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
57.7.21.1 0:0:0:0:0:ffff:3907:1501
57.7.21.2 0:0:0:0:0:ffff:3907:1502
57.7.21.3 0:0:0:0:0:ffff:3907:1503
57.7.21.4 0:0:0:0:0:ffff:3907:1504
57.7.21.5 0:0:0:0:0:ffff:3907:1505
57.7.21.6 0:0:0:0:0:ffff:3907:1506
57.7.21.7 0:0:0:0:0:ffff:3907:1507
57.7.21.8 0:0:0:0:0:ffff:3907:1508
57.7.21.9 0:0:0:0:0:ffff:3907:1509
57.7.21.10 0:0:0:0:0:ffff:3907:150a
57.7.21.11 0:0:0:0:0:ffff:3907:150b
57.7.21.12 0:0:0:0:0:ffff:3907:150c
57.7.21.13 0:0:0:0:0:ffff:3907:150d
57.7.21.14 0:0:0:0:0:ffff:3907:150e
57.7.21.15 0:0:0:0:0:ffff:3907:150f
57.7.21.16 0:0:0:0:0:ffff:3907:1510
57.7.21.17 0:0:0:0:0:ffff:3907:1511
57.7.21.18 0:0:0:0:0:ffff:3907:1512
57.7.21.19 0:0:0:0:0:ffff:3907:1513
57.7.21.20 0:0:0:0:0:ffff:3907:1514
57.7.21.21 0:0:0:0:0:ffff:3907:1515
57.7.21.22 0:0:0:0:0:ffff:3907:1516
57.7.21.23 0:0:0:0:0:ffff:3907:1517
57.7.21.24 0:0:0:0:0:ffff:3907:1518
57.7.21.25 0:0:0:0:0:ffff:3907:1519
57.7.21.26 0:0:0:0:0:ffff:3907:151a
57.7.21.27 0:0:0:0:0:ffff:3907:151b
57.7.21.28 0:0:0:0:0:ffff:3907:151c
57.7.21.29 0:0:0:0:0:ffff:3907:151d
57.7.21.30 0:0:0:0:0:ffff:3907:151e
57.7.21.31 0:0:0:0:0:ffff:3907:151f
57.7.21.32 0:0:0:0:0:ffff:3907:1520
57.7.21.33 0:0:0:0:0:ffff:3907:1521
57.7.21.34 0:0:0:0:0:ffff:3907:1522
57.7.21.35 0:0:0:0:0:ffff:3907:1523
57.7.21.36 0:0:0:0:0:ffff:3907:1524
57.7.21.37 0:0:0:0:0:ffff:3907:1525
57.7.21.38 0:0:0:0:0:ffff:3907:1526
57.7.21.39 0:0:0:0:0:ffff:3907:1527
57.7.21.40 0:0:0:0:0:ffff:3907:1528
57.7.21.41 0:0:0:0:0:ffff:3907:1529
57.7.21.42 0:0:0:0:0:ffff:3907:152a
57.7.21.43 0:0:0:0:0:ffff:3907:152b
57.7.21.44 0:0:0:0:0:ffff:3907:152c
57.7.21.45 0:0:0:0:0:ffff:3907:152d
57.7.21.46 0:0:0:0:0:ffff:3907:152e
57.7.21.47 0:0:0:0:0:ffff:3907:152f
57.7.21.48 0:0:0:0:0:ffff:3907:1530
57.7.21.49 0:0:0:0:0:ffff:3907:1531
57.7.21.50 0:0:0:0:0:ffff:3907:1532
57.7.21.51 0:0:0:0:0:ffff:3907:1533
57.7.21.52 0:0:0:0:0:ffff:3907:1534
57.7.21.53 0:0:0:0:0:ffff:3907:1535
57.7.21.54 0:0:0:0:0:ffff:3907:1536
57.7.21.55 0:0:0:0:0:ffff:3907:1537
57.7.21.56 0:0:0:0:0:ffff:3907:1538
57.7.21.57 0:0:0:0:0:ffff:3907:1539
57.7.21.58 0:0:0:0:0:ffff:3907:153a
57.7.21.59 0:0:0:0:0:ffff:3907:153b
57.7.21.60 0:0:0:0:0:ffff:3907:153c


57.7.21.61 0:0:0:0:0:ffff:3907:153d
57.7.21.62 0:0:0:0:0:ffff:3907:153e
57.7.21.63 0:0:0:0:0:ffff:3907:153f
57.7.21.64 0:0:0:0:0:ffff:3907:1540
57.7.21.65 0:0:0:0:0:ffff:3907:1541
57.7.21.66 0:0:0:0:0:ffff:3907:1542
57.7.21.67 0:0:0:0:0:ffff:3907:1543
57.7.21.68 0:0:0:0:0:ffff:3907:1544
57.7.21.69 0:0:0:0:0:ffff:3907:1545
57.7.21.70 0:0:0:0:0:ffff:3907:1546
57.7.21.71 0:0:0:0:0:ffff:3907:1547
57.7.21.72 0:0:0:0:0:ffff:3907:1548
57.7.21.73 0:0:0:0:0:ffff:3907:1549
57.7.21.74 0:0:0:0:0:ffff:3907:154a
57.7.21.75 0:0:0:0:0:ffff:3907:154b
57.7.21.76 0:0:0:0:0:ffff:3907:154c
57.7.21.77 0:0:0:0:0:ffff:3907:154d
57.7.21.78 0:0:0:0:0:ffff:3907:154e
57.7.21.79 0:0:0:0:0:ffff:3907:154f
57.7.21.80 0:0:0:0:0:ffff:3907:1550
57.7.21.81 0:0:0:0:0:ffff:3907:1551
57.7.21.82 0:0:0:0:0:ffff:3907:1552
57.7.21.83 0:0:0:0:0:ffff:3907:1553
57.7.21.84 0:0:0:0:0:ffff:3907:1554
57.7.21.85 0:0:0:0:0:ffff:3907:1555
57.7.21.86 0:0:0:0:0:ffff:3907:1556
57.7.21.87 0:0:0:0:0:ffff:3907:1557
57.7.21.88 0:0:0:0:0:ffff:3907:1558
57.7.21.89 0:0:0:0:0:ffff:3907:1559
57.7.21.90 0:0:0:0:0:ffff:3907:155a
57.7.21.91 0:0:0:0:0:ffff:3907:155b
57.7.21.92 0:0:0:0:0:ffff:3907:155c
57.7.21.93 0:0:0:0:0:ffff:3907:155d
57.7.21.94 0:0:0:0:0:ffff:3907:155e
57.7.21.95 0:0:0:0:0:ffff:3907:155f
57.7.21.96 0:0:0:0:0:ffff:3907:1560
57.7.21.97 0:0:0:0:0:ffff:3907:1561
57.7.21.98 0:0:0:0:0:ffff:3907:1562
57.7.21.99 0:0:0:0:0:ffff:3907:1563
57.7.21.100 0:0:0:0:0:ffff:3907:1564
57.7.21.101 0:0:0:0:0:ffff:3907:1565
57.7.21.102 0:0:0:0:0:ffff:3907:1566
57.7.21.103 0:0:0:0:0:ffff:3907:1567
57.7.21.104 0:0:0:0:0:ffff:3907:1568
57.7.21.105 0:0:0:0:0:ffff:3907:1569
57.7.21.106 0:0:0:0:0:ffff:3907:156a
57.7.21.107 0:0:0:0:0:ffff:3907:156b
57.7.21.108 0:0:0:0:0:ffff:3907:156c
57.7.21.109 0:0:0:0:0:ffff:3907:156d
57.7.21.110 0:0:0:0:0:ffff:3907:156e
57.7.21.111 0:0:0:0:0:ffff:3907:156f
57.7.21.112 0:0:0:0:0:ffff:3907:1570
57.7.21.113 0:0:0:0:0:ffff:3907:1571
57.7.21.114 0:0:0:0:0:ffff:3907:1572
57.7.21.115 0:0:0:0:0:ffff:3907:1573
57.7.21.116 0:0:0:0:0:ffff:3907:1574
57.7.21.117 0:0:0:0:0:ffff:3907:1575
57.7.21.118 0:0:0:0:0:ffff:3907:1576
57.7.21.119 0:0:0:0:0:ffff:3907:1577
57.7.21.120 0:0:0:0:0:ffff:3907:1578


57.7.21.121 0:0:0:0:0:ffff:3907:1579
57.7.21.122 0:0:0:0:0:ffff:3907:157a
57.7.21.123 0:0:0:0:0:ffff:3907:157b
57.7.21.124 0:0:0:0:0:ffff:3907:157c
57.7.21.125 0:0:0:0:0:ffff:3907:157d
57.7.21.126 0:0:0:0:0:ffff:3907:157e
57.7.21.127 0:0:0:0:0:ffff:3907:157f
57.7.21.128 0:0:0:0:0:ffff:3907:1580
57.7.21.129 0:0:0:0:0:ffff:3907:1581
57.7.21.130 0:0:0:0:0:ffff:3907:1582
57.7.21.131 0:0:0:0:0:ffff:3907:1583
57.7.21.132 0:0:0:0:0:ffff:3907:1584
57.7.21.133 0:0:0:0:0:ffff:3907:1585
57.7.21.134 0:0:0:0:0:ffff:3907:1586
57.7.21.135 0:0:0:0:0:ffff:3907:1587
57.7.21.136 0:0:0:0:0:ffff:3907:1588
57.7.21.137 0:0:0:0:0:ffff:3907:1589
57.7.21.138 0:0:0:0:0:ffff:3907:158a
57.7.21.139 0:0:0:0:0:ffff:3907:158b
57.7.21.140 0:0:0:0:0:ffff:3907:158c
57.7.21.141 0:0:0:0:0:ffff:3907:158d
57.7.21.142 0:0:0:0:0:ffff:3907:158e
57.7.21.143 0:0:0:0:0:ffff:3907:158f
57.7.21.144 0:0:0:0:0:ffff:3907:1590
57.7.21.145 0:0:0:0:0:ffff:3907:1591
57.7.21.146 0:0:0:0:0:ffff:3907:1592
57.7.21.147 0:0:0:0:0:ffff:3907:1593
57.7.21.148 0:0:0:0:0:ffff:3907:1594
57.7.21.149 0:0:0:0:0:ffff:3907:1595
57.7.21.150 0:0:0:0:0:ffff:3907:1596
57.7.21.151 0:0:0:0:0:ffff:3907:1597
57.7.21.152 0:0:0:0:0:ffff:3907:1598
57.7.21.153 0:0:0:0:0:ffff:3907:1599
57.7.21.154 0:0:0:0:0:ffff:3907:159a
57.7.21.155 0:0:0:0:0:ffff:3907:159b
57.7.21.156 0:0:0:0:0:ffff:3907:159c
57.7.21.157 0:0:0:0:0:ffff:3907:159d
57.7.21.158 0:0:0:0:0:ffff:3907:159e
57.7.21.159 0:0:0:0:0:ffff:3907:159f
57.7.21.160 0:0:0:0:0:ffff:3907:15a0
57.7.21.161 0:0:0:0:0:ffff:3907:15a1
57.7.21.162 0:0:0:0:0:ffff:3907:15a2
57.7.21.163 0:0:0:0:0:ffff:3907:15a3
57.7.21.164 0:0:0:0:0:ffff:3907:15a4
57.7.21.165 0:0:0:0:0:ffff:3907:15a5
57.7.21.166 0:0:0:0:0:ffff:3907:15a6
57.7.21.167 0:0:0:0:0:ffff:3907:15a7
57.7.21.168 0:0:0:0:0:ffff:3907:15a8
57.7.21.169 0:0:0:0:0:ffff:3907:15a9
57.7.21.170 0:0:0:0:0:ffff:3907:15aa
57.7.21.171 0:0:0:0:0:ffff:3907:15ab
57.7.21.172 0:0:0:0:0:ffff:3907:15ac
57.7.21.173 0:0:0:0:0:ffff:3907:15ad
57.7.21.174 0:0:0:0:0:ffff:3907:15ae
57.7.21.175 0:0:0:0:0:ffff:3907:15af
57.7.21.176 0:0:0:0:0:ffff:3907:15b0
57.7.21.177 0:0:0:0:0:ffff:3907:15b1
57.7.21.178 0:0:0:0:0:ffff:3907:15b2
57.7.21.179 0:0:0:0:0:ffff:3907:15b3
57.7.21.180 0:0:0:0:0:ffff:3907:15b4


57.7.21.181 0:0:0:0:0:ffff:3907:15b5
57.7.21.182 0:0:0:0:0:ffff:3907:15b6
57.7.21.183 0:0:0:0:0:ffff:3907:15b7
57.7.21.184 0:0:0:0:0:ffff:3907:15b8
57.7.21.185 0:0:0:0:0:ffff:3907:15b9
57.7.21.186 0:0:0:0:0:ffff:3907:15ba
57.7.21.187 0:0:0:0:0:ffff:3907:15bb
57.7.21.188 0:0:0:0:0:ffff:3907:15bc
57.7.21.189 0:0:0:0:0:ffff:3907:15bd
57.7.21.190 0:0:0:0:0:ffff:3907:15be
57.7.21.191 0:0:0:0:0:ffff:3907:15bf
57.7.21.192 0:0:0:0:0:ffff:3907:15c0
57.7.21.193 0:0:0:0:0:ffff:3907:15c1
57.7.21.194 0:0:0:0:0:ffff:3907:15c2
57.7.21.195 0:0:0:0:0:ffff:3907:15c3
57.7.21.196 0:0:0:0:0:ffff:3907:15c4
57.7.21.197 0:0:0:0:0:ffff:3907:15c5
57.7.21.198 0:0:0:0:0:ffff:3907:15c6
57.7.21.199 0:0:0:0:0:ffff:3907:15c7
57.7.21.200 0:0:0:0:0:ffff:3907:15c8
57.7.21.201 0:0:0:0:0:ffff:3907:15c9
57.7.21.202 0:0:0:0:0:ffff:3907:15ca
57.7.21.203 0:0:0:0:0:ffff:3907:15cb
57.7.21.204 0:0:0:0:0:ffff:3907:15cc
57.7.21.205 0:0:0:0:0:ffff:3907:15cd
57.7.21.206 0:0:0:0:0:ffff:3907:15ce
57.7.21.207 0:0:0:0:0:ffff:3907:15cf
57.7.21.208 0:0:0:0:0:ffff:3907:15d0
57.7.21.209 0:0:0:0:0:ffff:3907:15d1
57.7.21.210 0:0:0:0:0:ffff:3907:15d2
57.7.21.211 0:0:0:0:0:ffff:3907:15d3
57.7.21.212 0:0:0:0:0:ffff:3907:15d4
57.7.21.213 0:0:0:0:0:ffff:3907:15d5
57.7.21.214 0:0:0:0:0:ffff:3907:15d6
57.7.21.215 0:0:0:0:0:ffff:3907:15d7
57.7.21.216 0:0:0:0:0:ffff:3907:15d8
57.7.21.217 0:0:0:0:0:ffff:3907:15d9
57.7.21.218 0:0:0:0:0:ffff:3907:15da
57.7.21.219 0:0:0:0:0:ffff:3907:15db
57.7.21.220 0:0:0:0:0:ffff:3907:15dc
57.7.21.221 0:0:0:0:0:ffff:3907:15dd
57.7.21.222 0:0:0:0:0:ffff:3907:15de
57.7.21.223 0:0:0:0:0:ffff:3907:15df
57.7.21.224 0:0:0:0:0:ffff:3907:15e0
57.7.21.225 0:0:0:0:0:ffff:3907:15e1
57.7.21.226 0:0:0:0:0:ffff:3907:15e2
57.7.21.227 0:0:0:0:0:ffff:3907:15e3
57.7.21.228 0:0:0:0:0:ffff:3907:15e4
57.7.21.229 0:0:0:0:0:ffff:3907:15e5
57.7.21.230 0:0:0:0:0:ffff:3907:15e6
57.7.21.231 0:0:0:0:0:ffff:3907:15e7
57.7.21.232 0:0:0:0:0:ffff:3907:15e8
57.7.21.233 0:0:0:0:0:ffff:3907:15e9
57.7.21.234 0:0:0:0:0:ffff:3907:15ea
57.7.21.235 0:0:0:0:0:ffff:3907:15eb
57.7.21.236 0:0:0:0:0:ffff:3907:15ec
57.7.21.237 0:0:0:0:0:ffff:3907:15ed
57.7.21.238 0:0:0:0:0:ffff:3907:15ee
57.7.21.239 0:0:0:0:0:ffff:3907:15ef
57.7.21.240 0:0:0:0:0:ffff:3907:15f0
57.7.21.241 0:0:0:0:0:ffff:3907:15f1
57.7.21.242 0:0:0:0:0:ffff:3907:15f2
57.7.21.243 0:0:0:0:0:ffff:3907:15f3
57.7.21.244 0:0:0:0:0:ffff:3907:15f4
57.7.21.245 0:0:0:0:0:ffff:3907:15f5
57.7.21.246 0:0:0:0:0:ffff:3907:15f6
57.7.21.247 0:0:0:0:0:ffff:3907:15f7
57.7.21.248 0:0:0:0:0:ffff:3907:15f8
57.7.21.249 0:0:0:0:0:ffff:3907:15f9
57.7.21.250 0:0:0:0:0:ffff:3907:15fa
57.7.21.251 0:0:0:0:0:ffff:3907:15fb
57.7.21.252 0:0:0:0:0:ffff:3907:15fc
57.7.21.253 0:0:0:0:0:ffff:3907:15fd
57.7.21.254 0:0:0:0:0:ffff:3907:15fe
57.7.21.255 0:0:0:0:0:ffff:3907:15ff


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.