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)10.167.186.0/25
network10.167.186.0/25
broadcast10.167.186.127
first host10.167.186.1
last host10.167.186.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.186.0/25
address00001010.10100111.10111010.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.10111010.00000000
broadcast00001010.10100111.10111010.01111111
green = network part, grey = host part
hex0x0aa7ba00
decimal178764288
reverse dns0.186.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:ba00

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.186.0/3210.167.186.0 – 10.167.186.010.167.186.0
210.167.186.1/3210.167.186.1 – 10.167.186.110.167.186.1
310.167.186.2/3210.167.186.2 – 10.167.186.210.167.186.2
410.167.186.3/3210.167.186.3 – 10.167.186.310.167.186.3
510.167.186.4/3210.167.186.4 – 10.167.186.410.167.186.4
610.167.186.5/3210.167.186.5 – 10.167.186.510.167.186.5
710.167.186.6/3210.167.186.6 – 10.167.186.610.167.186.6
810.167.186.7/3210.167.186.7 – 10.167.186.710.167.186.7
910.167.186.8/3210.167.186.8 – 10.167.186.810.167.186.8
1010.167.186.9/3210.167.186.9 – 10.167.186.910.167.186.9
1110.167.186.10/3210.167.186.10 – 10.167.186.1010.167.186.10
1210.167.186.11/3210.167.186.11 – 10.167.186.1110.167.186.11
1310.167.186.12/3210.167.186.12 – 10.167.186.1210.167.186.12
1410.167.186.13/3210.167.186.13 – 10.167.186.1310.167.186.13
1510.167.186.14/3210.167.186.14 – 10.167.186.1410.167.186.14
1610.167.186.15/3210.167.186.15 – 10.167.186.1510.167.186.15
1710.167.186.16/3210.167.186.16 – 10.167.186.1610.167.186.16
1810.167.186.17/3210.167.186.17 – 10.167.186.1710.167.186.17
1910.167.186.18/3210.167.186.18 – 10.167.186.1810.167.186.18
2010.167.186.19/3210.167.186.19 – 10.167.186.1910.167.186.19
2110.167.186.20/3210.167.186.20 – 10.167.186.2010.167.186.20
2210.167.186.21/3210.167.186.21 – 10.167.186.2110.167.186.21
2310.167.186.22/3210.167.186.22 – 10.167.186.2210.167.186.22
2410.167.186.23/3210.167.186.23 – 10.167.186.2310.167.186.23
2510.167.186.24/3210.167.186.24 – 10.167.186.2410.167.186.24
2610.167.186.25/3210.167.186.25 – 10.167.186.2510.167.186.25
2710.167.186.26/3210.167.186.26 – 10.167.186.2610.167.186.26
2810.167.186.27/3210.167.186.27 – 10.167.186.2710.167.186.27
2910.167.186.28/3210.167.186.28 – 10.167.186.2810.167.186.28
3010.167.186.29/3210.167.186.29 – 10.167.186.2910.167.186.29
3110.167.186.30/3210.167.186.30 – 10.167.186.3010.167.186.30
3210.167.186.31/3210.167.186.31 – 10.167.186.3110.167.186.31
3310.167.186.32/3210.167.186.32 – 10.167.186.3210.167.186.32
3410.167.186.33/3210.167.186.33 – 10.167.186.3310.167.186.33
3510.167.186.34/3210.167.186.34 – 10.167.186.3410.167.186.34
3610.167.186.35/3210.167.186.35 – 10.167.186.3510.167.186.35
3710.167.186.36/3210.167.186.36 – 10.167.186.3610.167.186.36
3810.167.186.37/3210.167.186.37 – 10.167.186.3710.167.186.37
3910.167.186.38/3210.167.186.38 – 10.167.186.3810.167.186.38
4010.167.186.39/3210.167.186.39 – 10.167.186.3910.167.186.39
4110.167.186.40/3210.167.186.40 – 10.167.186.4010.167.186.40
4210.167.186.41/3210.167.186.41 – 10.167.186.4110.167.186.41
4310.167.186.42/3210.167.186.42 – 10.167.186.4210.167.186.42
4410.167.186.43/3210.167.186.43 – 10.167.186.4310.167.186.43
4510.167.186.44/3210.167.186.44 – 10.167.186.4410.167.186.44
4610.167.186.45/3210.167.186.45 – 10.167.186.4510.167.186.45
4710.167.186.46/3210.167.186.46 – 10.167.186.4610.167.186.46
4810.167.186.47/3210.167.186.47 – 10.167.186.4710.167.186.47
4910.167.186.48/3210.167.186.48 – 10.167.186.4810.167.186.48
5010.167.186.49/3210.167.186.49 – 10.167.186.4910.167.186.49
5110.167.186.50/3210.167.186.50 – 10.167.186.5010.167.186.50
5210.167.186.51/3210.167.186.51 – 10.167.186.5110.167.186.51
5310.167.186.52/3210.167.186.52 – 10.167.186.5210.167.186.52
5410.167.186.53/3210.167.186.53 – 10.167.186.5310.167.186.53
5510.167.186.54/3210.167.186.54 – 10.167.186.5410.167.186.54
5610.167.186.55/3210.167.186.55 – 10.167.186.5510.167.186.55
5710.167.186.56/3210.167.186.56 – 10.167.186.5610.167.186.56
5810.167.186.57/3210.167.186.57 – 10.167.186.5710.167.186.57
5910.167.186.58/3210.167.186.58 – 10.167.186.5810.167.186.58
6010.167.186.59/3210.167.186.59 – 10.167.186.5910.167.186.59
6110.167.186.60/3210.167.186.60 – 10.167.186.6010.167.186.60
6210.167.186.61/3210.167.186.61 – 10.167.186.6110.167.186.61
6310.167.186.62/3210.167.186.62 – 10.167.186.6210.167.186.62
6410.167.186.63/3210.167.186.63 – 10.167.186.6310.167.186.63
6510.167.186.64/3210.167.186.64 – 10.167.186.6410.167.186.64
6610.167.186.65/3210.167.186.65 – 10.167.186.6510.167.186.65
6710.167.186.66/3210.167.186.66 – 10.167.186.6610.167.186.66
6810.167.186.67/3210.167.186.67 – 10.167.186.6710.167.186.67
6910.167.186.68/3210.167.186.68 – 10.167.186.6810.167.186.68
7010.167.186.69/3210.167.186.69 – 10.167.186.6910.167.186.69
7110.167.186.70/3210.167.186.70 – 10.167.186.7010.167.186.70
7210.167.186.71/3210.167.186.71 – 10.167.186.7110.167.186.71
7310.167.186.72/3210.167.186.72 – 10.167.186.7210.167.186.72
7410.167.186.73/3210.167.186.73 – 10.167.186.7310.167.186.73
7510.167.186.74/3210.167.186.74 – 10.167.186.7410.167.186.74
7610.167.186.75/3210.167.186.75 – 10.167.186.7510.167.186.75
7710.167.186.76/3210.167.186.76 – 10.167.186.7610.167.186.76
7810.167.186.77/3210.167.186.77 – 10.167.186.7710.167.186.77
7910.167.186.78/3210.167.186.78 – 10.167.186.7810.167.186.78
8010.167.186.79/3210.167.186.79 – 10.167.186.7910.167.186.79
8110.167.186.80/3210.167.186.80 – 10.167.186.8010.167.186.80
8210.167.186.81/3210.167.186.81 – 10.167.186.8110.167.186.81
8310.167.186.82/3210.167.186.82 – 10.167.186.8210.167.186.82
8410.167.186.83/3210.167.186.83 – 10.167.186.8310.167.186.83
8510.167.186.84/3210.167.186.84 – 10.167.186.8410.167.186.84
8610.167.186.85/3210.167.186.85 – 10.167.186.8510.167.186.85
8710.167.186.86/3210.167.186.86 – 10.167.186.8610.167.186.86
8810.167.186.87/3210.167.186.87 – 10.167.186.8710.167.186.87
8910.167.186.88/3210.167.186.88 – 10.167.186.8810.167.186.88
9010.167.186.89/3210.167.186.89 – 10.167.186.8910.167.186.89
9110.167.186.90/3210.167.186.90 – 10.167.186.9010.167.186.90
9210.167.186.91/3210.167.186.91 – 10.167.186.9110.167.186.91
9310.167.186.92/3210.167.186.92 – 10.167.186.9210.167.186.92
9410.167.186.93/3210.167.186.93 – 10.167.186.9310.167.186.93
9510.167.186.94/3210.167.186.94 – 10.167.186.9410.167.186.94
9610.167.186.95/3210.167.186.95 – 10.167.186.9510.167.186.95
9710.167.186.96/3210.167.186.96 – 10.167.186.9610.167.186.96
9810.167.186.97/3210.167.186.97 – 10.167.186.9710.167.186.97
9910.167.186.98/3210.167.186.98 – 10.167.186.9810.167.186.98
10010.167.186.99/3210.167.186.99 – 10.167.186.9910.167.186.99
10110.167.186.100/3210.167.186.100 – 10.167.186.10010.167.186.100
10210.167.186.101/3210.167.186.101 – 10.167.186.10110.167.186.101
10310.167.186.102/3210.167.186.102 – 10.167.186.10210.167.186.102
10410.167.186.103/3210.167.186.103 – 10.167.186.10310.167.186.103
10510.167.186.104/3210.167.186.104 – 10.167.186.10410.167.186.104
10610.167.186.105/3210.167.186.105 – 10.167.186.10510.167.186.105
10710.167.186.106/3210.167.186.106 – 10.167.186.10610.167.186.106
10810.167.186.107/3210.167.186.107 – 10.167.186.10710.167.186.107
10910.167.186.108/3210.167.186.108 – 10.167.186.10810.167.186.108
11010.167.186.109/3210.167.186.109 – 10.167.186.10910.167.186.109
11110.167.186.110/3210.167.186.110 – 10.167.186.11010.167.186.110
11210.167.186.111/3210.167.186.111 – 10.167.186.11110.167.186.111
11310.167.186.112/3210.167.186.112 – 10.167.186.11210.167.186.112
11410.167.186.113/3210.167.186.113 – 10.167.186.11310.167.186.113
11510.167.186.114/3210.167.186.114 – 10.167.186.11410.167.186.114
11610.167.186.115/3210.167.186.115 – 10.167.186.11510.167.186.115
11710.167.186.116/3210.167.186.116 – 10.167.186.11610.167.186.116
11810.167.186.117/3210.167.186.117 – 10.167.186.11710.167.186.117
11910.167.186.118/3210.167.186.118 – 10.167.186.11810.167.186.118
12010.167.186.119/3210.167.186.119 – 10.167.186.11910.167.186.119
12110.167.186.120/3210.167.186.120 – 10.167.186.12010.167.186.120
12210.167.186.121/3210.167.186.121 – 10.167.186.12110.167.186.121
12310.167.186.122/3210.167.186.122 – 10.167.186.12210.167.186.122
12410.167.186.123/3210.167.186.123 – 10.167.186.12310.167.186.123
12510.167.186.124/3210.167.186.124 – 10.167.186.12410.167.186.124
12610.167.186.125/3210.167.186.125 – 10.167.186.12510.167.186.125
12710.167.186.126/3210.167.186.126 – 10.167.186.12610.167.186.126
12810.167.186.127/3210.167.186.127 – 10.167.186.12710.167.186.127
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 →