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)10.167.161.0/25
network10.167.161.0/25
broadcast10.167.161.127
first host10.167.161.1
last host10.167.161.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.161.0/25
address00001010.10100111.10100001.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.10100001.00000000
broadcast00001010.10100111.10100001.01111111
green = network part, grey = host part
hex0x0aa7a100
decimal178757888
reverse dns0.161.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:a100

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.161.0/3210.167.161.0 – 10.167.161.010.167.161.0
210.167.161.1/3210.167.161.1 – 10.167.161.110.167.161.1
310.167.161.2/3210.167.161.2 – 10.167.161.210.167.161.2
410.167.161.3/3210.167.161.3 – 10.167.161.310.167.161.3
510.167.161.4/3210.167.161.4 – 10.167.161.410.167.161.4
610.167.161.5/3210.167.161.5 – 10.167.161.510.167.161.5
710.167.161.6/3210.167.161.6 – 10.167.161.610.167.161.6
810.167.161.7/3210.167.161.7 – 10.167.161.710.167.161.7
910.167.161.8/3210.167.161.8 – 10.167.161.810.167.161.8
1010.167.161.9/3210.167.161.9 – 10.167.161.910.167.161.9
1110.167.161.10/3210.167.161.10 – 10.167.161.1010.167.161.10
1210.167.161.11/3210.167.161.11 – 10.167.161.1110.167.161.11
1310.167.161.12/3210.167.161.12 – 10.167.161.1210.167.161.12
1410.167.161.13/3210.167.161.13 – 10.167.161.1310.167.161.13
1510.167.161.14/3210.167.161.14 – 10.167.161.1410.167.161.14
1610.167.161.15/3210.167.161.15 – 10.167.161.1510.167.161.15
1710.167.161.16/3210.167.161.16 – 10.167.161.1610.167.161.16
1810.167.161.17/3210.167.161.17 – 10.167.161.1710.167.161.17
1910.167.161.18/3210.167.161.18 – 10.167.161.1810.167.161.18
2010.167.161.19/3210.167.161.19 – 10.167.161.1910.167.161.19
2110.167.161.20/3210.167.161.20 – 10.167.161.2010.167.161.20
2210.167.161.21/3210.167.161.21 – 10.167.161.2110.167.161.21
2310.167.161.22/3210.167.161.22 – 10.167.161.2210.167.161.22
2410.167.161.23/3210.167.161.23 – 10.167.161.2310.167.161.23
2510.167.161.24/3210.167.161.24 – 10.167.161.2410.167.161.24
2610.167.161.25/3210.167.161.25 – 10.167.161.2510.167.161.25
2710.167.161.26/3210.167.161.26 – 10.167.161.2610.167.161.26
2810.167.161.27/3210.167.161.27 – 10.167.161.2710.167.161.27
2910.167.161.28/3210.167.161.28 – 10.167.161.2810.167.161.28
3010.167.161.29/3210.167.161.29 – 10.167.161.2910.167.161.29
3110.167.161.30/3210.167.161.30 – 10.167.161.3010.167.161.30
3210.167.161.31/3210.167.161.31 – 10.167.161.3110.167.161.31
3310.167.161.32/3210.167.161.32 – 10.167.161.3210.167.161.32
3410.167.161.33/3210.167.161.33 – 10.167.161.3310.167.161.33
3510.167.161.34/3210.167.161.34 – 10.167.161.3410.167.161.34
3610.167.161.35/3210.167.161.35 – 10.167.161.3510.167.161.35
3710.167.161.36/3210.167.161.36 – 10.167.161.3610.167.161.36
3810.167.161.37/3210.167.161.37 – 10.167.161.3710.167.161.37
3910.167.161.38/3210.167.161.38 – 10.167.161.3810.167.161.38
4010.167.161.39/3210.167.161.39 – 10.167.161.3910.167.161.39
4110.167.161.40/3210.167.161.40 – 10.167.161.4010.167.161.40
4210.167.161.41/3210.167.161.41 – 10.167.161.4110.167.161.41
4310.167.161.42/3210.167.161.42 – 10.167.161.4210.167.161.42
4410.167.161.43/3210.167.161.43 – 10.167.161.4310.167.161.43
4510.167.161.44/3210.167.161.44 – 10.167.161.4410.167.161.44
4610.167.161.45/3210.167.161.45 – 10.167.161.4510.167.161.45
4710.167.161.46/3210.167.161.46 – 10.167.161.4610.167.161.46
4810.167.161.47/3210.167.161.47 – 10.167.161.4710.167.161.47
4910.167.161.48/3210.167.161.48 – 10.167.161.4810.167.161.48
5010.167.161.49/3210.167.161.49 – 10.167.161.4910.167.161.49
5110.167.161.50/3210.167.161.50 – 10.167.161.5010.167.161.50
5210.167.161.51/3210.167.161.51 – 10.167.161.5110.167.161.51
5310.167.161.52/3210.167.161.52 – 10.167.161.5210.167.161.52
5410.167.161.53/3210.167.161.53 – 10.167.161.5310.167.161.53
5510.167.161.54/3210.167.161.54 – 10.167.161.5410.167.161.54
5610.167.161.55/3210.167.161.55 – 10.167.161.5510.167.161.55
5710.167.161.56/3210.167.161.56 – 10.167.161.5610.167.161.56
5810.167.161.57/3210.167.161.57 – 10.167.161.5710.167.161.57
5910.167.161.58/3210.167.161.58 – 10.167.161.5810.167.161.58
6010.167.161.59/3210.167.161.59 – 10.167.161.5910.167.161.59
6110.167.161.60/3210.167.161.60 – 10.167.161.6010.167.161.60
6210.167.161.61/3210.167.161.61 – 10.167.161.6110.167.161.61
6310.167.161.62/3210.167.161.62 – 10.167.161.6210.167.161.62
6410.167.161.63/3210.167.161.63 – 10.167.161.6310.167.161.63
6510.167.161.64/3210.167.161.64 – 10.167.161.6410.167.161.64
6610.167.161.65/3210.167.161.65 – 10.167.161.6510.167.161.65
6710.167.161.66/3210.167.161.66 – 10.167.161.6610.167.161.66
6810.167.161.67/3210.167.161.67 – 10.167.161.6710.167.161.67
6910.167.161.68/3210.167.161.68 – 10.167.161.6810.167.161.68
7010.167.161.69/3210.167.161.69 – 10.167.161.6910.167.161.69
7110.167.161.70/3210.167.161.70 – 10.167.161.7010.167.161.70
7210.167.161.71/3210.167.161.71 – 10.167.161.7110.167.161.71
7310.167.161.72/3210.167.161.72 – 10.167.161.7210.167.161.72
7410.167.161.73/3210.167.161.73 – 10.167.161.7310.167.161.73
7510.167.161.74/3210.167.161.74 – 10.167.161.7410.167.161.74
7610.167.161.75/3210.167.161.75 – 10.167.161.7510.167.161.75
7710.167.161.76/3210.167.161.76 – 10.167.161.7610.167.161.76
7810.167.161.77/3210.167.161.77 – 10.167.161.7710.167.161.77
7910.167.161.78/3210.167.161.78 – 10.167.161.7810.167.161.78
8010.167.161.79/3210.167.161.79 – 10.167.161.7910.167.161.79
8110.167.161.80/3210.167.161.80 – 10.167.161.8010.167.161.80
8210.167.161.81/3210.167.161.81 – 10.167.161.8110.167.161.81
8310.167.161.82/3210.167.161.82 – 10.167.161.8210.167.161.82
8410.167.161.83/3210.167.161.83 – 10.167.161.8310.167.161.83
8510.167.161.84/3210.167.161.84 – 10.167.161.8410.167.161.84
8610.167.161.85/3210.167.161.85 – 10.167.161.8510.167.161.85
8710.167.161.86/3210.167.161.86 – 10.167.161.8610.167.161.86
8810.167.161.87/3210.167.161.87 – 10.167.161.8710.167.161.87
8910.167.161.88/3210.167.161.88 – 10.167.161.8810.167.161.88
9010.167.161.89/3210.167.161.89 – 10.167.161.8910.167.161.89
9110.167.161.90/3210.167.161.90 – 10.167.161.9010.167.161.90
9210.167.161.91/3210.167.161.91 – 10.167.161.9110.167.161.91
9310.167.161.92/3210.167.161.92 – 10.167.161.9210.167.161.92
9410.167.161.93/3210.167.161.93 – 10.167.161.9310.167.161.93
9510.167.161.94/3210.167.161.94 – 10.167.161.9410.167.161.94
9610.167.161.95/3210.167.161.95 – 10.167.161.9510.167.161.95
9710.167.161.96/3210.167.161.96 – 10.167.161.9610.167.161.96
9810.167.161.97/3210.167.161.97 – 10.167.161.9710.167.161.97
9910.167.161.98/3210.167.161.98 – 10.167.161.9810.167.161.98
10010.167.161.99/3210.167.161.99 – 10.167.161.9910.167.161.99
10110.167.161.100/3210.167.161.100 – 10.167.161.10010.167.161.100
10210.167.161.101/3210.167.161.101 – 10.167.161.10110.167.161.101
10310.167.161.102/3210.167.161.102 – 10.167.161.10210.167.161.102
10410.167.161.103/3210.167.161.103 – 10.167.161.10310.167.161.103
10510.167.161.104/3210.167.161.104 – 10.167.161.10410.167.161.104
10610.167.161.105/3210.167.161.105 – 10.167.161.10510.167.161.105
10710.167.161.106/3210.167.161.106 – 10.167.161.10610.167.161.106
10810.167.161.107/3210.167.161.107 – 10.167.161.10710.167.161.107
10910.167.161.108/3210.167.161.108 – 10.167.161.10810.167.161.108
11010.167.161.109/3210.167.161.109 – 10.167.161.10910.167.161.109
11110.167.161.110/3210.167.161.110 – 10.167.161.11010.167.161.110
11210.167.161.111/3210.167.161.111 – 10.167.161.11110.167.161.111
11310.167.161.112/3210.167.161.112 – 10.167.161.11210.167.161.112
11410.167.161.113/3210.167.161.113 – 10.167.161.11310.167.161.113
11510.167.161.114/3210.167.161.114 – 10.167.161.11410.167.161.114
11610.167.161.115/3210.167.161.115 – 10.167.161.11510.167.161.115
11710.167.161.116/3210.167.161.116 – 10.167.161.11610.167.161.116
11810.167.161.117/3210.167.161.117 – 10.167.161.11710.167.161.117
11910.167.161.118/3210.167.161.118 – 10.167.161.11810.167.161.118
12010.167.161.119/3210.167.161.119 – 10.167.161.11910.167.161.119
12110.167.161.120/3210.167.161.120 – 10.167.161.12010.167.161.120
12210.167.161.121/3210.167.161.121 – 10.167.161.12110.167.161.121
12310.167.161.122/3210.167.161.122 – 10.167.161.12210.167.161.122
12410.167.161.123/3210.167.161.123 – 10.167.161.12310.167.161.123
12510.167.161.124/3210.167.161.124 – 10.167.161.12410.167.161.124
12610.167.161.125/3210.167.161.125 – 10.167.161.12510.167.161.125
12710.167.161.126/3210.167.161.126 – 10.167.161.12610.167.161.126
12810.167.161.127/3210.167.161.127 – 10.167.161.12710.167.161.127
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 →