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)10.7.34.0/25
network10.7.34.0/25
broadcast10.7.34.127
first host10.7.34.1
last host10.7.34.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.7.34.0/25
address00001010.00000111.00100010.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00000111.00100010.00000000
broadcast00001010.00000111.00100010.01111111
green = network part, grey = host part
hex0x0a072200
decimal168239616
reverse dns0.34.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:2200

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.7.34.0/3210.7.34.0 – 10.7.34.010.7.34.0
210.7.34.1/3210.7.34.1 – 10.7.34.110.7.34.1
310.7.34.2/3210.7.34.2 – 10.7.34.210.7.34.2
410.7.34.3/3210.7.34.3 – 10.7.34.310.7.34.3
510.7.34.4/3210.7.34.4 – 10.7.34.410.7.34.4
610.7.34.5/3210.7.34.5 – 10.7.34.510.7.34.5
710.7.34.6/3210.7.34.6 – 10.7.34.610.7.34.6
810.7.34.7/3210.7.34.7 – 10.7.34.710.7.34.7
910.7.34.8/3210.7.34.8 – 10.7.34.810.7.34.8
1010.7.34.9/3210.7.34.9 – 10.7.34.910.7.34.9
1110.7.34.10/3210.7.34.10 – 10.7.34.1010.7.34.10
1210.7.34.11/3210.7.34.11 – 10.7.34.1110.7.34.11
1310.7.34.12/3210.7.34.12 – 10.7.34.1210.7.34.12
1410.7.34.13/3210.7.34.13 – 10.7.34.1310.7.34.13
1510.7.34.14/3210.7.34.14 – 10.7.34.1410.7.34.14
1610.7.34.15/3210.7.34.15 – 10.7.34.1510.7.34.15
1710.7.34.16/3210.7.34.16 – 10.7.34.1610.7.34.16
1810.7.34.17/3210.7.34.17 – 10.7.34.1710.7.34.17
1910.7.34.18/3210.7.34.18 – 10.7.34.1810.7.34.18
2010.7.34.19/3210.7.34.19 – 10.7.34.1910.7.34.19
2110.7.34.20/3210.7.34.20 – 10.7.34.2010.7.34.20
2210.7.34.21/3210.7.34.21 – 10.7.34.2110.7.34.21
2310.7.34.22/3210.7.34.22 – 10.7.34.2210.7.34.22
2410.7.34.23/3210.7.34.23 – 10.7.34.2310.7.34.23
2510.7.34.24/3210.7.34.24 – 10.7.34.2410.7.34.24
2610.7.34.25/3210.7.34.25 – 10.7.34.2510.7.34.25
2710.7.34.26/3210.7.34.26 – 10.7.34.2610.7.34.26
2810.7.34.27/3210.7.34.27 – 10.7.34.2710.7.34.27
2910.7.34.28/3210.7.34.28 – 10.7.34.2810.7.34.28
3010.7.34.29/3210.7.34.29 – 10.7.34.2910.7.34.29
3110.7.34.30/3210.7.34.30 – 10.7.34.3010.7.34.30
3210.7.34.31/3210.7.34.31 – 10.7.34.3110.7.34.31
3310.7.34.32/3210.7.34.32 – 10.7.34.3210.7.34.32
3410.7.34.33/3210.7.34.33 – 10.7.34.3310.7.34.33
3510.7.34.34/3210.7.34.34 – 10.7.34.3410.7.34.34
3610.7.34.35/3210.7.34.35 – 10.7.34.3510.7.34.35
3710.7.34.36/3210.7.34.36 – 10.7.34.3610.7.34.36
3810.7.34.37/3210.7.34.37 – 10.7.34.3710.7.34.37
3910.7.34.38/3210.7.34.38 – 10.7.34.3810.7.34.38
4010.7.34.39/3210.7.34.39 – 10.7.34.3910.7.34.39
4110.7.34.40/3210.7.34.40 – 10.7.34.4010.7.34.40
4210.7.34.41/3210.7.34.41 – 10.7.34.4110.7.34.41
4310.7.34.42/3210.7.34.42 – 10.7.34.4210.7.34.42
4410.7.34.43/3210.7.34.43 – 10.7.34.4310.7.34.43
4510.7.34.44/3210.7.34.44 – 10.7.34.4410.7.34.44
4610.7.34.45/3210.7.34.45 – 10.7.34.4510.7.34.45
4710.7.34.46/3210.7.34.46 – 10.7.34.4610.7.34.46
4810.7.34.47/3210.7.34.47 – 10.7.34.4710.7.34.47
4910.7.34.48/3210.7.34.48 – 10.7.34.4810.7.34.48
5010.7.34.49/3210.7.34.49 – 10.7.34.4910.7.34.49
5110.7.34.50/3210.7.34.50 – 10.7.34.5010.7.34.50
5210.7.34.51/3210.7.34.51 – 10.7.34.5110.7.34.51
5310.7.34.52/3210.7.34.52 – 10.7.34.5210.7.34.52
5410.7.34.53/3210.7.34.53 – 10.7.34.5310.7.34.53
5510.7.34.54/3210.7.34.54 – 10.7.34.5410.7.34.54
5610.7.34.55/3210.7.34.55 – 10.7.34.5510.7.34.55
5710.7.34.56/3210.7.34.56 – 10.7.34.5610.7.34.56
5810.7.34.57/3210.7.34.57 – 10.7.34.5710.7.34.57
5910.7.34.58/3210.7.34.58 – 10.7.34.5810.7.34.58
6010.7.34.59/3210.7.34.59 – 10.7.34.5910.7.34.59
6110.7.34.60/3210.7.34.60 – 10.7.34.6010.7.34.60
6210.7.34.61/3210.7.34.61 – 10.7.34.6110.7.34.61
6310.7.34.62/3210.7.34.62 – 10.7.34.6210.7.34.62
6410.7.34.63/3210.7.34.63 – 10.7.34.6310.7.34.63
6510.7.34.64/3210.7.34.64 – 10.7.34.6410.7.34.64
6610.7.34.65/3210.7.34.65 – 10.7.34.6510.7.34.65
6710.7.34.66/3210.7.34.66 – 10.7.34.6610.7.34.66
6810.7.34.67/3210.7.34.67 – 10.7.34.6710.7.34.67
6910.7.34.68/3210.7.34.68 – 10.7.34.6810.7.34.68
7010.7.34.69/3210.7.34.69 – 10.7.34.6910.7.34.69
7110.7.34.70/3210.7.34.70 – 10.7.34.7010.7.34.70
7210.7.34.71/3210.7.34.71 – 10.7.34.7110.7.34.71
7310.7.34.72/3210.7.34.72 – 10.7.34.7210.7.34.72
7410.7.34.73/3210.7.34.73 – 10.7.34.7310.7.34.73
7510.7.34.74/3210.7.34.74 – 10.7.34.7410.7.34.74
7610.7.34.75/3210.7.34.75 – 10.7.34.7510.7.34.75
7710.7.34.76/3210.7.34.76 – 10.7.34.7610.7.34.76
7810.7.34.77/3210.7.34.77 – 10.7.34.7710.7.34.77
7910.7.34.78/3210.7.34.78 – 10.7.34.7810.7.34.78
8010.7.34.79/3210.7.34.79 – 10.7.34.7910.7.34.79
8110.7.34.80/3210.7.34.80 – 10.7.34.8010.7.34.80
8210.7.34.81/3210.7.34.81 – 10.7.34.8110.7.34.81
8310.7.34.82/3210.7.34.82 – 10.7.34.8210.7.34.82
8410.7.34.83/3210.7.34.83 – 10.7.34.8310.7.34.83
8510.7.34.84/3210.7.34.84 – 10.7.34.8410.7.34.84
8610.7.34.85/3210.7.34.85 – 10.7.34.8510.7.34.85
8710.7.34.86/3210.7.34.86 – 10.7.34.8610.7.34.86
8810.7.34.87/3210.7.34.87 – 10.7.34.8710.7.34.87
8910.7.34.88/3210.7.34.88 – 10.7.34.8810.7.34.88
9010.7.34.89/3210.7.34.89 – 10.7.34.8910.7.34.89
9110.7.34.90/3210.7.34.90 – 10.7.34.9010.7.34.90
9210.7.34.91/3210.7.34.91 – 10.7.34.9110.7.34.91
9310.7.34.92/3210.7.34.92 – 10.7.34.9210.7.34.92
9410.7.34.93/3210.7.34.93 – 10.7.34.9310.7.34.93
9510.7.34.94/3210.7.34.94 – 10.7.34.9410.7.34.94
9610.7.34.95/3210.7.34.95 – 10.7.34.9510.7.34.95
9710.7.34.96/3210.7.34.96 – 10.7.34.9610.7.34.96
9810.7.34.97/3210.7.34.97 – 10.7.34.9710.7.34.97
9910.7.34.98/3210.7.34.98 – 10.7.34.9810.7.34.98
10010.7.34.99/3210.7.34.99 – 10.7.34.9910.7.34.99
10110.7.34.100/3210.7.34.100 – 10.7.34.10010.7.34.100
10210.7.34.101/3210.7.34.101 – 10.7.34.10110.7.34.101
10310.7.34.102/3210.7.34.102 – 10.7.34.10210.7.34.102
10410.7.34.103/3210.7.34.103 – 10.7.34.10310.7.34.103
10510.7.34.104/3210.7.34.104 – 10.7.34.10410.7.34.104
10610.7.34.105/3210.7.34.105 – 10.7.34.10510.7.34.105
10710.7.34.106/3210.7.34.106 – 10.7.34.10610.7.34.106
10810.7.34.107/3210.7.34.107 – 10.7.34.10710.7.34.107
10910.7.34.108/3210.7.34.108 – 10.7.34.10810.7.34.108
11010.7.34.109/3210.7.34.109 – 10.7.34.10910.7.34.109
11110.7.34.110/3210.7.34.110 – 10.7.34.11010.7.34.110
11210.7.34.111/3210.7.34.111 – 10.7.34.11110.7.34.111
11310.7.34.112/3210.7.34.112 – 10.7.34.11210.7.34.112
11410.7.34.113/3210.7.34.113 – 10.7.34.11310.7.34.113
11510.7.34.114/3210.7.34.114 – 10.7.34.11410.7.34.114
11610.7.34.115/3210.7.34.115 – 10.7.34.11510.7.34.115
11710.7.34.116/3210.7.34.116 – 10.7.34.11610.7.34.116
11810.7.34.117/3210.7.34.117 – 10.7.34.11710.7.34.117
11910.7.34.118/3210.7.34.118 – 10.7.34.11810.7.34.118
12010.7.34.119/3210.7.34.119 – 10.7.34.11910.7.34.119
12110.7.34.120/3210.7.34.120 – 10.7.34.12010.7.34.120
12210.7.34.121/3210.7.34.121 – 10.7.34.12110.7.34.121
12310.7.34.122/3210.7.34.122 – 10.7.34.12210.7.34.122
12410.7.34.123/3210.7.34.123 – 10.7.34.12310.7.34.123
12510.7.34.124/3210.7.34.124 – 10.7.34.12410.7.34.124
12610.7.34.125/3210.7.34.125 – 10.7.34.12510.7.34.125
12710.7.34.126/3210.7.34.126 – 10.7.34.12610.7.34.126
12810.7.34.127/3210.7.34.127 – 10.7.34.12710.7.34.127
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 →