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
65.121.221.1 0:0:0:0:0:ffff:4179:dd01
65.121.221.2 0:0:0:0:0:ffff:4179:dd02
65.121.221.3 0:0:0:0:0:ffff:4179:dd03
65.121.221.4 0:0:0:0:0:ffff:4179:dd04
65.121.221.5 0:0:0:0:0:ffff:4179:dd05
65.121.221.6 0:0:0:0:0:ffff:4179:dd06
65.121.221.7 0:0:0:0:0:ffff:4179:dd07
65.121.221.8 0:0:0:0:0:ffff:4179:dd08
65.121.221.9 0:0:0:0:0:ffff:4179:dd09
65.121.221.10 0:0:0:0:0:ffff:4179:dd0a
65.121.221.11 0:0:0:0:0:ffff:4179:dd0b
65.121.221.12 0:0:0:0:0:ffff:4179:dd0c
65.121.221.13 0:0:0:0:0:ffff:4179:dd0d
65.121.221.14 0:0:0:0:0:ffff:4179:dd0e
65.121.221.15 0:0:0:0:0:ffff:4179:dd0f
65.121.221.16 0:0:0:0:0:ffff:4179:dd10
65.121.221.17 0:0:0:0:0:ffff:4179:dd11
65.121.221.18 0:0:0:0:0:ffff:4179:dd12
65.121.221.19 0:0:0:0:0:ffff:4179:dd13
65.121.221.20 0:0:0:0:0:ffff:4179:dd14
65.121.221.21 0:0:0:0:0:ffff:4179:dd15
65.121.221.22 0:0:0:0:0:ffff:4179:dd16
65.121.221.23 0:0:0:0:0:ffff:4179:dd17
65.121.221.24 0:0:0:0:0:ffff:4179:dd18
65.121.221.25 0:0:0:0:0:ffff:4179:dd19
65.121.221.26 0:0:0:0:0:ffff:4179:dd1a
65.121.221.27 0:0:0:0:0:ffff:4179:dd1b
65.121.221.28 0:0:0:0:0:ffff:4179:dd1c
65.121.221.29 0:0:0:0:0:ffff:4179:dd1d
65.121.221.30 0:0:0:0:0:ffff:4179:dd1e
65.121.221.31 0:0:0:0:0:ffff:4179:dd1f
65.121.221.32 0:0:0:0:0:ffff:4179:dd20
65.121.221.33 0:0:0:0:0:ffff:4179:dd21
65.121.221.34 0:0:0:0:0:ffff:4179:dd22
65.121.221.35 0:0:0:0:0:ffff:4179:dd23
65.121.221.36 0:0:0:0:0:ffff:4179:dd24
65.121.221.37 0:0:0:0:0:ffff:4179:dd25
65.121.221.38 0:0:0:0:0:ffff:4179:dd26
65.121.221.39 0:0:0:0:0:ffff:4179:dd27
65.121.221.40 0:0:0:0:0:ffff:4179:dd28
65.121.221.41 0:0:0:0:0:ffff:4179:dd29
65.121.221.42 0:0:0:0:0:ffff:4179:dd2a
65.121.221.43 0:0:0:0:0:ffff:4179:dd2b
65.121.221.44 0:0:0:0:0:ffff:4179:dd2c
65.121.221.45 0:0:0:0:0:ffff:4179:dd2d
65.121.221.46 0:0:0:0:0:ffff:4179:dd2e
65.121.221.47 0:0:0:0:0:ffff:4179:dd2f
65.121.221.48 0:0:0:0:0:ffff:4179:dd30
65.121.221.49 0:0:0:0:0:ffff:4179:dd31
65.121.221.50 0:0:0:0:0:ffff:4179:dd32
65.121.221.51 0:0:0:0:0:ffff:4179:dd33
65.121.221.52 0:0:0:0:0:ffff:4179:dd34
65.121.221.53 0:0:0:0:0:ffff:4179:dd35
65.121.221.54 0:0:0:0:0:ffff:4179:dd36
65.121.221.55 0:0:0:0:0:ffff:4179:dd37
65.121.221.56 0:0:0:0:0:ffff:4179:dd38
65.121.221.57 0:0:0:0:0:ffff:4179:dd39
65.121.221.58 0:0:0:0:0:ffff:4179:dd3a
65.121.221.59 0:0:0:0:0:ffff:4179:dd3b
65.121.221.60 0:0:0:0:0:ffff:4179:dd3c


65.121.221.61 0:0:0:0:0:ffff:4179:dd3d
65.121.221.62 0:0:0:0:0:ffff:4179:dd3e
65.121.221.63 0:0:0:0:0:ffff:4179:dd3f
65.121.221.64 0:0:0:0:0:ffff:4179:dd40
65.121.221.65 0:0:0:0:0:ffff:4179:dd41
65.121.221.66 0:0:0:0:0:ffff:4179:dd42
65.121.221.67 0:0:0:0:0:ffff:4179:dd43
65.121.221.68 0:0:0:0:0:ffff:4179:dd44
65.121.221.69 0:0:0:0:0:ffff:4179:dd45
65.121.221.70 0:0:0:0:0:ffff:4179:dd46
65.121.221.71 0:0:0:0:0:ffff:4179:dd47
65.121.221.72 0:0:0:0:0:ffff:4179:dd48
65.121.221.73 0:0:0:0:0:ffff:4179:dd49
65.121.221.74 0:0:0:0:0:ffff:4179:dd4a
65.121.221.75 0:0:0:0:0:ffff:4179:dd4b
65.121.221.76 0:0:0:0:0:ffff:4179:dd4c
65.121.221.77 0:0:0:0:0:ffff:4179:dd4d
65.121.221.78 0:0:0:0:0:ffff:4179:dd4e
65.121.221.79 0:0:0:0:0:ffff:4179:dd4f
65.121.221.80 0:0:0:0:0:ffff:4179:dd50
65.121.221.81 0:0:0:0:0:ffff:4179:dd51
65.121.221.82 0:0:0:0:0:ffff:4179:dd52
65.121.221.83 0:0:0:0:0:ffff:4179:dd53
65.121.221.84 0:0:0:0:0:ffff:4179:dd54
65.121.221.85 0:0:0:0:0:ffff:4179:dd55
65.121.221.86 0:0:0:0:0:ffff:4179:dd56
65.121.221.87 0:0:0:0:0:ffff:4179:dd57
65.121.221.88 0:0:0:0:0:ffff:4179:dd58
65.121.221.89 0:0:0:0:0:ffff:4179:dd59
65.121.221.90 0:0:0:0:0:ffff:4179:dd5a
65.121.221.91 0:0:0:0:0:ffff:4179:dd5b
65.121.221.92 0:0:0:0:0:ffff:4179:dd5c
65.121.221.93 0:0:0:0:0:ffff:4179:dd5d
65.121.221.94 0:0:0:0:0:ffff:4179:dd5e
65.121.221.95 0:0:0:0:0:ffff:4179:dd5f
65.121.221.96 0:0:0:0:0:ffff:4179:dd60
65.121.221.97 0:0:0:0:0:ffff:4179:dd61
65.121.221.98 0:0:0:0:0:ffff:4179:dd62
65.121.221.99 0:0:0:0:0:ffff:4179:dd63
65.121.221.100 0:0:0:0:0:ffff:4179:dd64
65.121.221.101 0:0:0:0:0:ffff:4179:dd65
65.121.221.102 0:0:0:0:0:ffff:4179:dd66
65.121.221.103 0:0:0:0:0:ffff:4179:dd67
65.121.221.104 0:0:0:0:0:ffff:4179:dd68
65.121.221.105 0:0:0:0:0:ffff:4179:dd69
65.121.221.106 0:0:0:0:0:ffff:4179:dd6a
65.121.221.107 0:0:0:0:0:ffff:4179:dd6b
65.121.221.108 0:0:0:0:0:ffff:4179:dd6c
65.121.221.109 0:0:0:0:0:ffff:4179:dd6d
65.121.221.110 0:0:0:0:0:ffff:4179:dd6e
65.121.221.111 0:0:0:0:0:ffff:4179:dd6f
65.121.221.112 0:0:0:0:0:ffff:4179:dd70
65.121.221.113 0:0:0:0:0:ffff:4179:dd71
65.121.221.114 0:0:0:0:0:ffff:4179:dd72
65.121.221.115 0:0:0:0:0:ffff:4179:dd73
65.121.221.116 0:0:0:0:0:ffff:4179:dd74
65.121.221.117 0:0:0:0:0:ffff:4179:dd75
65.121.221.118 0:0:0:0:0:ffff:4179:dd76
65.121.221.119 0:0:0:0:0:ffff:4179:dd77
65.121.221.120 0:0:0:0:0:ffff:4179:dd78


65.121.221.121 0:0:0:0:0:ffff:4179:dd79
65.121.221.122 0:0:0:0:0:ffff:4179:dd7a
65.121.221.123 0:0:0:0:0:ffff:4179:dd7b
65.121.221.124 0:0:0:0:0:ffff:4179:dd7c
65.121.221.125 0:0:0:0:0:ffff:4179:dd7d
65.121.221.126 0:0:0:0:0:ffff:4179:dd7e
65.121.221.127 0:0:0:0:0:ffff:4179:dd7f
65.121.221.128 0:0:0:0:0:ffff:4179:dd80
65.121.221.129 0:0:0:0:0:ffff:4179:dd81
65.121.221.130 0:0:0:0:0:ffff:4179:dd82
65.121.221.131 0:0:0:0:0:ffff:4179:dd83
65.121.221.132 0:0:0:0:0:ffff:4179:dd84
65.121.221.133 0:0:0:0:0:ffff:4179:dd85
65.121.221.134 0:0:0:0:0:ffff:4179:dd86
65.121.221.135 0:0:0:0:0:ffff:4179:dd87
65.121.221.136 0:0:0:0:0:ffff:4179:dd88
65.121.221.137 0:0:0:0:0:ffff:4179:dd89
65.121.221.138 0:0:0:0:0:ffff:4179:dd8a
65.121.221.139 0:0:0:0:0:ffff:4179:dd8b
65.121.221.140 0:0:0:0:0:ffff:4179:dd8c
65.121.221.141 0:0:0:0:0:ffff:4179:dd8d
65.121.221.142 0:0:0:0:0:ffff:4179:dd8e
65.121.221.143 0:0:0:0:0:ffff:4179:dd8f
65.121.221.144 0:0:0:0:0:ffff:4179:dd90
65.121.221.145 0:0:0:0:0:ffff:4179:dd91
65.121.221.146 0:0:0:0:0:ffff:4179:dd92
65.121.221.147 0:0:0:0:0:ffff:4179:dd93
65.121.221.148 0:0:0:0:0:ffff:4179:dd94
65.121.221.149 0:0:0:0:0:ffff:4179:dd95
65.121.221.150 0:0:0:0:0:ffff:4179:dd96
65.121.221.151 0:0:0:0:0:ffff:4179:dd97
65.121.221.152 0:0:0:0:0:ffff:4179:dd98
65.121.221.153 0:0:0:0:0:ffff:4179:dd99
65.121.221.154 0:0:0:0:0:ffff:4179:dd9a
65.121.221.155 0:0:0:0:0:ffff:4179:dd9b
65.121.221.156 0:0:0:0:0:ffff:4179:dd9c
65.121.221.157 0:0:0:0:0:ffff:4179:dd9d
65.121.221.158 0:0:0:0:0:ffff:4179:dd9e
65.121.221.159 0:0:0:0:0:ffff:4179:dd9f
65.121.221.160 0:0:0:0:0:ffff:4179:dda0
65.121.221.161 0:0:0:0:0:ffff:4179:dda1
65.121.221.162 0:0:0:0:0:ffff:4179:dda2
65.121.221.163 0:0:0:0:0:ffff:4179:dda3
65.121.221.164 0:0:0:0:0:ffff:4179:dda4
65.121.221.165 0:0:0:0:0:ffff:4179:dda5
65.121.221.166 0:0:0:0:0:ffff:4179:dda6
65.121.221.167 0:0:0:0:0:ffff:4179:dda7
65.121.221.168 0:0:0:0:0:ffff:4179:dda8
65.121.221.169 0:0:0:0:0:ffff:4179:dda9
65.121.221.170 0:0:0:0:0:ffff:4179:ddaa
65.121.221.171 0:0:0:0:0:ffff:4179:ddab
65.121.221.172 0:0:0:0:0:ffff:4179:ddac
65.121.221.173 0:0:0:0:0:ffff:4179:ddad
65.121.221.174 0:0:0:0:0:ffff:4179:ddae
65.121.221.175 0:0:0:0:0:ffff:4179:ddaf
65.121.221.176 0:0:0:0:0:ffff:4179:ddb0
65.121.221.177 0:0:0:0:0:ffff:4179:ddb1
65.121.221.178 0:0:0:0:0:ffff:4179:ddb2
65.121.221.179 0:0:0:0:0:ffff:4179:ddb3
65.121.221.180 0:0:0:0:0:ffff:4179:ddb4


65.121.221.181 0:0:0:0:0:ffff:4179:ddb5
65.121.221.182 0:0:0:0:0:ffff:4179:ddb6
65.121.221.183 0:0:0:0:0:ffff:4179:ddb7
65.121.221.184 0:0:0:0:0:ffff:4179:ddb8
65.121.221.185 0:0:0:0:0:ffff:4179:ddb9
65.121.221.186 0:0:0:0:0:ffff:4179:ddba
65.121.221.187 0:0:0:0:0:ffff:4179:ddbb
65.121.221.188 0:0:0:0:0:ffff:4179:ddbc
65.121.221.189 0:0:0:0:0:ffff:4179:ddbd
65.121.221.190 0:0:0:0:0:ffff:4179:ddbe
65.121.221.191 0:0:0:0:0:ffff:4179:ddbf
65.121.221.192 0:0:0:0:0:ffff:4179:ddc0
65.121.221.193 0:0:0:0:0:ffff:4179:ddc1
65.121.221.194 0:0:0:0:0:ffff:4179:ddc2
65.121.221.195 0:0:0:0:0:ffff:4179:ddc3
65.121.221.196 0:0:0:0:0:ffff:4179:ddc4
65.121.221.197 0:0:0:0:0:ffff:4179:ddc5
65.121.221.198 0:0:0:0:0:ffff:4179:ddc6
65.121.221.199 0:0:0:0:0:ffff:4179:ddc7
65.121.221.200 0:0:0:0:0:ffff:4179:ddc8
65.121.221.201 0:0:0:0:0:ffff:4179:ddc9
65.121.221.202 0:0:0:0:0:ffff:4179:ddca
65.121.221.203 0:0:0:0:0:ffff:4179:ddcb
65.121.221.204 0:0:0:0:0:ffff:4179:ddcc
65.121.221.205 0:0:0:0:0:ffff:4179:ddcd
65.121.221.206 0:0:0:0:0:ffff:4179:ddce
65.121.221.207 0:0:0:0:0:ffff:4179:ddcf
65.121.221.208 0:0:0:0:0:ffff:4179:ddd0
65.121.221.209 0:0:0:0:0:ffff:4179:ddd1
65.121.221.210 0:0:0:0:0:ffff:4179:ddd2
65.121.221.211 0:0:0:0:0:ffff:4179:ddd3
65.121.221.212 0:0:0:0:0:ffff:4179:ddd4
65.121.221.213 0:0:0:0:0:ffff:4179:ddd5
65.121.221.214 0:0:0:0:0:ffff:4179:ddd6
65.121.221.215 0:0:0:0:0:ffff:4179:ddd7
65.121.221.216 0:0:0:0:0:ffff:4179:ddd8
65.121.221.217 0:0:0:0:0:ffff:4179:ddd9
65.121.221.218 0:0:0:0:0:ffff:4179:ddda
65.121.221.219 0:0:0:0:0:ffff:4179:dddb
65.121.221.220 0:0:0:0:0:ffff:4179:dddc
65.121.221.221 0:0:0:0:0:ffff:4179:dddd
65.121.221.222 0:0:0:0:0:ffff:4179:ddde
65.121.221.223 0:0:0:0:0:ffff:4179:dddf
65.121.221.224 0:0:0:0:0:ffff:4179:dde0
65.121.221.225 0:0:0:0:0:ffff:4179:dde1
65.121.221.226 0:0:0:0:0:ffff:4179:dde2
65.121.221.227 0:0:0:0:0:ffff:4179:dde3
65.121.221.228 0:0:0:0:0:ffff:4179:dde4
65.121.221.229 0:0:0:0:0:ffff:4179:dde5
65.121.221.230 0:0:0:0:0:ffff:4179:dde6
65.121.221.231 0:0:0:0:0:ffff:4179:dde7
65.121.221.232 0:0:0:0:0:ffff:4179:dde8
65.121.221.233 0:0:0:0:0:ffff:4179:dde9
65.121.221.234 0:0:0:0:0:ffff:4179:ddea
65.121.221.235 0:0:0:0:0:ffff:4179:ddeb
65.121.221.236 0:0:0:0:0:ffff:4179:ddec
65.121.221.237 0:0:0:0:0:ffff:4179:dded
65.121.221.238 0:0:0:0:0:ffff:4179:ddee
65.121.221.239 0:0:0:0:0:ffff:4179:ddef
65.121.221.240 0:0:0:0:0:ffff:4179:ddf0
65.121.221.241 0:0:0:0:0:ffff:4179:ddf1
65.121.221.242 0:0:0:0:0:ffff:4179:ddf2
65.121.221.243 0:0:0:0:0:ffff:4179:ddf3
65.121.221.244 0:0:0:0:0:ffff:4179:ddf4
65.121.221.245 0:0:0:0:0:ffff:4179:ddf5
65.121.221.246 0:0:0:0:0:ffff:4179:ddf6
65.121.221.247 0:0:0:0:0:ffff:4179:ddf7
65.121.221.248 0:0:0:0:0:ffff:4179:ddf8
65.121.221.249 0:0:0:0:0:ffff:4179:ddf9
65.121.221.250 0:0:0:0:0:ffff:4179:ddfa
65.121.221.251 0:0:0:0:0:ffff:4179:ddfb
65.121.221.252 0:0:0:0:0:ffff:4179:ddfc
65.121.221.253 0:0:0:0:0:ffff:4179:ddfd
65.121.221.254 0:0:0:0:0:ffff:4179:ddfe
65.121.221.255 0:0:0:0:0:ffff:4179: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.