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)10.167.64.0/25
network10.167.64.0/25
broadcast10.167.64.127
first host10.167.64.1
last host10.167.64.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.64.0/25
address00001010.10100111.01000000.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.01000000.00000000
broadcast00001010.10100111.01000000.01111111
green = network part, grey = host part
hex0x0aa74000
decimal178733056
reverse dns0.64.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:4000

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.64.0/3210.167.64.0 – 10.167.64.010.167.64.0
210.167.64.1/3210.167.64.1 – 10.167.64.110.167.64.1
310.167.64.2/3210.167.64.2 – 10.167.64.210.167.64.2
410.167.64.3/3210.167.64.3 – 10.167.64.310.167.64.3
510.167.64.4/3210.167.64.4 – 10.167.64.410.167.64.4
610.167.64.5/3210.167.64.5 – 10.167.64.510.167.64.5
710.167.64.6/3210.167.64.6 – 10.167.64.610.167.64.6
810.167.64.7/3210.167.64.7 – 10.167.64.710.167.64.7
910.167.64.8/3210.167.64.8 – 10.167.64.810.167.64.8
1010.167.64.9/3210.167.64.9 – 10.167.64.910.167.64.9
1110.167.64.10/3210.167.64.10 – 10.167.64.1010.167.64.10
1210.167.64.11/3210.167.64.11 – 10.167.64.1110.167.64.11
1310.167.64.12/3210.167.64.12 – 10.167.64.1210.167.64.12
1410.167.64.13/3210.167.64.13 – 10.167.64.1310.167.64.13
1510.167.64.14/3210.167.64.14 – 10.167.64.1410.167.64.14
1610.167.64.15/3210.167.64.15 – 10.167.64.1510.167.64.15
1710.167.64.16/3210.167.64.16 – 10.167.64.1610.167.64.16
1810.167.64.17/3210.167.64.17 – 10.167.64.1710.167.64.17
1910.167.64.18/3210.167.64.18 – 10.167.64.1810.167.64.18
2010.167.64.19/3210.167.64.19 – 10.167.64.1910.167.64.19
2110.167.64.20/3210.167.64.20 – 10.167.64.2010.167.64.20
2210.167.64.21/3210.167.64.21 – 10.167.64.2110.167.64.21
2310.167.64.22/3210.167.64.22 – 10.167.64.2210.167.64.22
2410.167.64.23/3210.167.64.23 – 10.167.64.2310.167.64.23
2510.167.64.24/3210.167.64.24 – 10.167.64.2410.167.64.24
2610.167.64.25/3210.167.64.25 – 10.167.64.2510.167.64.25
2710.167.64.26/3210.167.64.26 – 10.167.64.2610.167.64.26
2810.167.64.27/3210.167.64.27 – 10.167.64.2710.167.64.27
2910.167.64.28/3210.167.64.28 – 10.167.64.2810.167.64.28
3010.167.64.29/3210.167.64.29 – 10.167.64.2910.167.64.29
3110.167.64.30/3210.167.64.30 – 10.167.64.3010.167.64.30
3210.167.64.31/3210.167.64.31 – 10.167.64.3110.167.64.31
3310.167.64.32/3210.167.64.32 – 10.167.64.3210.167.64.32
3410.167.64.33/3210.167.64.33 – 10.167.64.3310.167.64.33
3510.167.64.34/3210.167.64.34 – 10.167.64.3410.167.64.34
3610.167.64.35/3210.167.64.35 – 10.167.64.3510.167.64.35
3710.167.64.36/3210.167.64.36 – 10.167.64.3610.167.64.36
3810.167.64.37/3210.167.64.37 – 10.167.64.3710.167.64.37
3910.167.64.38/3210.167.64.38 – 10.167.64.3810.167.64.38
4010.167.64.39/3210.167.64.39 – 10.167.64.3910.167.64.39
4110.167.64.40/3210.167.64.40 – 10.167.64.4010.167.64.40
4210.167.64.41/3210.167.64.41 – 10.167.64.4110.167.64.41
4310.167.64.42/3210.167.64.42 – 10.167.64.4210.167.64.42
4410.167.64.43/3210.167.64.43 – 10.167.64.4310.167.64.43
4510.167.64.44/3210.167.64.44 – 10.167.64.4410.167.64.44
4610.167.64.45/3210.167.64.45 – 10.167.64.4510.167.64.45
4710.167.64.46/3210.167.64.46 – 10.167.64.4610.167.64.46
4810.167.64.47/3210.167.64.47 – 10.167.64.4710.167.64.47
4910.167.64.48/3210.167.64.48 – 10.167.64.4810.167.64.48
5010.167.64.49/3210.167.64.49 – 10.167.64.4910.167.64.49
5110.167.64.50/3210.167.64.50 – 10.167.64.5010.167.64.50
5210.167.64.51/3210.167.64.51 – 10.167.64.5110.167.64.51
5310.167.64.52/3210.167.64.52 – 10.167.64.5210.167.64.52
5410.167.64.53/3210.167.64.53 – 10.167.64.5310.167.64.53
5510.167.64.54/3210.167.64.54 – 10.167.64.5410.167.64.54
5610.167.64.55/3210.167.64.55 – 10.167.64.5510.167.64.55
5710.167.64.56/3210.167.64.56 – 10.167.64.5610.167.64.56
5810.167.64.57/3210.167.64.57 – 10.167.64.5710.167.64.57
5910.167.64.58/3210.167.64.58 – 10.167.64.5810.167.64.58
6010.167.64.59/3210.167.64.59 – 10.167.64.5910.167.64.59
6110.167.64.60/3210.167.64.60 – 10.167.64.6010.167.64.60
6210.167.64.61/3210.167.64.61 – 10.167.64.6110.167.64.61
6310.167.64.62/3210.167.64.62 – 10.167.64.6210.167.64.62
6410.167.64.63/3210.167.64.63 – 10.167.64.6310.167.64.63
6510.167.64.64/3210.167.64.64 – 10.167.64.6410.167.64.64
6610.167.64.65/3210.167.64.65 – 10.167.64.6510.167.64.65
6710.167.64.66/3210.167.64.66 – 10.167.64.6610.167.64.66
6810.167.64.67/3210.167.64.67 – 10.167.64.6710.167.64.67
6910.167.64.68/3210.167.64.68 – 10.167.64.6810.167.64.68
7010.167.64.69/3210.167.64.69 – 10.167.64.6910.167.64.69
7110.167.64.70/3210.167.64.70 – 10.167.64.7010.167.64.70
7210.167.64.71/3210.167.64.71 – 10.167.64.7110.167.64.71
7310.167.64.72/3210.167.64.72 – 10.167.64.7210.167.64.72
7410.167.64.73/3210.167.64.73 – 10.167.64.7310.167.64.73
7510.167.64.74/3210.167.64.74 – 10.167.64.7410.167.64.74
7610.167.64.75/3210.167.64.75 – 10.167.64.7510.167.64.75
7710.167.64.76/3210.167.64.76 – 10.167.64.7610.167.64.76
7810.167.64.77/3210.167.64.77 – 10.167.64.7710.167.64.77
7910.167.64.78/3210.167.64.78 – 10.167.64.7810.167.64.78
8010.167.64.79/3210.167.64.79 – 10.167.64.7910.167.64.79
8110.167.64.80/3210.167.64.80 – 10.167.64.8010.167.64.80
8210.167.64.81/3210.167.64.81 – 10.167.64.8110.167.64.81
8310.167.64.82/3210.167.64.82 – 10.167.64.8210.167.64.82
8410.167.64.83/3210.167.64.83 – 10.167.64.8310.167.64.83
8510.167.64.84/3210.167.64.84 – 10.167.64.8410.167.64.84
8610.167.64.85/3210.167.64.85 – 10.167.64.8510.167.64.85
8710.167.64.86/3210.167.64.86 – 10.167.64.8610.167.64.86
8810.167.64.87/3210.167.64.87 – 10.167.64.8710.167.64.87
8910.167.64.88/3210.167.64.88 – 10.167.64.8810.167.64.88
9010.167.64.89/3210.167.64.89 – 10.167.64.8910.167.64.89
9110.167.64.90/3210.167.64.90 – 10.167.64.9010.167.64.90
9210.167.64.91/3210.167.64.91 – 10.167.64.9110.167.64.91
9310.167.64.92/3210.167.64.92 – 10.167.64.9210.167.64.92
9410.167.64.93/3210.167.64.93 – 10.167.64.9310.167.64.93
9510.167.64.94/3210.167.64.94 – 10.167.64.9410.167.64.94
9610.167.64.95/3210.167.64.95 – 10.167.64.9510.167.64.95
9710.167.64.96/3210.167.64.96 – 10.167.64.9610.167.64.96
9810.167.64.97/3210.167.64.97 – 10.167.64.9710.167.64.97
9910.167.64.98/3210.167.64.98 – 10.167.64.9810.167.64.98
10010.167.64.99/3210.167.64.99 – 10.167.64.9910.167.64.99
10110.167.64.100/3210.167.64.100 – 10.167.64.10010.167.64.100
10210.167.64.101/3210.167.64.101 – 10.167.64.10110.167.64.101
10310.167.64.102/3210.167.64.102 – 10.167.64.10210.167.64.102
10410.167.64.103/3210.167.64.103 – 10.167.64.10310.167.64.103
10510.167.64.104/3210.167.64.104 – 10.167.64.10410.167.64.104
10610.167.64.105/3210.167.64.105 – 10.167.64.10510.167.64.105
10710.167.64.106/3210.167.64.106 – 10.167.64.10610.167.64.106
10810.167.64.107/3210.167.64.107 – 10.167.64.10710.167.64.107
10910.167.64.108/3210.167.64.108 – 10.167.64.10810.167.64.108
11010.167.64.109/3210.167.64.109 – 10.167.64.10910.167.64.109
11110.167.64.110/3210.167.64.110 – 10.167.64.11010.167.64.110
11210.167.64.111/3210.167.64.111 – 10.167.64.11110.167.64.111
11310.167.64.112/3210.167.64.112 – 10.167.64.11210.167.64.112
11410.167.64.113/3210.167.64.113 – 10.167.64.11310.167.64.113
11510.167.64.114/3210.167.64.114 – 10.167.64.11410.167.64.114
11610.167.64.115/3210.167.64.115 – 10.167.64.11510.167.64.115
11710.167.64.116/3210.167.64.116 – 10.167.64.11610.167.64.116
11810.167.64.117/3210.167.64.117 – 10.167.64.11710.167.64.117
11910.167.64.118/3210.167.64.118 – 10.167.64.11810.167.64.118
12010.167.64.119/3210.167.64.119 – 10.167.64.11910.167.64.119
12110.167.64.120/3210.167.64.120 – 10.167.64.12010.167.64.120
12210.167.64.121/3210.167.64.121 – 10.167.64.12110.167.64.121
12310.167.64.122/3210.167.64.122 – 10.167.64.12210.167.64.122
12410.167.64.123/3210.167.64.123 – 10.167.64.12310.167.64.123
12510.167.64.124/3210.167.64.124 – 10.167.64.12410.167.64.124
12610.167.64.125/3210.167.64.125 – 10.167.64.12510.167.64.125
12710.167.64.126/3210.167.64.126 – 10.167.64.12610.167.64.126
12810.167.64.127/3210.167.64.127 – 10.167.64.12710.167.64.127
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 →