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)10.3.69.0/25
network10.3.69.0/25
broadcast10.3.69.127
first host10.3.69.1
last host10.3.69.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.3.69.0/25
address00001010.00000011.01000101.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00000011.01000101.00000000
broadcast00001010.00000011.01000101.01111111
green = network part, grey = host part
hex0x0a034500
decimal167986432
reverse dns0.69.3.10.in-addr.arpa
ipv4-mapped::ffff:a03:4500

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.3.69.0/3210.3.69.0 – 10.3.69.010.3.69.0
210.3.69.1/3210.3.69.1 – 10.3.69.110.3.69.1
310.3.69.2/3210.3.69.2 – 10.3.69.210.3.69.2
410.3.69.3/3210.3.69.3 – 10.3.69.310.3.69.3
510.3.69.4/3210.3.69.4 – 10.3.69.410.3.69.4
610.3.69.5/3210.3.69.5 – 10.3.69.510.3.69.5
710.3.69.6/3210.3.69.6 – 10.3.69.610.3.69.6
810.3.69.7/3210.3.69.7 – 10.3.69.710.3.69.7
910.3.69.8/3210.3.69.8 – 10.3.69.810.3.69.8
1010.3.69.9/3210.3.69.9 – 10.3.69.910.3.69.9
1110.3.69.10/3210.3.69.10 – 10.3.69.1010.3.69.10
1210.3.69.11/3210.3.69.11 – 10.3.69.1110.3.69.11
1310.3.69.12/3210.3.69.12 – 10.3.69.1210.3.69.12
1410.3.69.13/3210.3.69.13 – 10.3.69.1310.3.69.13
1510.3.69.14/3210.3.69.14 – 10.3.69.1410.3.69.14
1610.3.69.15/3210.3.69.15 – 10.3.69.1510.3.69.15
1710.3.69.16/3210.3.69.16 – 10.3.69.1610.3.69.16
1810.3.69.17/3210.3.69.17 – 10.3.69.1710.3.69.17
1910.3.69.18/3210.3.69.18 – 10.3.69.1810.3.69.18
2010.3.69.19/3210.3.69.19 – 10.3.69.1910.3.69.19
2110.3.69.20/3210.3.69.20 – 10.3.69.2010.3.69.20
2210.3.69.21/3210.3.69.21 – 10.3.69.2110.3.69.21
2310.3.69.22/3210.3.69.22 – 10.3.69.2210.3.69.22
2410.3.69.23/3210.3.69.23 – 10.3.69.2310.3.69.23
2510.3.69.24/3210.3.69.24 – 10.3.69.2410.3.69.24
2610.3.69.25/3210.3.69.25 – 10.3.69.2510.3.69.25
2710.3.69.26/3210.3.69.26 – 10.3.69.2610.3.69.26
2810.3.69.27/3210.3.69.27 – 10.3.69.2710.3.69.27
2910.3.69.28/3210.3.69.28 – 10.3.69.2810.3.69.28
3010.3.69.29/3210.3.69.29 – 10.3.69.2910.3.69.29
3110.3.69.30/3210.3.69.30 – 10.3.69.3010.3.69.30
3210.3.69.31/3210.3.69.31 – 10.3.69.3110.3.69.31
3310.3.69.32/3210.3.69.32 – 10.3.69.3210.3.69.32
3410.3.69.33/3210.3.69.33 – 10.3.69.3310.3.69.33
3510.3.69.34/3210.3.69.34 – 10.3.69.3410.3.69.34
3610.3.69.35/3210.3.69.35 – 10.3.69.3510.3.69.35
3710.3.69.36/3210.3.69.36 – 10.3.69.3610.3.69.36
3810.3.69.37/3210.3.69.37 – 10.3.69.3710.3.69.37
3910.3.69.38/3210.3.69.38 – 10.3.69.3810.3.69.38
4010.3.69.39/3210.3.69.39 – 10.3.69.3910.3.69.39
4110.3.69.40/3210.3.69.40 – 10.3.69.4010.3.69.40
4210.3.69.41/3210.3.69.41 – 10.3.69.4110.3.69.41
4310.3.69.42/3210.3.69.42 – 10.3.69.4210.3.69.42
4410.3.69.43/3210.3.69.43 – 10.3.69.4310.3.69.43
4510.3.69.44/3210.3.69.44 – 10.3.69.4410.3.69.44
4610.3.69.45/3210.3.69.45 – 10.3.69.4510.3.69.45
4710.3.69.46/3210.3.69.46 – 10.3.69.4610.3.69.46
4810.3.69.47/3210.3.69.47 – 10.3.69.4710.3.69.47
4910.3.69.48/3210.3.69.48 – 10.3.69.4810.3.69.48
5010.3.69.49/3210.3.69.49 – 10.3.69.4910.3.69.49
5110.3.69.50/3210.3.69.50 – 10.3.69.5010.3.69.50
5210.3.69.51/3210.3.69.51 – 10.3.69.5110.3.69.51
5310.3.69.52/3210.3.69.52 – 10.3.69.5210.3.69.52
5410.3.69.53/3210.3.69.53 – 10.3.69.5310.3.69.53
5510.3.69.54/3210.3.69.54 – 10.3.69.5410.3.69.54
5610.3.69.55/3210.3.69.55 – 10.3.69.5510.3.69.55
5710.3.69.56/3210.3.69.56 – 10.3.69.5610.3.69.56
5810.3.69.57/3210.3.69.57 – 10.3.69.5710.3.69.57
5910.3.69.58/3210.3.69.58 – 10.3.69.5810.3.69.58
6010.3.69.59/3210.3.69.59 – 10.3.69.5910.3.69.59
6110.3.69.60/3210.3.69.60 – 10.3.69.6010.3.69.60
6210.3.69.61/3210.3.69.61 – 10.3.69.6110.3.69.61
6310.3.69.62/3210.3.69.62 – 10.3.69.6210.3.69.62
6410.3.69.63/3210.3.69.63 – 10.3.69.6310.3.69.63
6510.3.69.64/3210.3.69.64 – 10.3.69.6410.3.69.64
6610.3.69.65/3210.3.69.65 – 10.3.69.6510.3.69.65
6710.3.69.66/3210.3.69.66 – 10.3.69.6610.3.69.66
6810.3.69.67/3210.3.69.67 – 10.3.69.6710.3.69.67
6910.3.69.68/3210.3.69.68 – 10.3.69.6810.3.69.68
7010.3.69.69/3210.3.69.69 – 10.3.69.6910.3.69.69
7110.3.69.70/3210.3.69.70 – 10.3.69.7010.3.69.70
7210.3.69.71/3210.3.69.71 – 10.3.69.7110.3.69.71
7310.3.69.72/3210.3.69.72 – 10.3.69.7210.3.69.72
7410.3.69.73/3210.3.69.73 – 10.3.69.7310.3.69.73
7510.3.69.74/3210.3.69.74 – 10.3.69.7410.3.69.74
7610.3.69.75/3210.3.69.75 – 10.3.69.7510.3.69.75
7710.3.69.76/3210.3.69.76 – 10.3.69.7610.3.69.76
7810.3.69.77/3210.3.69.77 – 10.3.69.7710.3.69.77
7910.3.69.78/3210.3.69.78 – 10.3.69.7810.3.69.78
8010.3.69.79/3210.3.69.79 – 10.3.69.7910.3.69.79
8110.3.69.80/3210.3.69.80 – 10.3.69.8010.3.69.80
8210.3.69.81/3210.3.69.81 – 10.3.69.8110.3.69.81
8310.3.69.82/3210.3.69.82 – 10.3.69.8210.3.69.82
8410.3.69.83/3210.3.69.83 – 10.3.69.8310.3.69.83
8510.3.69.84/3210.3.69.84 – 10.3.69.8410.3.69.84
8610.3.69.85/3210.3.69.85 – 10.3.69.8510.3.69.85
8710.3.69.86/3210.3.69.86 – 10.3.69.8610.3.69.86
8810.3.69.87/3210.3.69.87 – 10.3.69.8710.3.69.87
8910.3.69.88/3210.3.69.88 – 10.3.69.8810.3.69.88
9010.3.69.89/3210.3.69.89 – 10.3.69.8910.3.69.89
9110.3.69.90/3210.3.69.90 – 10.3.69.9010.3.69.90
9210.3.69.91/3210.3.69.91 – 10.3.69.9110.3.69.91
9310.3.69.92/3210.3.69.92 – 10.3.69.9210.3.69.92
9410.3.69.93/3210.3.69.93 – 10.3.69.9310.3.69.93
9510.3.69.94/3210.3.69.94 – 10.3.69.9410.3.69.94
9610.3.69.95/3210.3.69.95 – 10.3.69.9510.3.69.95
9710.3.69.96/3210.3.69.96 – 10.3.69.9610.3.69.96
9810.3.69.97/3210.3.69.97 – 10.3.69.9710.3.69.97
9910.3.69.98/3210.3.69.98 – 10.3.69.9810.3.69.98
10010.3.69.99/3210.3.69.99 – 10.3.69.9910.3.69.99
10110.3.69.100/3210.3.69.100 – 10.3.69.10010.3.69.100
10210.3.69.101/3210.3.69.101 – 10.3.69.10110.3.69.101
10310.3.69.102/3210.3.69.102 – 10.3.69.10210.3.69.102
10410.3.69.103/3210.3.69.103 – 10.3.69.10310.3.69.103
10510.3.69.104/3210.3.69.104 – 10.3.69.10410.3.69.104
10610.3.69.105/3210.3.69.105 – 10.3.69.10510.3.69.105
10710.3.69.106/3210.3.69.106 – 10.3.69.10610.3.69.106
10810.3.69.107/3210.3.69.107 – 10.3.69.10710.3.69.107
10910.3.69.108/3210.3.69.108 – 10.3.69.10810.3.69.108
11010.3.69.109/3210.3.69.109 – 10.3.69.10910.3.69.109
11110.3.69.110/3210.3.69.110 – 10.3.69.11010.3.69.110
11210.3.69.111/3210.3.69.111 – 10.3.69.11110.3.69.111
11310.3.69.112/3210.3.69.112 – 10.3.69.11210.3.69.112
11410.3.69.113/3210.3.69.113 – 10.3.69.11310.3.69.113
11510.3.69.114/3210.3.69.114 – 10.3.69.11410.3.69.114
11610.3.69.115/3210.3.69.115 – 10.3.69.11510.3.69.115
11710.3.69.116/3210.3.69.116 – 10.3.69.11610.3.69.116
11810.3.69.117/3210.3.69.117 – 10.3.69.11710.3.69.117
11910.3.69.118/3210.3.69.118 – 10.3.69.11810.3.69.118
12010.3.69.119/3210.3.69.119 – 10.3.69.11910.3.69.119
12110.3.69.120/3210.3.69.120 – 10.3.69.12010.3.69.120
12210.3.69.121/3210.3.69.121 – 10.3.69.12110.3.69.121
12310.3.69.122/3210.3.69.122 – 10.3.69.12210.3.69.122
12410.3.69.123/3210.3.69.123 – 10.3.69.12310.3.69.123
12510.3.69.124/3210.3.69.124 – 10.3.69.12410.3.69.124
12610.3.69.125/3210.3.69.125 – 10.3.69.12510.3.69.125
12710.3.69.126/3210.3.69.126 – 10.3.69.12610.3.69.126
12810.3.69.127/3210.3.69.127 – 10.3.69.12710.3.69.127
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 →