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)10.97.75.0/25
network10.97.75.0/25
broadcast10.97.75.127
first host10.97.75.1
last host10.97.75.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.97.75.0/25
address00001010.01100001.01001011.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01100001.01001011.00000000
broadcast00001010.01100001.01001011.01111111
green = network part, grey = host part
hex0x0a614b00
decimal174148352
reverse dns0.75.97.10.in-addr.arpa
ipv4-mapped::ffff:a61:4b00

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.97.75.0/3210.97.75.0 – 10.97.75.010.97.75.0
210.97.75.1/3210.97.75.1 – 10.97.75.110.97.75.1
310.97.75.2/3210.97.75.2 – 10.97.75.210.97.75.2
410.97.75.3/3210.97.75.3 – 10.97.75.310.97.75.3
510.97.75.4/3210.97.75.4 – 10.97.75.410.97.75.4
610.97.75.5/3210.97.75.5 – 10.97.75.510.97.75.5
710.97.75.6/3210.97.75.6 – 10.97.75.610.97.75.6
810.97.75.7/3210.97.75.7 – 10.97.75.710.97.75.7
910.97.75.8/3210.97.75.8 – 10.97.75.810.97.75.8
1010.97.75.9/3210.97.75.9 – 10.97.75.910.97.75.9
1110.97.75.10/3210.97.75.10 – 10.97.75.1010.97.75.10
1210.97.75.11/3210.97.75.11 – 10.97.75.1110.97.75.11
1310.97.75.12/3210.97.75.12 – 10.97.75.1210.97.75.12
1410.97.75.13/3210.97.75.13 – 10.97.75.1310.97.75.13
1510.97.75.14/3210.97.75.14 – 10.97.75.1410.97.75.14
1610.97.75.15/3210.97.75.15 – 10.97.75.1510.97.75.15
1710.97.75.16/3210.97.75.16 – 10.97.75.1610.97.75.16
1810.97.75.17/3210.97.75.17 – 10.97.75.1710.97.75.17
1910.97.75.18/3210.97.75.18 – 10.97.75.1810.97.75.18
2010.97.75.19/3210.97.75.19 – 10.97.75.1910.97.75.19
2110.97.75.20/3210.97.75.20 – 10.97.75.2010.97.75.20
2210.97.75.21/3210.97.75.21 – 10.97.75.2110.97.75.21
2310.97.75.22/3210.97.75.22 – 10.97.75.2210.97.75.22
2410.97.75.23/3210.97.75.23 – 10.97.75.2310.97.75.23
2510.97.75.24/3210.97.75.24 – 10.97.75.2410.97.75.24
2610.97.75.25/3210.97.75.25 – 10.97.75.2510.97.75.25
2710.97.75.26/3210.97.75.26 – 10.97.75.2610.97.75.26
2810.97.75.27/3210.97.75.27 – 10.97.75.2710.97.75.27
2910.97.75.28/3210.97.75.28 – 10.97.75.2810.97.75.28
3010.97.75.29/3210.97.75.29 – 10.97.75.2910.97.75.29
3110.97.75.30/3210.97.75.30 – 10.97.75.3010.97.75.30
3210.97.75.31/3210.97.75.31 – 10.97.75.3110.97.75.31
3310.97.75.32/3210.97.75.32 – 10.97.75.3210.97.75.32
3410.97.75.33/3210.97.75.33 – 10.97.75.3310.97.75.33
3510.97.75.34/3210.97.75.34 – 10.97.75.3410.97.75.34
3610.97.75.35/3210.97.75.35 – 10.97.75.3510.97.75.35
3710.97.75.36/3210.97.75.36 – 10.97.75.3610.97.75.36
3810.97.75.37/3210.97.75.37 – 10.97.75.3710.97.75.37
3910.97.75.38/3210.97.75.38 – 10.97.75.3810.97.75.38
4010.97.75.39/3210.97.75.39 – 10.97.75.3910.97.75.39
4110.97.75.40/3210.97.75.40 – 10.97.75.4010.97.75.40
4210.97.75.41/3210.97.75.41 – 10.97.75.4110.97.75.41
4310.97.75.42/3210.97.75.42 – 10.97.75.4210.97.75.42
4410.97.75.43/3210.97.75.43 – 10.97.75.4310.97.75.43
4510.97.75.44/3210.97.75.44 – 10.97.75.4410.97.75.44
4610.97.75.45/3210.97.75.45 – 10.97.75.4510.97.75.45
4710.97.75.46/3210.97.75.46 – 10.97.75.4610.97.75.46
4810.97.75.47/3210.97.75.47 – 10.97.75.4710.97.75.47
4910.97.75.48/3210.97.75.48 – 10.97.75.4810.97.75.48
5010.97.75.49/3210.97.75.49 – 10.97.75.4910.97.75.49
5110.97.75.50/3210.97.75.50 – 10.97.75.5010.97.75.50
5210.97.75.51/3210.97.75.51 – 10.97.75.5110.97.75.51
5310.97.75.52/3210.97.75.52 – 10.97.75.5210.97.75.52
5410.97.75.53/3210.97.75.53 – 10.97.75.5310.97.75.53
5510.97.75.54/3210.97.75.54 – 10.97.75.5410.97.75.54
5610.97.75.55/3210.97.75.55 – 10.97.75.5510.97.75.55
5710.97.75.56/3210.97.75.56 – 10.97.75.5610.97.75.56
5810.97.75.57/3210.97.75.57 – 10.97.75.5710.97.75.57
5910.97.75.58/3210.97.75.58 – 10.97.75.5810.97.75.58
6010.97.75.59/3210.97.75.59 – 10.97.75.5910.97.75.59
6110.97.75.60/3210.97.75.60 – 10.97.75.6010.97.75.60
6210.97.75.61/3210.97.75.61 – 10.97.75.6110.97.75.61
6310.97.75.62/3210.97.75.62 – 10.97.75.6210.97.75.62
6410.97.75.63/3210.97.75.63 – 10.97.75.6310.97.75.63
6510.97.75.64/3210.97.75.64 – 10.97.75.6410.97.75.64
6610.97.75.65/3210.97.75.65 – 10.97.75.6510.97.75.65
6710.97.75.66/3210.97.75.66 – 10.97.75.6610.97.75.66
6810.97.75.67/3210.97.75.67 – 10.97.75.6710.97.75.67
6910.97.75.68/3210.97.75.68 – 10.97.75.6810.97.75.68
7010.97.75.69/3210.97.75.69 – 10.97.75.6910.97.75.69
7110.97.75.70/3210.97.75.70 – 10.97.75.7010.97.75.70
7210.97.75.71/3210.97.75.71 – 10.97.75.7110.97.75.71
7310.97.75.72/3210.97.75.72 – 10.97.75.7210.97.75.72
7410.97.75.73/3210.97.75.73 – 10.97.75.7310.97.75.73
7510.97.75.74/3210.97.75.74 – 10.97.75.7410.97.75.74
7610.97.75.75/3210.97.75.75 – 10.97.75.7510.97.75.75
7710.97.75.76/3210.97.75.76 – 10.97.75.7610.97.75.76
7810.97.75.77/3210.97.75.77 – 10.97.75.7710.97.75.77
7910.97.75.78/3210.97.75.78 – 10.97.75.7810.97.75.78
8010.97.75.79/3210.97.75.79 – 10.97.75.7910.97.75.79
8110.97.75.80/3210.97.75.80 – 10.97.75.8010.97.75.80
8210.97.75.81/3210.97.75.81 – 10.97.75.8110.97.75.81
8310.97.75.82/3210.97.75.82 – 10.97.75.8210.97.75.82
8410.97.75.83/3210.97.75.83 – 10.97.75.8310.97.75.83
8510.97.75.84/3210.97.75.84 – 10.97.75.8410.97.75.84
8610.97.75.85/3210.97.75.85 – 10.97.75.8510.97.75.85
8710.97.75.86/3210.97.75.86 – 10.97.75.8610.97.75.86
8810.97.75.87/3210.97.75.87 – 10.97.75.8710.97.75.87
8910.97.75.88/3210.97.75.88 – 10.97.75.8810.97.75.88
9010.97.75.89/3210.97.75.89 – 10.97.75.8910.97.75.89
9110.97.75.90/3210.97.75.90 – 10.97.75.9010.97.75.90
9210.97.75.91/3210.97.75.91 – 10.97.75.9110.97.75.91
9310.97.75.92/3210.97.75.92 – 10.97.75.9210.97.75.92
9410.97.75.93/3210.97.75.93 – 10.97.75.9310.97.75.93
9510.97.75.94/3210.97.75.94 – 10.97.75.9410.97.75.94
9610.97.75.95/3210.97.75.95 – 10.97.75.9510.97.75.95
9710.97.75.96/3210.97.75.96 – 10.97.75.9610.97.75.96
9810.97.75.97/3210.97.75.97 – 10.97.75.9710.97.75.97
9910.97.75.98/3210.97.75.98 – 10.97.75.9810.97.75.98
10010.97.75.99/3210.97.75.99 – 10.97.75.9910.97.75.99
10110.97.75.100/3210.97.75.100 – 10.97.75.10010.97.75.100
10210.97.75.101/3210.97.75.101 – 10.97.75.10110.97.75.101
10310.97.75.102/3210.97.75.102 – 10.97.75.10210.97.75.102
10410.97.75.103/3210.97.75.103 – 10.97.75.10310.97.75.103
10510.97.75.104/3210.97.75.104 – 10.97.75.10410.97.75.104
10610.97.75.105/3210.97.75.105 – 10.97.75.10510.97.75.105
10710.97.75.106/3210.97.75.106 – 10.97.75.10610.97.75.106
10810.97.75.107/3210.97.75.107 – 10.97.75.10710.97.75.107
10910.97.75.108/3210.97.75.108 – 10.97.75.10810.97.75.108
11010.97.75.109/3210.97.75.109 – 10.97.75.10910.97.75.109
11110.97.75.110/3210.97.75.110 – 10.97.75.11010.97.75.110
11210.97.75.111/3210.97.75.111 – 10.97.75.11110.97.75.111
11310.97.75.112/3210.97.75.112 – 10.97.75.11210.97.75.112
11410.97.75.113/3210.97.75.113 – 10.97.75.11310.97.75.113
11510.97.75.114/3210.97.75.114 – 10.97.75.11410.97.75.114
11610.97.75.115/3210.97.75.115 – 10.97.75.11510.97.75.115
11710.97.75.116/3210.97.75.116 – 10.97.75.11610.97.75.116
11810.97.75.117/3210.97.75.117 – 10.97.75.11710.97.75.117
11910.97.75.118/3210.97.75.118 – 10.97.75.11810.97.75.118
12010.97.75.119/3210.97.75.119 – 10.97.75.11910.97.75.119
12110.97.75.120/3210.97.75.120 – 10.97.75.12010.97.75.120
12210.97.75.121/3210.97.75.121 – 10.97.75.12110.97.75.121
12310.97.75.122/3210.97.75.122 – 10.97.75.12210.97.75.122
12410.97.75.123/3210.97.75.123 – 10.97.75.12310.97.75.123
12510.97.75.124/3210.97.75.124 – 10.97.75.12410.97.75.124
12610.97.75.125/3210.97.75.125 – 10.97.75.12510.97.75.125
12710.97.75.126/3210.97.75.126 – 10.97.75.12610.97.75.126
12810.97.75.127/3210.97.75.127 – 10.97.75.12710.97.75.127
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 →