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
20.71.128.1 0:0:0:0:0:ffff:1447:8001
20.71.128.2 0:0:0:0:0:ffff:1447:8002
20.71.128.3 0:0:0:0:0:ffff:1447:8003
20.71.128.4 0:0:0:0:0:ffff:1447:8004
20.71.128.5 0:0:0:0:0:ffff:1447:8005
20.71.128.6 0:0:0:0:0:ffff:1447:8006
20.71.128.7 0:0:0:0:0:ffff:1447:8007
20.71.128.8 0:0:0:0:0:ffff:1447:8008
20.71.128.9 0:0:0:0:0:ffff:1447:8009
20.71.128.10 0:0:0:0:0:ffff:1447:800a
20.71.128.11 0:0:0:0:0:ffff:1447:800b
20.71.128.12 0:0:0:0:0:ffff:1447:800c
20.71.128.13 0:0:0:0:0:ffff:1447:800d
20.71.128.14 0:0:0:0:0:ffff:1447:800e
20.71.128.15 0:0:0:0:0:ffff:1447:800f
20.71.128.16 0:0:0:0:0:ffff:1447:8010
20.71.128.17 0:0:0:0:0:ffff:1447:8011
20.71.128.18 0:0:0:0:0:ffff:1447:8012
20.71.128.19 0:0:0:0:0:ffff:1447:8013
20.71.128.20 0:0:0:0:0:ffff:1447:8014
20.71.128.21 0:0:0:0:0:ffff:1447:8015
20.71.128.22 0:0:0:0:0:ffff:1447:8016
20.71.128.23 0:0:0:0:0:ffff:1447:8017
20.71.128.24 0:0:0:0:0:ffff:1447:8018
20.71.128.25 0:0:0:0:0:ffff:1447:8019
20.71.128.26 0:0:0:0:0:ffff:1447:801a
20.71.128.27 0:0:0:0:0:ffff:1447:801b
20.71.128.28 0:0:0:0:0:ffff:1447:801c
20.71.128.29 0:0:0:0:0:ffff:1447:801d
20.71.128.30 0:0:0:0:0:ffff:1447:801e
20.71.128.31 0:0:0:0:0:ffff:1447:801f
20.71.128.32 0:0:0:0:0:ffff:1447:8020
20.71.128.33 0:0:0:0:0:ffff:1447:8021
20.71.128.34 0:0:0:0:0:ffff:1447:8022
20.71.128.35 0:0:0:0:0:ffff:1447:8023
20.71.128.36 0:0:0:0:0:ffff:1447:8024
20.71.128.37 0:0:0:0:0:ffff:1447:8025
20.71.128.38 0:0:0:0:0:ffff:1447:8026
20.71.128.39 0:0:0:0:0:ffff:1447:8027
20.71.128.40 0:0:0:0:0:ffff:1447:8028
20.71.128.41 0:0:0:0:0:ffff:1447:8029
20.71.128.42 0:0:0:0:0:ffff:1447:802a
20.71.128.43 0:0:0:0:0:ffff:1447:802b
20.71.128.44 0:0:0:0:0:ffff:1447:802c
20.71.128.45 0:0:0:0:0:ffff:1447:802d
20.71.128.46 0:0:0:0:0:ffff:1447:802e
20.71.128.47 0:0:0:0:0:ffff:1447:802f
20.71.128.48 0:0:0:0:0:ffff:1447:8030
20.71.128.49 0:0:0:0:0:ffff:1447:8031
20.71.128.50 0:0:0:0:0:ffff:1447:8032
20.71.128.51 0:0:0:0:0:ffff:1447:8033
20.71.128.52 0:0:0:0:0:ffff:1447:8034
20.71.128.53 0:0:0:0:0:ffff:1447:8035
20.71.128.54 0:0:0:0:0:ffff:1447:8036
20.71.128.55 0:0:0:0:0:ffff:1447:8037
20.71.128.56 0:0:0:0:0:ffff:1447:8038
20.71.128.57 0:0:0:0:0:ffff:1447:8039
20.71.128.58 0:0:0:0:0:ffff:1447:803a
20.71.128.59 0:0:0:0:0:ffff:1447:803b
20.71.128.60 0:0:0:0:0:ffff:1447:803c


20.71.128.61 0:0:0:0:0:ffff:1447:803d
20.71.128.62 0:0:0:0:0:ffff:1447:803e
20.71.128.63 0:0:0:0:0:ffff:1447:803f
20.71.128.64 0:0:0:0:0:ffff:1447:8040
20.71.128.65 0:0:0:0:0:ffff:1447:8041
20.71.128.66 0:0:0:0:0:ffff:1447:8042
20.71.128.67 0:0:0:0:0:ffff:1447:8043
20.71.128.68 0:0:0:0:0:ffff:1447:8044
20.71.128.69 0:0:0:0:0:ffff:1447:8045
20.71.128.70 0:0:0:0:0:ffff:1447:8046
20.71.128.71 0:0:0:0:0:ffff:1447:8047
20.71.128.72 0:0:0:0:0:ffff:1447:8048
20.71.128.73 0:0:0:0:0:ffff:1447:8049
20.71.128.74 0:0:0:0:0:ffff:1447:804a
20.71.128.75 0:0:0:0:0:ffff:1447:804b
20.71.128.76 0:0:0:0:0:ffff:1447:804c
20.71.128.77 0:0:0:0:0:ffff:1447:804d
20.71.128.78 0:0:0:0:0:ffff:1447:804e
20.71.128.79 0:0:0:0:0:ffff:1447:804f
20.71.128.80 0:0:0:0:0:ffff:1447:8050
20.71.128.81 0:0:0:0:0:ffff:1447:8051
20.71.128.82 0:0:0:0:0:ffff:1447:8052
20.71.128.83 0:0:0:0:0:ffff:1447:8053
20.71.128.84 0:0:0:0:0:ffff:1447:8054
20.71.128.85 0:0:0:0:0:ffff:1447:8055
20.71.128.86 0:0:0:0:0:ffff:1447:8056
20.71.128.87 0:0:0:0:0:ffff:1447:8057
20.71.128.88 0:0:0:0:0:ffff:1447:8058
20.71.128.89 0:0:0:0:0:ffff:1447:8059
20.71.128.90 0:0:0:0:0:ffff:1447:805a
20.71.128.91 0:0:0:0:0:ffff:1447:805b
20.71.128.92 0:0:0:0:0:ffff:1447:805c
20.71.128.93 0:0:0:0:0:ffff:1447:805d
20.71.128.94 0:0:0:0:0:ffff:1447:805e
20.71.128.95 0:0:0:0:0:ffff:1447:805f
20.71.128.96 0:0:0:0:0:ffff:1447:8060
20.71.128.97 0:0:0:0:0:ffff:1447:8061
20.71.128.98 0:0:0:0:0:ffff:1447:8062
20.71.128.99 0:0:0:0:0:ffff:1447:8063
20.71.128.100 0:0:0:0:0:ffff:1447:8064
20.71.128.101 0:0:0:0:0:ffff:1447:8065
20.71.128.102 0:0:0:0:0:ffff:1447:8066
20.71.128.103 0:0:0:0:0:ffff:1447:8067
20.71.128.104 0:0:0:0:0:ffff:1447:8068
20.71.128.105 0:0:0:0:0:ffff:1447:8069
20.71.128.106 0:0:0:0:0:ffff:1447:806a
20.71.128.107 0:0:0:0:0:ffff:1447:806b
20.71.128.108 0:0:0:0:0:ffff:1447:806c
20.71.128.109 0:0:0:0:0:ffff:1447:806d
20.71.128.110 0:0:0:0:0:ffff:1447:806e
20.71.128.111 0:0:0:0:0:ffff:1447:806f
20.71.128.112 0:0:0:0:0:ffff:1447:8070
20.71.128.113 0:0:0:0:0:ffff:1447:8071
20.71.128.114 0:0:0:0:0:ffff:1447:8072
20.71.128.115 0:0:0:0:0:ffff:1447:8073
20.71.128.116 0:0:0:0:0:ffff:1447:8074
20.71.128.117 0:0:0:0:0:ffff:1447:8075
20.71.128.118 0:0:0:0:0:ffff:1447:8076
20.71.128.119 0:0:0:0:0:ffff:1447:8077
20.71.128.120 0:0:0:0:0:ffff:1447:8078


20.71.128.121 0:0:0:0:0:ffff:1447:8079
20.71.128.122 0:0:0:0:0:ffff:1447:807a
20.71.128.123 0:0:0:0:0:ffff:1447:807b
20.71.128.124 0:0:0:0:0:ffff:1447:807c
20.71.128.125 0:0:0:0:0:ffff:1447:807d
20.71.128.126 0:0:0:0:0:ffff:1447:807e
20.71.128.127 0:0:0:0:0:ffff:1447:807f
20.71.128.128 0:0:0:0:0:ffff:1447:8080
20.71.128.129 0:0:0:0:0:ffff:1447:8081
20.71.128.130 0:0:0:0:0:ffff:1447:8082
20.71.128.131 0:0:0:0:0:ffff:1447:8083
20.71.128.132 0:0:0:0:0:ffff:1447:8084
20.71.128.133 0:0:0:0:0:ffff:1447:8085
20.71.128.134 0:0:0:0:0:ffff:1447:8086
20.71.128.135 0:0:0:0:0:ffff:1447:8087
20.71.128.136 0:0:0:0:0:ffff:1447:8088
20.71.128.137 0:0:0:0:0:ffff:1447:8089
20.71.128.138 0:0:0:0:0:ffff:1447:808a
20.71.128.139 0:0:0:0:0:ffff:1447:808b
20.71.128.140 0:0:0:0:0:ffff:1447:808c
20.71.128.141 0:0:0:0:0:ffff:1447:808d
20.71.128.142 0:0:0:0:0:ffff:1447:808e
20.71.128.143 0:0:0:0:0:ffff:1447:808f
20.71.128.144 0:0:0:0:0:ffff:1447:8090
20.71.128.145 0:0:0:0:0:ffff:1447:8091
20.71.128.146 0:0:0:0:0:ffff:1447:8092
20.71.128.147 0:0:0:0:0:ffff:1447:8093
20.71.128.148 0:0:0:0:0:ffff:1447:8094
20.71.128.149 0:0:0:0:0:ffff:1447:8095
20.71.128.150 0:0:0:0:0:ffff:1447:8096
20.71.128.151 0:0:0:0:0:ffff:1447:8097
20.71.128.152 0:0:0:0:0:ffff:1447:8098
20.71.128.153 0:0:0:0:0:ffff:1447:8099
20.71.128.154 0:0:0:0:0:ffff:1447:809a
20.71.128.155 0:0:0:0:0:ffff:1447:809b
20.71.128.156 0:0:0:0:0:ffff:1447:809c
20.71.128.157 0:0:0:0:0:ffff:1447:809d
20.71.128.158 0:0:0:0:0:ffff:1447:809e
20.71.128.159 0:0:0:0:0:ffff:1447:809f
20.71.128.160 0:0:0:0:0:ffff:1447:80a0
20.71.128.161 0:0:0:0:0:ffff:1447:80a1
20.71.128.162 0:0:0:0:0:ffff:1447:80a2
20.71.128.163 0:0:0:0:0:ffff:1447:80a3
20.71.128.164 0:0:0:0:0:ffff:1447:80a4
20.71.128.165 0:0:0:0:0:ffff:1447:80a5
20.71.128.166 0:0:0:0:0:ffff:1447:80a6
20.71.128.167 0:0:0:0:0:ffff:1447:80a7
20.71.128.168 0:0:0:0:0:ffff:1447:80a8
20.71.128.169 0:0:0:0:0:ffff:1447:80a9
20.71.128.170 0:0:0:0:0:ffff:1447:80aa
20.71.128.171 0:0:0:0:0:ffff:1447:80ab
20.71.128.172 0:0:0:0:0:ffff:1447:80ac
20.71.128.173 0:0:0:0:0:ffff:1447:80ad
20.71.128.174 0:0:0:0:0:ffff:1447:80ae
20.71.128.175 0:0:0:0:0:ffff:1447:80af
20.71.128.176 0:0:0:0:0:ffff:1447:80b0
20.71.128.177 0:0:0:0:0:ffff:1447:80b1
20.71.128.178 0:0:0:0:0:ffff:1447:80b2
20.71.128.179 0:0:0:0:0:ffff:1447:80b3
20.71.128.180 0:0:0:0:0:ffff:1447:80b4


20.71.128.181 0:0:0:0:0:ffff:1447:80b5
20.71.128.182 0:0:0:0:0:ffff:1447:80b6
20.71.128.183 0:0:0:0:0:ffff:1447:80b7
20.71.128.184 0:0:0:0:0:ffff:1447:80b8
20.71.128.185 0:0:0:0:0:ffff:1447:80b9
20.71.128.186 0:0:0:0:0:ffff:1447:80ba
20.71.128.187 0:0:0:0:0:ffff:1447:80bb
20.71.128.188 0:0:0:0:0:ffff:1447:80bc
20.71.128.189 0:0:0:0:0:ffff:1447:80bd
20.71.128.190 0:0:0:0:0:ffff:1447:80be
20.71.128.191 0:0:0:0:0:ffff:1447:80bf
20.71.128.192 0:0:0:0:0:ffff:1447:80c0
20.71.128.193 0:0:0:0:0:ffff:1447:80c1
20.71.128.194 0:0:0:0:0:ffff:1447:80c2
20.71.128.195 0:0:0:0:0:ffff:1447:80c3
20.71.128.196 0:0:0:0:0:ffff:1447:80c4
20.71.128.197 0:0:0:0:0:ffff:1447:80c5
20.71.128.198 0:0:0:0:0:ffff:1447:80c6
20.71.128.199 0:0:0:0:0:ffff:1447:80c7
20.71.128.200 0:0:0:0:0:ffff:1447:80c8
20.71.128.201 0:0:0:0:0:ffff:1447:80c9
20.71.128.202 0:0:0:0:0:ffff:1447:80ca
20.71.128.203 0:0:0:0:0:ffff:1447:80cb
20.71.128.204 0:0:0:0:0:ffff:1447:80cc
20.71.128.205 0:0:0:0:0:ffff:1447:80cd
20.71.128.206 0:0:0:0:0:ffff:1447:80ce
20.71.128.207 0:0:0:0:0:ffff:1447:80cf
20.71.128.208 0:0:0:0:0:ffff:1447:80d0
20.71.128.209 0:0:0:0:0:ffff:1447:80d1
20.71.128.210 0:0:0:0:0:ffff:1447:80d2
20.71.128.211 0:0:0:0:0:ffff:1447:80d3
20.71.128.212 0:0:0:0:0:ffff:1447:80d4
20.71.128.213 0:0:0:0:0:ffff:1447:80d5
20.71.128.214 0:0:0:0:0:ffff:1447:80d6
20.71.128.215 0:0:0:0:0:ffff:1447:80d7
20.71.128.216 0:0:0:0:0:ffff:1447:80d8
20.71.128.217 0:0:0:0:0:ffff:1447:80d9
20.71.128.218 0:0:0:0:0:ffff:1447:80da
20.71.128.219 0:0:0:0:0:ffff:1447:80db
20.71.128.220 0:0:0:0:0:ffff:1447:80dc
20.71.128.221 0:0:0:0:0:ffff:1447:80dd
20.71.128.222 0:0:0:0:0:ffff:1447:80de
20.71.128.223 0:0:0:0:0:ffff:1447:80df
20.71.128.224 0:0:0:0:0:ffff:1447:80e0
20.71.128.225 0:0:0:0:0:ffff:1447:80e1
20.71.128.226 0:0:0:0:0:ffff:1447:80e2
20.71.128.227 0:0:0:0:0:ffff:1447:80e3
20.71.128.228 0:0:0:0:0:ffff:1447:80e4
20.71.128.229 0:0:0:0:0:ffff:1447:80e5
20.71.128.230 0:0:0:0:0:ffff:1447:80e6
20.71.128.231 0:0:0:0:0:ffff:1447:80e7
20.71.128.232 0:0:0:0:0:ffff:1447:80e8
20.71.128.233 0:0:0:0:0:ffff:1447:80e9
20.71.128.234 0:0:0:0:0:ffff:1447:80ea
20.71.128.235 0:0:0:0:0:ffff:1447:80eb
20.71.128.236 0:0:0:0:0:ffff:1447:80ec
20.71.128.237 0:0:0:0:0:ffff:1447:80ed
20.71.128.238 0:0:0:0:0:ffff:1447:80ee
20.71.128.239 0:0:0:0:0:ffff:1447:80ef
20.71.128.240 0:0:0:0:0:ffff:1447:80f0
20.71.128.241 0:0:0:0:0:ffff:1447:80f1
20.71.128.242 0:0:0:0:0:ffff:1447:80f2
20.71.128.243 0:0:0:0:0:ffff:1447:80f3
20.71.128.244 0:0:0:0:0:ffff:1447:80f4
20.71.128.245 0:0:0:0:0:ffff:1447:80f5
20.71.128.246 0:0:0:0:0:ffff:1447:80f6
20.71.128.247 0:0:0:0:0:ffff:1447:80f7
20.71.128.248 0:0:0:0:0:ffff:1447:80f8
20.71.128.249 0:0:0:0:0:ffff:1447:80f9
20.71.128.250 0:0:0:0:0:ffff:1447:80fa
20.71.128.251 0:0:0:0:0:ffff:1447:80fb
20.71.128.252 0:0:0:0:0:ffff:1447:80fc
20.71.128.253 0:0:0:0:0:ffff:1447:80fd
20.71.128.254 0:0:0:0:0:ffff:1447:80fe
20.71.128.255 0:0:0:0:0:ffff:1447:80ff


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.