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)10.167.38.0/25
network10.167.38.0/25
broadcast10.167.38.127
first host10.167.38.1
last host10.167.38.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.38.0/25
address00001010.10100111.00100110.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.00100110.00000000
broadcast00001010.10100111.00100110.01111111
green = network part, grey = host part
hex0x0aa72600
decimal178726400
reverse dns0.38.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:2600

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.38.0/3210.167.38.0 – 10.167.38.010.167.38.0
210.167.38.1/3210.167.38.1 – 10.167.38.110.167.38.1
310.167.38.2/3210.167.38.2 – 10.167.38.210.167.38.2
410.167.38.3/3210.167.38.3 – 10.167.38.310.167.38.3
510.167.38.4/3210.167.38.4 – 10.167.38.410.167.38.4
610.167.38.5/3210.167.38.5 – 10.167.38.510.167.38.5
710.167.38.6/3210.167.38.6 – 10.167.38.610.167.38.6
810.167.38.7/3210.167.38.7 – 10.167.38.710.167.38.7
910.167.38.8/3210.167.38.8 – 10.167.38.810.167.38.8
1010.167.38.9/3210.167.38.9 – 10.167.38.910.167.38.9
1110.167.38.10/3210.167.38.10 – 10.167.38.1010.167.38.10
1210.167.38.11/3210.167.38.11 – 10.167.38.1110.167.38.11
1310.167.38.12/3210.167.38.12 – 10.167.38.1210.167.38.12
1410.167.38.13/3210.167.38.13 – 10.167.38.1310.167.38.13
1510.167.38.14/3210.167.38.14 – 10.167.38.1410.167.38.14
1610.167.38.15/3210.167.38.15 – 10.167.38.1510.167.38.15
1710.167.38.16/3210.167.38.16 – 10.167.38.1610.167.38.16
1810.167.38.17/3210.167.38.17 – 10.167.38.1710.167.38.17
1910.167.38.18/3210.167.38.18 – 10.167.38.1810.167.38.18
2010.167.38.19/3210.167.38.19 – 10.167.38.1910.167.38.19
2110.167.38.20/3210.167.38.20 – 10.167.38.2010.167.38.20
2210.167.38.21/3210.167.38.21 – 10.167.38.2110.167.38.21
2310.167.38.22/3210.167.38.22 – 10.167.38.2210.167.38.22
2410.167.38.23/3210.167.38.23 – 10.167.38.2310.167.38.23
2510.167.38.24/3210.167.38.24 – 10.167.38.2410.167.38.24
2610.167.38.25/3210.167.38.25 – 10.167.38.2510.167.38.25
2710.167.38.26/3210.167.38.26 – 10.167.38.2610.167.38.26
2810.167.38.27/3210.167.38.27 – 10.167.38.2710.167.38.27
2910.167.38.28/3210.167.38.28 – 10.167.38.2810.167.38.28
3010.167.38.29/3210.167.38.29 – 10.167.38.2910.167.38.29
3110.167.38.30/3210.167.38.30 – 10.167.38.3010.167.38.30
3210.167.38.31/3210.167.38.31 – 10.167.38.3110.167.38.31
3310.167.38.32/3210.167.38.32 – 10.167.38.3210.167.38.32
3410.167.38.33/3210.167.38.33 – 10.167.38.3310.167.38.33
3510.167.38.34/3210.167.38.34 – 10.167.38.3410.167.38.34
3610.167.38.35/3210.167.38.35 – 10.167.38.3510.167.38.35
3710.167.38.36/3210.167.38.36 – 10.167.38.3610.167.38.36
3810.167.38.37/3210.167.38.37 – 10.167.38.3710.167.38.37
3910.167.38.38/3210.167.38.38 – 10.167.38.3810.167.38.38
4010.167.38.39/3210.167.38.39 – 10.167.38.3910.167.38.39
4110.167.38.40/3210.167.38.40 – 10.167.38.4010.167.38.40
4210.167.38.41/3210.167.38.41 – 10.167.38.4110.167.38.41
4310.167.38.42/3210.167.38.42 – 10.167.38.4210.167.38.42
4410.167.38.43/3210.167.38.43 – 10.167.38.4310.167.38.43
4510.167.38.44/3210.167.38.44 – 10.167.38.4410.167.38.44
4610.167.38.45/3210.167.38.45 – 10.167.38.4510.167.38.45
4710.167.38.46/3210.167.38.46 – 10.167.38.4610.167.38.46
4810.167.38.47/3210.167.38.47 – 10.167.38.4710.167.38.47
4910.167.38.48/3210.167.38.48 – 10.167.38.4810.167.38.48
5010.167.38.49/3210.167.38.49 – 10.167.38.4910.167.38.49
5110.167.38.50/3210.167.38.50 – 10.167.38.5010.167.38.50
5210.167.38.51/3210.167.38.51 – 10.167.38.5110.167.38.51
5310.167.38.52/3210.167.38.52 – 10.167.38.5210.167.38.52
5410.167.38.53/3210.167.38.53 – 10.167.38.5310.167.38.53
5510.167.38.54/3210.167.38.54 – 10.167.38.5410.167.38.54
5610.167.38.55/3210.167.38.55 – 10.167.38.5510.167.38.55
5710.167.38.56/3210.167.38.56 – 10.167.38.5610.167.38.56
5810.167.38.57/3210.167.38.57 – 10.167.38.5710.167.38.57
5910.167.38.58/3210.167.38.58 – 10.167.38.5810.167.38.58
6010.167.38.59/3210.167.38.59 – 10.167.38.5910.167.38.59
6110.167.38.60/3210.167.38.60 – 10.167.38.6010.167.38.60
6210.167.38.61/3210.167.38.61 – 10.167.38.6110.167.38.61
6310.167.38.62/3210.167.38.62 – 10.167.38.6210.167.38.62
6410.167.38.63/3210.167.38.63 – 10.167.38.6310.167.38.63
6510.167.38.64/3210.167.38.64 – 10.167.38.6410.167.38.64
6610.167.38.65/3210.167.38.65 – 10.167.38.6510.167.38.65
6710.167.38.66/3210.167.38.66 – 10.167.38.6610.167.38.66
6810.167.38.67/3210.167.38.67 – 10.167.38.6710.167.38.67
6910.167.38.68/3210.167.38.68 – 10.167.38.6810.167.38.68
7010.167.38.69/3210.167.38.69 – 10.167.38.6910.167.38.69
7110.167.38.70/3210.167.38.70 – 10.167.38.7010.167.38.70
7210.167.38.71/3210.167.38.71 – 10.167.38.7110.167.38.71
7310.167.38.72/3210.167.38.72 – 10.167.38.7210.167.38.72
7410.167.38.73/3210.167.38.73 – 10.167.38.7310.167.38.73
7510.167.38.74/3210.167.38.74 – 10.167.38.7410.167.38.74
7610.167.38.75/3210.167.38.75 – 10.167.38.7510.167.38.75
7710.167.38.76/3210.167.38.76 – 10.167.38.7610.167.38.76
7810.167.38.77/3210.167.38.77 – 10.167.38.7710.167.38.77
7910.167.38.78/3210.167.38.78 – 10.167.38.7810.167.38.78
8010.167.38.79/3210.167.38.79 – 10.167.38.7910.167.38.79
8110.167.38.80/3210.167.38.80 – 10.167.38.8010.167.38.80
8210.167.38.81/3210.167.38.81 – 10.167.38.8110.167.38.81
8310.167.38.82/3210.167.38.82 – 10.167.38.8210.167.38.82
8410.167.38.83/3210.167.38.83 – 10.167.38.8310.167.38.83
8510.167.38.84/3210.167.38.84 – 10.167.38.8410.167.38.84
8610.167.38.85/3210.167.38.85 – 10.167.38.8510.167.38.85
8710.167.38.86/3210.167.38.86 – 10.167.38.8610.167.38.86
8810.167.38.87/3210.167.38.87 – 10.167.38.8710.167.38.87
8910.167.38.88/3210.167.38.88 – 10.167.38.8810.167.38.88
9010.167.38.89/3210.167.38.89 – 10.167.38.8910.167.38.89
9110.167.38.90/3210.167.38.90 – 10.167.38.9010.167.38.90
9210.167.38.91/3210.167.38.91 – 10.167.38.9110.167.38.91
9310.167.38.92/3210.167.38.92 – 10.167.38.9210.167.38.92
9410.167.38.93/3210.167.38.93 – 10.167.38.9310.167.38.93
9510.167.38.94/3210.167.38.94 – 10.167.38.9410.167.38.94
9610.167.38.95/3210.167.38.95 – 10.167.38.9510.167.38.95
9710.167.38.96/3210.167.38.96 – 10.167.38.9610.167.38.96
9810.167.38.97/3210.167.38.97 – 10.167.38.9710.167.38.97
9910.167.38.98/3210.167.38.98 – 10.167.38.9810.167.38.98
10010.167.38.99/3210.167.38.99 – 10.167.38.9910.167.38.99
10110.167.38.100/3210.167.38.100 – 10.167.38.10010.167.38.100
10210.167.38.101/3210.167.38.101 – 10.167.38.10110.167.38.101
10310.167.38.102/3210.167.38.102 – 10.167.38.10210.167.38.102
10410.167.38.103/3210.167.38.103 – 10.167.38.10310.167.38.103
10510.167.38.104/3210.167.38.104 – 10.167.38.10410.167.38.104
10610.167.38.105/3210.167.38.105 – 10.167.38.10510.167.38.105
10710.167.38.106/3210.167.38.106 – 10.167.38.10610.167.38.106
10810.167.38.107/3210.167.38.107 – 10.167.38.10710.167.38.107
10910.167.38.108/3210.167.38.108 – 10.167.38.10810.167.38.108
11010.167.38.109/3210.167.38.109 – 10.167.38.10910.167.38.109
11110.167.38.110/3210.167.38.110 – 10.167.38.11010.167.38.110
11210.167.38.111/3210.167.38.111 – 10.167.38.11110.167.38.111
11310.167.38.112/3210.167.38.112 – 10.167.38.11210.167.38.112
11410.167.38.113/3210.167.38.113 – 10.167.38.11310.167.38.113
11510.167.38.114/3210.167.38.114 – 10.167.38.11410.167.38.114
11610.167.38.115/3210.167.38.115 – 10.167.38.11510.167.38.115
11710.167.38.116/3210.167.38.116 – 10.167.38.11610.167.38.116
11810.167.38.117/3210.167.38.117 – 10.167.38.11710.167.38.117
11910.167.38.118/3210.167.38.118 – 10.167.38.11810.167.38.118
12010.167.38.119/3210.167.38.119 – 10.167.38.11910.167.38.119
12110.167.38.120/3210.167.38.120 – 10.167.38.12010.167.38.120
12210.167.38.121/3210.167.38.121 – 10.167.38.12110.167.38.121
12310.167.38.122/3210.167.38.122 – 10.167.38.12210.167.38.122
12410.167.38.123/3210.167.38.123 – 10.167.38.12310.167.38.123
12510.167.38.124/3210.167.38.124 – 10.167.38.12410.167.38.124
12610.167.38.125/3210.167.38.125 – 10.167.38.12510.167.38.125
12710.167.38.126/3210.167.38.126 – 10.167.38.12610.167.38.126
12810.167.38.127/3210.167.38.127 – 10.167.38.12710.167.38.127
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 →