ip
ipku.in

IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

$ ipcalc
Try:192.168.1.10/2410.0.0.0/8172.16.5.4/20203.0.113.9/29
IPv6 calculator →
private IP (RFC 1918)10.52.32.0/25
network10.52.32.0/25
broadcast10.52.32.127
first host10.52.32.1
last host10.52.32.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.52.32.0/25
address00001010.00110100.00100000.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00110100.00100000.00000000
broadcast00001010.00110100.00100000.01111111
green = network part, grey = host part
hex0x0a342000
decimal171188224
reverse dns0.32.52.10.in-addr.arpa
ipv4-mapped::ffff:a34:2000

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.52.32.0/3210.52.32.0 – 10.52.32.010.52.32.0
210.52.32.1/3210.52.32.1 – 10.52.32.110.52.32.1
310.52.32.2/3210.52.32.2 – 10.52.32.210.52.32.2
410.52.32.3/3210.52.32.3 – 10.52.32.310.52.32.3
510.52.32.4/3210.52.32.4 – 10.52.32.410.52.32.4
610.52.32.5/3210.52.32.5 – 10.52.32.510.52.32.5
710.52.32.6/3210.52.32.6 – 10.52.32.610.52.32.6
810.52.32.7/3210.52.32.7 – 10.52.32.710.52.32.7
910.52.32.8/3210.52.32.8 – 10.52.32.810.52.32.8
1010.52.32.9/3210.52.32.9 – 10.52.32.910.52.32.9
1110.52.32.10/3210.52.32.10 – 10.52.32.1010.52.32.10
1210.52.32.11/3210.52.32.11 – 10.52.32.1110.52.32.11
1310.52.32.12/3210.52.32.12 – 10.52.32.1210.52.32.12
1410.52.32.13/3210.52.32.13 – 10.52.32.1310.52.32.13
1510.52.32.14/3210.52.32.14 – 10.52.32.1410.52.32.14
1610.52.32.15/3210.52.32.15 – 10.52.32.1510.52.32.15
1710.52.32.16/3210.52.32.16 – 10.52.32.1610.52.32.16
1810.52.32.17/3210.52.32.17 – 10.52.32.1710.52.32.17
1910.52.32.18/3210.52.32.18 – 10.52.32.1810.52.32.18
2010.52.32.19/3210.52.32.19 – 10.52.32.1910.52.32.19
2110.52.32.20/3210.52.32.20 – 10.52.32.2010.52.32.20
2210.52.32.21/3210.52.32.21 – 10.52.32.2110.52.32.21
2310.52.32.22/3210.52.32.22 – 10.52.32.2210.52.32.22
2410.52.32.23/3210.52.32.23 – 10.52.32.2310.52.32.23
2510.52.32.24/3210.52.32.24 – 10.52.32.2410.52.32.24
2610.52.32.25/3210.52.32.25 – 10.52.32.2510.52.32.25
2710.52.32.26/3210.52.32.26 – 10.52.32.2610.52.32.26
2810.52.32.27/3210.52.32.27 – 10.52.32.2710.52.32.27
2910.52.32.28/3210.52.32.28 – 10.52.32.2810.52.32.28
3010.52.32.29/3210.52.32.29 – 10.52.32.2910.52.32.29
3110.52.32.30/3210.52.32.30 – 10.52.32.3010.52.32.30
3210.52.32.31/3210.52.32.31 – 10.52.32.3110.52.32.31
3310.52.32.32/3210.52.32.32 – 10.52.32.3210.52.32.32
3410.52.32.33/3210.52.32.33 – 10.52.32.3310.52.32.33
3510.52.32.34/3210.52.32.34 – 10.52.32.3410.52.32.34
3610.52.32.35/3210.52.32.35 – 10.52.32.3510.52.32.35
3710.52.32.36/3210.52.32.36 – 10.52.32.3610.52.32.36
3810.52.32.37/3210.52.32.37 – 10.52.32.3710.52.32.37
3910.52.32.38/3210.52.32.38 – 10.52.32.3810.52.32.38
4010.52.32.39/3210.52.32.39 – 10.52.32.3910.52.32.39
4110.52.32.40/3210.52.32.40 – 10.52.32.4010.52.32.40
4210.52.32.41/3210.52.32.41 – 10.52.32.4110.52.32.41
4310.52.32.42/3210.52.32.42 – 10.52.32.4210.52.32.42
4410.52.32.43/3210.52.32.43 – 10.52.32.4310.52.32.43
4510.52.32.44/3210.52.32.44 – 10.52.32.4410.52.32.44
4610.52.32.45/3210.52.32.45 – 10.52.32.4510.52.32.45
4710.52.32.46/3210.52.32.46 – 10.52.32.4610.52.32.46
4810.52.32.47/3210.52.32.47 – 10.52.32.4710.52.32.47
4910.52.32.48/3210.52.32.48 – 10.52.32.4810.52.32.48
5010.52.32.49/3210.52.32.49 – 10.52.32.4910.52.32.49
5110.52.32.50/3210.52.32.50 – 10.52.32.5010.52.32.50
5210.52.32.51/3210.52.32.51 – 10.52.32.5110.52.32.51
5310.52.32.52/3210.52.32.52 – 10.52.32.5210.52.32.52
5410.52.32.53/3210.52.32.53 – 10.52.32.5310.52.32.53
5510.52.32.54/3210.52.32.54 – 10.52.32.5410.52.32.54
5610.52.32.55/3210.52.32.55 – 10.52.32.5510.52.32.55
5710.52.32.56/3210.52.32.56 – 10.52.32.5610.52.32.56
5810.52.32.57/3210.52.32.57 – 10.52.32.5710.52.32.57
5910.52.32.58/3210.52.32.58 – 10.52.32.5810.52.32.58
6010.52.32.59/3210.52.32.59 – 10.52.32.5910.52.32.59
6110.52.32.60/3210.52.32.60 – 10.52.32.6010.52.32.60
6210.52.32.61/3210.52.32.61 – 10.52.32.6110.52.32.61
6310.52.32.62/3210.52.32.62 – 10.52.32.6210.52.32.62
6410.52.32.63/3210.52.32.63 – 10.52.32.6310.52.32.63
6510.52.32.64/3210.52.32.64 – 10.52.32.6410.52.32.64
6610.52.32.65/3210.52.32.65 – 10.52.32.6510.52.32.65
6710.52.32.66/3210.52.32.66 – 10.52.32.6610.52.32.66
6810.52.32.67/3210.52.32.67 – 10.52.32.6710.52.32.67
6910.52.32.68/3210.52.32.68 – 10.52.32.6810.52.32.68
7010.52.32.69/3210.52.32.69 – 10.52.32.6910.52.32.69
7110.52.32.70/3210.52.32.70 – 10.52.32.7010.52.32.70
7210.52.32.71/3210.52.32.71 – 10.52.32.7110.52.32.71
7310.52.32.72/3210.52.32.72 – 10.52.32.7210.52.32.72
7410.52.32.73/3210.52.32.73 – 10.52.32.7310.52.32.73
7510.52.32.74/3210.52.32.74 – 10.52.32.7410.52.32.74
7610.52.32.75/3210.52.32.75 – 10.52.32.7510.52.32.75
7710.52.32.76/3210.52.32.76 – 10.52.32.7610.52.32.76
7810.52.32.77/3210.52.32.77 – 10.52.32.7710.52.32.77
7910.52.32.78/3210.52.32.78 – 10.52.32.7810.52.32.78
8010.52.32.79/3210.52.32.79 – 10.52.32.7910.52.32.79
8110.52.32.80/3210.52.32.80 – 10.52.32.8010.52.32.80
8210.52.32.81/3210.52.32.81 – 10.52.32.8110.52.32.81
8310.52.32.82/3210.52.32.82 – 10.52.32.8210.52.32.82
8410.52.32.83/3210.52.32.83 – 10.52.32.8310.52.32.83
8510.52.32.84/3210.52.32.84 – 10.52.32.8410.52.32.84
8610.52.32.85/3210.52.32.85 – 10.52.32.8510.52.32.85
8710.52.32.86/3210.52.32.86 – 10.52.32.8610.52.32.86
8810.52.32.87/3210.52.32.87 – 10.52.32.8710.52.32.87
8910.52.32.88/3210.52.32.88 – 10.52.32.8810.52.32.88
9010.52.32.89/3210.52.32.89 – 10.52.32.8910.52.32.89
9110.52.32.90/3210.52.32.90 – 10.52.32.9010.52.32.90
9210.52.32.91/3210.52.32.91 – 10.52.32.9110.52.32.91
9310.52.32.92/3210.52.32.92 – 10.52.32.9210.52.32.92
9410.52.32.93/3210.52.32.93 – 10.52.32.9310.52.32.93
9510.52.32.94/3210.52.32.94 – 10.52.32.9410.52.32.94
9610.52.32.95/3210.52.32.95 – 10.52.32.9510.52.32.95
9710.52.32.96/3210.52.32.96 – 10.52.32.9610.52.32.96
9810.52.32.97/3210.52.32.97 – 10.52.32.9710.52.32.97
9910.52.32.98/3210.52.32.98 – 10.52.32.9810.52.32.98
10010.52.32.99/3210.52.32.99 – 10.52.32.9910.52.32.99
10110.52.32.100/3210.52.32.100 – 10.52.32.10010.52.32.100
10210.52.32.101/3210.52.32.101 – 10.52.32.10110.52.32.101
10310.52.32.102/3210.52.32.102 – 10.52.32.10210.52.32.102
10410.52.32.103/3210.52.32.103 – 10.52.32.10310.52.32.103
10510.52.32.104/3210.52.32.104 – 10.52.32.10410.52.32.104
10610.52.32.105/3210.52.32.105 – 10.52.32.10510.52.32.105
10710.52.32.106/3210.52.32.106 – 10.52.32.10610.52.32.106
10810.52.32.107/3210.52.32.107 – 10.52.32.10710.52.32.107
10910.52.32.108/3210.52.32.108 – 10.52.32.10810.52.32.108
11010.52.32.109/3210.52.32.109 – 10.52.32.10910.52.32.109
11110.52.32.110/3210.52.32.110 – 10.52.32.11010.52.32.110
11210.52.32.111/3210.52.32.111 – 10.52.32.11110.52.32.111
11310.52.32.112/3210.52.32.112 – 10.52.32.11210.52.32.112
11410.52.32.113/3210.52.32.113 – 10.52.32.11310.52.32.113
11510.52.32.114/3210.52.32.114 – 10.52.32.11410.52.32.114
11610.52.32.115/3210.52.32.115 – 10.52.32.11510.52.32.115
11710.52.32.116/3210.52.32.116 – 10.52.32.11610.52.32.116
11810.52.32.117/3210.52.32.117 – 10.52.32.11710.52.32.117
11910.52.32.118/3210.52.32.118 – 10.52.32.11810.52.32.118
12010.52.32.119/3210.52.32.119 – 10.52.32.11910.52.32.119
12110.52.32.120/3210.52.32.120 – 10.52.32.12010.52.32.120
12210.52.32.121/3210.52.32.121 – 10.52.32.12110.52.32.121
12310.52.32.122/3210.52.32.122 – 10.52.32.12210.52.32.122
12410.52.32.123/3210.52.32.123 – 10.52.32.12310.52.32.123
12510.52.32.124/3210.52.32.124 – 10.52.32.12410.52.32.124
12610.52.32.125/3210.52.32.125 – 10.52.32.12510.52.32.125
12710.52.32.126/3210.52.32.126 – 10.52.32.12610.52.32.126
12810.52.32.127/3210.52.32.127 – 10.52.32.12710.52.32.127
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /25
/00.0.0.04,294,967,2964,294,967,294-
/1128.0.0.02,147,483,6482,147,483,646-
/2192.0.0.01,073,741,8241,073,741,822-
/3224.0.0.0536,870,912536,870,910-
/4240.0.0.0268,435,456268,435,454-
/5248.0.0.0134,217,728134,217,726-
/6252.0.0.067,108,86467,108,862-
/7254.0.0.033,554,43233,554,430-
/8255.0.0.016,777,21616,777,214-
/9255.128.0.08,388,6088,388,606-
/10255.192.0.04,194,3044,194,302-
/11255.224.0.02,097,1522,097,150-
/12255.240.0.01,048,5761,048,574-
/13255.248.0.0524,288524,286-
/14255.252.0.0262,144262,142-
/15255.254.0.0131,072131,070-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,382-
/19255.255.224.08,1928,190-
/20255.255.240.04,0964,094-
/21255.255.248.02,0482,046-
/22255.255.252.01,0241,022-
/23255.255.254.0512510-
/24255.255.255.0256254-
/25255.255.255.1281281261
/26255.255.255.19264622 split →
/27255.255.255.22432304 split →
/28255.255.255.24016148 split →
/29255.255.255.2488616 split →
/30255.255.255.2524232 split →
/31255.255.255.2542264 split →
/32255.255.255.25511128 split →
02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →