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
127.243.20.1 0:0:0:0:0:ffff:7ff3:1401
127.243.20.2 0:0:0:0:0:ffff:7ff3:1402
127.243.20.3 0:0:0:0:0:ffff:7ff3:1403
127.243.20.4 0:0:0:0:0:ffff:7ff3:1404
127.243.20.5 0:0:0:0:0:ffff:7ff3:1405
127.243.20.6 0:0:0:0:0:ffff:7ff3:1406
127.243.20.7 0:0:0:0:0:ffff:7ff3:1407
127.243.20.8 0:0:0:0:0:ffff:7ff3:1408
127.243.20.9 0:0:0:0:0:ffff:7ff3:1409
127.243.20.10 0:0:0:0:0:ffff:7ff3:140a
127.243.20.11 0:0:0:0:0:ffff:7ff3:140b
127.243.20.12 0:0:0:0:0:ffff:7ff3:140c
127.243.20.13 0:0:0:0:0:ffff:7ff3:140d
127.243.20.14 0:0:0:0:0:ffff:7ff3:140e
127.243.20.15 0:0:0:0:0:ffff:7ff3:140f
127.243.20.16 0:0:0:0:0:ffff:7ff3:1410
127.243.20.17 0:0:0:0:0:ffff:7ff3:1411
127.243.20.18 0:0:0:0:0:ffff:7ff3:1412
127.243.20.19 0:0:0:0:0:ffff:7ff3:1413
127.243.20.20 0:0:0:0:0:ffff:7ff3:1414
127.243.20.21 0:0:0:0:0:ffff:7ff3:1415
127.243.20.22 0:0:0:0:0:ffff:7ff3:1416
127.243.20.23 0:0:0:0:0:ffff:7ff3:1417
127.243.20.24 0:0:0:0:0:ffff:7ff3:1418
127.243.20.25 0:0:0:0:0:ffff:7ff3:1419
127.243.20.26 0:0:0:0:0:ffff:7ff3:141a
127.243.20.27 0:0:0:0:0:ffff:7ff3:141b
127.243.20.28 0:0:0:0:0:ffff:7ff3:141c
127.243.20.29 0:0:0:0:0:ffff:7ff3:141d
127.243.20.30 0:0:0:0:0:ffff:7ff3:141e
127.243.20.31 0:0:0:0:0:ffff:7ff3:141f
127.243.20.32 0:0:0:0:0:ffff:7ff3:1420
127.243.20.33 0:0:0:0:0:ffff:7ff3:1421
127.243.20.34 0:0:0:0:0:ffff:7ff3:1422
127.243.20.35 0:0:0:0:0:ffff:7ff3:1423
127.243.20.36 0:0:0:0:0:ffff:7ff3:1424
127.243.20.37 0:0:0:0:0:ffff:7ff3:1425
127.243.20.38 0:0:0:0:0:ffff:7ff3:1426
127.243.20.39 0:0:0:0:0:ffff:7ff3:1427
127.243.20.40 0:0:0:0:0:ffff:7ff3:1428
127.243.20.41 0:0:0:0:0:ffff:7ff3:1429
127.243.20.42 0:0:0:0:0:ffff:7ff3:142a
127.243.20.43 0:0:0:0:0:ffff:7ff3:142b
127.243.20.44 0:0:0:0:0:ffff:7ff3:142c
127.243.20.45 0:0:0:0:0:ffff:7ff3:142d
127.243.20.46 0:0:0:0:0:ffff:7ff3:142e
127.243.20.47 0:0:0:0:0:ffff:7ff3:142f
127.243.20.48 0:0:0:0:0:ffff:7ff3:1430
127.243.20.49 0:0:0:0:0:ffff:7ff3:1431
127.243.20.50 0:0:0:0:0:ffff:7ff3:1432
127.243.20.51 0:0:0:0:0:ffff:7ff3:1433
127.243.20.52 0:0:0:0:0:ffff:7ff3:1434
127.243.20.53 0:0:0:0:0:ffff:7ff3:1435
127.243.20.54 0:0:0:0:0:ffff:7ff3:1436
127.243.20.55 0:0:0:0:0:ffff:7ff3:1437
127.243.20.56 0:0:0:0:0:ffff:7ff3:1438
127.243.20.57 0:0:0:0:0:ffff:7ff3:1439
127.243.20.58 0:0:0:0:0:ffff:7ff3:143a
127.243.20.59 0:0:0:0:0:ffff:7ff3:143b
127.243.20.60 0:0:0:0:0:ffff:7ff3:143c


127.243.20.61 0:0:0:0:0:ffff:7ff3:143d
127.243.20.62 0:0:0:0:0:ffff:7ff3:143e
127.243.20.63 0:0:0:0:0:ffff:7ff3:143f
127.243.20.64 0:0:0:0:0:ffff:7ff3:1440
127.243.20.65 0:0:0:0:0:ffff:7ff3:1441
127.243.20.66 0:0:0:0:0:ffff:7ff3:1442
127.243.20.67 0:0:0:0:0:ffff:7ff3:1443
127.243.20.68 0:0:0:0:0:ffff:7ff3:1444
127.243.20.69 0:0:0:0:0:ffff:7ff3:1445
127.243.20.70 0:0:0:0:0:ffff:7ff3:1446
127.243.20.71 0:0:0:0:0:ffff:7ff3:1447
127.243.20.72 0:0:0:0:0:ffff:7ff3:1448
127.243.20.73 0:0:0:0:0:ffff:7ff3:1449
127.243.20.74 0:0:0:0:0:ffff:7ff3:144a
127.243.20.75 0:0:0:0:0:ffff:7ff3:144b
127.243.20.76 0:0:0:0:0:ffff:7ff3:144c
127.243.20.77 0:0:0:0:0:ffff:7ff3:144d
127.243.20.78 0:0:0:0:0:ffff:7ff3:144e
127.243.20.79 0:0:0:0:0:ffff:7ff3:144f
127.243.20.80 0:0:0:0:0:ffff:7ff3:1450
127.243.20.81 0:0:0:0:0:ffff:7ff3:1451
127.243.20.82 0:0:0:0:0:ffff:7ff3:1452
127.243.20.83 0:0:0:0:0:ffff:7ff3:1453
127.243.20.84 0:0:0:0:0:ffff:7ff3:1454
127.243.20.85 0:0:0:0:0:ffff:7ff3:1455
127.243.20.86 0:0:0:0:0:ffff:7ff3:1456
127.243.20.87 0:0:0:0:0:ffff:7ff3:1457
127.243.20.88 0:0:0:0:0:ffff:7ff3:1458
127.243.20.89 0:0:0:0:0:ffff:7ff3:1459
127.243.20.90 0:0:0:0:0:ffff:7ff3:145a
127.243.20.91 0:0:0:0:0:ffff:7ff3:145b
127.243.20.92 0:0:0:0:0:ffff:7ff3:145c
127.243.20.93 0:0:0:0:0:ffff:7ff3:145d
127.243.20.94 0:0:0:0:0:ffff:7ff3:145e
127.243.20.95 0:0:0:0:0:ffff:7ff3:145f
127.243.20.96 0:0:0:0:0:ffff:7ff3:1460
127.243.20.97 0:0:0:0:0:ffff:7ff3:1461
127.243.20.98 0:0:0:0:0:ffff:7ff3:1462
127.243.20.99 0:0:0:0:0:ffff:7ff3:1463
127.243.20.100 0:0:0:0:0:ffff:7ff3:1464
127.243.20.101 0:0:0:0:0:ffff:7ff3:1465
127.243.20.102 0:0:0:0:0:ffff:7ff3:1466
127.243.20.103 0:0:0:0:0:ffff:7ff3:1467
127.243.20.104 0:0:0:0:0:ffff:7ff3:1468
127.243.20.105 0:0:0:0:0:ffff:7ff3:1469
127.243.20.106 0:0:0:0:0:ffff:7ff3:146a
127.243.20.107 0:0:0:0:0:ffff:7ff3:146b
127.243.20.108 0:0:0:0:0:ffff:7ff3:146c
127.243.20.109 0:0:0:0:0:ffff:7ff3:146d
127.243.20.110 0:0:0:0:0:ffff:7ff3:146e
127.243.20.111 0:0:0:0:0:ffff:7ff3:146f
127.243.20.112 0:0:0:0:0:ffff:7ff3:1470
127.243.20.113 0:0:0:0:0:ffff:7ff3:1471
127.243.20.114 0:0:0:0:0:ffff:7ff3:1472
127.243.20.115 0:0:0:0:0:ffff:7ff3:1473
127.243.20.116 0:0:0:0:0:ffff:7ff3:1474
127.243.20.117 0:0:0:0:0:ffff:7ff3:1475
127.243.20.118 0:0:0:0:0:ffff:7ff3:1476
127.243.20.119 0:0:0:0:0:ffff:7ff3:1477
127.243.20.120 0:0:0:0:0:ffff:7ff3:1478


127.243.20.121 0:0:0:0:0:ffff:7ff3:1479
127.243.20.122 0:0:0:0:0:ffff:7ff3:147a
127.243.20.123 0:0:0:0:0:ffff:7ff3:147b
127.243.20.124 0:0:0:0:0:ffff:7ff3:147c
127.243.20.125 0:0:0:0:0:ffff:7ff3:147d
127.243.20.126 0:0:0:0:0:ffff:7ff3:147e
127.243.20.127 0:0:0:0:0:ffff:7ff3:147f
127.243.20.128 0:0:0:0:0:ffff:7ff3:1480
127.243.20.129 0:0:0:0:0:ffff:7ff3:1481
127.243.20.130 0:0:0:0:0:ffff:7ff3:1482
127.243.20.131 0:0:0:0:0:ffff:7ff3:1483
127.243.20.132 0:0:0:0:0:ffff:7ff3:1484
127.243.20.133 0:0:0:0:0:ffff:7ff3:1485
127.243.20.134 0:0:0:0:0:ffff:7ff3:1486
127.243.20.135 0:0:0:0:0:ffff:7ff3:1487
127.243.20.136 0:0:0:0:0:ffff:7ff3:1488
127.243.20.137 0:0:0:0:0:ffff:7ff3:1489
127.243.20.138 0:0:0:0:0:ffff:7ff3:148a
127.243.20.139 0:0:0:0:0:ffff:7ff3:148b
127.243.20.140 0:0:0:0:0:ffff:7ff3:148c
127.243.20.141 0:0:0:0:0:ffff:7ff3:148d
127.243.20.142 0:0:0:0:0:ffff:7ff3:148e
127.243.20.143 0:0:0:0:0:ffff:7ff3:148f
127.243.20.144 0:0:0:0:0:ffff:7ff3:1490
127.243.20.145 0:0:0:0:0:ffff:7ff3:1491
127.243.20.146 0:0:0:0:0:ffff:7ff3:1492
127.243.20.147 0:0:0:0:0:ffff:7ff3:1493
127.243.20.148 0:0:0:0:0:ffff:7ff3:1494
127.243.20.149 0:0:0:0:0:ffff:7ff3:1495
127.243.20.150 0:0:0:0:0:ffff:7ff3:1496
127.243.20.151 0:0:0:0:0:ffff:7ff3:1497
127.243.20.152 0:0:0:0:0:ffff:7ff3:1498
127.243.20.153 0:0:0:0:0:ffff:7ff3:1499
127.243.20.154 0:0:0:0:0:ffff:7ff3:149a
127.243.20.155 0:0:0:0:0:ffff:7ff3:149b
127.243.20.156 0:0:0:0:0:ffff:7ff3:149c
127.243.20.157 0:0:0:0:0:ffff:7ff3:149d
127.243.20.158 0:0:0:0:0:ffff:7ff3:149e
127.243.20.159 0:0:0:0:0:ffff:7ff3:149f
127.243.20.160 0:0:0:0:0:ffff:7ff3:14a0
127.243.20.161 0:0:0:0:0:ffff:7ff3:14a1
127.243.20.162 0:0:0:0:0:ffff:7ff3:14a2
127.243.20.163 0:0:0:0:0:ffff:7ff3:14a3
127.243.20.164 0:0:0:0:0:ffff:7ff3:14a4
127.243.20.165 0:0:0:0:0:ffff:7ff3:14a5
127.243.20.166 0:0:0:0:0:ffff:7ff3:14a6
127.243.20.167 0:0:0:0:0:ffff:7ff3:14a7
127.243.20.168 0:0:0:0:0:ffff:7ff3:14a8
127.243.20.169 0:0:0:0:0:ffff:7ff3:14a9
127.243.20.170 0:0:0:0:0:ffff:7ff3:14aa
127.243.20.171 0:0:0:0:0:ffff:7ff3:14ab
127.243.20.172 0:0:0:0:0:ffff:7ff3:14ac
127.243.20.173 0:0:0:0:0:ffff:7ff3:14ad
127.243.20.174 0:0:0:0:0:ffff:7ff3:14ae
127.243.20.175 0:0:0:0:0:ffff:7ff3:14af
127.243.20.176 0:0:0:0:0:ffff:7ff3:14b0
127.243.20.177 0:0:0:0:0:ffff:7ff3:14b1
127.243.20.178 0:0:0:0:0:ffff:7ff3:14b2
127.243.20.179 0:0:0:0:0:ffff:7ff3:14b3
127.243.20.180 0:0:0:0:0:ffff:7ff3:14b4


127.243.20.181 0:0:0:0:0:ffff:7ff3:14b5
127.243.20.182 0:0:0:0:0:ffff:7ff3:14b6
127.243.20.183 0:0:0:0:0:ffff:7ff3:14b7
127.243.20.184 0:0:0:0:0:ffff:7ff3:14b8
127.243.20.185 0:0:0:0:0:ffff:7ff3:14b9
127.243.20.186 0:0:0:0:0:ffff:7ff3:14ba
127.243.20.187 0:0:0:0:0:ffff:7ff3:14bb
127.243.20.188 0:0:0:0:0:ffff:7ff3:14bc
127.243.20.189 0:0:0:0:0:ffff:7ff3:14bd
127.243.20.190 0:0:0:0:0:ffff:7ff3:14be
127.243.20.191 0:0:0:0:0:ffff:7ff3:14bf
127.243.20.192 0:0:0:0:0:ffff:7ff3:14c0
127.243.20.193 0:0:0:0:0:ffff:7ff3:14c1
127.243.20.194 0:0:0:0:0:ffff:7ff3:14c2
127.243.20.195 0:0:0:0:0:ffff:7ff3:14c3
127.243.20.196 0:0:0:0:0:ffff:7ff3:14c4
127.243.20.197 0:0:0:0:0:ffff:7ff3:14c5
127.243.20.198 0:0:0:0:0:ffff:7ff3:14c6
127.243.20.199 0:0:0:0:0:ffff:7ff3:14c7
127.243.20.200 0:0:0:0:0:ffff:7ff3:14c8
127.243.20.201 0:0:0:0:0:ffff:7ff3:14c9
127.243.20.202 0:0:0:0:0:ffff:7ff3:14ca
127.243.20.203 0:0:0:0:0:ffff:7ff3:14cb
127.243.20.204 0:0:0:0:0:ffff:7ff3:14cc
127.243.20.205 0:0:0:0:0:ffff:7ff3:14cd
127.243.20.206 0:0:0:0:0:ffff:7ff3:14ce
127.243.20.207 0:0:0:0:0:ffff:7ff3:14cf
127.243.20.208 0:0:0:0:0:ffff:7ff3:14d0
127.243.20.209 0:0:0:0:0:ffff:7ff3:14d1
127.243.20.210 0:0:0:0:0:ffff:7ff3:14d2
127.243.20.211 0:0:0:0:0:ffff:7ff3:14d3
127.243.20.212 0:0:0:0:0:ffff:7ff3:14d4
127.243.20.213 0:0:0:0:0:ffff:7ff3:14d5
127.243.20.214 0:0:0:0:0:ffff:7ff3:14d6
127.243.20.215 0:0:0:0:0:ffff:7ff3:14d7
127.243.20.216 0:0:0:0:0:ffff:7ff3:14d8
127.243.20.217 0:0:0:0:0:ffff:7ff3:14d9
127.243.20.218 0:0:0:0:0:ffff:7ff3:14da
127.243.20.219 0:0:0:0:0:ffff:7ff3:14db
127.243.20.220 0:0:0:0:0:ffff:7ff3:14dc
127.243.20.221 0:0:0:0:0:ffff:7ff3:14dd
127.243.20.222 0:0:0:0:0:ffff:7ff3:14de
127.243.20.223 0:0:0:0:0:ffff:7ff3:14df
127.243.20.224 0:0:0:0:0:ffff:7ff3:14e0
127.243.20.225 0:0:0:0:0:ffff:7ff3:14e1
127.243.20.226 0:0:0:0:0:ffff:7ff3:14e2
127.243.20.227 0:0:0:0:0:ffff:7ff3:14e3
127.243.20.228 0:0:0:0:0:ffff:7ff3:14e4
127.243.20.229 0:0:0:0:0:ffff:7ff3:14e5
127.243.20.230 0:0:0:0:0:ffff:7ff3:14e6
127.243.20.231 0:0:0:0:0:ffff:7ff3:14e7
127.243.20.232 0:0:0:0:0:ffff:7ff3:14e8
127.243.20.233 0:0:0:0:0:ffff:7ff3:14e9
127.243.20.234 0:0:0:0:0:ffff:7ff3:14ea
127.243.20.235 0:0:0:0:0:ffff:7ff3:14eb
127.243.20.236 0:0:0:0:0:ffff:7ff3:14ec
127.243.20.237 0:0:0:0:0:ffff:7ff3:14ed
127.243.20.238 0:0:0:0:0:ffff:7ff3:14ee
127.243.20.239 0:0:0:0:0:ffff:7ff3:14ef
127.243.20.240 0:0:0:0:0:ffff:7ff3:14f0
127.243.20.241 0:0:0:0:0:ffff:7ff3:14f1
127.243.20.242 0:0:0:0:0:ffff:7ff3:14f2
127.243.20.243 0:0:0:0:0:ffff:7ff3:14f3
127.243.20.244 0:0:0:0:0:ffff:7ff3:14f4
127.243.20.245 0:0:0:0:0:ffff:7ff3:14f5
127.243.20.246 0:0:0:0:0:ffff:7ff3:14f6
127.243.20.247 0:0:0:0:0:ffff:7ff3:14f7
127.243.20.248 0:0:0:0:0:ffff:7ff3:14f8
127.243.20.249 0:0:0:0:0:ffff:7ff3:14f9
127.243.20.250 0:0:0:0:0:ffff:7ff3:14fa
127.243.20.251 0:0:0:0:0:ffff:7ff3:14fb
127.243.20.252 0:0:0:0:0:ffff:7ff3:14fc
127.243.20.253 0:0:0:0:0:ffff:7ff3:14fd
127.243.20.254 0:0:0:0:0:ffff:7ff3:14fe
127.243.20.255 0:0:0:0:0:ffff:7ff3:14ff


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.