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)10.131.86.0/25
network10.131.86.0/25
broadcast10.131.86.127
first host10.131.86.1
last host10.131.86.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.131.86.0/25
address00001010.10000011.01010110.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10000011.01010110.00000000
broadcast00001010.10000011.01010110.01111111
green = network part, grey = host part
hex0x0a835600
decimal176379392
reverse dns0.86.131.10.in-addr.arpa
ipv4-mapped::ffff:a83:5600

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.131.86.0/3210.131.86.0 – 10.131.86.010.131.86.0
210.131.86.1/3210.131.86.1 – 10.131.86.110.131.86.1
310.131.86.2/3210.131.86.2 – 10.131.86.210.131.86.2
410.131.86.3/3210.131.86.3 – 10.131.86.310.131.86.3
510.131.86.4/3210.131.86.4 – 10.131.86.410.131.86.4
610.131.86.5/3210.131.86.5 – 10.131.86.510.131.86.5
710.131.86.6/3210.131.86.6 – 10.131.86.610.131.86.6
810.131.86.7/3210.131.86.7 – 10.131.86.710.131.86.7
910.131.86.8/3210.131.86.8 – 10.131.86.810.131.86.8
1010.131.86.9/3210.131.86.9 – 10.131.86.910.131.86.9
1110.131.86.10/3210.131.86.10 – 10.131.86.1010.131.86.10
1210.131.86.11/3210.131.86.11 – 10.131.86.1110.131.86.11
1310.131.86.12/3210.131.86.12 – 10.131.86.1210.131.86.12
1410.131.86.13/3210.131.86.13 – 10.131.86.1310.131.86.13
1510.131.86.14/3210.131.86.14 – 10.131.86.1410.131.86.14
1610.131.86.15/3210.131.86.15 – 10.131.86.1510.131.86.15
1710.131.86.16/3210.131.86.16 – 10.131.86.1610.131.86.16
1810.131.86.17/3210.131.86.17 – 10.131.86.1710.131.86.17
1910.131.86.18/3210.131.86.18 – 10.131.86.1810.131.86.18
2010.131.86.19/3210.131.86.19 – 10.131.86.1910.131.86.19
2110.131.86.20/3210.131.86.20 – 10.131.86.2010.131.86.20
2210.131.86.21/3210.131.86.21 – 10.131.86.2110.131.86.21
2310.131.86.22/3210.131.86.22 – 10.131.86.2210.131.86.22
2410.131.86.23/3210.131.86.23 – 10.131.86.2310.131.86.23
2510.131.86.24/3210.131.86.24 – 10.131.86.2410.131.86.24
2610.131.86.25/3210.131.86.25 – 10.131.86.2510.131.86.25
2710.131.86.26/3210.131.86.26 – 10.131.86.2610.131.86.26
2810.131.86.27/3210.131.86.27 – 10.131.86.2710.131.86.27
2910.131.86.28/3210.131.86.28 – 10.131.86.2810.131.86.28
3010.131.86.29/3210.131.86.29 – 10.131.86.2910.131.86.29
3110.131.86.30/3210.131.86.30 – 10.131.86.3010.131.86.30
3210.131.86.31/3210.131.86.31 – 10.131.86.3110.131.86.31
3310.131.86.32/3210.131.86.32 – 10.131.86.3210.131.86.32
3410.131.86.33/3210.131.86.33 – 10.131.86.3310.131.86.33
3510.131.86.34/3210.131.86.34 – 10.131.86.3410.131.86.34
3610.131.86.35/3210.131.86.35 – 10.131.86.3510.131.86.35
3710.131.86.36/3210.131.86.36 – 10.131.86.3610.131.86.36
3810.131.86.37/3210.131.86.37 – 10.131.86.3710.131.86.37
3910.131.86.38/3210.131.86.38 – 10.131.86.3810.131.86.38
4010.131.86.39/3210.131.86.39 – 10.131.86.3910.131.86.39
4110.131.86.40/3210.131.86.40 – 10.131.86.4010.131.86.40
4210.131.86.41/3210.131.86.41 – 10.131.86.4110.131.86.41
4310.131.86.42/3210.131.86.42 – 10.131.86.4210.131.86.42
4410.131.86.43/3210.131.86.43 – 10.131.86.4310.131.86.43
4510.131.86.44/3210.131.86.44 – 10.131.86.4410.131.86.44
4610.131.86.45/3210.131.86.45 – 10.131.86.4510.131.86.45
4710.131.86.46/3210.131.86.46 – 10.131.86.4610.131.86.46
4810.131.86.47/3210.131.86.47 – 10.131.86.4710.131.86.47
4910.131.86.48/3210.131.86.48 – 10.131.86.4810.131.86.48
5010.131.86.49/3210.131.86.49 – 10.131.86.4910.131.86.49
5110.131.86.50/3210.131.86.50 – 10.131.86.5010.131.86.50
5210.131.86.51/3210.131.86.51 – 10.131.86.5110.131.86.51
5310.131.86.52/3210.131.86.52 – 10.131.86.5210.131.86.52
5410.131.86.53/3210.131.86.53 – 10.131.86.5310.131.86.53
5510.131.86.54/3210.131.86.54 – 10.131.86.5410.131.86.54
5610.131.86.55/3210.131.86.55 – 10.131.86.5510.131.86.55
5710.131.86.56/3210.131.86.56 – 10.131.86.5610.131.86.56
5810.131.86.57/3210.131.86.57 – 10.131.86.5710.131.86.57
5910.131.86.58/3210.131.86.58 – 10.131.86.5810.131.86.58
6010.131.86.59/3210.131.86.59 – 10.131.86.5910.131.86.59
6110.131.86.60/3210.131.86.60 – 10.131.86.6010.131.86.60
6210.131.86.61/3210.131.86.61 – 10.131.86.6110.131.86.61
6310.131.86.62/3210.131.86.62 – 10.131.86.6210.131.86.62
6410.131.86.63/3210.131.86.63 – 10.131.86.6310.131.86.63
6510.131.86.64/3210.131.86.64 – 10.131.86.6410.131.86.64
6610.131.86.65/3210.131.86.65 – 10.131.86.6510.131.86.65
6710.131.86.66/3210.131.86.66 – 10.131.86.6610.131.86.66
6810.131.86.67/3210.131.86.67 – 10.131.86.6710.131.86.67
6910.131.86.68/3210.131.86.68 – 10.131.86.6810.131.86.68
7010.131.86.69/3210.131.86.69 – 10.131.86.6910.131.86.69
7110.131.86.70/3210.131.86.70 – 10.131.86.7010.131.86.70
7210.131.86.71/3210.131.86.71 – 10.131.86.7110.131.86.71
7310.131.86.72/3210.131.86.72 – 10.131.86.7210.131.86.72
7410.131.86.73/3210.131.86.73 – 10.131.86.7310.131.86.73
7510.131.86.74/3210.131.86.74 – 10.131.86.7410.131.86.74
7610.131.86.75/3210.131.86.75 – 10.131.86.7510.131.86.75
7710.131.86.76/3210.131.86.76 – 10.131.86.7610.131.86.76
7810.131.86.77/3210.131.86.77 – 10.131.86.7710.131.86.77
7910.131.86.78/3210.131.86.78 – 10.131.86.7810.131.86.78
8010.131.86.79/3210.131.86.79 – 10.131.86.7910.131.86.79
8110.131.86.80/3210.131.86.80 – 10.131.86.8010.131.86.80
8210.131.86.81/3210.131.86.81 – 10.131.86.8110.131.86.81
8310.131.86.82/3210.131.86.82 – 10.131.86.8210.131.86.82
8410.131.86.83/3210.131.86.83 – 10.131.86.8310.131.86.83
8510.131.86.84/3210.131.86.84 – 10.131.86.8410.131.86.84
8610.131.86.85/3210.131.86.85 – 10.131.86.8510.131.86.85
8710.131.86.86/3210.131.86.86 – 10.131.86.8610.131.86.86
8810.131.86.87/3210.131.86.87 – 10.131.86.8710.131.86.87
8910.131.86.88/3210.131.86.88 – 10.131.86.8810.131.86.88
9010.131.86.89/3210.131.86.89 – 10.131.86.8910.131.86.89
9110.131.86.90/3210.131.86.90 – 10.131.86.9010.131.86.90
9210.131.86.91/3210.131.86.91 – 10.131.86.9110.131.86.91
9310.131.86.92/3210.131.86.92 – 10.131.86.9210.131.86.92
9410.131.86.93/3210.131.86.93 – 10.131.86.9310.131.86.93
9510.131.86.94/3210.131.86.94 – 10.131.86.9410.131.86.94
9610.131.86.95/3210.131.86.95 – 10.131.86.9510.131.86.95
9710.131.86.96/3210.131.86.96 – 10.131.86.9610.131.86.96
9810.131.86.97/3210.131.86.97 – 10.131.86.9710.131.86.97
9910.131.86.98/3210.131.86.98 – 10.131.86.9810.131.86.98
10010.131.86.99/3210.131.86.99 – 10.131.86.9910.131.86.99
10110.131.86.100/3210.131.86.100 – 10.131.86.10010.131.86.100
10210.131.86.101/3210.131.86.101 – 10.131.86.10110.131.86.101
10310.131.86.102/3210.131.86.102 – 10.131.86.10210.131.86.102
10410.131.86.103/3210.131.86.103 – 10.131.86.10310.131.86.103
10510.131.86.104/3210.131.86.104 – 10.131.86.10410.131.86.104
10610.131.86.105/3210.131.86.105 – 10.131.86.10510.131.86.105
10710.131.86.106/3210.131.86.106 – 10.131.86.10610.131.86.106
10810.131.86.107/3210.131.86.107 – 10.131.86.10710.131.86.107
10910.131.86.108/3210.131.86.108 – 10.131.86.10810.131.86.108
11010.131.86.109/3210.131.86.109 – 10.131.86.10910.131.86.109
11110.131.86.110/3210.131.86.110 – 10.131.86.11010.131.86.110
11210.131.86.111/3210.131.86.111 – 10.131.86.11110.131.86.111
11310.131.86.112/3210.131.86.112 – 10.131.86.11210.131.86.112
11410.131.86.113/3210.131.86.113 – 10.131.86.11310.131.86.113
11510.131.86.114/3210.131.86.114 – 10.131.86.11410.131.86.114
11610.131.86.115/3210.131.86.115 – 10.131.86.11510.131.86.115
11710.131.86.116/3210.131.86.116 – 10.131.86.11610.131.86.116
11810.131.86.117/3210.131.86.117 – 10.131.86.11710.131.86.117
11910.131.86.118/3210.131.86.118 – 10.131.86.11810.131.86.118
12010.131.86.119/3210.131.86.119 – 10.131.86.11910.131.86.119
12110.131.86.120/3210.131.86.120 – 10.131.86.12010.131.86.120
12210.131.86.121/3210.131.86.121 – 10.131.86.12110.131.86.121
12310.131.86.122/3210.131.86.122 – 10.131.86.12210.131.86.122
12410.131.86.123/3210.131.86.123 – 10.131.86.12310.131.86.123
12510.131.86.124/3210.131.86.124 – 10.131.86.12410.131.86.124
12610.131.86.125/3210.131.86.125 – 10.131.86.12510.131.86.125
12710.131.86.126/3210.131.86.126 – 10.131.86.12610.131.86.126
12810.131.86.127/3210.131.86.127 – 10.131.86.12710.131.86.127
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 →