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
197.76.21.1 0:0:0:0:0:ffff:c54c:1501
197.76.21.2 0:0:0:0:0:ffff:c54c:1502
197.76.21.3 0:0:0:0:0:ffff:c54c:1503
197.76.21.4 0:0:0:0:0:ffff:c54c:1504
197.76.21.5 0:0:0:0:0:ffff:c54c:1505
197.76.21.6 0:0:0:0:0:ffff:c54c:1506
197.76.21.7 0:0:0:0:0:ffff:c54c:1507
197.76.21.8 0:0:0:0:0:ffff:c54c:1508
197.76.21.9 0:0:0:0:0:ffff:c54c:1509
197.76.21.10 0:0:0:0:0:ffff:c54c:150a
197.76.21.11 0:0:0:0:0:ffff:c54c:150b
197.76.21.12 0:0:0:0:0:ffff:c54c:150c
197.76.21.13 0:0:0:0:0:ffff:c54c:150d
197.76.21.14 0:0:0:0:0:ffff:c54c:150e
197.76.21.15 0:0:0:0:0:ffff:c54c:150f
197.76.21.16 0:0:0:0:0:ffff:c54c:1510
197.76.21.17 0:0:0:0:0:ffff:c54c:1511
197.76.21.18 0:0:0:0:0:ffff:c54c:1512
197.76.21.19 0:0:0:0:0:ffff:c54c:1513
197.76.21.20 0:0:0:0:0:ffff:c54c:1514
197.76.21.21 0:0:0:0:0:ffff:c54c:1515
197.76.21.22 0:0:0:0:0:ffff:c54c:1516
197.76.21.23 0:0:0:0:0:ffff:c54c:1517
197.76.21.24 0:0:0:0:0:ffff:c54c:1518
197.76.21.25 0:0:0:0:0:ffff:c54c:1519
197.76.21.26 0:0:0:0:0:ffff:c54c:151a
197.76.21.27 0:0:0:0:0:ffff:c54c:151b
197.76.21.28 0:0:0:0:0:ffff:c54c:151c
197.76.21.29 0:0:0:0:0:ffff:c54c:151d
197.76.21.30 0:0:0:0:0:ffff:c54c:151e
197.76.21.31 0:0:0:0:0:ffff:c54c:151f
197.76.21.32 0:0:0:0:0:ffff:c54c:1520
197.76.21.33 0:0:0:0:0:ffff:c54c:1521
197.76.21.34 0:0:0:0:0:ffff:c54c:1522
197.76.21.35 0:0:0:0:0:ffff:c54c:1523
197.76.21.36 0:0:0:0:0:ffff:c54c:1524
197.76.21.37 0:0:0:0:0:ffff:c54c:1525
197.76.21.38 0:0:0:0:0:ffff:c54c:1526
197.76.21.39 0:0:0:0:0:ffff:c54c:1527
197.76.21.40 0:0:0:0:0:ffff:c54c:1528
197.76.21.41 0:0:0:0:0:ffff:c54c:1529
197.76.21.42 0:0:0:0:0:ffff:c54c:152a
197.76.21.43 0:0:0:0:0:ffff:c54c:152b
197.76.21.44 0:0:0:0:0:ffff:c54c:152c
197.76.21.45 0:0:0:0:0:ffff:c54c:152d
197.76.21.46 0:0:0:0:0:ffff:c54c:152e
197.76.21.47 0:0:0:0:0:ffff:c54c:152f
197.76.21.48 0:0:0:0:0:ffff:c54c:1530
197.76.21.49 0:0:0:0:0:ffff:c54c:1531
197.76.21.50 0:0:0:0:0:ffff:c54c:1532
197.76.21.51 0:0:0:0:0:ffff:c54c:1533
197.76.21.52 0:0:0:0:0:ffff:c54c:1534
197.76.21.53 0:0:0:0:0:ffff:c54c:1535
197.76.21.54 0:0:0:0:0:ffff:c54c:1536
197.76.21.55 0:0:0:0:0:ffff:c54c:1537
197.76.21.56 0:0:0:0:0:ffff:c54c:1538
197.76.21.57 0:0:0:0:0:ffff:c54c:1539
197.76.21.58 0:0:0:0:0:ffff:c54c:153a
197.76.21.59 0:0:0:0:0:ffff:c54c:153b
197.76.21.60 0:0:0:0:0:ffff:c54c:153c


197.76.21.61 0:0:0:0:0:ffff:c54c:153d
197.76.21.62 0:0:0:0:0:ffff:c54c:153e
197.76.21.63 0:0:0:0:0:ffff:c54c:153f
197.76.21.64 0:0:0:0:0:ffff:c54c:1540
197.76.21.65 0:0:0:0:0:ffff:c54c:1541
197.76.21.66 0:0:0:0:0:ffff:c54c:1542
197.76.21.67 0:0:0:0:0:ffff:c54c:1543
197.76.21.68 0:0:0:0:0:ffff:c54c:1544
197.76.21.69 0:0:0:0:0:ffff:c54c:1545
197.76.21.70 0:0:0:0:0:ffff:c54c:1546
197.76.21.71 0:0:0:0:0:ffff:c54c:1547
197.76.21.72 0:0:0:0:0:ffff:c54c:1548
197.76.21.73 0:0:0:0:0:ffff:c54c:1549
197.76.21.74 0:0:0:0:0:ffff:c54c:154a
197.76.21.75 0:0:0:0:0:ffff:c54c:154b
197.76.21.76 0:0:0:0:0:ffff:c54c:154c
197.76.21.77 0:0:0:0:0:ffff:c54c:154d
197.76.21.78 0:0:0:0:0:ffff:c54c:154e
197.76.21.79 0:0:0:0:0:ffff:c54c:154f
197.76.21.80 0:0:0:0:0:ffff:c54c:1550
197.76.21.81 0:0:0:0:0:ffff:c54c:1551
197.76.21.82 0:0:0:0:0:ffff:c54c:1552
197.76.21.83 0:0:0:0:0:ffff:c54c:1553
197.76.21.84 0:0:0:0:0:ffff:c54c:1554
197.76.21.85 0:0:0:0:0:ffff:c54c:1555
197.76.21.86 0:0:0:0:0:ffff:c54c:1556
197.76.21.87 0:0:0:0:0:ffff:c54c:1557
197.76.21.88 0:0:0:0:0:ffff:c54c:1558
197.76.21.89 0:0:0:0:0:ffff:c54c:1559
197.76.21.90 0:0:0:0:0:ffff:c54c:155a
197.76.21.91 0:0:0:0:0:ffff:c54c:155b
197.76.21.92 0:0:0:0:0:ffff:c54c:155c
197.76.21.93 0:0:0:0:0:ffff:c54c:155d
197.76.21.94 0:0:0:0:0:ffff:c54c:155e
197.76.21.95 0:0:0:0:0:ffff:c54c:155f
197.76.21.96 0:0:0:0:0:ffff:c54c:1560
197.76.21.97 0:0:0:0:0:ffff:c54c:1561
197.76.21.98 0:0:0:0:0:ffff:c54c:1562
197.76.21.99 0:0:0:0:0:ffff:c54c:1563
197.76.21.100 0:0:0:0:0:ffff:c54c:1564
197.76.21.101 0:0:0:0:0:ffff:c54c:1565
197.76.21.102 0:0:0:0:0:ffff:c54c:1566
197.76.21.103 0:0:0:0:0:ffff:c54c:1567
197.76.21.104 0:0:0:0:0:ffff:c54c:1568
197.76.21.105 0:0:0:0:0:ffff:c54c:1569
197.76.21.106 0:0:0:0:0:ffff:c54c:156a
197.76.21.107 0:0:0:0:0:ffff:c54c:156b
197.76.21.108 0:0:0:0:0:ffff:c54c:156c
197.76.21.109 0:0:0:0:0:ffff:c54c:156d
197.76.21.110 0:0:0:0:0:ffff:c54c:156e
197.76.21.111 0:0:0:0:0:ffff:c54c:156f
197.76.21.112 0:0:0:0:0:ffff:c54c:1570
197.76.21.113 0:0:0:0:0:ffff:c54c:1571
197.76.21.114 0:0:0:0:0:ffff:c54c:1572
197.76.21.115 0:0:0:0:0:ffff:c54c:1573
197.76.21.116 0:0:0:0:0:ffff:c54c:1574
197.76.21.117 0:0:0:0:0:ffff:c54c:1575
197.76.21.118 0:0:0:0:0:ffff:c54c:1576
197.76.21.119 0:0:0:0:0:ffff:c54c:1577
197.76.21.120 0:0:0:0:0:ffff:c54c:1578


197.76.21.121 0:0:0:0:0:ffff:c54c:1579
197.76.21.122 0:0:0:0:0:ffff:c54c:157a
197.76.21.123 0:0:0:0:0:ffff:c54c:157b
197.76.21.124 0:0:0:0:0:ffff:c54c:157c
197.76.21.125 0:0:0:0:0:ffff:c54c:157d
197.76.21.126 0:0:0:0:0:ffff:c54c:157e
197.76.21.127 0:0:0:0:0:ffff:c54c:157f
197.76.21.128 0:0:0:0:0:ffff:c54c:1580
197.76.21.129 0:0:0:0:0:ffff:c54c:1581
197.76.21.130 0:0:0:0:0:ffff:c54c:1582
197.76.21.131 0:0:0:0:0:ffff:c54c:1583
197.76.21.132 0:0:0:0:0:ffff:c54c:1584
197.76.21.133 0:0:0:0:0:ffff:c54c:1585
197.76.21.134 0:0:0:0:0:ffff:c54c:1586
197.76.21.135 0:0:0:0:0:ffff:c54c:1587
197.76.21.136 0:0:0:0:0:ffff:c54c:1588
197.76.21.137 0:0:0:0:0:ffff:c54c:1589
197.76.21.138 0:0:0:0:0:ffff:c54c:158a
197.76.21.139 0:0:0:0:0:ffff:c54c:158b
197.76.21.140 0:0:0:0:0:ffff:c54c:158c
197.76.21.141 0:0:0:0:0:ffff:c54c:158d
197.76.21.142 0:0:0:0:0:ffff:c54c:158e
197.76.21.143 0:0:0:0:0:ffff:c54c:158f
197.76.21.144 0:0:0:0:0:ffff:c54c:1590
197.76.21.145 0:0:0:0:0:ffff:c54c:1591
197.76.21.146 0:0:0:0:0:ffff:c54c:1592
197.76.21.147 0:0:0:0:0:ffff:c54c:1593
197.76.21.148 0:0:0:0:0:ffff:c54c:1594
197.76.21.149 0:0:0:0:0:ffff:c54c:1595
197.76.21.150 0:0:0:0:0:ffff:c54c:1596
197.76.21.151 0:0:0:0:0:ffff:c54c:1597
197.76.21.152 0:0:0:0:0:ffff:c54c:1598
197.76.21.153 0:0:0:0:0:ffff:c54c:1599
197.76.21.154 0:0:0:0:0:ffff:c54c:159a
197.76.21.155 0:0:0:0:0:ffff:c54c:159b
197.76.21.156 0:0:0:0:0:ffff:c54c:159c
197.76.21.157 0:0:0:0:0:ffff:c54c:159d
197.76.21.158 0:0:0:0:0:ffff:c54c:159e
197.76.21.159 0:0:0:0:0:ffff:c54c:159f
197.76.21.160 0:0:0:0:0:ffff:c54c:15a0
197.76.21.161 0:0:0:0:0:ffff:c54c:15a1
197.76.21.162 0:0:0:0:0:ffff:c54c:15a2
197.76.21.163 0:0:0:0:0:ffff:c54c:15a3
197.76.21.164 0:0:0:0:0:ffff:c54c:15a4
197.76.21.165 0:0:0:0:0:ffff:c54c:15a5
197.76.21.166 0:0:0:0:0:ffff:c54c:15a6
197.76.21.167 0:0:0:0:0:ffff:c54c:15a7
197.76.21.168 0:0:0:0:0:ffff:c54c:15a8
197.76.21.169 0:0:0:0:0:ffff:c54c:15a9
197.76.21.170 0:0:0:0:0:ffff:c54c:15aa
197.76.21.171 0:0:0:0:0:ffff:c54c:15ab
197.76.21.172 0:0:0:0:0:ffff:c54c:15ac
197.76.21.173 0:0:0:0:0:ffff:c54c:15ad
197.76.21.174 0:0:0:0:0:ffff:c54c:15ae
197.76.21.175 0:0:0:0:0:ffff:c54c:15af
197.76.21.176 0:0:0:0:0:ffff:c54c:15b0
197.76.21.177 0:0:0:0:0:ffff:c54c:15b1
197.76.21.178 0:0:0:0:0:ffff:c54c:15b2
197.76.21.179 0:0:0:0:0:ffff:c54c:15b3
197.76.21.180 0:0:0:0:0:ffff:c54c:15b4


197.76.21.181 0:0:0:0:0:ffff:c54c:15b5
197.76.21.182 0:0:0:0:0:ffff:c54c:15b6
197.76.21.183 0:0:0:0:0:ffff:c54c:15b7
197.76.21.184 0:0:0:0:0:ffff:c54c:15b8
197.76.21.185 0:0:0:0:0:ffff:c54c:15b9
197.76.21.186 0:0:0:0:0:ffff:c54c:15ba
197.76.21.187 0:0:0:0:0:ffff:c54c:15bb
197.76.21.188 0:0:0:0:0:ffff:c54c:15bc
197.76.21.189 0:0:0:0:0:ffff:c54c:15bd
197.76.21.190 0:0:0:0:0:ffff:c54c:15be
197.76.21.191 0:0:0:0:0:ffff:c54c:15bf
197.76.21.192 0:0:0:0:0:ffff:c54c:15c0
197.76.21.193 0:0:0:0:0:ffff:c54c:15c1
197.76.21.194 0:0:0:0:0:ffff:c54c:15c2
197.76.21.195 0:0:0:0:0:ffff:c54c:15c3
197.76.21.196 0:0:0:0:0:ffff:c54c:15c4
197.76.21.197 0:0:0:0:0:ffff:c54c:15c5
197.76.21.198 0:0:0:0:0:ffff:c54c:15c6
197.76.21.199 0:0:0:0:0:ffff:c54c:15c7
197.76.21.200 0:0:0:0:0:ffff:c54c:15c8
197.76.21.201 0:0:0:0:0:ffff:c54c:15c9
197.76.21.202 0:0:0:0:0:ffff:c54c:15ca
197.76.21.203 0:0:0:0:0:ffff:c54c:15cb
197.76.21.204 0:0:0:0:0:ffff:c54c:15cc
197.76.21.205 0:0:0:0:0:ffff:c54c:15cd
197.76.21.206 0:0:0:0:0:ffff:c54c:15ce
197.76.21.207 0:0:0:0:0:ffff:c54c:15cf
197.76.21.208 0:0:0:0:0:ffff:c54c:15d0
197.76.21.209 0:0:0:0:0:ffff:c54c:15d1
197.76.21.210 0:0:0:0:0:ffff:c54c:15d2
197.76.21.211 0:0:0:0:0:ffff:c54c:15d3
197.76.21.212 0:0:0:0:0:ffff:c54c:15d4
197.76.21.213 0:0:0:0:0:ffff:c54c:15d5
197.76.21.214 0:0:0:0:0:ffff:c54c:15d6
197.76.21.215 0:0:0:0:0:ffff:c54c:15d7
197.76.21.216 0:0:0:0:0:ffff:c54c:15d8
197.76.21.217 0:0:0:0:0:ffff:c54c:15d9
197.76.21.218 0:0:0:0:0:ffff:c54c:15da
197.76.21.219 0:0:0:0:0:ffff:c54c:15db
197.76.21.220 0:0:0:0:0:ffff:c54c:15dc
197.76.21.221 0:0:0:0:0:ffff:c54c:15dd
197.76.21.222 0:0:0:0:0:ffff:c54c:15de
197.76.21.223 0:0:0:0:0:ffff:c54c:15df
197.76.21.224 0:0:0:0:0:ffff:c54c:15e0
197.76.21.225 0:0:0:0:0:ffff:c54c:15e1
197.76.21.226 0:0:0:0:0:ffff:c54c:15e2
197.76.21.227 0:0:0:0:0:ffff:c54c:15e3
197.76.21.228 0:0:0:0:0:ffff:c54c:15e4
197.76.21.229 0:0:0:0:0:ffff:c54c:15e5
197.76.21.230 0:0:0:0:0:ffff:c54c:15e6
197.76.21.231 0:0:0:0:0:ffff:c54c:15e7
197.76.21.232 0:0:0:0:0:ffff:c54c:15e8
197.76.21.233 0:0:0:0:0:ffff:c54c:15e9
197.76.21.234 0:0:0:0:0:ffff:c54c:15ea
197.76.21.235 0:0:0:0:0:ffff:c54c:15eb
197.76.21.236 0:0:0:0:0:ffff:c54c:15ec
197.76.21.237 0:0:0:0:0:ffff:c54c:15ed
197.76.21.238 0:0:0:0:0:ffff:c54c:15ee
197.76.21.239 0:0:0:0:0:ffff:c54c:15ef
197.76.21.240 0:0:0:0:0:ffff:c54c:15f0
197.76.21.241 0:0:0:0:0:ffff:c54c:15f1
197.76.21.242 0:0:0:0:0:ffff:c54c:15f2
197.76.21.243 0:0:0:0:0:ffff:c54c:15f3
197.76.21.244 0:0:0:0:0:ffff:c54c:15f4
197.76.21.245 0:0:0:0:0:ffff:c54c:15f5
197.76.21.246 0:0:0:0:0:ffff:c54c:15f6
197.76.21.247 0:0:0:0:0:ffff:c54c:15f7
197.76.21.248 0:0:0:0:0:ffff:c54c:15f8
197.76.21.249 0:0:0:0:0:ffff:c54c:15f9
197.76.21.250 0:0:0:0:0:ffff:c54c:15fa
197.76.21.251 0:0:0:0:0:ffff:c54c:15fb
197.76.21.252 0:0:0:0:0:ffff:c54c:15fc
197.76.21.253 0:0:0:0:0:ffff:c54c:15fd
197.76.21.254 0:0:0:0:0:ffff:c54c:15fe
197.76.21.255 0:0:0:0:0:ffff:c54c: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.