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)10.232.90.0/25
network10.232.90.0/25
broadcast10.232.90.127
first host10.232.90.1
last host10.232.90.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.232.90.0/25
address00001010.11101000.01011010.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.11101000.01011010.00000000
broadcast00001010.11101000.01011010.01111111
green = network part, grey = host part
hex0x0ae85a00
decimal182999552
reverse dns0.90.232.10.in-addr.arpa
ipv4-mapped::ffff:ae8:5a00

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.232.90.0/3210.232.90.0 – 10.232.90.010.232.90.0
210.232.90.1/3210.232.90.1 – 10.232.90.110.232.90.1
310.232.90.2/3210.232.90.2 – 10.232.90.210.232.90.2
410.232.90.3/3210.232.90.3 – 10.232.90.310.232.90.3
510.232.90.4/3210.232.90.4 – 10.232.90.410.232.90.4
610.232.90.5/3210.232.90.5 – 10.232.90.510.232.90.5
710.232.90.6/3210.232.90.6 – 10.232.90.610.232.90.6
810.232.90.7/3210.232.90.7 – 10.232.90.710.232.90.7
910.232.90.8/3210.232.90.8 – 10.232.90.810.232.90.8
1010.232.90.9/3210.232.90.9 – 10.232.90.910.232.90.9
1110.232.90.10/3210.232.90.10 – 10.232.90.1010.232.90.10
1210.232.90.11/3210.232.90.11 – 10.232.90.1110.232.90.11
1310.232.90.12/3210.232.90.12 – 10.232.90.1210.232.90.12
1410.232.90.13/3210.232.90.13 – 10.232.90.1310.232.90.13
1510.232.90.14/3210.232.90.14 – 10.232.90.1410.232.90.14
1610.232.90.15/3210.232.90.15 – 10.232.90.1510.232.90.15
1710.232.90.16/3210.232.90.16 – 10.232.90.1610.232.90.16
1810.232.90.17/3210.232.90.17 – 10.232.90.1710.232.90.17
1910.232.90.18/3210.232.90.18 – 10.232.90.1810.232.90.18
2010.232.90.19/3210.232.90.19 – 10.232.90.1910.232.90.19
2110.232.90.20/3210.232.90.20 – 10.232.90.2010.232.90.20
2210.232.90.21/3210.232.90.21 – 10.232.90.2110.232.90.21
2310.232.90.22/3210.232.90.22 – 10.232.90.2210.232.90.22
2410.232.90.23/3210.232.90.23 – 10.232.90.2310.232.90.23
2510.232.90.24/3210.232.90.24 – 10.232.90.2410.232.90.24
2610.232.90.25/3210.232.90.25 – 10.232.90.2510.232.90.25
2710.232.90.26/3210.232.90.26 – 10.232.90.2610.232.90.26
2810.232.90.27/3210.232.90.27 – 10.232.90.2710.232.90.27
2910.232.90.28/3210.232.90.28 – 10.232.90.2810.232.90.28
3010.232.90.29/3210.232.90.29 – 10.232.90.2910.232.90.29
3110.232.90.30/3210.232.90.30 – 10.232.90.3010.232.90.30
3210.232.90.31/3210.232.90.31 – 10.232.90.3110.232.90.31
3310.232.90.32/3210.232.90.32 – 10.232.90.3210.232.90.32
3410.232.90.33/3210.232.90.33 – 10.232.90.3310.232.90.33
3510.232.90.34/3210.232.90.34 – 10.232.90.3410.232.90.34
3610.232.90.35/3210.232.90.35 – 10.232.90.3510.232.90.35
3710.232.90.36/3210.232.90.36 – 10.232.90.3610.232.90.36
3810.232.90.37/3210.232.90.37 – 10.232.90.3710.232.90.37
3910.232.90.38/3210.232.90.38 – 10.232.90.3810.232.90.38
4010.232.90.39/3210.232.90.39 – 10.232.90.3910.232.90.39
4110.232.90.40/3210.232.90.40 – 10.232.90.4010.232.90.40
4210.232.90.41/3210.232.90.41 – 10.232.90.4110.232.90.41
4310.232.90.42/3210.232.90.42 – 10.232.90.4210.232.90.42
4410.232.90.43/3210.232.90.43 – 10.232.90.4310.232.90.43
4510.232.90.44/3210.232.90.44 – 10.232.90.4410.232.90.44
4610.232.90.45/3210.232.90.45 – 10.232.90.4510.232.90.45
4710.232.90.46/3210.232.90.46 – 10.232.90.4610.232.90.46
4810.232.90.47/3210.232.90.47 – 10.232.90.4710.232.90.47
4910.232.90.48/3210.232.90.48 – 10.232.90.4810.232.90.48
5010.232.90.49/3210.232.90.49 – 10.232.90.4910.232.90.49
5110.232.90.50/3210.232.90.50 – 10.232.90.5010.232.90.50
5210.232.90.51/3210.232.90.51 – 10.232.90.5110.232.90.51
5310.232.90.52/3210.232.90.52 – 10.232.90.5210.232.90.52
5410.232.90.53/3210.232.90.53 – 10.232.90.5310.232.90.53
5510.232.90.54/3210.232.90.54 – 10.232.90.5410.232.90.54
5610.232.90.55/3210.232.90.55 – 10.232.90.5510.232.90.55
5710.232.90.56/3210.232.90.56 – 10.232.90.5610.232.90.56
5810.232.90.57/3210.232.90.57 – 10.232.90.5710.232.90.57
5910.232.90.58/3210.232.90.58 – 10.232.90.5810.232.90.58
6010.232.90.59/3210.232.90.59 – 10.232.90.5910.232.90.59
6110.232.90.60/3210.232.90.60 – 10.232.90.6010.232.90.60
6210.232.90.61/3210.232.90.61 – 10.232.90.6110.232.90.61
6310.232.90.62/3210.232.90.62 – 10.232.90.6210.232.90.62
6410.232.90.63/3210.232.90.63 – 10.232.90.6310.232.90.63
6510.232.90.64/3210.232.90.64 – 10.232.90.6410.232.90.64
6610.232.90.65/3210.232.90.65 – 10.232.90.6510.232.90.65
6710.232.90.66/3210.232.90.66 – 10.232.90.6610.232.90.66
6810.232.90.67/3210.232.90.67 – 10.232.90.6710.232.90.67
6910.232.90.68/3210.232.90.68 – 10.232.90.6810.232.90.68
7010.232.90.69/3210.232.90.69 – 10.232.90.6910.232.90.69
7110.232.90.70/3210.232.90.70 – 10.232.90.7010.232.90.70
7210.232.90.71/3210.232.90.71 – 10.232.90.7110.232.90.71
7310.232.90.72/3210.232.90.72 – 10.232.90.7210.232.90.72
7410.232.90.73/3210.232.90.73 – 10.232.90.7310.232.90.73
7510.232.90.74/3210.232.90.74 – 10.232.90.7410.232.90.74
7610.232.90.75/3210.232.90.75 – 10.232.90.7510.232.90.75
7710.232.90.76/3210.232.90.76 – 10.232.90.7610.232.90.76
7810.232.90.77/3210.232.90.77 – 10.232.90.7710.232.90.77
7910.232.90.78/3210.232.90.78 – 10.232.90.7810.232.90.78
8010.232.90.79/3210.232.90.79 – 10.232.90.7910.232.90.79
8110.232.90.80/3210.232.90.80 – 10.232.90.8010.232.90.80
8210.232.90.81/3210.232.90.81 – 10.232.90.8110.232.90.81
8310.232.90.82/3210.232.90.82 – 10.232.90.8210.232.90.82
8410.232.90.83/3210.232.90.83 – 10.232.90.8310.232.90.83
8510.232.90.84/3210.232.90.84 – 10.232.90.8410.232.90.84
8610.232.90.85/3210.232.90.85 – 10.232.90.8510.232.90.85
8710.232.90.86/3210.232.90.86 – 10.232.90.8610.232.90.86
8810.232.90.87/3210.232.90.87 – 10.232.90.8710.232.90.87
8910.232.90.88/3210.232.90.88 – 10.232.90.8810.232.90.88
9010.232.90.89/3210.232.90.89 – 10.232.90.8910.232.90.89
9110.232.90.90/3210.232.90.90 – 10.232.90.9010.232.90.90
9210.232.90.91/3210.232.90.91 – 10.232.90.9110.232.90.91
9310.232.90.92/3210.232.90.92 – 10.232.90.9210.232.90.92
9410.232.90.93/3210.232.90.93 – 10.232.90.9310.232.90.93
9510.232.90.94/3210.232.90.94 – 10.232.90.9410.232.90.94
9610.232.90.95/3210.232.90.95 – 10.232.90.9510.232.90.95
9710.232.90.96/3210.232.90.96 – 10.232.90.9610.232.90.96
9810.232.90.97/3210.232.90.97 – 10.232.90.9710.232.90.97
9910.232.90.98/3210.232.90.98 – 10.232.90.9810.232.90.98
10010.232.90.99/3210.232.90.99 – 10.232.90.9910.232.90.99
10110.232.90.100/3210.232.90.100 – 10.232.90.10010.232.90.100
10210.232.90.101/3210.232.90.101 – 10.232.90.10110.232.90.101
10310.232.90.102/3210.232.90.102 – 10.232.90.10210.232.90.102
10410.232.90.103/3210.232.90.103 – 10.232.90.10310.232.90.103
10510.232.90.104/3210.232.90.104 – 10.232.90.10410.232.90.104
10610.232.90.105/3210.232.90.105 – 10.232.90.10510.232.90.105
10710.232.90.106/3210.232.90.106 – 10.232.90.10610.232.90.106
10810.232.90.107/3210.232.90.107 – 10.232.90.10710.232.90.107
10910.232.90.108/3210.232.90.108 – 10.232.90.10810.232.90.108
11010.232.90.109/3210.232.90.109 – 10.232.90.10910.232.90.109
11110.232.90.110/3210.232.90.110 – 10.232.90.11010.232.90.110
11210.232.90.111/3210.232.90.111 – 10.232.90.11110.232.90.111
11310.232.90.112/3210.232.90.112 – 10.232.90.11210.232.90.112
11410.232.90.113/3210.232.90.113 – 10.232.90.11310.232.90.113
11510.232.90.114/3210.232.90.114 – 10.232.90.11410.232.90.114
11610.232.90.115/3210.232.90.115 – 10.232.90.11510.232.90.115
11710.232.90.116/3210.232.90.116 – 10.232.90.11610.232.90.116
11810.232.90.117/3210.232.90.117 – 10.232.90.11710.232.90.117
11910.232.90.118/3210.232.90.118 – 10.232.90.11810.232.90.118
12010.232.90.119/3210.232.90.119 – 10.232.90.11910.232.90.119
12110.232.90.120/3210.232.90.120 – 10.232.90.12010.232.90.120
12210.232.90.121/3210.232.90.121 – 10.232.90.12110.232.90.121
12310.232.90.122/3210.232.90.122 – 10.232.90.12210.232.90.122
12410.232.90.123/3210.232.90.123 – 10.232.90.12310.232.90.123
12510.232.90.124/3210.232.90.124 – 10.232.90.12410.232.90.124
12610.232.90.125/3210.232.90.125 – 10.232.90.12510.232.90.125
12710.232.90.126/3210.232.90.126 – 10.232.90.12610.232.90.126
12810.232.90.127/3210.232.90.127 – 10.232.90.12710.232.90.127
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 →