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)10.167.80.0/25
network10.167.80.0/25
broadcast10.167.80.127
first host10.167.80.1
last host10.167.80.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.80.0/25
address00001010.10100111.01010000.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.01010000.00000000
broadcast00001010.10100111.01010000.01111111
green = network part, grey = host part
hex0x0aa75000
decimal178737152
reverse dns0.80.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:5000

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.80.0/3210.167.80.0 – 10.167.80.010.167.80.0
210.167.80.1/3210.167.80.1 – 10.167.80.110.167.80.1
310.167.80.2/3210.167.80.2 – 10.167.80.210.167.80.2
410.167.80.3/3210.167.80.3 – 10.167.80.310.167.80.3
510.167.80.4/3210.167.80.4 – 10.167.80.410.167.80.4
610.167.80.5/3210.167.80.5 – 10.167.80.510.167.80.5
710.167.80.6/3210.167.80.6 – 10.167.80.610.167.80.6
810.167.80.7/3210.167.80.7 – 10.167.80.710.167.80.7
910.167.80.8/3210.167.80.8 – 10.167.80.810.167.80.8
1010.167.80.9/3210.167.80.9 – 10.167.80.910.167.80.9
1110.167.80.10/3210.167.80.10 – 10.167.80.1010.167.80.10
1210.167.80.11/3210.167.80.11 – 10.167.80.1110.167.80.11
1310.167.80.12/3210.167.80.12 – 10.167.80.1210.167.80.12
1410.167.80.13/3210.167.80.13 – 10.167.80.1310.167.80.13
1510.167.80.14/3210.167.80.14 – 10.167.80.1410.167.80.14
1610.167.80.15/3210.167.80.15 – 10.167.80.1510.167.80.15
1710.167.80.16/3210.167.80.16 – 10.167.80.1610.167.80.16
1810.167.80.17/3210.167.80.17 – 10.167.80.1710.167.80.17
1910.167.80.18/3210.167.80.18 – 10.167.80.1810.167.80.18
2010.167.80.19/3210.167.80.19 – 10.167.80.1910.167.80.19
2110.167.80.20/3210.167.80.20 – 10.167.80.2010.167.80.20
2210.167.80.21/3210.167.80.21 – 10.167.80.2110.167.80.21
2310.167.80.22/3210.167.80.22 – 10.167.80.2210.167.80.22
2410.167.80.23/3210.167.80.23 – 10.167.80.2310.167.80.23
2510.167.80.24/3210.167.80.24 – 10.167.80.2410.167.80.24
2610.167.80.25/3210.167.80.25 – 10.167.80.2510.167.80.25
2710.167.80.26/3210.167.80.26 – 10.167.80.2610.167.80.26
2810.167.80.27/3210.167.80.27 – 10.167.80.2710.167.80.27
2910.167.80.28/3210.167.80.28 – 10.167.80.2810.167.80.28
3010.167.80.29/3210.167.80.29 – 10.167.80.2910.167.80.29
3110.167.80.30/3210.167.80.30 – 10.167.80.3010.167.80.30
3210.167.80.31/3210.167.80.31 – 10.167.80.3110.167.80.31
3310.167.80.32/3210.167.80.32 – 10.167.80.3210.167.80.32
3410.167.80.33/3210.167.80.33 – 10.167.80.3310.167.80.33
3510.167.80.34/3210.167.80.34 – 10.167.80.3410.167.80.34
3610.167.80.35/3210.167.80.35 – 10.167.80.3510.167.80.35
3710.167.80.36/3210.167.80.36 – 10.167.80.3610.167.80.36
3810.167.80.37/3210.167.80.37 – 10.167.80.3710.167.80.37
3910.167.80.38/3210.167.80.38 – 10.167.80.3810.167.80.38
4010.167.80.39/3210.167.80.39 – 10.167.80.3910.167.80.39
4110.167.80.40/3210.167.80.40 – 10.167.80.4010.167.80.40
4210.167.80.41/3210.167.80.41 – 10.167.80.4110.167.80.41
4310.167.80.42/3210.167.80.42 – 10.167.80.4210.167.80.42
4410.167.80.43/3210.167.80.43 – 10.167.80.4310.167.80.43
4510.167.80.44/3210.167.80.44 – 10.167.80.4410.167.80.44
4610.167.80.45/3210.167.80.45 – 10.167.80.4510.167.80.45
4710.167.80.46/3210.167.80.46 – 10.167.80.4610.167.80.46
4810.167.80.47/3210.167.80.47 – 10.167.80.4710.167.80.47
4910.167.80.48/3210.167.80.48 – 10.167.80.4810.167.80.48
5010.167.80.49/3210.167.80.49 – 10.167.80.4910.167.80.49
5110.167.80.50/3210.167.80.50 – 10.167.80.5010.167.80.50
5210.167.80.51/3210.167.80.51 – 10.167.80.5110.167.80.51
5310.167.80.52/3210.167.80.52 – 10.167.80.5210.167.80.52
5410.167.80.53/3210.167.80.53 – 10.167.80.5310.167.80.53
5510.167.80.54/3210.167.80.54 – 10.167.80.5410.167.80.54
5610.167.80.55/3210.167.80.55 – 10.167.80.5510.167.80.55
5710.167.80.56/3210.167.80.56 – 10.167.80.5610.167.80.56
5810.167.80.57/3210.167.80.57 – 10.167.80.5710.167.80.57
5910.167.80.58/3210.167.80.58 – 10.167.80.5810.167.80.58
6010.167.80.59/3210.167.80.59 – 10.167.80.5910.167.80.59
6110.167.80.60/3210.167.80.60 – 10.167.80.6010.167.80.60
6210.167.80.61/3210.167.80.61 – 10.167.80.6110.167.80.61
6310.167.80.62/3210.167.80.62 – 10.167.80.6210.167.80.62
6410.167.80.63/3210.167.80.63 – 10.167.80.6310.167.80.63
6510.167.80.64/3210.167.80.64 – 10.167.80.6410.167.80.64
6610.167.80.65/3210.167.80.65 – 10.167.80.6510.167.80.65
6710.167.80.66/3210.167.80.66 – 10.167.80.6610.167.80.66
6810.167.80.67/3210.167.80.67 – 10.167.80.6710.167.80.67
6910.167.80.68/3210.167.80.68 – 10.167.80.6810.167.80.68
7010.167.80.69/3210.167.80.69 – 10.167.80.6910.167.80.69
7110.167.80.70/3210.167.80.70 – 10.167.80.7010.167.80.70
7210.167.80.71/3210.167.80.71 – 10.167.80.7110.167.80.71
7310.167.80.72/3210.167.80.72 – 10.167.80.7210.167.80.72
7410.167.80.73/3210.167.80.73 – 10.167.80.7310.167.80.73
7510.167.80.74/3210.167.80.74 – 10.167.80.7410.167.80.74
7610.167.80.75/3210.167.80.75 – 10.167.80.7510.167.80.75
7710.167.80.76/3210.167.80.76 – 10.167.80.7610.167.80.76
7810.167.80.77/3210.167.80.77 – 10.167.80.7710.167.80.77
7910.167.80.78/3210.167.80.78 – 10.167.80.7810.167.80.78
8010.167.80.79/3210.167.80.79 – 10.167.80.7910.167.80.79
8110.167.80.80/3210.167.80.80 – 10.167.80.8010.167.80.80
8210.167.80.81/3210.167.80.81 – 10.167.80.8110.167.80.81
8310.167.80.82/3210.167.80.82 – 10.167.80.8210.167.80.82
8410.167.80.83/3210.167.80.83 – 10.167.80.8310.167.80.83
8510.167.80.84/3210.167.80.84 – 10.167.80.8410.167.80.84
8610.167.80.85/3210.167.80.85 – 10.167.80.8510.167.80.85
8710.167.80.86/3210.167.80.86 – 10.167.80.8610.167.80.86
8810.167.80.87/3210.167.80.87 – 10.167.80.8710.167.80.87
8910.167.80.88/3210.167.80.88 – 10.167.80.8810.167.80.88
9010.167.80.89/3210.167.80.89 – 10.167.80.8910.167.80.89
9110.167.80.90/3210.167.80.90 – 10.167.80.9010.167.80.90
9210.167.80.91/3210.167.80.91 – 10.167.80.9110.167.80.91
9310.167.80.92/3210.167.80.92 – 10.167.80.9210.167.80.92
9410.167.80.93/3210.167.80.93 – 10.167.80.9310.167.80.93
9510.167.80.94/3210.167.80.94 – 10.167.80.9410.167.80.94
9610.167.80.95/3210.167.80.95 – 10.167.80.9510.167.80.95
9710.167.80.96/3210.167.80.96 – 10.167.80.9610.167.80.96
9810.167.80.97/3210.167.80.97 – 10.167.80.9710.167.80.97
9910.167.80.98/3210.167.80.98 – 10.167.80.9810.167.80.98
10010.167.80.99/3210.167.80.99 – 10.167.80.9910.167.80.99
10110.167.80.100/3210.167.80.100 – 10.167.80.10010.167.80.100
10210.167.80.101/3210.167.80.101 – 10.167.80.10110.167.80.101
10310.167.80.102/3210.167.80.102 – 10.167.80.10210.167.80.102
10410.167.80.103/3210.167.80.103 – 10.167.80.10310.167.80.103
10510.167.80.104/3210.167.80.104 – 10.167.80.10410.167.80.104
10610.167.80.105/3210.167.80.105 – 10.167.80.10510.167.80.105
10710.167.80.106/3210.167.80.106 – 10.167.80.10610.167.80.106
10810.167.80.107/3210.167.80.107 – 10.167.80.10710.167.80.107
10910.167.80.108/3210.167.80.108 – 10.167.80.10810.167.80.108
11010.167.80.109/3210.167.80.109 – 10.167.80.10910.167.80.109
11110.167.80.110/3210.167.80.110 – 10.167.80.11010.167.80.110
11210.167.80.111/3210.167.80.111 – 10.167.80.11110.167.80.111
11310.167.80.112/3210.167.80.112 – 10.167.80.11210.167.80.112
11410.167.80.113/3210.167.80.113 – 10.167.80.11310.167.80.113
11510.167.80.114/3210.167.80.114 – 10.167.80.11410.167.80.114
11610.167.80.115/3210.167.80.115 – 10.167.80.11510.167.80.115
11710.167.80.116/3210.167.80.116 – 10.167.80.11610.167.80.116
11810.167.80.117/3210.167.80.117 – 10.167.80.11710.167.80.117
11910.167.80.118/3210.167.80.118 – 10.167.80.11810.167.80.118
12010.167.80.119/3210.167.80.119 – 10.167.80.11910.167.80.119
12110.167.80.120/3210.167.80.120 – 10.167.80.12010.167.80.120
12210.167.80.121/3210.167.80.121 – 10.167.80.12110.167.80.121
12310.167.80.122/3210.167.80.122 – 10.167.80.12210.167.80.122
12410.167.80.123/3210.167.80.123 – 10.167.80.12310.167.80.123
12510.167.80.124/3210.167.80.124 – 10.167.80.12410.167.80.124
12610.167.80.125/3210.167.80.125 – 10.167.80.12510.167.80.125
12710.167.80.126/3210.167.80.126 – 10.167.80.12610.167.80.126
12810.167.80.127/3210.167.80.127 – 10.167.80.12710.167.80.127
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 →