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)10.2.150.0/25
network10.2.150.0/25
broadcast10.2.150.127
first host10.2.150.1
last host10.2.150.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.2.150.0/25
address00001010.00000010.10010110.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00000010.10010110.00000000
broadcast00001010.00000010.10010110.01111111
green = network part, grey = host part
hex0x0a029600
decimal167941632
reverse dns0.150.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:9600

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.150.0/3210.2.150.0 – 10.2.150.010.2.150.0
210.2.150.1/3210.2.150.1 – 10.2.150.110.2.150.1
310.2.150.2/3210.2.150.2 – 10.2.150.210.2.150.2
410.2.150.3/3210.2.150.3 – 10.2.150.310.2.150.3
510.2.150.4/3210.2.150.4 – 10.2.150.410.2.150.4
610.2.150.5/3210.2.150.5 – 10.2.150.510.2.150.5
710.2.150.6/3210.2.150.6 – 10.2.150.610.2.150.6
810.2.150.7/3210.2.150.7 – 10.2.150.710.2.150.7
910.2.150.8/3210.2.150.8 – 10.2.150.810.2.150.8
1010.2.150.9/3210.2.150.9 – 10.2.150.910.2.150.9
1110.2.150.10/3210.2.150.10 – 10.2.150.1010.2.150.10
1210.2.150.11/3210.2.150.11 – 10.2.150.1110.2.150.11
1310.2.150.12/3210.2.150.12 – 10.2.150.1210.2.150.12
1410.2.150.13/3210.2.150.13 – 10.2.150.1310.2.150.13
1510.2.150.14/3210.2.150.14 – 10.2.150.1410.2.150.14
1610.2.150.15/3210.2.150.15 – 10.2.150.1510.2.150.15
1710.2.150.16/3210.2.150.16 – 10.2.150.1610.2.150.16
1810.2.150.17/3210.2.150.17 – 10.2.150.1710.2.150.17
1910.2.150.18/3210.2.150.18 – 10.2.150.1810.2.150.18
2010.2.150.19/3210.2.150.19 – 10.2.150.1910.2.150.19
2110.2.150.20/3210.2.150.20 – 10.2.150.2010.2.150.20
2210.2.150.21/3210.2.150.21 – 10.2.150.2110.2.150.21
2310.2.150.22/3210.2.150.22 – 10.2.150.2210.2.150.22
2410.2.150.23/3210.2.150.23 – 10.2.150.2310.2.150.23
2510.2.150.24/3210.2.150.24 – 10.2.150.2410.2.150.24
2610.2.150.25/3210.2.150.25 – 10.2.150.2510.2.150.25
2710.2.150.26/3210.2.150.26 – 10.2.150.2610.2.150.26
2810.2.150.27/3210.2.150.27 – 10.2.150.2710.2.150.27
2910.2.150.28/3210.2.150.28 – 10.2.150.2810.2.150.28
3010.2.150.29/3210.2.150.29 – 10.2.150.2910.2.150.29
3110.2.150.30/3210.2.150.30 – 10.2.150.3010.2.150.30
3210.2.150.31/3210.2.150.31 – 10.2.150.3110.2.150.31
3310.2.150.32/3210.2.150.32 – 10.2.150.3210.2.150.32
3410.2.150.33/3210.2.150.33 – 10.2.150.3310.2.150.33
3510.2.150.34/3210.2.150.34 – 10.2.150.3410.2.150.34
3610.2.150.35/3210.2.150.35 – 10.2.150.3510.2.150.35
3710.2.150.36/3210.2.150.36 – 10.2.150.3610.2.150.36
3810.2.150.37/3210.2.150.37 – 10.2.150.3710.2.150.37
3910.2.150.38/3210.2.150.38 – 10.2.150.3810.2.150.38
4010.2.150.39/3210.2.150.39 – 10.2.150.3910.2.150.39
4110.2.150.40/3210.2.150.40 – 10.2.150.4010.2.150.40
4210.2.150.41/3210.2.150.41 – 10.2.150.4110.2.150.41
4310.2.150.42/3210.2.150.42 – 10.2.150.4210.2.150.42
4410.2.150.43/3210.2.150.43 – 10.2.150.4310.2.150.43
4510.2.150.44/3210.2.150.44 – 10.2.150.4410.2.150.44
4610.2.150.45/3210.2.150.45 – 10.2.150.4510.2.150.45
4710.2.150.46/3210.2.150.46 – 10.2.150.4610.2.150.46
4810.2.150.47/3210.2.150.47 – 10.2.150.4710.2.150.47
4910.2.150.48/3210.2.150.48 – 10.2.150.4810.2.150.48
5010.2.150.49/3210.2.150.49 – 10.2.150.4910.2.150.49
5110.2.150.50/3210.2.150.50 – 10.2.150.5010.2.150.50
5210.2.150.51/3210.2.150.51 – 10.2.150.5110.2.150.51
5310.2.150.52/3210.2.150.52 – 10.2.150.5210.2.150.52
5410.2.150.53/3210.2.150.53 – 10.2.150.5310.2.150.53
5510.2.150.54/3210.2.150.54 – 10.2.150.5410.2.150.54
5610.2.150.55/3210.2.150.55 – 10.2.150.5510.2.150.55
5710.2.150.56/3210.2.150.56 – 10.2.150.5610.2.150.56
5810.2.150.57/3210.2.150.57 – 10.2.150.5710.2.150.57
5910.2.150.58/3210.2.150.58 – 10.2.150.5810.2.150.58
6010.2.150.59/3210.2.150.59 – 10.2.150.5910.2.150.59
6110.2.150.60/3210.2.150.60 – 10.2.150.6010.2.150.60
6210.2.150.61/3210.2.150.61 – 10.2.150.6110.2.150.61
6310.2.150.62/3210.2.150.62 – 10.2.150.6210.2.150.62
6410.2.150.63/3210.2.150.63 – 10.2.150.6310.2.150.63
6510.2.150.64/3210.2.150.64 – 10.2.150.6410.2.150.64
6610.2.150.65/3210.2.150.65 – 10.2.150.6510.2.150.65
6710.2.150.66/3210.2.150.66 – 10.2.150.6610.2.150.66
6810.2.150.67/3210.2.150.67 – 10.2.150.6710.2.150.67
6910.2.150.68/3210.2.150.68 – 10.2.150.6810.2.150.68
7010.2.150.69/3210.2.150.69 – 10.2.150.6910.2.150.69
7110.2.150.70/3210.2.150.70 – 10.2.150.7010.2.150.70
7210.2.150.71/3210.2.150.71 – 10.2.150.7110.2.150.71
7310.2.150.72/3210.2.150.72 – 10.2.150.7210.2.150.72
7410.2.150.73/3210.2.150.73 – 10.2.150.7310.2.150.73
7510.2.150.74/3210.2.150.74 – 10.2.150.7410.2.150.74
7610.2.150.75/3210.2.150.75 – 10.2.150.7510.2.150.75
7710.2.150.76/3210.2.150.76 – 10.2.150.7610.2.150.76
7810.2.150.77/3210.2.150.77 – 10.2.150.7710.2.150.77
7910.2.150.78/3210.2.150.78 – 10.2.150.7810.2.150.78
8010.2.150.79/3210.2.150.79 – 10.2.150.7910.2.150.79
8110.2.150.80/3210.2.150.80 – 10.2.150.8010.2.150.80
8210.2.150.81/3210.2.150.81 – 10.2.150.8110.2.150.81
8310.2.150.82/3210.2.150.82 – 10.2.150.8210.2.150.82
8410.2.150.83/3210.2.150.83 – 10.2.150.8310.2.150.83
8510.2.150.84/3210.2.150.84 – 10.2.150.8410.2.150.84
8610.2.150.85/3210.2.150.85 – 10.2.150.8510.2.150.85
8710.2.150.86/3210.2.150.86 – 10.2.150.8610.2.150.86
8810.2.150.87/3210.2.150.87 – 10.2.150.8710.2.150.87
8910.2.150.88/3210.2.150.88 – 10.2.150.8810.2.150.88
9010.2.150.89/3210.2.150.89 – 10.2.150.8910.2.150.89
9110.2.150.90/3210.2.150.90 – 10.2.150.9010.2.150.90
9210.2.150.91/3210.2.150.91 – 10.2.150.9110.2.150.91
9310.2.150.92/3210.2.150.92 – 10.2.150.9210.2.150.92
9410.2.150.93/3210.2.150.93 – 10.2.150.9310.2.150.93
9510.2.150.94/3210.2.150.94 – 10.2.150.9410.2.150.94
9610.2.150.95/3210.2.150.95 – 10.2.150.9510.2.150.95
9710.2.150.96/3210.2.150.96 – 10.2.150.9610.2.150.96
9810.2.150.97/3210.2.150.97 – 10.2.150.9710.2.150.97
9910.2.150.98/3210.2.150.98 – 10.2.150.9810.2.150.98
10010.2.150.99/3210.2.150.99 – 10.2.150.9910.2.150.99
10110.2.150.100/3210.2.150.100 – 10.2.150.10010.2.150.100
10210.2.150.101/3210.2.150.101 – 10.2.150.10110.2.150.101
10310.2.150.102/3210.2.150.102 – 10.2.150.10210.2.150.102
10410.2.150.103/3210.2.150.103 – 10.2.150.10310.2.150.103
10510.2.150.104/3210.2.150.104 – 10.2.150.10410.2.150.104
10610.2.150.105/3210.2.150.105 – 10.2.150.10510.2.150.105
10710.2.150.106/3210.2.150.106 – 10.2.150.10610.2.150.106
10810.2.150.107/3210.2.150.107 – 10.2.150.10710.2.150.107
10910.2.150.108/3210.2.150.108 – 10.2.150.10810.2.150.108
11010.2.150.109/3210.2.150.109 – 10.2.150.10910.2.150.109
11110.2.150.110/3210.2.150.110 – 10.2.150.11010.2.150.110
11210.2.150.111/3210.2.150.111 – 10.2.150.11110.2.150.111
11310.2.150.112/3210.2.150.112 – 10.2.150.11210.2.150.112
11410.2.150.113/3210.2.150.113 – 10.2.150.11310.2.150.113
11510.2.150.114/3210.2.150.114 – 10.2.150.11410.2.150.114
11610.2.150.115/3210.2.150.115 – 10.2.150.11510.2.150.115
11710.2.150.116/3210.2.150.116 – 10.2.150.11610.2.150.116
11810.2.150.117/3210.2.150.117 – 10.2.150.11710.2.150.117
11910.2.150.118/3210.2.150.118 – 10.2.150.11810.2.150.118
12010.2.150.119/3210.2.150.119 – 10.2.150.11910.2.150.119
12110.2.150.120/3210.2.150.120 – 10.2.150.12010.2.150.120
12210.2.150.121/3210.2.150.121 – 10.2.150.12110.2.150.121
12310.2.150.122/3210.2.150.122 – 10.2.150.12210.2.150.122
12410.2.150.123/3210.2.150.123 – 10.2.150.12310.2.150.123
12510.2.150.124/3210.2.150.124 – 10.2.150.12410.2.150.124
12610.2.150.125/3210.2.150.125 – 10.2.150.12510.2.150.125
12710.2.150.126/3210.2.150.126 – 10.2.150.12610.2.150.126
12810.2.150.127/3210.2.150.127 – 10.2.150.12710.2.150.127
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 →