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
72.39.21.1 0:0:0:0:0:ffff:4827:1501
72.39.21.2 0:0:0:0:0:ffff:4827:1502
72.39.21.3 0:0:0:0:0:ffff:4827:1503
72.39.21.4 0:0:0:0:0:ffff:4827:1504
72.39.21.5 0:0:0:0:0:ffff:4827:1505
72.39.21.6 0:0:0:0:0:ffff:4827:1506
72.39.21.7 0:0:0:0:0:ffff:4827:1507
72.39.21.8 0:0:0:0:0:ffff:4827:1508
72.39.21.9 0:0:0:0:0:ffff:4827:1509
72.39.21.10 0:0:0:0:0:ffff:4827:150a
72.39.21.11 0:0:0:0:0:ffff:4827:150b
72.39.21.12 0:0:0:0:0:ffff:4827:150c
72.39.21.13 0:0:0:0:0:ffff:4827:150d
72.39.21.14 0:0:0:0:0:ffff:4827:150e
72.39.21.15 0:0:0:0:0:ffff:4827:150f
72.39.21.16 0:0:0:0:0:ffff:4827:1510
72.39.21.17 0:0:0:0:0:ffff:4827:1511
72.39.21.18 0:0:0:0:0:ffff:4827:1512
72.39.21.19 0:0:0:0:0:ffff:4827:1513
72.39.21.20 0:0:0:0:0:ffff:4827:1514
72.39.21.21 0:0:0:0:0:ffff:4827:1515
72.39.21.22 0:0:0:0:0:ffff:4827:1516
72.39.21.23 0:0:0:0:0:ffff:4827:1517
72.39.21.24 0:0:0:0:0:ffff:4827:1518
72.39.21.25 0:0:0:0:0:ffff:4827:1519
72.39.21.26 0:0:0:0:0:ffff:4827:151a
72.39.21.27 0:0:0:0:0:ffff:4827:151b
72.39.21.28 0:0:0:0:0:ffff:4827:151c
72.39.21.29 0:0:0:0:0:ffff:4827:151d
72.39.21.30 0:0:0:0:0:ffff:4827:151e
72.39.21.31 0:0:0:0:0:ffff:4827:151f
72.39.21.32 0:0:0:0:0:ffff:4827:1520
72.39.21.33 0:0:0:0:0:ffff:4827:1521
72.39.21.34 0:0:0:0:0:ffff:4827:1522
72.39.21.35 0:0:0:0:0:ffff:4827:1523
72.39.21.36 0:0:0:0:0:ffff:4827:1524
72.39.21.37 0:0:0:0:0:ffff:4827:1525
72.39.21.38 0:0:0:0:0:ffff:4827:1526
72.39.21.39 0:0:0:0:0:ffff:4827:1527
72.39.21.40 0:0:0:0:0:ffff:4827:1528
72.39.21.41 0:0:0:0:0:ffff:4827:1529
72.39.21.42 0:0:0:0:0:ffff:4827:152a
72.39.21.43 0:0:0:0:0:ffff:4827:152b
72.39.21.44 0:0:0:0:0:ffff:4827:152c
72.39.21.45 0:0:0:0:0:ffff:4827:152d
72.39.21.46 0:0:0:0:0:ffff:4827:152e
72.39.21.47 0:0:0:0:0:ffff:4827:152f
72.39.21.48 0:0:0:0:0:ffff:4827:1530
72.39.21.49 0:0:0:0:0:ffff:4827:1531
72.39.21.50 0:0:0:0:0:ffff:4827:1532
72.39.21.51 0:0:0:0:0:ffff:4827:1533
72.39.21.52 0:0:0:0:0:ffff:4827:1534
72.39.21.53 0:0:0:0:0:ffff:4827:1535
72.39.21.54 0:0:0:0:0:ffff:4827:1536
72.39.21.55 0:0:0:0:0:ffff:4827:1537
72.39.21.56 0:0:0:0:0:ffff:4827:1538
72.39.21.57 0:0:0:0:0:ffff:4827:1539
72.39.21.58 0:0:0:0:0:ffff:4827:153a
72.39.21.59 0:0:0:0:0:ffff:4827:153b
72.39.21.60 0:0:0:0:0:ffff:4827:153c


72.39.21.61 0:0:0:0:0:ffff:4827:153d
72.39.21.62 0:0:0:0:0:ffff:4827:153e
72.39.21.63 0:0:0:0:0:ffff:4827:153f
72.39.21.64 0:0:0:0:0:ffff:4827:1540
72.39.21.65 0:0:0:0:0:ffff:4827:1541
72.39.21.66 0:0:0:0:0:ffff:4827:1542
72.39.21.67 0:0:0:0:0:ffff:4827:1543
72.39.21.68 0:0:0:0:0:ffff:4827:1544
72.39.21.69 0:0:0:0:0:ffff:4827:1545
72.39.21.70 0:0:0:0:0:ffff:4827:1546
72.39.21.71 0:0:0:0:0:ffff:4827:1547
72.39.21.72 0:0:0:0:0:ffff:4827:1548
72.39.21.73 0:0:0:0:0:ffff:4827:1549
72.39.21.74 0:0:0:0:0:ffff:4827:154a
72.39.21.75 0:0:0:0:0:ffff:4827:154b
72.39.21.76 0:0:0:0:0:ffff:4827:154c
72.39.21.77 0:0:0:0:0:ffff:4827:154d
72.39.21.78 0:0:0:0:0:ffff:4827:154e
72.39.21.79 0:0:0:0:0:ffff:4827:154f
72.39.21.80 0:0:0:0:0:ffff:4827:1550
72.39.21.81 0:0:0:0:0:ffff:4827:1551
72.39.21.82 0:0:0:0:0:ffff:4827:1552
72.39.21.83 0:0:0:0:0:ffff:4827:1553
72.39.21.84 0:0:0:0:0:ffff:4827:1554
72.39.21.85 0:0:0:0:0:ffff:4827:1555
72.39.21.86 0:0:0:0:0:ffff:4827:1556
72.39.21.87 0:0:0:0:0:ffff:4827:1557
72.39.21.88 0:0:0:0:0:ffff:4827:1558
72.39.21.89 0:0:0:0:0:ffff:4827:1559
72.39.21.90 0:0:0:0:0:ffff:4827:155a
72.39.21.91 0:0:0:0:0:ffff:4827:155b
72.39.21.92 0:0:0:0:0:ffff:4827:155c
72.39.21.93 0:0:0:0:0:ffff:4827:155d
72.39.21.94 0:0:0:0:0:ffff:4827:155e
72.39.21.95 0:0:0:0:0:ffff:4827:155f
72.39.21.96 0:0:0:0:0:ffff:4827:1560
72.39.21.97 0:0:0:0:0:ffff:4827:1561
72.39.21.98 0:0:0:0:0:ffff:4827:1562
72.39.21.99 0:0:0:0:0:ffff:4827:1563
72.39.21.100 0:0:0:0:0:ffff:4827:1564
72.39.21.101 0:0:0:0:0:ffff:4827:1565
72.39.21.102 0:0:0:0:0:ffff:4827:1566
72.39.21.103 0:0:0:0:0:ffff:4827:1567
72.39.21.104 0:0:0:0:0:ffff:4827:1568
72.39.21.105 0:0:0:0:0:ffff:4827:1569
72.39.21.106 0:0:0:0:0:ffff:4827:156a
72.39.21.107 0:0:0:0:0:ffff:4827:156b
72.39.21.108 0:0:0:0:0:ffff:4827:156c
72.39.21.109 0:0:0:0:0:ffff:4827:156d
72.39.21.110 0:0:0:0:0:ffff:4827:156e
72.39.21.111 0:0:0:0:0:ffff:4827:156f
72.39.21.112 0:0:0:0:0:ffff:4827:1570
72.39.21.113 0:0:0:0:0:ffff:4827:1571
72.39.21.114 0:0:0:0:0:ffff:4827:1572
72.39.21.115 0:0:0:0:0:ffff:4827:1573
72.39.21.116 0:0:0:0:0:ffff:4827:1574
72.39.21.117 0:0:0:0:0:ffff:4827:1575
72.39.21.118 0:0:0:0:0:ffff:4827:1576
72.39.21.119 0:0:0:0:0:ffff:4827:1577
72.39.21.120 0:0:0:0:0:ffff:4827:1578


72.39.21.121 0:0:0:0:0:ffff:4827:1579
72.39.21.122 0:0:0:0:0:ffff:4827:157a
72.39.21.123 0:0:0:0:0:ffff:4827:157b
72.39.21.124 0:0:0:0:0:ffff:4827:157c
72.39.21.125 0:0:0:0:0:ffff:4827:157d
72.39.21.126 0:0:0:0:0:ffff:4827:157e
72.39.21.127 0:0:0:0:0:ffff:4827:157f
72.39.21.128 0:0:0:0:0:ffff:4827:1580
72.39.21.129 0:0:0:0:0:ffff:4827:1581
72.39.21.130 0:0:0:0:0:ffff:4827:1582
72.39.21.131 0:0:0:0:0:ffff:4827:1583
72.39.21.132 0:0:0:0:0:ffff:4827:1584
72.39.21.133 0:0:0:0:0:ffff:4827:1585
72.39.21.134 0:0:0:0:0:ffff:4827:1586
72.39.21.135 0:0:0:0:0:ffff:4827:1587
72.39.21.136 0:0:0:0:0:ffff:4827:1588
72.39.21.137 0:0:0:0:0:ffff:4827:1589
72.39.21.138 0:0:0:0:0:ffff:4827:158a
72.39.21.139 0:0:0:0:0:ffff:4827:158b
72.39.21.140 0:0:0:0:0:ffff:4827:158c
72.39.21.141 0:0:0:0:0:ffff:4827:158d
72.39.21.142 0:0:0:0:0:ffff:4827:158e
72.39.21.143 0:0:0:0:0:ffff:4827:158f
72.39.21.144 0:0:0:0:0:ffff:4827:1590
72.39.21.145 0:0:0:0:0:ffff:4827:1591
72.39.21.146 0:0:0:0:0:ffff:4827:1592
72.39.21.147 0:0:0:0:0:ffff:4827:1593
72.39.21.148 0:0:0:0:0:ffff:4827:1594
72.39.21.149 0:0:0:0:0:ffff:4827:1595
72.39.21.150 0:0:0:0:0:ffff:4827:1596
72.39.21.151 0:0:0:0:0:ffff:4827:1597
72.39.21.152 0:0:0:0:0:ffff:4827:1598
72.39.21.153 0:0:0:0:0:ffff:4827:1599
72.39.21.154 0:0:0:0:0:ffff:4827:159a
72.39.21.155 0:0:0:0:0:ffff:4827:159b
72.39.21.156 0:0:0:0:0:ffff:4827:159c
72.39.21.157 0:0:0:0:0:ffff:4827:159d
72.39.21.158 0:0:0:0:0:ffff:4827:159e
72.39.21.159 0:0:0:0:0:ffff:4827:159f
72.39.21.160 0:0:0:0:0:ffff:4827:15a0
72.39.21.161 0:0:0:0:0:ffff:4827:15a1
72.39.21.162 0:0:0:0:0:ffff:4827:15a2
72.39.21.163 0:0:0:0:0:ffff:4827:15a3
72.39.21.164 0:0:0:0:0:ffff:4827:15a4
72.39.21.165 0:0:0:0:0:ffff:4827:15a5
72.39.21.166 0:0:0:0:0:ffff:4827:15a6
72.39.21.167 0:0:0:0:0:ffff:4827:15a7
72.39.21.168 0:0:0:0:0:ffff:4827:15a8
72.39.21.169 0:0:0:0:0:ffff:4827:15a9
72.39.21.170 0:0:0:0:0:ffff:4827:15aa
72.39.21.171 0:0:0:0:0:ffff:4827:15ab
72.39.21.172 0:0:0:0:0:ffff:4827:15ac
72.39.21.173 0:0:0:0:0:ffff:4827:15ad
72.39.21.174 0:0:0:0:0:ffff:4827:15ae
72.39.21.175 0:0:0:0:0:ffff:4827:15af
72.39.21.176 0:0:0:0:0:ffff:4827:15b0
72.39.21.177 0:0:0:0:0:ffff:4827:15b1
72.39.21.178 0:0:0:0:0:ffff:4827:15b2
72.39.21.179 0:0:0:0:0:ffff:4827:15b3
72.39.21.180 0:0:0:0:0:ffff:4827:15b4


72.39.21.181 0:0:0:0:0:ffff:4827:15b5
72.39.21.182 0:0:0:0:0:ffff:4827:15b6
72.39.21.183 0:0:0:0:0:ffff:4827:15b7
72.39.21.184 0:0:0:0:0:ffff:4827:15b8
72.39.21.185 0:0:0:0:0:ffff:4827:15b9
72.39.21.186 0:0:0:0:0:ffff:4827:15ba
72.39.21.187 0:0:0:0:0:ffff:4827:15bb
72.39.21.188 0:0:0:0:0:ffff:4827:15bc
72.39.21.189 0:0:0:0:0:ffff:4827:15bd
72.39.21.190 0:0:0:0:0:ffff:4827:15be
72.39.21.191 0:0:0:0:0:ffff:4827:15bf
72.39.21.192 0:0:0:0:0:ffff:4827:15c0
72.39.21.193 0:0:0:0:0:ffff:4827:15c1
72.39.21.194 0:0:0:0:0:ffff:4827:15c2
72.39.21.195 0:0:0:0:0:ffff:4827:15c3
72.39.21.196 0:0:0:0:0:ffff:4827:15c4
72.39.21.197 0:0:0:0:0:ffff:4827:15c5
72.39.21.198 0:0:0:0:0:ffff:4827:15c6
72.39.21.199 0:0:0:0:0:ffff:4827:15c7
72.39.21.200 0:0:0:0:0:ffff:4827:15c8
72.39.21.201 0:0:0:0:0:ffff:4827:15c9
72.39.21.202 0:0:0:0:0:ffff:4827:15ca
72.39.21.203 0:0:0:0:0:ffff:4827:15cb
72.39.21.204 0:0:0:0:0:ffff:4827:15cc
72.39.21.205 0:0:0:0:0:ffff:4827:15cd
72.39.21.206 0:0:0:0:0:ffff:4827:15ce
72.39.21.207 0:0:0:0:0:ffff:4827:15cf
72.39.21.208 0:0:0:0:0:ffff:4827:15d0
72.39.21.209 0:0:0:0:0:ffff:4827:15d1
72.39.21.210 0:0:0:0:0:ffff:4827:15d2
72.39.21.211 0:0:0:0:0:ffff:4827:15d3
72.39.21.212 0:0:0:0:0:ffff:4827:15d4
72.39.21.213 0:0:0:0:0:ffff:4827:15d5
72.39.21.214 0:0:0:0:0:ffff:4827:15d6
72.39.21.215 0:0:0:0:0:ffff:4827:15d7
72.39.21.216 0:0:0:0:0:ffff:4827:15d8
72.39.21.217 0:0:0:0:0:ffff:4827:15d9
72.39.21.218 0:0:0:0:0:ffff:4827:15da
72.39.21.219 0:0:0:0:0:ffff:4827:15db
72.39.21.220 0:0:0:0:0:ffff:4827:15dc
72.39.21.221 0:0:0:0:0:ffff:4827:15dd
72.39.21.222 0:0:0:0:0:ffff:4827:15de
72.39.21.223 0:0:0:0:0:ffff:4827:15df
72.39.21.224 0:0:0:0:0:ffff:4827:15e0
72.39.21.225 0:0:0:0:0:ffff:4827:15e1
72.39.21.226 0:0:0:0:0:ffff:4827:15e2
72.39.21.227 0:0:0:0:0:ffff:4827:15e3
72.39.21.228 0:0:0:0:0:ffff:4827:15e4
72.39.21.229 0:0:0:0:0:ffff:4827:15e5
72.39.21.230 0:0:0:0:0:ffff:4827:15e6
72.39.21.231 0:0:0:0:0:ffff:4827:15e7
72.39.21.232 0:0:0:0:0:ffff:4827:15e8
72.39.21.233 0:0:0:0:0:ffff:4827:15e9
72.39.21.234 0:0:0:0:0:ffff:4827:15ea
72.39.21.235 0:0:0:0:0:ffff:4827:15eb
72.39.21.236 0:0:0:0:0:ffff:4827:15ec
72.39.21.237 0:0:0:0:0:ffff:4827:15ed
72.39.21.238 0:0:0:0:0:ffff:4827:15ee
72.39.21.239 0:0:0:0:0:ffff:4827:15ef
72.39.21.240 0:0:0:0:0:ffff:4827:15f0
72.39.21.241 0:0:0:0:0:ffff:4827:15f1
72.39.21.242 0:0:0:0:0:ffff:4827:15f2
72.39.21.243 0:0:0:0:0:ffff:4827:15f3
72.39.21.244 0:0:0:0:0:ffff:4827:15f4
72.39.21.245 0:0:0:0:0:ffff:4827:15f5
72.39.21.246 0:0:0:0:0:ffff:4827:15f6
72.39.21.247 0:0:0:0:0:ffff:4827:15f7
72.39.21.248 0:0:0:0:0:ffff:4827:15f8
72.39.21.249 0:0:0:0:0:ffff:4827:15f9
72.39.21.250 0:0:0:0:0:ffff:4827:15fa
72.39.21.251 0:0:0:0:0:ffff:4827:15fb
72.39.21.252 0:0:0:0:0:ffff:4827:15fc
72.39.21.253 0:0:0:0:0:ffff:4827:15fd
72.39.21.254 0:0:0:0:0:ffff:4827:15fe
72.39.21.255 0:0:0:0:0:ffff:4827:15ff


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.