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)10.2.162.0/25
network10.2.162.0/25
broadcast10.2.162.127
first host10.2.162.1
last host10.2.162.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.2.162.0/25
address00001010.00000010.10100010.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00000010.10100010.00000000
broadcast00001010.00000010.10100010.01111111
green = network part, grey = host part
hex0x0a02a200
decimal167944704
reverse dns0.162.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:a200

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.162.0/3210.2.162.0 – 10.2.162.010.2.162.0
210.2.162.1/3210.2.162.1 – 10.2.162.110.2.162.1
310.2.162.2/3210.2.162.2 – 10.2.162.210.2.162.2
410.2.162.3/3210.2.162.3 – 10.2.162.310.2.162.3
510.2.162.4/3210.2.162.4 – 10.2.162.410.2.162.4
610.2.162.5/3210.2.162.5 – 10.2.162.510.2.162.5
710.2.162.6/3210.2.162.6 – 10.2.162.610.2.162.6
810.2.162.7/3210.2.162.7 – 10.2.162.710.2.162.7
910.2.162.8/3210.2.162.8 – 10.2.162.810.2.162.8
1010.2.162.9/3210.2.162.9 – 10.2.162.910.2.162.9
1110.2.162.10/3210.2.162.10 – 10.2.162.1010.2.162.10
1210.2.162.11/3210.2.162.11 – 10.2.162.1110.2.162.11
1310.2.162.12/3210.2.162.12 – 10.2.162.1210.2.162.12
1410.2.162.13/3210.2.162.13 – 10.2.162.1310.2.162.13
1510.2.162.14/3210.2.162.14 – 10.2.162.1410.2.162.14
1610.2.162.15/3210.2.162.15 – 10.2.162.1510.2.162.15
1710.2.162.16/3210.2.162.16 – 10.2.162.1610.2.162.16
1810.2.162.17/3210.2.162.17 – 10.2.162.1710.2.162.17
1910.2.162.18/3210.2.162.18 – 10.2.162.1810.2.162.18
2010.2.162.19/3210.2.162.19 – 10.2.162.1910.2.162.19
2110.2.162.20/3210.2.162.20 – 10.2.162.2010.2.162.20
2210.2.162.21/3210.2.162.21 – 10.2.162.2110.2.162.21
2310.2.162.22/3210.2.162.22 – 10.2.162.2210.2.162.22
2410.2.162.23/3210.2.162.23 – 10.2.162.2310.2.162.23
2510.2.162.24/3210.2.162.24 – 10.2.162.2410.2.162.24
2610.2.162.25/3210.2.162.25 – 10.2.162.2510.2.162.25
2710.2.162.26/3210.2.162.26 – 10.2.162.2610.2.162.26
2810.2.162.27/3210.2.162.27 – 10.2.162.2710.2.162.27
2910.2.162.28/3210.2.162.28 – 10.2.162.2810.2.162.28
3010.2.162.29/3210.2.162.29 – 10.2.162.2910.2.162.29
3110.2.162.30/3210.2.162.30 – 10.2.162.3010.2.162.30
3210.2.162.31/3210.2.162.31 – 10.2.162.3110.2.162.31
3310.2.162.32/3210.2.162.32 – 10.2.162.3210.2.162.32
3410.2.162.33/3210.2.162.33 – 10.2.162.3310.2.162.33
3510.2.162.34/3210.2.162.34 – 10.2.162.3410.2.162.34
3610.2.162.35/3210.2.162.35 – 10.2.162.3510.2.162.35
3710.2.162.36/3210.2.162.36 – 10.2.162.3610.2.162.36
3810.2.162.37/3210.2.162.37 – 10.2.162.3710.2.162.37
3910.2.162.38/3210.2.162.38 – 10.2.162.3810.2.162.38
4010.2.162.39/3210.2.162.39 – 10.2.162.3910.2.162.39
4110.2.162.40/3210.2.162.40 – 10.2.162.4010.2.162.40
4210.2.162.41/3210.2.162.41 – 10.2.162.4110.2.162.41
4310.2.162.42/3210.2.162.42 – 10.2.162.4210.2.162.42
4410.2.162.43/3210.2.162.43 – 10.2.162.4310.2.162.43
4510.2.162.44/3210.2.162.44 – 10.2.162.4410.2.162.44
4610.2.162.45/3210.2.162.45 – 10.2.162.4510.2.162.45
4710.2.162.46/3210.2.162.46 – 10.2.162.4610.2.162.46
4810.2.162.47/3210.2.162.47 – 10.2.162.4710.2.162.47
4910.2.162.48/3210.2.162.48 – 10.2.162.4810.2.162.48
5010.2.162.49/3210.2.162.49 – 10.2.162.4910.2.162.49
5110.2.162.50/3210.2.162.50 – 10.2.162.5010.2.162.50
5210.2.162.51/3210.2.162.51 – 10.2.162.5110.2.162.51
5310.2.162.52/3210.2.162.52 – 10.2.162.5210.2.162.52
5410.2.162.53/3210.2.162.53 – 10.2.162.5310.2.162.53
5510.2.162.54/3210.2.162.54 – 10.2.162.5410.2.162.54
5610.2.162.55/3210.2.162.55 – 10.2.162.5510.2.162.55
5710.2.162.56/3210.2.162.56 – 10.2.162.5610.2.162.56
5810.2.162.57/3210.2.162.57 – 10.2.162.5710.2.162.57
5910.2.162.58/3210.2.162.58 – 10.2.162.5810.2.162.58
6010.2.162.59/3210.2.162.59 – 10.2.162.5910.2.162.59
6110.2.162.60/3210.2.162.60 – 10.2.162.6010.2.162.60
6210.2.162.61/3210.2.162.61 – 10.2.162.6110.2.162.61
6310.2.162.62/3210.2.162.62 – 10.2.162.6210.2.162.62
6410.2.162.63/3210.2.162.63 – 10.2.162.6310.2.162.63
6510.2.162.64/3210.2.162.64 – 10.2.162.6410.2.162.64
6610.2.162.65/3210.2.162.65 – 10.2.162.6510.2.162.65
6710.2.162.66/3210.2.162.66 – 10.2.162.6610.2.162.66
6810.2.162.67/3210.2.162.67 – 10.2.162.6710.2.162.67
6910.2.162.68/3210.2.162.68 – 10.2.162.6810.2.162.68
7010.2.162.69/3210.2.162.69 – 10.2.162.6910.2.162.69
7110.2.162.70/3210.2.162.70 – 10.2.162.7010.2.162.70
7210.2.162.71/3210.2.162.71 – 10.2.162.7110.2.162.71
7310.2.162.72/3210.2.162.72 – 10.2.162.7210.2.162.72
7410.2.162.73/3210.2.162.73 – 10.2.162.7310.2.162.73
7510.2.162.74/3210.2.162.74 – 10.2.162.7410.2.162.74
7610.2.162.75/3210.2.162.75 – 10.2.162.7510.2.162.75
7710.2.162.76/3210.2.162.76 – 10.2.162.7610.2.162.76
7810.2.162.77/3210.2.162.77 – 10.2.162.7710.2.162.77
7910.2.162.78/3210.2.162.78 – 10.2.162.7810.2.162.78
8010.2.162.79/3210.2.162.79 – 10.2.162.7910.2.162.79
8110.2.162.80/3210.2.162.80 – 10.2.162.8010.2.162.80
8210.2.162.81/3210.2.162.81 – 10.2.162.8110.2.162.81
8310.2.162.82/3210.2.162.82 – 10.2.162.8210.2.162.82
8410.2.162.83/3210.2.162.83 – 10.2.162.8310.2.162.83
8510.2.162.84/3210.2.162.84 – 10.2.162.8410.2.162.84
8610.2.162.85/3210.2.162.85 – 10.2.162.8510.2.162.85
8710.2.162.86/3210.2.162.86 – 10.2.162.8610.2.162.86
8810.2.162.87/3210.2.162.87 – 10.2.162.8710.2.162.87
8910.2.162.88/3210.2.162.88 – 10.2.162.8810.2.162.88
9010.2.162.89/3210.2.162.89 – 10.2.162.8910.2.162.89
9110.2.162.90/3210.2.162.90 – 10.2.162.9010.2.162.90
9210.2.162.91/3210.2.162.91 – 10.2.162.9110.2.162.91
9310.2.162.92/3210.2.162.92 – 10.2.162.9210.2.162.92
9410.2.162.93/3210.2.162.93 – 10.2.162.9310.2.162.93
9510.2.162.94/3210.2.162.94 – 10.2.162.9410.2.162.94
9610.2.162.95/3210.2.162.95 – 10.2.162.9510.2.162.95
9710.2.162.96/3210.2.162.96 – 10.2.162.9610.2.162.96
9810.2.162.97/3210.2.162.97 – 10.2.162.9710.2.162.97
9910.2.162.98/3210.2.162.98 – 10.2.162.9810.2.162.98
10010.2.162.99/3210.2.162.99 – 10.2.162.9910.2.162.99
10110.2.162.100/3210.2.162.100 – 10.2.162.10010.2.162.100
10210.2.162.101/3210.2.162.101 – 10.2.162.10110.2.162.101
10310.2.162.102/3210.2.162.102 – 10.2.162.10210.2.162.102
10410.2.162.103/3210.2.162.103 – 10.2.162.10310.2.162.103
10510.2.162.104/3210.2.162.104 – 10.2.162.10410.2.162.104
10610.2.162.105/3210.2.162.105 – 10.2.162.10510.2.162.105
10710.2.162.106/3210.2.162.106 – 10.2.162.10610.2.162.106
10810.2.162.107/3210.2.162.107 – 10.2.162.10710.2.162.107
10910.2.162.108/3210.2.162.108 – 10.2.162.10810.2.162.108
11010.2.162.109/3210.2.162.109 – 10.2.162.10910.2.162.109
11110.2.162.110/3210.2.162.110 – 10.2.162.11010.2.162.110
11210.2.162.111/3210.2.162.111 – 10.2.162.11110.2.162.111
11310.2.162.112/3210.2.162.112 – 10.2.162.11210.2.162.112
11410.2.162.113/3210.2.162.113 – 10.2.162.11310.2.162.113
11510.2.162.114/3210.2.162.114 – 10.2.162.11410.2.162.114
11610.2.162.115/3210.2.162.115 – 10.2.162.11510.2.162.115
11710.2.162.116/3210.2.162.116 – 10.2.162.11610.2.162.116
11810.2.162.117/3210.2.162.117 – 10.2.162.11710.2.162.117
11910.2.162.118/3210.2.162.118 – 10.2.162.11810.2.162.118
12010.2.162.119/3210.2.162.119 – 10.2.162.11910.2.162.119
12110.2.162.120/3210.2.162.120 – 10.2.162.12010.2.162.120
12210.2.162.121/3210.2.162.121 – 10.2.162.12110.2.162.121
12310.2.162.122/3210.2.162.122 – 10.2.162.12210.2.162.122
12410.2.162.123/3210.2.162.123 – 10.2.162.12310.2.162.123
12510.2.162.124/3210.2.162.124 – 10.2.162.12410.2.162.124
12610.2.162.125/3210.2.162.125 – 10.2.162.12510.2.162.125
12710.2.162.126/3210.2.162.126 – 10.2.162.12610.2.162.126
12810.2.162.127/3210.2.162.127 – 10.2.162.12710.2.162.127
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 →