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
15.1.37.1 0:0:0:0:0:ffff:f01:2501
15.1.37.2 0:0:0:0:0:ffff:f01:2502
15.1.37.3 0:0:0:0:0:ffff:f01:2503
15.1.37.4 0:0:0:0:0:ffff:f01:2504
15.1.37.5 0:0:0:0:0:ffff:f01:2505
15.1.37.6 0:0:0:0:0:ffff:f01:2506
15.1.37.7 0:0:0:0:0:ffff:f01:2507
15.1.37.8 0:0:0:0:0:ffff:f01:2508
15.1.37.9 0:0:0:0:0:ffff:f01:2509
15.1.37.10 0:0:0:0:0:ffff:f01:250a
15.1.37.11 0:0:0:0:0:ffff:f01:250b
15.1.37.12 0:0:0:0:0:ffff:f01:250c
15.1.37.13 0:0:0:0:0:ffff:f01:250d
15.1.37.14 0:0:0:0:0:ffff:f01:250e
15.1.37.15 0:0:0:0:0:ffff:f01:250f
15.1.37.16 0:0:0:0:0:ffff:f01:2510
15.1.37.17 0:0:0:0:0:ffff:f01:2511
15.1.37.18 0:0:0:0:0:ffff:f01:2512
15.1.37.19 0:0:0:0:0:ffff:f01:2513
15.1.37.20 0:0:0:0:0:ffff:f01:2514
15.1.37.21 0:0:0:0:0:ffff:f01:2515
15.1.37.22 0:0:0:0:0:ffff:f01:2516
15.1.37.23 0:0:0:0:0:ffff:f01:2517
15.1.37.24 0:0:0:0:0:ffff:f01:2518
15.1.37.25 0:0:0:0:0:ffff:f01:2519
15.1.37.26 0:0:0:0:0:ffff:f01:251a
15.1.37.27 0:0:0:0:0:ffff:f01:251b
15.1.37.28 0:0:0:0:0:ffff:f01:251c
15.1.37.29 0:0:0:0:0:ffff:f01:251d
15.1.37.30 0:0:0:0:0:ffff:f01:251e
15.1.37.31 0:0:0:0:0:ffff:f01:251f
15.1.37.32 0:0:0:0:0:ffff:f01:2520
15.1.37.33 0:0:0:0:0:ffff:f01:2521
15.1.37.34 0:0:0:0:0:ffff:f01:2522
15.1.37.35 0:0:0:0:0:ffff:f01:2523
15.1.37.36 0:0:0:0:0:ffff:f01:2524
15.1.37.37 0:0:0:0:0:ffff:f01:2525
15.1.37.38 0:0:0:0:0:ffff:f01:2526
15.1.37.39 0:0:0:0:0:ffff:f01:2527
15.1.37.40 0:0:0:0:0:ffff:f01:2528
15.1.37.41 0:0:0:0:0:ffff:f01:2529
15.1.37.42 0:0:0:0:0:ffff:f01:252a
15.1.37.43 0:0:0:0:0:ffff:f01:252b
15.1.37.44 0:0:0:0:0:ffff:f01:252c
15.1.37.45 0:0:0:0:0:ffff:f01:252d
15.1.37.46 0:0:0:0:0:ffff:f01:252e
15.1.37.47 0:0:0:0:0:ffff:f01:252f
15.1.37.48 0:0:0:0:0:ffff:f01:2530
15.1.37.49 0:0:0:0:0:ffff:f01:2531
15.1.37.50 0:0:0:0:0:ffff:f01:2532
15.1.37.51 0:0:0:0:0:ffff:f01:2533
15.1.37.52 0:0:0:0:0:ffff:f01:2534
15.1.37.53 0:0:0:0:0:ffff:f01:2535
15.1.37.54 0:0:0:0:0:ffff:f01:2536
15.1.37.55 0:0:0:0:0:ffff:f01:2537
15.1.37.56 0:0:0:0:0:ffff:f01:2538
15.1.37.57 0:0:0:0:0:ffff:f01:2539
15.1.37.58 0:0:0:0:0:ffff:f01:253a
15.1.37.59 0:0:0:0:0:ffff:f01:253b
15.1.37.60 0:0:0:0:0:ffff:f01:253c


15.1.37.61 0:0:0:0:0:ffff:f01:253d
15.1.37.62 0:0:0:0:0:ffff:f01:253e
15.1.37.63 0:0:0:0:0:ffff:f01:253f
15.1.37.64 0:0:0:0:0:ffff:f01:2540
15.1.37.65 0:0:0:0:0:ffff:f01:2541
15.1.37.66 0:0:0:0:0:ffff:f01:2542
15.1.37.67 0:0:0:0:0:ffff:f01:2543
15.1.37.68 0:0:0:0:0:ffff:f01:2544
15.1.37.69 0:0:0:0:0:ffff:f01:2545
15.1.37.70 0:0:0:0:0:ffff:f01:2546
15.1.37.71 0:0:0:0:0:ffff:f01:2547
15.1.37.72 0:0:0:0:0:ffff:f01:2548
15.1.37.73 0:0:0:0:0:ffff:f01:2549
15.1.37.74 0:0:0:0:0:ffff:f01:254a
15.1.37.75 0:0:0:0:0:ffff:f01:254b
15.1.37.76 0:0:0:0:0:ffff:f01:254c
15.1.37.77 0:0:0:0:0:ffff:f01:254d
15.1.37.78 0:0:0:0:0:ffff:f01:254e
15.1.37.79 0:0:0:0:0:ffff:f01:254f
15.1.37.80 0:0:0:0:0:ffff:f01:2550
15.1.37.81 0:0:0:0:0:ffff:f01:2551
15.1.37.82 0:0:0:0:0:ffff:f01:2552
15.1.37.83 0:0:0:0:0:ffff:f01:2553
15.1.37.84 0:0:0:0:0:ffff:f01:2554
15.1.37.85 0:0:0:0:0:ffff:f01:2555
15.1.37.86 0:0:0:0:0:ffff:f01:2556
15.1.37.87 0:0:0:0:0:ffff:f01:2557
15.1.37.88 0:0:0:0:0:ffff:f01:2558
15.1.37.89 0:0:0:0:0:ffff:f01:2559
15.1.37.90 0:0:0:0:0:ffff:f01:255a
15.1.37.91 0:0:0:0:0:ffff:f01:255b
15.1.37.92 0:0:0:0:0:ffff:f01:255c
15.1.37.93 0:0:0:0:0:ffff:f01:255d
15.1.37.94 0:0:0:0:0:ffff:f01:255e
15.1.37.95 0:0:0:0:0:ffff:f01:255f
15.1.37.96 0:0:0:0:0:ffff:f01:2560
15.1.37.97 0:0:0:0:0:ffff:f01:2561
15.1.37.98 0:0:0:0:0:ffff:f01:2562
15.1.37.99 0:0:0:0:0:ffff:f01:2563
15.1.37.100 0:0:0:0:0:ffff:f01:2564
15.1.37.101 0:0:0:0:0:ffff:f01:2565
15.1.37.102 0:0:0:0:0:ffff:f01:2566
15.1.37.103 0:0:0:0:0:ffff:f01:2567
15.1.37.104 0:0:0:0:0:ffff:f01:2568
15.1.37.105 0:0:0:0:0:ffff:f01:2569
15.1.37.106 0:0:0:0:0:ffff:f01:256a
15.1.37.107 0:0:0:0:0:ffff:f01:256b
15.1.37.108 0:0:0:0:0:ffff:f01:256c
15.1.37.109 0:0:0:0:0:ffff:f01:256d
15.1.37.110 0:0:0:0:0:ffff:f01:256e
15.1.37.111 0:0:0:0:0:ffff:f01:256f
15.1.37.112 0:0:0:0:0:ffff:f01:2570
15.1.37.113 0:0:0:0:0:ffff:f01:2571
15.1.37.114 0:0:0:0:0:ffff:f01:2572
15.1.37.115 0:0:0:0:0:ffff:f01:2573
15.1.37.116 0:0:0:0:0:ffff:f01:2574
15.1.37.117 0:0:0:0:0:ffff:f01:2575
15.1.37.118 0:0:0:0:0:ffff:f01:2576
15.1.37.119 0:0:0:0:0:ffff:f01:2577
15.1.37.120 0:0:0:0:0:ffff:f01:2578


15.1.37.121 0:0:0:0:0:ffff:f01:2579
15.1.37.122 0:0:0:0:0:ffff:f01:257a
15.1.37.123 0:0:0:0:0:ffff:f01:257b
15.1.37.124 0:0:0:0:0:ffff:f01:257c
15.1.37.125 0:0:0:0:0:ffff:f01:257d
15.1.37.126 0:0:0:0:0:ffff:f01:257e
15.1.37.127 0:0:0:0:0:ffff:f01:257f
15.1.37.128 0:0:0:0:0:ffff:f01:2580
15.1.37.129 0:0:0:0:0:ffff:f01:2581
15.1.37.130 0:0:0:0:0:ffff:f01:2582
15.1.37.131 0:0:0:0:0:ffff:f01:2583
15.1.37.132 0:0:0:0:0:ffff:f01:2584
15.1.37.133 0:0:0:0:0:ffff:f01:2585
15.1.37.134 0:0:0:0:0:ffff:f01:2586
15.1.37.135 0:0:0:0:0:ffff:f01:2587
15.1.37.136 0:0:0:0:0:ffff:f01:2588
15.1.37.137 0:0:0:0:0:ffff:f01:2589
15.1.37.138 0:0:0:0:0:ffff:f01:258a
15.1.37.139 0:0:0:0:0:ffff:f01:258b
15.1.37.140 0:0:0:0:0:ffff:f01:258c
15.1.37.141 0:0:0:0:0:ffff:f01:258d
15.1.37.142 0:0:0:0:0:ffff:f01:258e
15.1.37.143 0:0:0:0:0:ffff:f01:258f
15.1.37.144 0:0:0:0:0:ffff:f01:2590
15.1.37.145 0:0:0:0:0:ffff:f01:2591
15.1.37.146 0:0:0:0:0:ffff:f01:2592
15.1.37.147 0:0:0:0:0:ffff:f01:2593
15.1.37.148 0:0:0:0:0:ffff:f01:2594
15.1.37.149 0:0:0:0:0:ffff:f01:2595
15.1.37.150 0:0:0:0:0:ffff:f01:2596
15.1.37.151 0:0:0:0:0:ffff:f01:2597
15.1.37.152 0:0:0:0:0:ffff:f01:2598
15.1.37.153 0:0:0:0:0:ffff:f01:2599
15.1.37.154 0:0:0:0:0:ffff:f01:259a
15.1.37.155 0:0:0:0:0:ffff:f01:259b
15.1.37.156 0:0:0:0:0:ffff:f01:259c
15.1.37.157 0:0:0:0:0:ffff:f01:259d
15.1.37.158 0:0:0:0:0:ffff:f01:259e
15.1.37.159 0:0:0:0:0:ffff:f01:259f
15.1.37.160 0:0:0:0:0:ffff:f01:25a0
15.1.37.161 0:0:0:0:0:ffff:f01:25a1
15.1.37.162 0:0:0:0:0:ffff:f01:25a2
15.1.37.163 0:0:0:0:0:ffff:f01:25a3
15.1.37.164 0:0:0:0:0:ffff:f01:25a4
15.1.37.165 0:0:0:0:0:ffff:f01:25a5
15.1.37.166 0:0:0:0:0:ffff:f01:25a6
15.1.37.167 0:0:0:0:0:ffff:f01:25a7
15.1.37.168 0:0:0:0:0:ffff:f01:25a8
15.1.37.169 0:0:0:0:0:ffff:f01:25a9
15.1.37.170 0:0:0:0:0:ffff:f01:25aa
15.1.37.171 0:0:0:0:0:ffff:f01:25ab
15.1.37.172 0:0:0:0:0:ffff:f01:25ac
15.1.37.173 0:0:0:0:0:ffff:f01:25ad
15.1.37.174 0:0:0:0:0:ffff:f01:25ae
15.1.37.175 0:0:0:0:0:ffff:f01:25af
15.1.37.176 0:0:0:0:0:ffff:f01:25b0
15.1.37.177 0:0:0:0:0:ffff:f01:25b1
15.1.37.178 0:0:0:0:0:ffff:f01:25b2
15.1.37.179 0:0:0:0:0:ffff:f01:25b3
15.1.37.180 0:0:0:0:0:ffff:f01:25b4


15.1.37.181 0:0:0:0:0:ffff:f01:25b5
15.1.37.182 0:0:0:0:0:ffff:f01:25b6
15.1.37.183 0:0:0:0:0:ffff:f01:25b7
15.1.37.184 0:0:0:0:0:ffff:f01:25b8
15.1.37.185 0:0:0:0:0:ffff:f01:25b9
15.1.37.186 0:0:0:0:0:ffff:f01:25ba
15.1.37.187 0:0:0:0:0:ffff:f01:25bb
15.1.37.188 0:0:0:0:0:ffff:f01:25bc
15.1.37.189 0:0:0:0:0:ffff:f01:25bd
15.1.37.190 0:0:0:0:0:ffff:f01:25be
15.1.37.191 0:0:0:0:0:ffff:f01:25bf
15.1.37.192 0:0:0:0:0:ffff:f01:25c0
15.1.37.193 0:0:0:0:0:ffff:f01:25c1
15.1.37.194 0:0:0:0:0:ffff:f01:25c2
15.1.37.195 0:0:0:0:0:ffff:f01:25c3
15.1.37.196 0:0:0:0:0:ffff:f01:25c4
15.1.37.197 0:0:0:0:0:ffff:f01:25c5
15.1.37.198 0:0:0:0:0:ffff:f01:25c6
15.1.37.199 0:0:0:0:0:ffff:f01:25c7
15.1.37.200 0:0:0:0:0:ffff:f01:25c8
15.1.37.201 0:0:0:0:0:ffff:f01:25c9
15.1.37.202 0:0:0:0:0:ffff:f01:25ca
15.1.37.203 0:0:0:0:0:ffff:f01:25cb
15.1.37.204 0:0:0:0:0:ffff:f01:25cc
15.1.37.205 0:0:0:0:0:ffff:f01:25cd
15.1.37.206 0:0:0:0:0:ffff:f01:25ce
15.1.37.207 0:0:0:0:0:ffff:f01:25cf
15.1.37.208 0:0:0:0:0:ffff:f01:25d0
15.1.37.209 0:0:0:0:0:ffff:f01:25d1
15.1.37.210 0:0:0:0:0:ffff:f01:25d2
15.1.37.211 0:0:0:0:0:ffff:f01:25d3
15.1.37.212 0:0:0:0:0:ffff:f01:25d4
15.1.37.213 0:0:0:0:0:ffff:f01:25d5
15.1.37.214 0:0:0:0:0:ffff:f01:25d6
15.1.37.215 0:0:0:0:0:ffff:f01:25d7
15.1.37.216 0:0:0:0:0:ffff:f01:25d8
15.1.37.217 0:0:0:0:0:ffff:f01:25d9
15.1.37.218 0:0:0:0:0:ffff:f01:25da
15.1.37.219 0:0:0:0:0:ffff:f01:25db
15.1.37.220 0:0:0:0:0:ffff:f01:25dc
15.1.37.221 0:0:0:0:0:ffff:f01:25dd
15.1.37.222 0:0:0:0:0:ffff:f01:25de
15.1.37.223 0:0:0:0:0:ffff:f01:25df
15.1.37.224 0:0:0:0:0:ffff:f01:25e0
15.1.37.225 0:0:0:0:0:ffff:f01:25e1
15.1.37.226 0:0:0:0:0:ffff:f01:25e2
15.1.37.227 0:0:0:0:0:ffff:f01:25e3
15.1.37.228 0:0:0:0:0:ffff:f01:25e4
15.1.37.229 0:0:0:0:0:ffff:f01:25e5
15.1.37.230 0:0:0:0:0:ffff:f01:25e6
15.1.37.231 0:0:0:0:0:ffff:f01:25e7
15.1.37.232 0:0:0:0:0:ffff:f01:25e8
15.1.37.233 0:0:0:0:0:ffff:f01:25e9
15.1.37.234 0:0:0:0:0:ffff:f01:25ea
15.1.37.235 0:0:0:0:0:ffff:f01:25eb
15.1.37.236 0:0:0:0:0:ffff:f01:25ec
15.1.37.237 0:0:0:0:0:ffff:f01:25ed
15.1.37.238 0:0:0:0:0:ffff:f01:25ee
15.1.37.239 0:0:0:0:0:ffff:f01:25ef
15.1.37.240 0:0:0:0:0:ffff:f01:25f0
15.1.37.241 0:0:0:0:0:ffff:f01:25f1
15.1.37.242 0:0:0:0:0:ffff:f01:25f2
15.1.37.243 0:0:0:0:0:ffff:f01:25f3
15.1.37.244 0:0:0:0:0:ffff:f01:25f4
15.1.37.245 0:0:0:0:0:ffff:f01:25f5
15.1.37.246 0:0:0:0:0:ffff:f01:25f6
15.1.37.247 0:0:0:0:0:ffff:f01:25f7
15.1.37.248 0:0:0:0:0:ffff:f01:25f8
15.1.37.249 0:0:0:0:0:ffff:f01:25f9
15.1.37.250 0:0:0:0:0:ffff:f01:25fa
15.1.37.251 0:0:0:0:0:ffff:f01:25fb
15.1.37.252 0:0:0:0:0:ffff:f01:25fc
15.1.37.253 0:0:0:0:0:ffff:f01:25fd
15.1.37.254 0:0:0:0:0:ffff:f01:25fe
15.1.37.255 0:0:0:0:0:ffff:f01:25ff


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.