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)10.167.135.0/25
network10.167.135.0/25
broadcast10.167.135.127
first host10.167.135.1
last host10.167.135.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.135.0/25
address00001010.10100111.10000111.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.10000111.00000000
broadcast00001010.10100111.10000111.01111111
green = network part, grey = host part
hex0x0aa78700
decimal178751232
reverse dns0.135.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:8700

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.135.0/3210.167.135.0 – 10.167.135.010.167.135.0
210.167.135.1/3210.167.135.1 – 10.167.135.110.167.135.1
310.167.135.2/3210.167.135.2 – 10.167.135.210.167.135.2
410.167.135.3/3210.167.135.3 – 10.167.135.310.167.135.3
510.167.135.4/3210.167.135.4 – 10.167.135.410.167.135.4
610.167.135.5/3210.167.135.5 – 10.167.135.510.167.135.5
710.167.135.6/3210.167.135.6 – 10.167.135.610.167.135.6
810.167.135.7/3210.167.135.7 – 10.167.135.710.167.135.7
910.167.135.8/3210.167.135.8 – 10.167.135.810.167.135.8
1010.167.135.9/3210.167.135.9 – 10.167.135.910.167.135.9
1110.167.135.10/3210.167.135.10 – 10.167.135.1010.167.135.10
1210.167.135.11/3210.167.135.11 – 10.167.135.1110.167.135.11
1310.167.135.12/3210.167.135.12 – 10.167.135.1210.167.135.12
1410.167.135.13/3210.167.135.13 – 10.167.135.1310.167.135.13
1510.167.135.14/3210.167.135.14 – 10.167.135.1410.167.135.14
1610.167.135.15/3210.167.135.15 – 10.167.135.1510.167.135.15
1710.167.135.16/3210.167.135.16 – 10.167.135.1610.167.135.16
1810.167.135.17/3210.167.135.17 – 10.167.135.1710.167.135.17
1910.167.135.18/3210.167.135.18 – 10.167.135.1810.167.135.18
2010.167.135.19/3210.167.135.19 – 10.167.135.1910.167.135.19
2110.167.135.20/3210.167.135.20 – 10.167.135.2010.167.135.20
2210.167.135.21/3210.167.135.21 – 10.167.135.2110.167.135.21
2310.167.135.22/3210.167.135.22 – 10.167.135.2210.167.135.22
2410.167.135.23/3210.167.135.23 – 10.167.135.2310.167.135.23
2510.167.135.24/3210.167.135.24 – 10.167.135.2410.167.135.24
2610.167.135.25/3210.167.135.25 – 10.167.135.2510.167.135.25
2710.167.135.26/3210.167.135.26 – 10.167.135.2610.167.135.26
2810.167.135.27/3210.167.135.27 – 10.167.135.2710.167.135.27
2910.167.135.28/3210.167.135.28 – 10.167.135.2810.167.135.28
3010.167.135.29/3210.167.135.29 – 10.167.135.2910.167.135.29
3110.167.135.30/3210.167.135.30 – 10.167.135.3010.167.135.30
3210.167.135.31/3210.167.135.31 – 10.167.135.3110.167.135.31
3310.167.135.32/3210.167.135.32 – 10.167.135.3210.167.135.32
3410.167.135.33/3210.167.135.33 – 10.167.135.3310.167.135.33
3510.167.135.34/3210.167.135.34 – 10.167.135.3410.167.135.34
3610.167.135.35/3210.167.135.35 – 10.167.135.3510.167.135.35
3710.167.135.36/3210.167.135.36 – 10.167.135.3610.167.135.36
3810.167.135.37/3210.167.135.37 – 10.167.135.3710.167.135.37
3910.167.135.38/3210.167.135.38 – 10.167.135.3810.167.135.38
4010.167.135.39/3210.167.135.39 – 10.167.135.3910.167.135.39
4110.167.135.40/3210.167.135.40 – 10.167.135.4010.167.135.40
4210.167.135.41/3210.167.135.41 – 10.167.135.4110.167.135.41
4310.167.135.42/3210.167.135.42 – 10.167.135.4210.167.135.42
4410.167.135.43/3210.167.135.43 – 10.167.135.4310.167.135.43
4510.167.135.44/3210.167.135.44 – 10.167.135.4410.167.135.44
4610.167.135.45/3210.167.135.45 – 10.167.135.4510.167.135.45
4710.167.135.46/3210.167.135.46 – 10.167.135.4610.167.135.46
4810.167.135.47/3210.167.135.47 – 10.167.135.4710.167.135.47
4910.167.135.48/3210.167.135.48 – 10.167.135.4810.167.135.48
5010.167.135.49/3210.167.135.49 – 10.167.135.4910.167.135.49
5110.167.135.50/3210.167.135.50 – 10.167.135.5010.167.135.50
5210.167.135.51/3210.167.135.51 – 10.167.135.5110.167.135.51
5310.167.135.52/3210.167.135.52 – 10.167.135.5210.167.135.52
5410.167.135.53/3210.167.135.53 – 10.167.135.5310.167.135.53
5510.167.135.54/3210.167.135.54 – 10.167.135.5410.167.135.54
5610.167.135.55/3210.167.135.55 – 10.167.135.5510.167.135.55
5710.167.135.56/3210.167.135.56 – 10.167.135.5610.167.135.56
5810.167.135.57/3210.167.135.57 – 10.167.135.5710.167.135.57
5910.167.135.58/3210.167.135.58 – 10.167.135.5810.167.135.58
6010.167.135.59/3210.167.135.59 – 10.167.135.5910.167.135.59
6110.167.135.60/3210.167.135.60 – 10.167.135.6010.167.135.60
6210.167.135.61/3210.167.135.61 – 10.167.135.6110.167.135.61
6310.167.135.62/3210.167.135.62 – 10.167.135.6210.167.135.62
6410.167.135.63/3210.167.135.63 – 10.167.135.6310.167.135.63
6510.167.135.64/3210.167.135.64 – 10.167.135.6410.167.135.64
6610.167.135.65/3210.167.135.65 – 10.167.135.6510.167.135.65
6710.167.135.66/3210.167.135.66 – 10.167.135.6610.167.135.66
6810.167.135.67/3210.167.135.67 – 10.167.135.6710.167.135.67
6910.167.135.68/3210.167.135.68 – 10.167.135.6810.167.135.68
7010.167.135.69/3210.167.135.69 – 10.167.135.6910.167.135.69
7110.167.135.70/3210.167.135.70 – 10.167.135.7010.167.135.70
7210.167.135.71/3210.167.135.71 – 10.167.135.7110.167.135.71
7310.167.135.72/3210.167.135.72 – 10.167.135.7210.167.135.72
7410.167.135.73/3210.167.135.73 – 10.167.135.7310.167.135.73
7510.167.135.74/3210.167.135.74 – 10.167.135.7410.167.135.74
7610.167.135.75/3210.167.135.75 – 10.167.135.7510.167.135.75
7710.167.135.76/3210.167.135.76 – 10.167.135.7610.167.135.76
7810.167.135.77/3210.167.135.77 – 10.167.135.7710.167.135.77
7910.167.135.78/3210.167.135.78 – 10.167.135.7810.167.135.78
8010.167.135.79/3210.167.135.79 – 10.167.135.7910.167.135.79
8110.167.135.80/3210.167.135.80 – 10.167.135.8010.167.135.80
8210.167.135.81/3210.167.135.81 – 10.167.135.8110.167.135.81
8310.167.135.82/3210.167.135.82 – 10.167.135.8210.167.135.82
8410.167.135.83/3210.167.135.83 – 10.167.135.8310.167.135.83
8510.167.135.84/3210.167.135.84 – 10.167.135.8410.167.135.84
8610.167.135.85/3210.167.135.85 – 10.167.135.8510.167.135.85
8710.167.135.86/3210.167.135.86 – 10.167.135.8610.167.135.86
8810.167.135.87/3210.167.135.87 – 10.167.135.8710.167.135.87
8910.167.135.88/3210.167.135.88 – 10.167.135.8810.167.135.88
9010.167.135.89/3210.167.135.89 – 10.167.135.8910.167.135.89
9110.167.135.90/3210.167.135.90 – 10.167.135.9010.167.135.90
9210.167.135.91/3210.167.135.91 – 10.167.135.9110.167.135.91
9310.167.135.92/3210.167.135.92 – 10.167.135.9210.167.135.92
9410.167.135.93/3210.167.135.93 – 10.167.135.9310.167.135.93
9510.167.135.94/3210.167.135.94 – 10.167.135.9410.167.135.94
9610.167.135.95/3210.167.135.95 – 10.167.135.9510.167.135.95
9710.167.135.96/3210.167.135.96 – 10.167.135.9610.167.135.96
9810.167.135.97/3210.167.135.97 – 10.167.135.9710.167.135.97
9910.167.135.98/3210.167.135.98 – 10.167.135.9810.167.135.98
10010.167.135.99/3210.167.135.99 – 10.167.135.9910.167.135.99
10110.167.135.100/3210.167.135.100 – 10.167.135.10010.167.135.100
10210.167.135.101/3210.167.135.101 – 10.167.135.10110.167.135.101
10310.167.135.102/3210.167.135.102 – 10.167.135.10210.167.135.102
10410.167.135.103/3210.167.135.103 – 10.167.135.10310.167.135.103
10510.167.135.104/3210.167.135.104 – 10.167.135.10410.167.135.104
10610.167.135.105/3210.167.135.105 – 10.167.135.10510.167.135.105
10710.167.135.106/3210.167.135.106 – 10.167.135.10610.167.135.106
10810.167.135.107/3210.167.135.107 – 10.167.135.10710.167.135.107
10910.167.135.108/3210.167.135.108 – 10.167.135.10810.167.135.108
11010.167.135.109/3210.167.135.109 – 10.167.135.10910.167.135.109
11110.167.135.110/3210.167.135.110 – 10.167.135.11010.167.135.110
11210.167.135.111/3210.167.135.111 – 10.167.135.11110.167.135.111
11310.167.135.112/3210.167.135.112 – 10.167.135.11210.167.135.112
11410.167.135.113/3210.167.135.113 – 10.167.135.11310.167.135.113
11510.167.135.114/3210.167.135.114 – 10.167.135.11410.167.135.114
11610.167.135.115/3210.167.135.115 – 10.167.135.11510.167.135.115
11710.167.135.116/3210.167.135.116 – 10.167.135.11610.167.135.116
11810.167.135.117/3210.167.135.117 – 10.167.135.11710.167.135.117
11910.167.135.118/3210.167.135.118 – 10.167.135.11810.167.135.118
12010.167.135.119/3210.167.135.119 – 10.167.135.11910.167.135.119
12110.167.135.120/3210.167.135.120 – 10.167.135.12010.167.135.120
12210.167.135.121/3210.167.135.121 – 10.167.135.12110.167.135.121
12310.167.135.122/3210.167.135.122 – 10.167.135.12210.167.135.122
12410.167.135.123/3210.167.135.123 – 10.167.135.12310.167.135.123
12510.167.135.124/3210.167.135.124 – 10.167.135.12410.167.135.124
12610.167.135.125/3210.167.135.125 – 10.167.135.12510.167.135.125
12710.167.135.126/3210.167.135.126 – 10.167.135.12610.167.135.126
12810.167.135.127/3210.167.135.127 – 10.167.135.12710.167.135.127
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 →