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
40.217.21.1 0:0:0:0:0:ffff:28d9:1501
40.217.21.2 0:0:0:0:0:ffff:28d9:1502
40.217.21.3 0:0:0:0:0:ffff:28d9:1503
40.217.21.4 0:0:0:0:0:ffff:28d9:1504
40.217.21.5 0:0:0:0:0:ffff:28d9:1505
40.217.21.6 0:0:0:0:0:ffff:28d9:1506
40.217.21.7 0:0:0:0:0:ffff:28d9:1507
40.217.21.8 0:0:0:0:0:ffff:28d9:1508
40.217.21.9 0:0:0:0:0:ffff:28d9:1509
40.217.21.10 0:0:0:0:0:ffff:28d9:150a
40.217.21.11 0:0:0:0:0:ffff:28d9:150b
40.217.21.12 0:0:0:0:0:ffff:28d9:150c
40.217.21.13 0:0:0:0:0:ffff:28d9:150d
40.217.21.14 0:0:0:0:0:ffff:28d9:150e
40.217.21.15 0:0:0:0:0:ffff:28d9:150f
40.217.21.16 0:0:0:0:0:ffff:28d9:1510
40.217.21.17 0:0:0:0:0:ffff:28d9:1511
40.217.21.18 0:0:0:0:0:ffff:28d9:1512
40.217.21.19 0:0:0:0:0:ffff:28d9:1513
40.217.21.20 0:0:0:0:0:ffff:28d9:1514
40.217.21.21 0:0:0:0:0:ffff:28d9:1515
40.217.21.22 0:0:0:0:0:ffff:28d9:1516
40.217.21.23 0:0:0:0:0:ffff:28d9:1517
40.217.21.24 0:0:0:0:0:ffff:28d9:1518
40.217.21.25 0:0:0:0:0:ffff:28d9:1519
40.217.21.26 0:0:0:0:0:ffff:28d9:151a
40.217.21.27 0:0:0:0:0:ffff:28d9:151b
40.217.21.28 0:0:0:0:0:ffff:28d9:151c
40.217.21.29 0:0:0:0:0:ffff:28d9:151d
40.217.21.30 0:0:0:0:0:ffff:28d9:151e
40.217.21.31 0:0:0:0:0:ffff:28d9:151f
40.217.21.32 0:0:0:0:0:ffff:28d9:1520
40.217.21.33 0:0:0:0:0:ffff:28d9:1521
40.217.21.34 0:0:0:0:0:ffff:28d9:1522
40.217.21.35 0:0:0:0:0:ffff:28d9:1523
40.217.21.36 0:0:0:0:0:ffff:28d9:1524
40.217.21.37 0:0:0:0:0:ffff:28d9:1525
40.217.21.38 0:0:0:0:0:ffff:28d9:1526
40.217.21.39 0:0:0:0:0:ffff:28d9:1527
40.217.21.40 0:0:0:0:0:ffff:28d9:1528
40.217.21.41 0:0:0:0:0:ffff:28d9:1529
40.217.21.42 0:0:0:0:0:ffff:28d9:152a
40.217.21.43 0:0:0:0:0:ffff:28d9:152b
40.217.21.44 0:0:0:0:0:ffff:28d9:152c
40.217.21.45 0:0:0:0:0:ffff:28d9:152d
40.217.21.46 0:0:0:0:0:ffff:28d9:152e
40.217.21.47 0:0:0:0:0:ffff:28d9:152f
40.217.21.48 0:0:0:0:0:ffff:28d9:1530
40.217.21.49 0:0:0:0:0:ffff:28d9:1531
40.217.21.50 0:0:0:0:0:ffff:28d9:1532
40.217.21.51 0:0:0:0:0:ffff:28d9:1533
40.217.21.52 0:0:0:0:0:ffff:28d9:1534
40.217.21.53 0:0:0:0:0:ffff:28d9:1535
40.217.21.54 0:0:0:0:0:ffff:28d9:1536
40.217.21.55 0:0:0:0:0:ffff:28d9:1537
40.217.21.56 0:0:0:0:0:ffff:28d9:1538
40.217.21.57 0:0:0:0:0:ffff:28d9:1539
40.217.21.58 0:0:0:0:0:ffff:28d9:153a
40.217.21.59 0:0:0:0:0:ffff:28d9:153b
40.217.21.60 0:0:0:0:0:ffff:28d9:153c


40.217.21.61 0:0:0:0:0:ffff:28d9:153d
40.217.21.62 0:0:0:0:0:ffff:28d9:153e
40.217.21.63 0:0:0:0:0:ffff:28d9:153f
40.217.21.64 0:0:0:0:0:ffff:28d9:1540
40.217.21.65 0:0:0:0:0:ffff:28d9:1541
40.217.21.66 0:0:0:0:0:ffff:28d9:1542
40.217.21.67 0:0:0:0:0:ffff:28d9:1543
40.217.21.68 0:0:0:0:0:ffff:28d9:1544
40.217.21.69 0:0:0:0:0:ffff:28d9:1545
40.217.21.70 0:0:0:0:0:ffff:28d9:1546
40.217.21.71 0:0:0:0:0:ffff:28d9:1547
40.217.21.72 0:0:0:0:0:ffff:28d9:1548
40.217.21.73 0:0:0:0:0:ffff:28d9:1549
40.217.21.74 0:0:0:0:0:ffff:28d9:154a
40.217.21.75 0:0:0:0:0:ffff:28d9:154b
40.217.21.76 0:0:0:0:0:ffff:28d9:154c
40.217.21.77 0:0:0:0:0:ffff:28d9:154d
40.217.21.78 0:0:0:0:0:ffff:28d9:154e
40.217.21.79 0:0:0:0:0:ffff:28d9:154f
40.217.21.80 0:0:0:0:0:ffff:28d9:1550
40.217.21.81 0:0:0:0:0:ffff:28d9:1551
40.217.21.82 0:0:0:0:0:ffff:28d9:1552
40.217.21.83 0:0:0:0:0:ffff:28d9:1553
40.217.21.84 0:0:0:0:0:ffff:28d9:1554
40.217.21.85 0:0:0:0:0:ffff:28d9:1555
40.217.21.86 0:0:0:0:0:ffff:28d9:1556
40.217.21.87 0:0:0:0:0:ffff:28d9:1557
40.217.21.88 0:0:0:0:0:ffff:28d9:1558
40.217.21.89 0:0:0:0:0:ffff:28d9:1559
40.217.21.90 0:0:0:0:0:ffff:28d9:155a
40.217.21.91 0:0:0:0:0:ffff:28d9:155b
40.217.21.92 0:0:0:0:0:ffff:28d9:155c
40.217.21.93 0:0:0:0:0:ffff:28d9:155d
40.217.21.94 0:0:0:0:0:ffff:28d9:155e
40.217.21.95 0:0:0:0:0:ffff:28d9:155f
40.217.21.96 0:0:0:0:0:ffff:28d9:1560
40.217.21.97 0:0:0:0:0:ffff:28d9:1561
40.217.21.98 0:0:0:0:0:ffff:28d9:1562
40.217.21.99 0:0:0:0:0:ffff:28d9:1563
40.217.21.100 0:0:0:0:0:ffff:28d9:1564
40.217.21.101 0:0:0:0:0:ffff:28d9:1565
40.217.21.102 0:0:0:0:0:ffff:28d9:1566
40.217.21.103 0:0:0:0:0:ffff:28d9:1567
40.217.21.104 0:0:0:0:0:ffff:28d9:1568
40.217.21.105 0:0:0:0:0:ffff:28d9:1569
40.217.21.106 0:0:0:0:0:ffff:28d9:156a
40.217.21.107 0:0:0:0:0:ffff:28d9:156b
40.217.21.108 0:0:0:0:0:ffff:28d9:156c
40.217.21.109 0:0:0:0:0:ffff:28d9:156d
40.217.21.110 0:0:0:0:0:ffff:28d9:156e
40.217.21.111 0:0:0:0:0:ffff:28d9:156f
40.217.21.112 0:0:0:0:0:ffff:28d9:1570
40.217.21.113 0:0:0:0:0:ffff:28d9:1571
40.217.21.114 0:0:0:0:0:ffff:28d9:1572
40.217.21.115 0:0:0:0:0:ffff:28d9:1573
40.217.21.116 0:0:0:0:0:ffff:28d9:1574
40.217.21.117 0:0:0:0:0:ffff:28d9:1575
40.217.21.118 0:0:0:0:0:ffff:28d9:1576
40.217.21.119 0:0:0:0:0:ffff:28d9:1577
40.217.21.120 0:0:0:0:0:ffff:28d9:1578


40.217.21.121 0:0:0:0:0:ffff:28d9:1579
40.217.21.122 0:0:0:0:0:ffff:28d9:157a
40.217.21.123 0:0:0:0:0:ffff:28d9:157b
40.217.21.124 0:0:0:0:0:ffff:28d9:157c
40.217.21.125 0:0:0:0:0:ffff:28d9:157d
40.217.21.126 0:0:0:0:0:ffff:28d9:157e
40.217.21.127 0:0:0:0:0:ffff:28d9:157f
40.217.21.128 0:0:0:0:0:ffff:28d9:1580
40.217.21.129 0:0:0:0:0:ffff:28d9:1581
40.217.21.130 0:0:0:0:0:ffff:28d9:1582
40.217.21.131 0:0:0:0:0:ffff:28d9:1583
40.217.21.132 0:0:0:0:0:ffff:28d9:1584
40.217.21.133 0:0:0:0:0:ffff:28d9:1585
40.217.21.134 0:0:0:0:0:ffff:28d9:1586
40.217.21.135 0:0:0:0:0:ffff:28d9:1587
40.217.21.136 0:0:0:0:0:ffff:28d9:1588
40.217.21.137 0:0:0:0:0:ffff:28d9:1589
40.217.21.138 0:0:0:0:0:ffff:28d9:158a
40.217.21.139 0:0:0:0:0:ffff:28d9:158b
40.217.21.140 0:0:0:0:0:ffff:28d9:158c
40.217.21.141 0:0:0:0:0:ffff:28d9:158d
40.217.21.142 0:0:0:0:0:ffff:28d9:158e
40.217.21.143 0:0:0:0:0:ffff:28d9:158f
40.217.21.144 0:0:0:0:0:ffff:28d9:1590
40.217.21.145 0:0:0:0:0:ffff:28d9:1591
40.217.21.146 0:0:0:0:0:ffff:28d9:1592
40.217.21.147 0:0:0:0:0:ffff:28d9:1593
40.217.21.148 0:0:0:0:0:ffff:28d9:1594
40.217.21.149 0:0:0:0:0:ffff:28d9:1595
40.217.21.150 0:0:0:0:0:ffff:28d9:1596
40.217.21.151 0:0:0:0:0:ffff:28d9:1597
40.217.21.152 0:0:0:0:0:ffff:28d9:1598
40.217.21.153 0:0:0:0:0:ffff:28d9:1599
40.217.21.154 0:0:0:0:0:ffff:28d9:159a
40.217.21.155 0:0:0:0:0:ffff:28d9:159b
40.217.21.156 0:0:0:0:0:ffff:28d9:159c
40.217.21.157 0:0:0:0:0:ffff:28d9:159d
40.217.21.158 0:0:0:0:0:ffff:28d9:159e
40.217.21.159 0:0:0:0:0:ffff:28d9:159f
40.217.21.160 0:0:0:0:0:ffff:28d9:15a0
40.217.21.161 0:0:0:0:0:ffff:28d9:15a1
40.217.21.162 0:0:0:0:0:ffff:28d9:15a2
40.217.21.163 0:0:0:0:0:ffff:28d9:15a3
40.217.21.164 0:0:0:0:0:ffff:28d9:15a4
40.217.21.165 0:0:0:0:0:ffff:28d9:15a5
40.217.21.166 0:0:0:0:0:ffff:28d9:15a6
40.217.21.167 0:0:0:0:0:ffff:28d9:15a7
40.217.21.168 0:0:0:0:0:ffff:28d9:15a8
40.217.21.169 0:0:0:0:0:ffff:28d9:15a9
40.217.21.170 0:0:0:0:0:ffff:28d9:15aa
40.217.21.171 0:0:0:0:0:ffff:28d9:15ab
40.217.21.172 0:0:0:0:0:ffff:28d9:15ac
40.217.21.173 0:0:0:0:0:ffff:28d9:15ad
40.217.21.174 0:0:0:0:0:ffff:28d9:15ae
40.217.21.175 0:0:0:0:0:ffff:28d9:15af
40.217.21.176 0:0:0:0:0:ffff:28d9:15b0
40.217.21.177 0:0:0:0:0:ffff:28d9:15b1
40.217.21.178 0:0:0:0:0:ffff:28d9:15b2
40.217.21.179 0:0:0:0:0:ffff:28d9:15b3
40.217.21.180 0:0:0:0:0:ffff:28d9:15b4


40.217.21.181 0:0:0:0:0:ffff:28d9:15b5
40.217.21.182 0:0:0:0:0:ffff:28d9:15b6
40.217.21.183 0:0:0:0:0:ffff:28d9:15b7
40.217.21.184 0:0:0:0:0:ffff:28d9:15b8
40.217.21.185 0:0:0:0:0:ffff:28d9:15b9
40.217.21.186 0:0:0:0:0:ffff:28d9:15ba
40.217.21.187 0:0:0:0:0:ffff:28d9:15bb
40.217.21.188 0:0:0:0:0:ffff:28d9:15bc
40.217.21.189 0:0:0:0:0:ffff:28d9:15bd
40.217.21.190 0:0:0:0:0:ffff:28d9:15be
40.217.21.191 0:0:0:0:0:ffff:28d9:15bf
40.217.21.192 0:0:0:0:0:ffff:28d9:15c0
40.217.21.193 0:0:0:0:0:ffff:28d9:15c1
40.217.21.194 0:0:0:0:0:ffff:28d9:15c2
40.217.21.195 0:0:0:0:0:ffff:28d9:15c3
40.217.21.196 0:0:0:0:0:ffff:28d9:15c4
40.217.21.197 0:0:0:0:0:ffff:28d9:15c5
40.217.21.198 0:0:0:0:0:ffff:28d9:15c6
40.217.21.199 0:0:0:0:0:ffff:28d9:15c7
40.217.21.200 0:0:0:0:0:ffff:28d9:15c8
40.217.21.201 0:0:0:0:0:ffff:28d9:15c9
40.217.21.202 0:0:0:0:0:ffff:28d9:15ca
40.217.21.203 0:0:0:0:0:ffff:28d9:15cb
40.217.21.204 0:0:0:0:0:ffff:28d9:15cc
40.217.21.205 0:0:0:0:0:ffff:28d9:15cd
40.217.21.206 0:0:0:0:0:ffff:28d9:15ce
40.217.21.207 0:0:0:0:0:ffff:28d9:15cf
40.217.21.208 0:0:0:0:0:ffff:28d9:15d0
40.217.21.209 0:0:0:0:0:ffff:28d9:15d1
40.217.21.210 0:0:0:0:0:ffff:28d9:15d2
40.217.21.211 0:0:0:0:0:ffff:28d9:15d3
40.217.21.212 0:0:0:0:0:ffff:28d9:15d4
40.217.21.213 0:0:0:0:0:ffff:28d9:15d5
40.217.21.214 0:0:0:0:0:ffff:28d9:15d6
40.217.21.215 0:0:0:0:0:ffff:28d9:15d7
40.217.21.216 0:0:0:0:0:ffff:28d9:15d8
40.217.21.217 0:0:0:0:0:ffff:28d9:15d9
40.217.21.218 0:0:0:0:0:ffff:28d9:15da
40.217.21.219 0:0:0:0:0:ffff:28d9:15db
40.217.21.220 0:0:0:0:0:ffff:28d9:15dc
40.217.21.221 0:0:0:0:0:ffff:28d9:15dd
40.217.21.222 0:0:0:0:0:ffff:28d9:15de
40.217.21.223 0:0:0:0:0:ffff:28d9:15df
40.217.21.224 0:0:0:0:0:ffff:28d9:15e0
40.217.21.225 0:0:0:0:0:ffff:28d9:15e1
40.217.21.226 0:0:0:0:0:ffff:28d9:15e2
40.217.21.227 0:0:0:0:0:ffff:28d9:15e3
40.217.21.228 0:0:0:0:0:ffff:28d9:15e4
40.217.21.229 0:0:0:0:0:ffff:28d9:15e5
40.217.21.230 0:0:0:0:0:ffff:28d9:15e6
40.217.21.231 0:0:0:0:0:ffff:28d9:15e7
40.217.21.232 0:0:0:0:0:ffff:28d9:15e8
40.217.21.233 0:0:0:0:0:ffff:28d9:15e9
40.217.21.234 0:0:0:0:0:ffff:28d9:15ea
40.217.21.235 0:0:0:0:0:ffff:28d9:15eb
40.217.21.236 0:0:0:0:0:ffff:28d9:15ec
40.217.21.237 0:0:0:0:0:ffff:28d9:15ed
40.217.21.238 0:0:0:0:0:ffff:28d9:15ee
40.217.21.239 0:0:0:0:0:ffff:28d9:15ef
40.217.21.240 0:0:0:0:0:ffff:28d9:15f0
40.217.21.241 0:0:0:0:0:ffff:28d9:15f1
40.217.21.242 0:0:0:0:0:ffff:28d9:15f2
40.217.21.243 0:0:0:0:0:ffff:28d9:15f3
40.217.21.244 0:0:0:0:0:ffff:28d9:15f4
40.217.21.245 0:0:0:0:0:ffff:28d9:15f5
40.217.21.246 0:0:0:0:0:ffff:28d9:15f6
40.217.21.247 0:0:0:0:0:ffff:28d9:15f7
40.217.21.248 0:0:0:0:0:ffff:28d9:15f8
40.217.21.249 0:0:0:0:0:ffff:28d9:15f9
40.217.21.250 0:0:0:0:0:ffff:28d9:15fa
40.217.21.251 0:0:0:0:0:ffff:28d9:15fb
40.217.21.252 0:0:0:0:0:ffff:28d9:15fc
40.217.21.253 0:0:0:0:0:ffff:28d9:15fd
40.217.21.254 0:0:0:0:0:ffff:28d9:15fe
40.217.21.255 0:0:0:0:0:ffff:28d9:15ff


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.