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)10.2.238.0/25
network10.2.238.0/25
broadcast10.2.238.127
first host10.2.238.1
last host10.2.238.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.2.238.0/25
address00001010.00000010.11101110.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00000010.11101110.00000000
broadcast00001010.00000010.11101110.01111111
green = network part, grey = host part
hex0x0a02ee00
decimal167964160
reverse dns0.238.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:ee00

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.238.0/3210.2.238.0 – 10.2.238.010.2.238.0
210.2.238.1/3210.2.238.1 – 10.2.238.110.2.238.1
310.2.238.2/3210.2.238.2 – 10.2.238.210.2.238.2
410.2.238.3/3210.2.238.3 – 10.2.238.310.2.238.3
510.2.238.4/3210.2.238.4 – 10.2.238.410.2.238.4
610.2.238.5/3210.2.238.5 – 10.2.238.510.2.238.5
710.2.238.6/3210.2.238.6 – 10.2.238.610.2.238.6
810.2.238.7/3210.2.238.7 – 10.2.238.710.2.238.7
910.2.238.8/3210.2.238.8 – 10.2.238.810.2.238.8
1010.2.238.9/3210.2.238.9 – 10.2.238.910.2.238.9
1110.2.238.10/3210.2.238.10 – 10.2.238.1010.2.238.10
1210.2.238.11/3210.2.238.11 – 10.2.238.1110.2.238.11
1310.2.238.12/3210.2.238.12 – 10.2.238.1210.2.238.12
1410.2.238.13/3210.2.238.13 – 10.2.238.1310.2.238.13
1510.2.238.14/3210.2.238.14 – 10.2.238.1410.2.238.14
1610.2.238.15/3210.2.238.15 – 10.2.238.1510.2.238.15
1710.2.238.16/3210.2.238.16 – 10.2.238.1610.2.238.16
1810.2.238.17/3210.2.238.17 – 10.2.238.1710.2.238.17
1910.2.238.18/3210.2.238.18 – 10.2.238.1810.2.238.18
2010.2.238.19/3210.2.238.19 – 10.2.238.1910.2.238.19
2110.2.238.20/3210.2.238.20 – 10.2.238.2010.2.238.20
2210.2.238.21/3210.2.238.21 – 10.2.238.2110.2.238.21
2310.2.238.22/3210.2.238.22 – 10.2.238.2210.2.238.22
2410.2.238.23/3210.2.238.23 – 10.2.238.2310.2.238.23
2510.2.238.24/3210.2.238.24 – 10.2.238.2410.2.238.24
2610.2.238.25/3210.2.238.25 – 10.2.238.2510.2.238.25
2710.2.238.26/3210.2.238.26 – 10.2.238.2610.2.238.26
2810.2.238.27/3210.2.238.27 – 10.2.238.2710.2.238.27
2910.2.238.28/3210.2.238.28 – 10.2.238.2810.2.238.28
3010.2.238.29/3210.2.238.29 – 10.2.238.2910.2.238.29
3110.2.238.30/3210.2.238.30 – 10.2.238.3010.2.238.30
3210.2.238.31/3210.2.238.31 – 10.2.238.3110.2.238.31
3310.2.238.32/3210.2.238.32 – 10.2.238.3210.2.238.32
3410.2.238.33/3210.2.238.33 – 10.2.238.3310.2.238.33
3510.2.238.34/3210.2.238.34 – 10.2.238.3410.2.238.34
3610.2.238.35/3210.2.238.35 – 10.2.238.3510.2.238.35
3710.2.238.36/3210.2.238.36 – 10.2.238.3610.2.238.36
3810.2.238.37/3210.2.238.37 – 10.2.238.3710.2.238.37
3910.2.238.38/3210.2.238.38 – 10.2.238.3810.2.238.38
4010.2.238.39/3210.2.238.39 – 10.2.238.3910.2.238.39
4110.2.238.40/3210.2.238.40 – 10.2.238.4010.2.238.40
4210.2.238.41/3210.2.238.41 – 10.2.238.4110.2.238.41
4310.2.238.42/3210.2.238.42 – 10.2.238.4210.2.238.42
4410.2.238.43/3210.2.238.43 – 10.2.238.4310.2.238.43
4510.2.238.44/3210.2.238.44 – 10.2.238.4410.2.238.44
4610.2.238.45/3210.2.238.45 – 10.2.238.4510.2.238.45
4710.2.238.46/3210.2.238.46 – 10.2.238.4610.2.238.46
4810.2.238.47/3210.2.238.47 – 10.2.238.4710.2.238.47
4910.2.238.48/3210.2.238.48 – 10.2.238.4810.2.238.48
5010.2.238.49/3210.2.238.49 – 10.2.238.4910.2.238.49
5110.2.238.50/3210.2.238.50 – 10.2.238.5010.2.238.50
5210.2.238.51/3210.2.238.51 – 10.2.238.5110.2.238.51
5310.2.238.52/3210.2.238.52 – 10.2.238.5210.2.238.52
5410.2.238.53/3210.2.238.53 – 10.2.238.5310.2.238.53
5510.2.238.54/3210.2.238.54 – 10.2.238.5410.2.238.54
5610.2.238.55/3210.2.238.55 – 10.2.238.5510.2.238.55
5710.2.238.56/3210.2.238.56 – 10.2.238.5610.2.238.56
5810.2.238.57/3210.2.238.57 – 10.2.238.5710.2.238.57
5910.2.238.58/3210.2.238.58 – 10.2.238.5810.2.238.58
6010.2.238.59/3210.2.238.59 – 10.2.238.5910.2.238.59
6110.2.238.60/3210.2.238.60 – 10.2.238.6010.2.238.60
6210.2.238.61/3210.2.238.61 – 10.2.238.6110.2.238.61
6310.2.238.62/3210.2.238.62 – 10.2.238.6210.2.238.62
6410.2.238.63/3210.2.238.63 – 10.2.238.6310.2.238.63
6510.2.238.64/3210.2.238.64 – 10.2.238.6410.2.238.64
6610.2.238.65/3210.2.238.65 – 10.2.238.6510.2.238.65
6710.2.238.66/3210.2.238.66 – 10.2.238.6610.2.238.66
6810.2.238.67/3210.2.238.67 – 10.2.238.6710.2.238.67
6910.2.238.68/3210.2.238.68 – 10.2.238.6810.2.238.68
7010.2.238.69/3210.2.238.69 – 10.2.238.6910.2.238.69
7110.2.238.70/3210.2.238.70 – 10.2.238.7010.2.238.70
7210.2.238.71/3210.2.238.71 – 10.2.238.7110.2.238.71
7310.2.238.72/3210.2.238.72 – 10.2.238.7210.2.238.72
7410.2.238.73/3210.2.238.73 – 10.2.238.7310.2.238.73
7510.2.238.74/3210.2.238.74 – 10.2.238.7410.2.238.74
7610.2.238.75/3210.2.238.75 – 10.2.238.7510.2.238.75
7710.2.238.76/3210.2.238.76 – 10.2.238.7610.2.238.76
7810.2.238.77/3210.2.238.77 – 10.2.238.7710.2.238.77
7910.2.238.78/3210.2.238.78 – 10.2.238.7810.2.238.78
8010.2.238.79/3210.2.238.79 – 10.2.238.7910.2.238.79
8110.2.238.80/3210.2.238.80 – 10.2.238.8010.2.238.80
8210.2.238.81/3210.2.238.81 – 10.2.238.8110.2.238.81
8310.2.238.82/3210.2.238.82 – 10.2.238.8210.2.238.82
8410.2.238.83/3210.2.238.83 – 10.2.238.8310.2.238.83
8510.2.238.84/3210.2.238.84 – 10.2.238.8410.2.238.84
8610.2.238.85/3210.2.238.85 – 10.2.238.8510.2.238.85
8710.2.238.86/3210.2.238.86 – 10.2.238.8610.2.238.86
8810.2.238.87/3210.2.238.87 – 10.2.238.8710.2.238.87
8910.2.238.88/3210.2.238.88 – 10.2.238.8810.2.238.88
9010.2.238.89/3210.2.238.89 – 10.2.238.8910.2.238.89
9110.2.238.90/3210.2.238.90 – 10.2.238.9010.2.238.90
9210.2.238.91/3210.2.238.91 – 10.2.238.9110.2.238.91
9310.2.238.92/3210.2.238.92 – 10.2.238.9210.2.238.92
9410.2.238.93/3210.2.238.93 – 10.2.238.9310.2.238.93
9510.2.238.94/3210.2.238.94 – 10.2.238.9410.2.238.94
9610.2.238.95/3210.2.238.95 – 10.2.238.9510.2.238.95
9710.2.238.96/3210.2.238.96 – 10.2.238.9610.2.238.96
9810.2.238.97/3210.2.238.97 – 10.2.238.9710.2.238.97
9910.2.238.98/3210.2.238.98 – 10.2.238.9810.2.238.98
10010.2.238.99/3210.2.238.99 – 10.2.238.9910.2.238.99
10110.2.238.100/3210.2.238.100 – 10.2.238.10010.2.238.100
10210.2.238.101/3210.2.238.101 – 10.2.238.10110.2.238.101
10310.2.238.102/3210.2.238.102 – 10.2.238.10210.2.238.102
10410.2.238.103/3210.2.238.103 – 10.2.238.10310.2.238.103
10510.2.238.104/3210.2.238.104 – 10.2.238.10410.2.238.104
10610.2.238.105/3210.2.238.105 – 10.2.238.10510.2.238.105
10710.2.238.106/3210.2.238.106 – 10.2.238.10610.2.238.106
10810.2.238.107/3210.2.238.107 – 10.2.238.10710.2.238.107
10910.2.238.108/3210.2.238.108 – 10.2.238.10810.2.238.108
11010.2.238.109/3210.2.238.109 – 10.2.238.10910.2.238.109
11110.2.238.110/3210.2.238.110 – 10.2.238.11010.2.238.110
11210.2.238.111/3210.2.238.111 – 10.2.238.11110.2.238.111
11310.2.238.112/3210.2.238.112 – 10.2.238.11210.2.238.112
11410.2.238.113/3210.2.238.113 – 10.2.238.11310.2.238.113
11510.2.238.114/3210.2.238.114 – 10.2.238.11410.2.238.114
11610.2.238.115/3210.2.238.115 – 10.2.238.11510.2.238.115
11710.2.238.116/3210.2.238.116 – 10.2.238.11610.2.238.116
11810.2.238.117/3210.2.238.117 – 10.2.238.11710.2.238.117
11910.2.238.118/3210.2.238.118 – 10.2.238.11810.2.238.118
12010.2.238.119/3210.2.238.119 – 10.2.238.11910.2.238.119
12110.2.238.120/3210.2.238.120 – 10.2.238.12010.2.238.120
12210.2.238.121/3210.2.238.121 – 10.2.238.12110.2.238.121
12310.2.238.122/3210.2.238.122 – 10.2.238.12210.2.238.122
12410.2.238.123/3210.2.238.123 – 10.2.238.12310.2.238.123
12510.2.238.124/3210.2.238.124 – 10.2.238.12410.2.238.124
12610.2.238.125/3210.2.238.125 – 10.2.238.12510.2.238.125
12710.2.238.126/3210.2.238.126 – 10.2.238.12610.2.238.126
12810.2.238.127/3210.2.238.127 – 10.2.238.12710.2.238.127
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 →