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)10.167.236.0/25
network10.167.236.0/25
broadcast10.167.236.127
first host10.167.236.1
last host10.167.236.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.236.0/25
address00001010.10100111.11101100.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.11101100.00000000
broadcast00001010.10100111.11101100.01111111
green = network part, grey = host part
hex0x0aa7ec00
decimal178777088
reverse dns0.236.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:ec00

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.236.0/3210.167.236.0 – 10.167.236.010.167.236.0
210.167.236.1/3210.167.236.1 – 10.167.236.110.167.236.1
310.167.236.2/3210.167.236.2 – 10.167.236.210.167.236.2
410.167.236.3/3210.167.236.3 – 10.167.236.310.167.236.3
510.167.236.4/3210.167.236.4 – 10.167.236.410.167.236.4
610.167.236.5/3210.167.236.5 – 10.167.236.510.167.236.5
710.167.236.6/3210.167.236.6 – 10.167.236.610.167.236.6
810.167.236.7/3210.167.236.7 – 10.167.236.710.167.236.7
910.167.236.8/3210.167.236.8 – 10.167.236.810.167.236.8
1010.167.236.9/3210.167.236.9 – 10.167.236.910.167.236.9
1110.167.236.10/3210.167.236.10 – 10.167.236.1010.167.236.10
1210.167.236.11/3210.167.236.11 – 10.167.236.1110.167.236.11
1310.167.236.12/3210.167.236.12 – 10.167.236.1210.167.236.12
1410.167.236.13/3210.167.236.13 – 10.167.236.1310.167.236.13
1510.167.236.14/3210.167.236.14 – 10.167.236.1410.167.236.14
1610.167.236.15/3210.167.236.15 – 10.167.236.1510.167.236.15
1710.167.236.16/3210.167.236.16 – 10.167.236.1610.167.236.16
1810.167.236.17/3210.167.236.17 – 10.167.236.1710.167.236.17
1910.167.236.18/3210.167.236.18 – 10.167.236.1810.167.236.18
2010.167.236.19/3210.167.236.19 – 10.167.236.1910.167.236.19
2110.167.236.20/3210.167.236.20 – 10.167.236.2010.167.236.20
2210.167.236.21/3210.167.236.21 – 10.167.236.2110.167.236.21
2310.167.236.22/3210.167.236.22 – 10.167.236.2210.167.236.22
2410.167.236.23/3210.167.236.23 – 10.167.236.2310.167.236.23
2510.167.236.24/3210.167.236.24 – 10.167.236.2410.167.236.24
2610.167.236.25/3210.167.236.25 – 10.167.236.2510.167.236.25
2710.167.236.26/3210.167.236.26 – 10.167.236.2610.167.236.26
2810.167.236.27/3210.167.236.27 – 10.167.236.2710.167.236.27
2910.167.236.28/3210.167.236.28 – 10.167.236.2810.167.236.28
3010.167.236.29/3210.167.236.29 – 10.167.236.2910.167.236.29
3110.167.236.30/3210.167.236.30 – 10.167.236.3010.167.236.30
3210.167.236.31/3210.167.236.31 – 10.167.236.3110.167.236.31
3310.167.236.32/3210.167.236.32 – 10.167.236.3210.167.236.32
3410.167.236.33/3210.167.236.33 – 10.167.236.3310.167.236.33
3510.167.236.34/3210.167.236.34 – 10.167.236.3410.167.236.34
3610.167.236.35/3210.167.236.35 – 10.167.236.3510.167.236.35
3710.167.236.36/3210.167.236.36 – 10.167.236.3610.167.236.36
3810.167.236.37/3210.167.236.37 – 10.167.236.3710.167.236.37
3910.167.236.38/3210.167.236.38 – 10.167.236.3810.167.236.38
4010.167.236.39/3210.167.236.39 – 10.167.236.3910.167.236.39
4110.167.236.40/3210.167.236.40 – 10.167.236.4010.167.236.40
4210.167.236.41/3210.167.236.41 – 10.167.236.4110.167.236.41
4310.167.236.42/3210.167.236.42 – 10.167.236.4210.167.236.42
4410.167.236.43/3210.167.236.43 – 10.167.236.4310.167.236.43
4510.167.236.44/3210.167.236.44 – 10.167.236.4410.167.236.44
4610.167.236.45/3210.167.236.45 – 10.167.236.4510.167.236.45
4710.167.236.46/3210.167.236.46 – 10.167.236.4610.167.236.46
4810.167.236.47/3210.167.236.47 – 10.167.236.4710.167.236.47
4910.167.236.48/3210.167.236.48 – 10.167.236.4810.167.236.48
5010.167.236.49/3210.167.236.49 – 10.167.236.4910.167.236.49
5110.167.236.50/3210.167.236.50 – 10.167.236.5010.167.236.50
5210.167.236.51/3210.167.236.51 – 10.167.236.5110.167.236.51
5310.167.236.52/3210.167.236.52 – 10.167.236.5210.167.236.52
5410.167.236.53/3210.167.236.53 – 10.167.236.5310.167.236.53
5510.167.236.54/3210.167.236.54 – 10.167.236.5410.167.236.54
5610.167.236.55/3210.167.236.55 – 10.167.236.5510.167.236.55
5710.167.236.56/3210.167.236.56 – 10.167.236.5610.167.236.56
5810.167.236.57/3210.167.236.57 – 10.167.236.5710.167.236.57
5910.167.236.58/3210.167.236.58 – 10.167.236.5810.167.236.58
6010.167.236.59/3210.167.236.59 – 10.167.236.5910.167.236.59
6110.167.236.60/3210.167.236.60 – 10.167.236.6010.167.236.60
6210.167.236.61/3210.167.236.61 – 10.167.236.6110.167.236.61
6310.167.236.62/3210.167.236.62 – 10.167.236.6210.167.236.62
6410.167.236.63/3210.167.236.63 – 10.167.236.6310.167.236.63
6510.167.236.64/3210.167.236.64 – 10.167.236.6410.167.236.64
6610.167.236.65/3210.167.236.65 – 10.167.236.6510.167.236.65
6710.167.236.66/3210.167.236.66 – 10.167.236.6610.167.236.66
6810.167.236.67/3210.167.236.67 – 10.167.236.6710.167.236.67
6910.167.236.68/3210.167.236.68 – 10.167.236.6810.167.236.68
7010.167.236.69/3210.167.236.69 – 10.167.236.6910.167.236.69
7110.167.236.70/3210.167.236.70 – 10.167.236.7010.167.236.70
7210.167.236.71/3210.167.236.71 – 10.167.236.7110.167.236.71
7310.167.236.72/3210.167.236.72 – 10.167.236.7210.167.236.72
7410.167.236.73/3210.167.236.73 – 10.167.236.7310.167.236.73
7510.167.236.74/3210.167.236.74 – 10.167.236.7410.167.236.74
7610.167.236.75/3210.167.236.75 – 10.167.236.7510.167.236.75
7710.167.236.76/3210.167.236.76 – 10.167.236.7610.167.236.76
7810.167.236.77/3210.167.236.77 – 10.167.236.7710.167.236.77
7910.167.236.78/3210.167.236.78 – 10.167.236.7810.167.236.78
8010.167.236.79/3210.167.236.79 – 10.167.236.7910.167.236.79
8110.167.236.80/3210.167.236.80 – 10.167.236.8010.167.236.80
8210.167.236.81/3210.167.236.81 – 10.167.236.8110.167.236.81
8310.167.236.82/3210.167.236.82 – 10.167.236.8210.167.236.82
8410.167.236.83/3210.167.236.83 – 10.167.236.8310.167.236.83
8510.167.236.84/3210.167.236.84 – 10.167.236.8410.167.236.84
8610.167.236.85/3210.167.236.85 – 10.167.236.8510.167.236.85
8710.167.236.86/3210.167.236.86 – 10.167.236.8610.167.236.86
8810.167.236.87/3210.167.236.87 – 10.167.236.8710.167.236.87
8910.167.236.88/3210.167.236.88 – 10.167.236.8810.167.236.88
9010.167.236.89/3210.167.236.89 – 10.167.236.8910.167.236.89
9110.167.236.90/3210.167.236.90 – 10.167.236.9010.167.236.90
9210.167.236.91/3210.167.236.91 – 10.167.236.9110.167.236.91
9310.167.236.92/3210.167.236.92 – 10.167.236.9210.167.236.92
9410.167.236.93/3210.167.236.93 – 10.167.236.9310.167.236.93
9510.167.236.94/3210.167.236.94 – 10.167.236.9410.167.236.94
9610.167.236.95/3210.167.236.95 – 10.167.236.9510.167.236.95
9710.167.236.96/3210.167.236.96 – 10.167.236.9610.167.236.96
9810.167.236.97/3210.167.236.97 – 10.167.236.9710.167.236.97
9910.167.236.98/3210.167.236.98 – 10.167.236.9810.167.236.98
10010.167.236.99/3210.167.236.99 – 10.167.236.9910.167.236.99
10110.167.236.100/3210.167.236.100 – 10.167.236.10010.167.236.100
10210.167.236.101/3210.167.236.101 – 10.167.236.10110.167.236.101
10310.167.236.102/3210.167.236.102 – 10.167.236.10210.167.236.102
10410.167.236.103/3210.167.236.103 – 10.167.236.10310.167.236.103
10510.167.236.104/3210.167.236.104 – 10.167.236.10410.167.236.104
10610.167.236.105/3210.167.236.105 – 10.167.236.10510.167.236.105
10710.167.236.106/3210.167.236.106 – 10.167.236.10610.167.236.106
10810.167.236.107/3210.167.236.107 – 10.167.236.10710.167.236.107
10910.167.236.108/3210.167.236.108 – 10.167.236.10810.167.236.108
11010.167.236.109/3210.167.236.109 – 10.167.236.10910.167.236.109
11110.167.236.110/3210.167.236.110 – 10.167.236.11010.167.236.110
11210.167.236.111/3210.167.236.111 – 10.167.236.11110.167.236.111
11310.167.236.112/3210.167.236.112 – 10.167.236.11210.167.236.112
11410.167.236.113/3210.167.236.113 – 10.167.236.11310.167.236.113
11510.167.236.114/3210.167.236.114 – 10.167.236.11410.167.236.114
11610.167.236.115/3210.167.236.115 – 10.167.236.11510.167.236.115
11710.167.236.116/3210.167.236.116 – 10.167.236.11610.167.236.116
11810.167.236.117/3210.167.236.117 – 10.167.236.11710.167.236.117
11910.167.236.118/3210.167.236.118 – 10.167.236.11810.167.236.118
12010.167.236.119/3210.167.236.119 – 10.167.236.11910.167.236.119
12110.167.236.120/3210.167.236.120 – 10.167.236.12010.167.236.120
12210.167.236.121/3210.167.236.121 – 10.167.236.12110.167.236.121
12310.167.236.122/3210.167.236.122 – 10.167.236.12210.167.236.122
12410.167.236.123/3210.167.236.123 – 10.167.236.12310.167.236.123
12510.167.236.124/3210.167.236.124 – 10.167.236.12410.167.236.124
12610.167.236.125/3210.167.236.125 – 10.167.236.12510.167.236.125
12710.167.236.126/3210.167.236.126 – 10.167.236.12610.167.236.126
12810.167.236.127/3210.167.236.127 – 10.167.236.12710.167.236.127
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 →