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)10.72.60.0/25
network10.72.60.0/25
broadcast10.72.60.127
first host10.72.60.1
last host10.72.60.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.72.60.0/25
address00001010.01001000.00111100.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01001000.00111100.00000000
broadcast00001010.01001000.00111100.01111111
green = network part, grey = host part
hex0x0a483c00
decimal172506112
reverse dns0.60.72.10.in-addr.arpa
ipv4-mapped::ffff:a48:3c00

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.72.60.0/3210.72.60.0 – 10.72.60.010.72.60.0
210.72.60.1/3210.72.60.1 – 10.72.60.110.72.60.1
310.72.60.2/3210.72.60.2 – 10.72.60.210.72.60.2
410.72.60.3/3210.72.60.3 – 10.72.60.310.72.60.3
510.72.60.4/3210.72.60.4 – 10.72.60.410.72.60.4
610.72.60.5/3210.72.60.5 – 10.72.60.510.72.60.5
710.72.60.6/3210.72.60.6 – 10.72.60.610.72.60.6
810.72.60.7/3210.72.60.7 – 10.72.60.710.72.60.7
910.72.60.8/3210.72.60.8 – 10.72.60.810.72.60.8
1010.72.60.9/3210.72.60.9 – 10.72.60.910.72.60.9
1110.72.60.10/3210.72.60.10 – 10.72.60.1010.72.60.10
1210.72.60.11/3210.72.60.11 – 10.72.60.1110.72.60.11
1310.72.60.12/3210.72.60.12 – 10.72.60.1210.72.60.12
1410.72.60.13/3210.72.60.13 – 10.72.60.1310.72.60.13
1510.72.60.14/3210.72.60.14 – 10.72.60.1410.72.60.14
1610.72.60.15/3210.72.60.15 – 10.72.60.1510.72.60.15
1710.72.60.16/3210.72.60.16 – 10.72.60.1610.72.60.16
1810.72.60.17/3210.72.60.17 – 10.72.60.1710.72.60.17
1910.72.60.18/3210.72.60.18 – 10.72.60.1810.72.60.18
2010.72.60.19/3210.72.60.19 – 10.72.60.1910.72.60.19
2110.72.60.20/3210.72.60.20 – 10.72.60.2010.72.60.20
2210.72.60.21/3210.72.60.21 – 10.72.60.2110.72.60.21
2310.72.60.22/3210.72.60.22 – 10.72.60.2210.72.60.22
2410.72.60.23/3210.72.60.23 – 10.72.60.2310.72.60.23
2510.72.60.24/3210.72.60.24 – 10.72.60.2410.72.60.24
2610.72.60.25/3210.72.60.25 – 10.72.60.2510.72.60.25
2710.72.60.26/3210.72.60.26 – 10.72.60.2610.72.60.26
2810.72.60.27/3210.72.60.27 – 10.72.60.2710.72.60.27
2910.72.60.28/3210.72.60.28 – 10.72.60.2810.72.60.28
3010.72.60.29/3210.72.60.29 – 10.72.60.2910.72.60.29
3110.72.60.30/3210.72.60.30 – 10.72.60.3010.72.60.30
3210.72.60.31/3210.72.60.31 – 10.72.60.3110.72.60.31
3310.72.60.32/3210.72.60.32 – 10.72.60.3210.72.60.32
3410.72.60.33/3210.72.60.33 – 10.72.60.3310.72.60.33
3510.72.60.34/3210.72.60.34 – 10.72.60.3410.72.60.34
3610.72.60.35/3210.72.60.35 – 10.72.60.3510.72.60.35
3710.72.60.36/3210.72.60.36 – 10.72.60.3610.72.60.36
3810.72.60.37/3210.72.60.37 – 10.72.60.3710.72.60.37
3910.72.60.38/3210.72.60.38 – 10.72.60.3810.72.60.38
4010.72.60.39/3210.72.60.39 – 10.72.60.3910.72.60.39
4110.72.60.40/3210.72.60.40 – 10.72.60.4010.72.60.40
4210.72.60.41/3210.72.60.41 – 10.72.60.4110.72.60.41
4310.72.60.42/3210.72.60.42 – 10.72.60.4210.72.60.42
4410.72.60.43/3210.72.60.43 – 10.72.60.4310.72.60.43
4510.72.60.44/3210.72.60.44 – 10.72.60.4410.72.60.44
4610.72.60.45/3210.72.60.45 – 10.72.60.4510.72.60.45
4710.72.60.46/3210.72.60.46 – 10.72.60.4610.72.60.46
4810.72.60.47/3210.72.60.47 – 10.72.60.4710.72.60.47
4910.72.60.48/3210.72.60.48 – 10.72.60.4810.72.60.48
5010.72.60.49/3210.72.60.49 – 10.72.60.4910.72.60.49
5110.72.60.50/3210.72.60.50 – 10.72.60.5010.72.60.50
5210.72.60.51/3210.72.60.51 – 10.72.60.5110.72.60.51
5310.72.60.52/3210.72.60.52 – 10.72.60.5210.72.60.52
5410.72.60.53/3210.72.60.53 – 10.72.60.5310.72.60.53
5510.72.60.54/3210.72.60.54 – 10.72.60.5410.72.60.54
5610.72.60.55/3210.72.60.55 – 10.72.60.5510.72.60.55
5710.72.60.56/3210.72.60.56 – 10.72.60.5610.72.60.56
5810.72.60.57/3210.72.60.57 – 10.72.60.5710.72.60.57
5910.72.60.58/3210.72.60.58 – 10.72.60.5810.72.60.58
6010.72.60.59/3210.72.60.59 – 10.72.60.5910.72.60.59
6110.72.60.60/3210.72.60.60 – 10.72.60.6010.72.60.60
6210.72.60.61/3210.72.60.61 – 10.72.60.6110.72.60.61
6310.72.60.62/3210.72.60.62 – 10.72.60.6210.72.60.62
6410.72.60.63/3210.72.60.63 – 10.72.60.6310.72.60.63
6510.72.60.64/3210.72.60.64 – 10.72.60.6410.72.60.64
6610.72.60.65/3210.72.60.65 – 10.72.60.6510.72.60.65
6710.72.60.66/3210.72.60.66 – 10.72.60.6610.72.60.66
6810.72.60.67/3210.72.60.67 – 10.72.60.6710.72.60.67
6910.72.60.68/3210.72.60.68 – 10.72.60.6810.72.60.68
7010.72.60.69/3210.72.60.69 – 10.72.60.6910.72.60.69
7110.72.60.70/3210.72.60.70 – 10.72.60.7010.72.60.70
7210.72.60.71/3210.72.60.71 – 10.72.60.7110.72.60.71
7310.72.60.72/3210.72.60.72 – 10.72.60.7210.72.60.72
7410.72.60.73/3210.72.60.73 – 10.72.60.7310.72.60.73
7510.72.60.74/3210.72.60.74 – 10.72.60.7410.72.60.74
7610.72.60.75/3210.72.60.75 – 10.72.60.7510.72.60.75
7710.72.60.76/3210.72.60.76 – 10.72.60.7610.72.60.76
7810.72.60.77/3210.72.60.77 – 10.72.60.7710.72.60.77
7910.72.60.78/3210.72.60.78 – 10.72.60.7810.72.60.78
8010.72.60.79/3210.72.60.79 – 10.72.60.7910.72.60.79
8110.72.60.80/3210.72.60.80 – 10.72.60.8010.72.60.80
8210.72.60.81/3210.72.60.81 – 10.72.60.8110.72.60.81
8310.72.60.82/3210.72.60.82 – 10.72.60.8210.72.60.82
8410.72.60.83/3210.72.60.83 – 10.72.60.8310.72.60.83
8510.72.60.84/3210.72.60.84 – 10.72.60.8410.72.60.84
8610.72.60.85/3210.72.60.85 – 10.72.60.8510.72.60.85
8710.72.60.86/3210.72.60.86 – 10.72.60.8610.72.60.86
8810.72.60.87/3210.72.60.87 – 10.72.60.8710.72.60.87
8910.72.60.88/3210.72.60.88 – 10.72.60.8810.72.60.88
9010.72.60.89/3210.72.60.89 – 10.72.60.8910.72.60.89
9110.72.60.90/3210.72.60.90 – 10.72.60.9010.72.60.90
9210.72.60.91/3210.72.60.91 – 10.72.60.9110.72.60.91
9310.72.60.92/3210.72.60.92 – 10.72.60.9210.72.60.92
9410.72.60.93/3210.72.60.93 – 10.72.60.9310.72.60.93
9510.72.60.94/3210.72.60.94 – 10.72.60.9410.72.60.94
9610.72.60.95/3210.72.60.95 – 10.72.60.9510.72.60.95
9710.72.60.96/3210.72.60.96 – 10.72.60.9610.72.60.96
9810.72.60.97/3210.72.60.97 – 10.72.60.9710.72.60.97
9910.72.60.98/3210.72.60.98 – 10.72.60.9810.72.60.98
10010.72.60.99/3210.72.60.99 – 10.72.60.9910.72.60.99
10110.72.60.100/3210.72.60.100 – 10.72.60.10010.72.60.100
10210.72.60.101/3210.72.60.101 – 10.72.60.10110.72.60.101
10310.72.60.102/3210.72.60.102 – 10.72.60.10210.72.60.102
10410.72.60.103/3210.72.60.103 – 10.72.60.10310.72.60.103
10510.72.60.104/3210.72.60.104 – 10.72.60.10410.72.60.104
10610.72.60.105/3210.72.60.105 – 10.72.60.10510.72.60.105
10710.72.60.106/3210.72.60.106 – 10.72.60.10610.72.60.106
10810.72.60.107/3210.72.60.107 – 10.72.60.10710.72.60.107
10910.72.60.108/3210.72.60.108 – 10.72.60.10810.72.60.108
11010.72.60.109/3210.72.60.109 – 10.72.60.10910.72.60.109
11110.72.60.110/3210.72.60.110 – 10.72.60.11010.72.60.110
11210.72.60.111/3210.72.60.111 – 10.72.60.11110.72.60.111
11310.72.60.112/3210.72.60.112 – 10.72.60.11210.72.60.112
11410.72.60.113/3210.72.60.113 – 10.72.60.11310.72.60.113
11510.72.60.114/3210.72.60.114 – 10.72.60.11410.72.60.114
11610.72.60.115/3210.72.60.115 – 10.72.60.11510.72.60.115
11710.72.60.116/3210.72.60.116 – 10.72.60.11610.72.60.116
11810.72.60.117/3210.72.60.117 – 10.72.60.11710.72.60.117
11910.72.60.118/3210.72.60.118 – 10.72.60.11810.72.60.118
12010.72.60.119/3210.72.60.119 – 10.72.60.11910.72.60.119
12110.72.60.120/3210.72.60.120 – 10.72.60.12010.72.60.120
12210.72.60.121/3210.72.60.121 – 10.72.60.12110.72.60.121
12310.72.60.122/3210.72.60.122 – 10.72.60.12210.72.60.122
12410.72.60.123/3210.72.60.123 – 10.72.60.12310.72.60.123
12510.72.60.124/3210.72.60.124 – 10.72.60.12410.72.60.124
12610.72.60.125/3210.72.60.125 – 10.72.60.12510.72.60.125
12710.72.60.126/3210.72.60.126 – 10.72.60.12610.72.60.126
12810.72.60.127/3210.72.60.127 – 10.72.60.12710.72.60.127
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 →