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
157.187.37.1 0:0:0:0:0:ffff:9dbb:2501
157.187.37.2 0:0:0:0:0:ffff:9dbb:2502
157.187.37.3 0:0:0:0:0:ffff:9dbb:2503
157.187.37.4 0:0:0:0:0:ffff:9dbb:2504
157.187.37.5 0:0:0:0:0:ffff:9dbb:2505
157.187.37.6 0:0:0:0:0:ffff:9dbb:2506
157.187.37.7 0:0:0:0:0:ffff:9dbb:2507
157.187.37.8 0:0:0:0:0:ffff:9dbb:2508
157.187.37.9 0:0:0:0:0:ffff:9dbb:2509
157.187.37.10 0:0:0:0:0:ffff:9dbb:250a
157.187.37.11 0:0:0:0:0:ffff:9dbb:250b
157.187.37.12 0:0:0:0:0:ffff:9dbb:250c
157.187.37.13 0:0:0:0:0:ffff:9dbb:250d
157.187.37.14 0:0:0:0:0:ffff:9dbb:250e
157.187.37.15 0:0:0:0:0:ffff:9dbb:250f
157.187.37.16 0:0:0:0:0:ffff:9dbb:2510
157.187.37.17 0:0:0:0:0:ffff:9dbb:2511
157.187.37.18 0:0:0:0:0:ffff:9dbb:2512
157.187.37.19 0:0:0:0:0:ffff:9dbb:2513
157.187.37.20 0:0:0:0:0:ffff:9dbb:2514
157.187.37.21 0:0:0:0:0:ffff:9dbb:2515
157.187.37.22 0:0:0:0:0:ffff:9dbb:2516
157.187.37.23 0:0:0:0:0:ffff:9dbb:2517
157.187.37.24 0:0:0:0:0:ffff:9dbb:2518
157.187.37.25 0:0:0:0:0:ffff:9dbb:2519
157.187.37.26 0:0:0:0:0:ffff:9dbb:251a
157.187.37.27 0:0:0:0:0:ffff:9dbb:251b
157.187.37.28 0:0:0:0:0:ffff:9dbb:251c
157.187.37.29 0:0:0:0:0:ffff:9dbb:251d
157.187.37.30 0:0:0:0:0:ffff:9dbb:251e
157.187.37.31 0:0:0:0:0:ffff:9dbb:251f
157.187.37.32 0:0:0:0:0:ffff:9dbb:2520
157.187.37.33 0:0:0:0:0:ffff:9dbb:2521
157.187.37.34 0:0:0:0:0:ffff:9dbb:2522
157.187.37.35 0:0:0:0:0:ffff:9dbb:2523
157.187.37.36 0:0:0:0:0:ffff:9dbb:2524
157.187.37.37 0:0:0:0:0:ffff:9dbb:2525
157.187.37.38 0:0:0:0:0:ffff:9dbb:2526
157.187.37.39 0:0:0:0:0:ffff:9dbb:2527
157.187.37.40 0:0:0:0:0:ffff:9dbb:2528
157.187.37.41 0:0:0:0:0:ffff:9dbb:2529
157.187.37.42 0:0:0:0:0:ffff:9dbb:252a
157.187.37.43 0:0:0:0:0:ffff:9dbb:252b
157.187.37.44 0:0:0:0:0:ffff:9dbb:252c
157.187.37.45 0:0:0:0:0:ffff:9dbb:252d
157.187.37.46 0:0:0:0:0:ffff:9dbb:252e
157.187.37.47 0:0:0:0:0:ffff:9dbb:252f
157.187.37.48 0:0:0:0:0:ffff:9dbb:2530
157.187.37.49 0:0:0:0:0:ffff:9dbb:2531
157.187.37.50 0:0:0:0:0:ffff:9dbb:2532
157.187.37.51 0:0:0:0:0:ffff:9dbb:2533
157.187.37.52 0:0:0:0:0:ffff:9dbb:2534
157.187.37.53 0:0:0:0:0:ffff:9dbb:2535
157.187.37.54 0:0:0:0:0:ffff:9dbb:2536
157.187.37.55 0:0:0:0:0:ffff:9dbb:2537
157.187.37.56 0:0:0:0:0:ffff:9dbb:2538
157.187.37.57 0:0:0:0:0:ffff:9dbb:2539
157.187.37.58 0:0:0:0:0:ffff:9dbb:253a
157.187.37.59 0:0:0:0:0:ffff:9dbb:253b
157.187.37.60 0:0:0:0:0:ffff:9dbb:253c


157.187.37.61 0:0:0:0:0:ffff:9dbb:253d
157.187.37.62 0:0:0:0:0:ffff:9dbb:253e
157.187.37.63 0:0:0:0:0:ffff:9dbb:253f
157.187.37.64 0:0:0:0:0:ffff:9dbb:2540
157.187.37.65 0:0:0:0:0:ffff:9dbb:2541
157.187.37.66 0:0:0:0:0:ffff:9dbb:2542
157.187.37.67 0:0:0:0:0:ffff:9dbb:2543
157.187.37.68 0:0:0:0:0:ffff:9dbb:2544
157.187.37.69 0:0:0:0:0:ffff:9dbb:2545
157.187.37.70 0:0:0:0:0:ffff:9dbb:2546
157.187.37.71 0:0:0:0:0:ffff:9dbb:2547
157.187.37.72 0:0:0:0:0:ffff:9dbb:2548
157.187.37.73 0:0:0:0:0:ffff:9dbb:2549
157.187.37.74 0:0:0:0:0:ffff:9dbb:254a
157.187.37.75 0:0:0:0:0:ffff:9dbb:254b
157.187.37.76 0:0:0:0:0:ffff:9dbb:254c
157.187.37.77 0:0:0:0:0:ffff:9dbb:254d
157.187.37.78 0:0:0:0:0:ffff:9dbb:254e
157.187.37.79 0:0:0:0:0:ffff:9dbb:254f
157.187.37.80 0:0:0:0:0:ffff:9dbb:2550
157.187.37.81 0:0:0:0:0:ffff:9dbb:2551
157.187.37.82 0:0:0:0:0:ffff:9dbb:2552
157.187.37.83 0:0:0:0:0:ffff:9dbb:2553
157.187.37.84 0:0:0:0:0:ffff:9dbb:2554
157.187.37.85 0:0:0:0:0:ffff:9dbb:2555
157.187.37.86 0:0:0:0:0:ffff:9dbb:2556
157.187.37.87 0:0:0:0:0:ffff:9dbb:2557
157.187.37.88 0:0:0:0:0:ffff:9dbb:2558
157.187.37.89 0:0:0:0:0:ffff:9dbb:2559
157.187.37.90 0:0:0:0:0:ffff:9dbb:255a
157.187.37.91 0:0:0:0:0:ffff:9dbb:255b
157.187.37.92 0:0:0:0:0:ffff:9dbb:255c
157.187.37.93 0:0:0:0:0:ffff:9dbb:255d
157.187.37.94 0:0:0:0:0:ffff:9dbb:255e
157.187.37.95 0:0:0:0:0:ffff:9dbb:255f
157.187.37.96 0:0:0:0:0:ffff:9dbb:2560
157.187.37.97 0:0:0:0:0:ffff:9dbb:2561
157.187.37.98 0:0:0:0:0:ffff:9dbb:2562
157.187.37.99 0:0:0:0:0:ffff:9dbb:2563
157.187.37.100 0:0:0:0:0:ffff:9dbb:2564
157.187.37.101 0:0:0:0:0:ffff:9dbb:2565
157.187.37.102 0:0:0:0:0:ffff:9dbb:2566
157.187.37.103 0:0:0:0:0:ffff:9dbb:2567
157.187.37.104 0:0:0:0:0:ffff:9dbb:2568
157.187.37.105 0:0:0:0:0:ffff:9dbb:2569
157.187.37.106 0:0:0:0:0:ffff:9dbb:256a
157.187.37.107 0:0:0:0:0:ffff:9dbb:256b
157.187.37.108 0:0:0:0:0:ffff:9dbb:256c
157.187.37.109 0:0:0:0:0:ffff:9dbb:256d
157.187.37.110 0:0:0:0:0:ffff:9dbb:256e
157.187.37.111 0:0:0:0:0:ffff:9dbb:256f
157.187.37.112 0:0:0:0:0:ffff:9dbb:2570
157.187.37.113 0:0:0:0:0:ffff:9dbb:2571
157.187.37.114 0:0:0:0:0:ffff:9dbb:2572
157.187.37.115 0:0:0:0:0:ffff:9dbb:2573
157.187.37.116 0:0:0:0:0:ffff:9dbb:2574
157.187.37.117 0:0:0:0:0:ffff:9dbb:2575
157.187.37.118 0:0:0:0:0:ffff:9dbb:2576
157.187.37.119 0:0:0:0:0:ffff:9dbb:2577
157.187.37.120 0:0:0:0:0:ffff:9dbb:2578


157.187.37.121 0:0:0:0:0:ffff:9dbb:2579
157.187.37.122 0:0:0:0:0:ffff:9dbb:257a
157.187.37.123 0:0:0:0:0:ffff:9dbb:257b
157.187.37.124 0:0:0:0:0:ffff:9dbb:257c
157.187.37.125 0:0:0:0:0:ffff:9dbb:257d
157.187.37.126 0:0:0:0:0:ffff:9dbb:257e
157.187.37.127 0:0:0:0:0:ffff:9dbb:257f
157.187.37.128 0:0:0:0:0:ffff:9dbb:2580
157.187.37.129 0:0:0:0:0:ffff:9dbb:2581
157.187.37.130 0:0:0:0:0:ffff:9dbb:2582
157.187.37.131 0:0:0:0:0:ffff:9dbb:2583
157.187.37.132 0:0:0:0:0:ffff:9dbb:2584
157.187.37.133 0:0:0:0:0:ffff:9dbb:2585
157.187.37.134 0:0:0:0:0:ffff:9dbb:2586
157.187.37.135 0:0:0:0:0:ffff:9dbb:2587
157.187.37.136 0:0:0:0:0:ffff:9dbb:2588
157.187.37.137 0:0:0:0:0:ffff:9dbb:2589
157.187.37.138 0:0:0:0:0:ffff:9dbb:258a
157.187.37.139 0:0:0:0:0:ffff:9dbb:258b
157.187.37.140 0:0:0:0:0:ffff:9dbb:258c
157.187.37.141 0:0:0:0:0:ffff:9dbb:258d
157.187.37.142 0:0:0:0:0:ffff:9dbb:258e
157.187.37.143 0:0:0:0:0:ffff:9dbb:258f
157.187.37.144 0:0:0:0:0:ffff:9dbb:2590
157.187.37.145 0:0:0:0:0:ffff:9dbb:2591
157.187.37.146 0:0:0:0:0:ffff:9dbb:2592
157.187.37.147 0:0:0:0:0:ffff:9dbb:2593
157.187.37.148 0:0:0:0:0:ffff:9dbb:2594
157.187.37.149 0:0:0:0:0:ffff:9dbb:2595
157.187.37.150 0:0:0:0:0:ffff:9dbb:2596
157.187.37.151 0:0:0:0:0:ffff:9dbb:2597
157.187.37.152 0:0:0:0:0:ffff:9dbb:2598
157.187.37.153 0:0:0:0:0:ffff:9dbb:2599
157.187.37.154 0:0:0:0:0:ffff:9dbb:259a
157.187.37.155 0:0:0:0:0:ffff:9dbb:259b
157.187.37.156 0:0:0:0:0:ffff:9dbb:259c
157.187.37.157 0:0:0:0:0:ffff:9dbb:259d
157.187.37.158 0:0:0:0:0:ffff:9dbb:259e
157.187.37.159 0:0:0:0:0:ffff:9dbb:259f
157.187.37.160 0:0:0:0:0:ffff:9dbb:25a0
157.187.37.161 0:0:0:0:0:ffff:9dbb:25a1
157.187.37.162 0:0:0:0:0:ffff:9dbb:25a2
157.187.37.163 0:0:0:0:0:ffff:9dbb:25a3
157.187.37.164 0:0:0:0:0:ffff:9dbb:25a4
157.187.37.165 0:0:0:0:0:ffff:9dbb:25a5
157.187.37.166 0:0:0:0:0:ffff:9dbb:25a6
157.187.37.167 0:0:0:0:0:ffff:9dbb:25a7
157.187.37.168 0:0:0:0:0:ffff:9dbb:25a8
157.187.37.169 0:0:0:0:0:ffff:9dbb:25a9
157.187.37.170 0:0:0:0:0:ffff:9dbb:25aa
157.187.37.171 0:0:0:0:0:ffff:9dbb:25ab
157.187.37.172 0:0:0:0:0:ffff:9dbb:25ac
157.187.37.173 0:0:0:0:0:ffff:9dbb:25ad
157.187.37.174 0:0:0:0:0:ffff:9dbb:25ae
157.187.37.175 0:0:0:0:0:ffff:9dbb:25af
157.187.37.176 0:0:0:0:0:ffff:9dbb:25b0
157.187.37.177 0:0:0:0:0:ffff:9dbb:25b1
157.187.37.178 0:0:0:0:0:ffff:9dbb:25b2
157.187.37.179 0:0:0:0:0:ffff:9dbb:25b3
157.187.37.180 0:0:0:0:0:ffff:9dbb:25b4


157.187.37.181 0:0:0:0:0:ffff:9dbb:25b5
157.187.37.182 0:0:0:0:0:ffff:9dbb:25b6
157.187.37.183 0:0:0:0:0:ffff:9dbb:25b7
157.187.37.184 0:0:0:0:0:ffff:9dbb:25b8
157.187.37.185 0:0:0:0:0:ffff:9dbb:25b9
157.187.37.186 0:0:0:0:0:ffff:9dbb:25ba
157.187.37.187 0:0:0:0:0:ffff:9dbb:25bb
157.187.37.188 0:0:0:0:0:ffff:9dbb:25bc
157.187.37.189 0:0:0:0:0:ffff:9dbb:25bd
157.187.37.190 0:0:0:0:0:ffff:9dbb:25be
157.187.37.191 0:0:0:0:0:ffff:9dbb:25bf
157.187.37.192 0:0:0:0:0:ffff:9dbb:25c0
157.187.37.193 0:0:0:0:0:ffff:9dbb:25c1
157.187.37.194 0:0:0:0:0:ffff:9dbb:25c2
157.187.37.195 0:0:0:0:0:ffff:9dbb:25c3
157.187.37.196 0:0:0:0:0:ffff:9dbb:25c4
157.187.37.197 0:0:0:0:0:ffff:9dbb:25c5
157.187.37.198 0:0:0:0:0:ffff:9dbb:25c6
157.187.37.199 0:0:0:0:0:ffff:9dbb:25c7
157.187.37.200 0:0:0:0:0:ffff:9dbb:25c8
157.187.37.201 0:0:0:0:0:ffff:9dbb:25c9
157.187.37.202 0:0:0:0:0:ffff:9dbb:25ca
157.187.37.203 0:0:0:0:0:ffff:9dbb:25cb
157.187.37.204 0:0:0:0:0:ffff:9dbb:25cc
157.187.37.205 0:0:0:0:0:ffff:9dbb:25cd
157.187.37.206 0:0:0:0:0:ffff:9dbb:25ce
157.187.37.207 0:0:0:0:0:ffff:9dbb:25cf
157.187.37.208 0:0:0:0:0:ffff:9dbb:25d0
157.187.37.209 0:0:0:0:0:ffff:9dbb:25d1
157.187.37.210 0:0:0:0:0:ffff:9dbb:25d2
157.187.37.211 0:0:0:0:0:ffff:9dbb:25d3
157.187.37.212 0:0:0:0:0:ffff:9dbb:25d4
157.187.37.213 0:0:0:0:0:ffff:9dbb:25d5
157.187.37.214 0:0:0:0:0:ffff:9dbb:25d6
157.187.37.215 0:0:0:0:0:ffff:9dbb:25d7
157.187.37.216 0:0:0:0:0:ffff:9dbb:25d8
157.187.37.217 0:0:0:0:0:ffff:9dbb:25d9
157.187.37.218 0:0:0:0:0:ffff:9dbb:25da
157.187.37.219 0:0:0:0:0:ffff:9dbb:25db
157.187.37.220 0:0:0:0:0:ffff:9dbb:25dc
157.187.37.221 0:0:0:0:0:ffff:9dbb:25dd
157.187.37.222 0:0:0:0:0:ffff:9dbb:25de
157.187.37.223 0:0:0:0:0:ffff:9dbb:25df
157.187.37.224 0:0:0:0:0:ffff:9dbb:25e0
157.187.37.225 0:0:0:0:0:ffff:9dbb:25e1
157.187.37.226 0:0:0:0:0:ffff:9dbb:25e2
157.187.37.227 0:0:0:0:0:ffff:9dbb:25e3
157.187.37.228 0:0:0:0:0:ffff:9dbb:25e4
157.187.37.229 0:0:0:0:0:ffff:9dbb:25e5
157.187.37.230 0:0:0:0:0:ffff:9dbb:25e6
157.187.37.231 0:0:0:0:0:ffff:9dbb:25e7
157.187.37.232 0:0:0:0:0:ffff:9dbb:25e8
157.187.37.233 0:0:0:0:0:ffff:9dbb:25e9
157.187.37.234 0:0:0:0:0:ffff:9dbb:25ea
157.187.37.235 0:0:0:0:0:ffff:9dbb:25eb
157.187.37.236 0:0:0:0:0:ffff:9dbb:25ec
157.187.37.237 0:0:0:0:0:ffff:9dbb:25ed
157.187.37.238 0:0:0:0:0:ffff:9dbb:25ee
157.187.37.239 0:0:0:0:0:ffff:9dbb:25ef
157.187.37.240 0:0:0:0:0:ffff:9dbb:25f0
157.187.37.241 0:0:0:0:0:ffff:9dbb:25f1
157.187.37.242 0:0:0:0:0:ffff:9dbb:25f2
157.187.37.243 0:0:0:0:0:ffff:9dbb:25f3
157.187.37.244 0:0:0:0:0:ffff:9dbb:25f4
157.187.37.245 0:0:0:0:0:ffff:9dbb:25f5
157.187.37.246 0:0:0:0:0:ffff:9dbb:25f6
157.187.37.247 0:0:0:0:0:ffff:9dbb:25f7
157.187.37.248 0:0:0:0:0:ffff:9dbb:25f8
157.187.37.249 0:0:0:0:0:ffff:9dbb:25f9
157.187.37.250 0:0:0:0:0:ffff:9dbb:25fa
157.187.37.251 0:0:0:0:0:ffff:9dbb:25fb
157.187.37.252 0:0:0:0:0:ffff:9dbb:25fc
157.187.37.253 0:0:0:0:0:ffff:9dbb:25fd
157.187.37.254 0:0:0:0:0:ffff:9dbb:25fe
157.187.37.255 0:0:0:0:0:ffff:9dbb: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.