:0:ffff:680:dd07
6.128.221.8 0:0:0:0:0:ffff:680:dd08
6.128.221.9 0:0:0:0:0:ffff:680:dd09
6.128.221.10 0:0:0:0:0:ffff:680:dd0a
6.128.221.11 0:0:0:0:0:ffff:680:dd0b
6.128.221.12 0:0:0:0:0:ffff:680:dd0c
6.128.221.13 0:0:0:0:0:ffff:680:dd0d
6.128.221.14 0:0:0:0:0:ffff:680:dd0e
6.128.221.15 0:0:0:0:0:ffff:680:dd0f
6.128.221.16 0:0:0:0:0:ffff:680:dd10
6.128.221.17 0:0:0:0:0:ffff:680:dd11
6.128.221.18 0:0:0:0:0:ffff:680:dd12
6.128.221.19 0:0:0:0:0:ffff:680:dd13
6.128.221.20 0:0:0:0:0:ffff:680:dd14
6.128.221.21 0:0:0:0:0:ffff:680:dd15
6.128.221.22 0:0:0:0:0:ffff:680:dd16
6.128.221.23 0:0:0:0:0:ffff:680:dd17
6.128.221.24 0:0:0:0:0:ffff:680:dd18
6.128.221.25 0:0:0:0:0:ffff:680:dd19
6.128.221.26 0:0:0:0:0:ffff:680:dd1a
6.128.221.27 0:0:0:0:0:ffff:680:dd1b
6.128.221.28 0:0:0:0:0:ffff:680:dd1c
6.128.221.29 0:0:0:0:0:ffff:680:dd1d
6.128.221.30 0:0:0:0:0:ffff:680:dd1e
6.128.221.31 0:0:0:0:0:ffff:680:dd1f
6.128.221.32 0:0:0:0:0:ffff:680:dd20
6.128.221.33 0:0:0:0:0:ffff:680:dd21
6.128.221.34 0:0:0:0:0:ffff:680:dd22
6.128.221.35 0:0:0:0:0:ffff:680:dd23
6.128.221.36 0:0:0:0:0:ffff:680:dd24
6.128.221.37 0:0:0:0:0:ffff:680:dd25
6.128.221.38 0:0:0:0:0:ffff:680:dd26
6.128.221.39 0:0:0:0:0:ffff:680:dd27
6.128.221.40 0:0:0:0:0:ffff:680:dd28
6.128.221.41 0:0:0:0:0:ffff:680:dd29
6.128.221.42 0:0:0:0:0:ffff:680:dd2a
6.128.221.43 0:0:0:0:0:ffff:680:dd2b
6.128.221.44 0:0:0:0:0:ffff:680:dd2c
6.128.221.45 0:0:0:0:0:ffff:680:dd2d
6.128.221.46 0:0:0:0:0:ffff:680:dd2e
6.128.221.47 0:0:0:0:0:ffff:680:dd2f
6.128.221.48 0:0:0:0:0:ffff:680:dd30
6.128.221.49 0:0:0:0:0:ffff:680:dd31
6.128.221.50 0:0:0:0:0:ffff:680:dd32
6.128.221.51 0:0:0:0:0:ffff:680:dd33
6.128.221.52 0:0:0:0:0:ffff:680:dd34
6.128.221.53 0:0:0:0:0:ffff:680:dd35
6.128.221.54 0:0:0:0:0:ffff:680:dd36
6.128.221.55 0:0:0:0:0:ffff:680:dd37
6.128.221.56 0:0:0:0:0:ffff:680:dd38
6.128.221.57 0:0:0:0:0:ffff:680:dd39
6.128.221.58 0:0:0:0:0:ffff:680:dd3a
6.128.221.59 0:0:0:0:0:ffff:680:dd3b
6.128.221.60 0:0:0:0:0:ffff:680:dd3c


6.128.221.61 0:0:0:0:0:ffff:680:dd3d
6.128.221.62 0:0:0:0:0:ffff:680:dd3e
6.128.221.63 0:0:0:0:0:ffff:680:dd3f
6.128.221.64 0:0:0:0:0:ffff:680:dd40
6.128.221.65 0:0:0:0:0:ffff:680:dd41
6.128.221.66 0:0:0:0:0:ffff:680:dd42
6.128.221.67 0:0:0:0:0:ffff:680:dd43
6.128.221.68 0:0:0:0:0:ffff:680:dd44
6.128.221.69 0:0:0:0:0:ffff:680:dd45
6.128.221.70 0:0:0:0:0:ffff:680:dd46
6.128.221.71 0:0:0:0:0:ffff:680:dd47
6.128.221.72 0:0:0:0:0:ffff:680:dd48
6.128.221.73 0:0:0:0:0:ffff:680:dd49
6.128.221.74 0:0:0:0:0:ffff:680:dd4a
6.128.221.75 0:0:0:0:0:ffff:680:dd4b
6.128.221.76 0:0:0:0:0:ffff:680:dd4c
6.128.221.77 0:0:0:0:0:ffff:680:dd4d
6.128.221.78 0:0:0:0:0:ffff:680:dd4e
6.128.221.79 0:0:0:0:0:ffff:680:dd4f
6.128.221.80 0:0:0:0:0:ffff:680:dd50
6.128.221.81 0:0:0:0:0:ffff:680:dd51
6.128.221.82 0:0:0:0:0:ffff:680:dd52
6.128.221.83 0:0:0:0:0:ffff:680:dd53
6.128.221.84 0:0:0:0:0:ffff:680:dd54
6.128.221.85 0:0:0:0:0:ffff:680:dd55
6.128.221.86 0:0:0:0:0:ffff:680:dd56
6.128.221.87 0:0:0:0:0:ffff:680:dd57
6.128.221.88 0:0:0:0:0:ffff:680:dd58
6.128.221.89 0:0:0:0:0:ffff:680:dd59
6.128.221.90 0:0:0:0:0:ffff:680:dd5a
6.128.221.91 0:0:0:0:0:ffff:680:dd5b
6.128.221.92 0:0:0:0:0:ffff:680:dd5c
6.128.221.93 0:0:0:0:0:ffff:680:dd5d
6.128.221.94 0:0:0:0:0:ffff:680:dd5e
6.128.221.95 0:0:0:0:0:ffff:680:dd5f
6.128.221.96 0:0:0:0:0:ffff:680:dd60
6.128.221.97 0:0:0:0:0:ffff:680:dd61
6.128.221.98 0:0:0:0:0:ffff:680:dd62
6.128.221.99 0:0:0:0:0:ffff:680:dd63
6.128.221.100 0:0:0:0:0:ffff:680:dd64
6.128.221.101 0:0:0:0:0:ffff:680:dd65
6.128.221.102 0:0:0:0:0:ffff:680:dd66
6.128.221.103 0:0:0:0:0:ffff:680:dd67
6.128.221.104 0:0:0:0:0:ffff:680:dd68
6.128.221.105 0:0:0:0:0:ffff:680:dd69
6.128.221.106 0:0:0:0:0:ffff:680:dd6a
6.128.221.107 0:0:0:0:0:ffff:680:dd6b
6.128.221.108 0:0:0:0:0:ffff:680:dd6c
6.128.221.109 0:0:0:0:0:ffff:680:dd6d
6.128.221.110 0:0:0:0:0:ffff:680:dd6e
6.128.221.111 0:0:0:0:0:ffff:680:dd6f
6.128.221.112 0:0:0:0:0:ffff:680:dd70
6.128.221.113 0:0:0:0:0:ffff:680:dd71
6.128.221.114 0:0:0:0:0:ffff:680:dd72
6.128.221.115 0:0:0:0:0:ffff:680:dd73
6.128.221.116 0:0:0:0:0:ffff:680:dd74
6.128.221.117 0:0:0:0:0:ffff:680:dd75
6.128.221.118 0:0:0:0:0:ffff:680:dd76
6.128.221.119 0:0:0:0:0:ffff:680:dd77
6.128.221.120 0:0:0:0:0:ffff:680:dd78


6.128.221.121 0:0:0:0:0:ffff:680:dd79
6.128.221.122 0:0:0:0:0:ffff:680:dd7a
6.128.221.123 0:0:0:0:0:ffff:680:dd7b
6.128.221.124 0:0:0:0:0:ffff:680:dd7c
6.128.221.125 0:0:0:0:0:ffff:680:dd7d
6.128.221.126 0:0:0:0:0:ffff:680:dd7e
6.128.221.127 0:0:0:0:0:ffff:680:dd7f
6.128.221.128 0:0:0:0:0:ffff:680:dd80
6.128.221.129 0:0:0:0:0:ffff:680:dd81
6.128.221.130 0:0:0:0:0:ffff:680:dd82
6.128.221.131 0:0:0:0:0:ffff:680:dd83
6.128.221.132 0:0:0:0:0:ffff:680:dd84
6.128.221.133 0:0:0:0:0:ffff:680:dd85
6.128.221.134 0:0:0:0:0:ffff:680:dd86
6.128.221.135 0:0:0:0:0:ffff:680:dd87
6.128.221.136 0:0:0:0:0:ffff:680:dd88
6.128.221.137 0:0:0:0:0:ffff:680:dd89
6.128.221.138 0:0:0:0:0:ffff:680:dd8a
6.128.221.139 0:0:0:0:0:ffff:680:dd8b
6.128.221.140 0:0:0:0:0:ffff:680:dd8c
6.128.221.141 0:0:0:0:0:ffff:680:dd8d
6.128.221.142 0:0:0:0:0:ffff:680:dd8e
6.128.221.143 0:0:0:0:0:ffff:680:dd8f
6.128.221.144 0:0:0:0:0:ffff:680:dd90
6.128.221.145 0:0:0:0:0:ffff:680:dd91
6.128.221.146 0:0:0:0:0:ffff:680:dd92
6.128.221.147 0:0:0:0:0:ffff:680:dd93
6.128.221.148 0:0:0:0:0:ffff:680:dd94
6.128.221.149 0:0:0:0:0:ffff:680:dd95
6.128.221.150 0:0:0:0:0:ffff:680:dd96
6.128.221.151 0:0:0:0:0:ffff:680:dd97
6.128.221.152 0:0:0:0:0:ffff:680:dd98
6.128.221.153 0:0:0:0:0:ffff:680:dd99
6.128.221.154 0:0:0:0:0:ffff:680:dd9a
6.128.221.155 0:0:0:0:0:ffff:680:dd9b
6.128.221.156 0:0:0:0:0:ffff:680:dd9c
6.128.221.157 0:0:0:0:0:ffff:680:dd9d
6.128.221.158 0:0:0:0:0:ffff:680:dd9e
6.128.221.159 0:0:0:0:0:ffff:680:dd9f
6.128.221.160 0:0:0:0:0:ffff:680:dda0
6.128.221.161 0:0:0:0:0:ffff:680:dda1
6.128.221.162 0:0:0:0:0:ffff:680:dda2
6.128.221.163 0:0:0:0:0:ffff:680:dda3
6.128.221.164 0:0:0:0:0:ffff:680:dda4
6.128.221.165 0:0:0:0:0:ffff:680:dda5
6.128.221.166 0:0:0:0:0:ffff:680:dda6
6.128.221.167 0:0:0:0:0:ffff:680:dda7
6.128.221.168 0:0:0:0:0:ffff:680:dda8
6.128.221.169 0:0:0:0:0:ffff:680:dda9
6.128.221.170 0:0:0:0:0:ffff:680:ddaa
6.128.221.171 0:0:0:0:0:ffff:680:ddab
6.128.221.172 0:0:0:0:0:ffff:680:ddac
6.128.221.173 0:0:0:0:0:ffff:680:ddad
6.128.221.174 0:0:0:0:0:ffff:680:ddae
6.128.221.175 0:0:0:0:0:ffff:680:ddaf
6.128.221.176 0:0:0:0:0:ffff:680:ddb0
6.128.221.177 0:0:0:0:0:ffff:680:ddb1
6.128.221.178 0:0:0:0:0:ffff:680:ddb2
6.128.221.179 0:0:0:0:0:ffff:680:ddb3
6.128.221.180 0:0:0:0:0:ffff:680:ddb4


6.128.221.181 0:0:0:0:0:ffff:680:ddb5
6.128.221.182 0:0:0:0:0:ffff:680:ddb6
6.128.221.183 0:0:0:0:0:ffff:680:ddb7
6.128.221.184 0:0:0:0:0:ffff:680:ddb8
6.128.221.185 0:0:0:0:0:ffff:680:ddb9
6.128.221.186 0:0:0:0:0:ffff:680:ddba
6.128.221.187 0:0:0:0:0:ffff:680:ddbb
6.128.221.188 0:0:0:0:0:ffff:680:ddbc
6.128.221.189 0:0:0:0:0:ffff:680:ddbd
6.128.221.190 0:0:0:0:0:ffff:680:ddbe
6.128.221.191 0:0:0:0:0:ffff:680:ddbf
6.128.221.192 0:0:0:0:0:ffff:680:ddc0
6.128.221.193 0:0:0:0:0:ffff:680:ddc1
6.128.221.194 0:0:0:0:0:ffff:680:ddc2
6.128.221.195 0:0:0:0:0:ffff:680:ddc3
6.128.221.196 0:0:0:0:0:ffff:680:ddc4
6.128.221.197 0:0:0:0:0:ffff:680:ddc5
6.128.221.198 0:0:0:0:0:ffff:680:ddc6
6.128.221.199 0:0:0:0:0:ffff:680:ddc7
6.128.221.200 0:0:0:0:0:ffff:680:ddc8
6.128.221.201 0:0:0:0:0:ffff:680:ddc9
6.128.221.202 0:0:0:0:0:ffff:680:ddca
6.128.221.203 0:0:0:0:0:ffff:680:ddcb
6.128.221.204 0:0:0:0:0:ffff:680:ddcc
6.128.221.205 0:0:0:0:0:ffff:680:ddcd
6.128.221.206 0:0:0:0:0:ffff:680:ddce
6.128.221.207 0:0:0:0:0:ffff:680:ddcf
6.128.221.208 0:0:0:0:0:ffff:680:ddd0
6.128.221.209 0:0:0:0:0:ffff:680:ddd1
6.128.221.210 0:0:0:0:0:ffff:680:ddd2
6.128.221.211 0:0:0:0:0:ffff:680:ddd3
6.128.221.212 0:0:0:0:0:ffff:680:ddd4
6.128.221.213 0:0:0:0:0:ffff:680:ddd5
6.128.221.214 0:0:0:0:0:ffff:680:ddd6
6.128.221.215 0:0:0:0:0:ffff:680:ddd7
6.128.221.216 0:0:0:0:0:ffff:680:ddd8
6.128.221.217 0:0:0:0:0:ffff:680:ddd9
6.128.221.218 0:0:0:0:0:ffff:680:ddda
6.128.221.219 0:0:0:0:0:ffff:680:dddb
6.128.221.220 0:0:0:0:0:ffff:680:dddc
6.128.221.221 0:0:0:0:0:ffff:680:dddd
6.128.221.222 0:0:0:0:0:ffff:680:ddde
6.128.221.223 0:0:0:0:0:ffff:680:dddf
6.128.221.224 0:0:0:0:0:ffff:680:dde0
6.128.221.225 0:0:0:0:0:ffff:680:dde1
6.128.221.226 0:0:0:0:0:ffff:680:dde2
6.128.221.227 0:0:0:0:0:ffff:680:dde3
6.128.221.228 0:0:0:0:0:ffff:680:dde4
6.128.221.229 0:0:0:0:0:ffff:680:dde5
6.128.221.230 0:0:0:0:0:ffff:680:dde6
6.128.221.231 0:0:0:0:0:ffff:680:dde7
6.128.221.232 0:0:0:0:0:ffff:680:dde8
6.128.221.233 0:0:0:0:0:ffff:680:dde9
6.128.221.234 0:0:0:0:0:ffff:680:ddea
6.128.221.235 0:0:0:0:0:ffff:680:ddeb
6.128.221.236 0:0:0:0:0:ffff:680:ddec
6.128.221.237 0:0:0:0:0:ffff:680:dded
6.128.221.238 0:0:0:0:0:ffff:680:ddee
6.128.221.239 0:0:0:0:0:ffff:680:ddef
6.128.221.240 0:0:0:0:0:ffff:680:ddf0
6.128.221.241 0:0:0:0:0:ffff:680:ddf1
6.128.221.242 0:0:0:0:0:ffff:680:ddf2
6.128.221.243 0:0:0:0:0:ffff:680:ddf3
6.128.221.244 0:0:0:0:0:ffff:680:ddf4
6.128.221.245 0:0:0:0:0:ffff:680:ddf5
6.128.221.246 0:0:0:0:0:ffff:680:ddf6
6.128.221.247 0:0:0:0:0:ffff:680:ddf7
6.128.221.248 0:0:0:0:0:ffff:680:ddf8
6.128.221.249 0:0:0:0:0:ffff:680:ddf9
6.128.221.250 0:0:0:0:0:ffff:680:ddfa
6.128.221.251 0:0:0:0:0:ffff:680:ddfb
6.128.221.252 0:0:0:0:0:ffff:680:ddfc
6.128.221.253 0:0:0:0:0:ffff:680:ddfd
6.128.221.254 0:0:0:0:0:ffff:680:ddfe
6.128.221.255 0:0:0:0:0:ffff:680: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.