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)10.89.6.0/25
network10.89.6.0/25
broadcast10.89.6.127
first host10.89.6.1
last host10.89.6.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.89.6.0/25
address00001010.01011001.00000110.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01011001.00000110.00000000
broadcast00001010.01011001.00000110.01111111
green = network part, grey = host part
hex0x0a590600
decimal173606400
reverse dns0.6.89.10.in-addr.arpa
ipv4-mapped::ffff:a59:600

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.89.6.0/3210.89.6.0 – 10.89.6.010.89.6.0
210.89.6.1/3210.89.6.1 – 10.89.6.110.89.6.1
310.89.6.2/3210.89.6.2 – 10.89.6.210.89.6.2
410.89.6.3/3210.89.6.3 – 10.89.6.310.89.6.3
510.89.6.4/3210.89.6.4 – 10.89.6.410.89.6.4
610.89.6.5/3210.89.6.5 – 10.89.6.510.89.6.5
710.89.6.6/3210.89.6.6 – 10.89.6.610.89.6.6
810.89.6.7/3210.89.6.7 – 10.89.6.710.89.6.7
910.89.6.8/3210.89.6.8 – 10.89.6.810.89.6.8
1010.89.6.9/3210.89.6.9 – 10.89.6.910.89.6.9
1110.89.6.10/3210.89.6.10 – 10.89.6.1010.89.6.10
1210.89.6.11/3210.89.6.11 – 10.89.6.1110.89.6.11
1310.89.6.12/3210.89.6.12 – 10.89.6.1210.89.6.12
1410.89.6.13/3210.89.6.13 – 10.89.6.1310.89.6.13
1510.89.6.14/3210.89.6.14 – 10.89.6.1410.89.6.14
1610.89.6.15/3210.89.6.15 – 10.89.6.1510.89.6.15
1710.89.6.16/3210.89.6.16 – 10.89.6.1610.89.6.16
1810.89.6.17/3210.89.6.17 – 10.89.6.1710.89.6.17
1910.89.6.18/3210.89.6.18 – 10.89.6.1810.89.6.18
2010.89.6.19/3210.89.6.19 – 10.89.6.1910.89.6.19
2110.89.6.20/3210.89.6.20 – 10.89.6.2010.89.6.20
2210.89.6.21/3210.89.6.21 – 10.89.6.2110.89.6.21
2310.89.6.22/3210.89.6.22 – 10.89.6.2210.89.6.22
2410.89.6.23/3210.89.6.23 – 10.89.6.2310.89.6.23
2510.89.6.24/3210.89.6.24 – 10.89.6.2410.89.6.24
2610.89.6.25/3210.89.6.25 – 10.89.6.2510.89.6.25
2710.89.6.26/3210.89.6.26 – 10.89.6.2610.89.6.26
2810.89.6.27/3210.89.6.27 – 10.89.6.2710.89.6.27
2910.89.6.28/3210.89.6.28 – 10.89.6.2810.89.6.28
3010.89.6.29/3210.89.6.29 – 10.89.6.2910.89.6.29
3110.89.6.30/3210.89.6.30 – 10.89.6.3010.89.6.30
3210.89.6.31/3210.89.6.31 – 10.89.6.3110.89.6.31
3310.89.6.32/3210.89.6.32 – 10.89.6.3210.89.6.32
3410.89.6.33/3210.89.6.33 – 10.89.6.3310.89.6.33
3510.89.6.34/3210.89.6.34 – 10.89.6.3410.89.6.34
3610.89.6.35/3210.89.6.35 – 10.89.6.3510.89.6.35
3710.89.6.36/3210.89.6.36 – 10.89.6.3610.89.6.36
3810.89.6.37/3210.89.6.37 – 10.89.6.3710.89.6.37
3910.89.6.38/3210.89.6.38 – 10.89.6.3810.89.6.38
4010.89.6.39/3210.89.6.39 – 10.89.6.3910.89.6.39
4110.89.6.40/3210.89.6.40 – 10.89.6.4010.89.6.40
4210.89.6.41/3210.89.6.41 – 10.89.6.4110.89.6.41
4310.89.6.42/3210.89.6.42 – 10.89.6.4210.89.6.42
4410.89.6.43/3210.89.6.43 – 10.89.6.4310.89.6.43
4510.89.6.44/3210.89.6.44 – 10.89.6.4410.89.6.44
4610.89.6.45/3210.89.6.45 – 10.89.6.4510.89.6.45
4710.89.6.46/3210.89.6.46 – 10.89.6.4610.89.6.46
4810.89.6.47/3210.89.6.47 – 10.89.6.4710.89.6.47
4910.89.6.48/3210.89.6.48 – 10.89.6.4810.89.6.48
5010.89.6.49/3210.89.6.49 – 10.89.6.4910.89.6.49
5110.89.6.50/3210.89.6.50 – 10.89.6.5010.89.6.50
5210.89.6.51/3210.89.6.51 – 10.89.6.5110.89.6.51
5310.89.6.52/3210.89.6.52 – 10.89.6.5210.89.6.52
5410.89.6.53/3210.89.6.53 – 10.89.6.5310.89.6.53
5510.89.6.54/3210.89.6.54 – 10.89.6.5410.89.6.54
5610.89.6.55/3210.89.6.55 – 10.89.6.5510.89.6.55
5710.89.6.56/3210.89.6.56 – 10.89.6.5610.89.6.56
5810.89.6.57/3210.89.6.57 – 10.89.6.5710.89.6.57
5910.89.6.58/3210.89.6.58 – 10.89.6.5810.89.6.58
6010.89.6.59/3210.89.6.59 – 10.89.6.5910.89.6.59
6110.89.6.60/3210.89.6.60 – 10.89.6.6010.89.6.60
6210.89.6.61/3210.89.6.61 – 10.89.6.6110.89.6.61
6310.89.6.62/3210.89.6.62 – 10.89.6.6210.89.6.62
6410.89.6.63/3210.89.6.63 – 10.89.6.6310.89.6.63
6510.89.6.64/3210.89.6.64 – 10.89.6.6410.89.6.64
6610.89.6.65/3210.89.6.65 – 10.89.6.6510.89.6.65
6710.89.6.66/3210.89.6.66 – 10.89.6.6610.89.6.66
6810.89.6.67/3210.89.6.67 – 10.89.6.6710.89.6.67
6910.89.6.68/3210.89.6.68 – 10.89.6.6810.89.6.68
7010.89.6.69/3210.89.6.69 – 10.89.6.6910.89.6.69
7110.89.6.70/3210.89.6.70 – 10.89.6.7010.89.6.70
7210.89.6.71/3210.89.6.71 – 10.89.6.7110.89.6.71
7310.89.6.72/3210.89.6.72 – 10.89.6.7210.89.6.72
7410.89.6.73/3210.89.6.73 – 10.89.6.7310.89.6.73
7510.89.6.74/3210.89.6.74 – 10.89.6.7410.89.6.74
7610.89.6.75/3210.89.6.75 – 10.89.6.7510.89.6.75
7710.89.6.76/3210.89.6.76 – 10.89.6.7610.89.6.76
7810.89.6.77/3210.89.6.77 – 10.89.6.7710.89.6.77
7910.89.6.78/3210.89.6.78 – 10.89.6.7810.89.6.78
8010.89.6.79/3210.89.6.79 – 10.89.6.7910.89.6.79
8110.89.6.80/3210.89.6.80 – 10.89.6.8010.89.6.80
8210.89.6.81/3210.89.6.81 – 10.89.6.8110.89.6.81
8310.89.6.82/3210.89.6.82 – 10.89.6.8210.89.6.82
8410.89.6.83/3210.89.6.83 – 10.89.6.8310.89.6.83
8510.89.6.84/3210.89.6.84 – 10.89.6.8410.89.6.84
8610.89.6.85/3210.89.6.85 – 10.89.6.8510.89.6.85
8710.89.6.86/3210.89.6.86 – 10.89.6.8610.89.6.86
8810.89.6.87/3210.89.6.87 – 10.89.6.8710.89.6.87
8910.89.6.88/3210.89.6.88 – 10.89.6.8810.89.6.88
9010.89.6.89/3210.89.6.89 – 10.89.6.8910.89.6.89
9110.89.6.90/3210.89.6.90 – 10.89.6.9010.89.6.90
9210.89.6.91/3210.89.6.91 – 10.89.6.9110.89.6.91
9310.89.6.92/3210.89.6.92 – 10.89.6.9210.89.6.92
9410.89.6.93/3210.89.6.93 – 10.89.6.9310.89.6.93
9510.89.6.94/3210.89.6.94 – 10.89.6.9410.89.6.94
9610.89.6.95/3210.89.6.95 – 10.89.6.9510.89.6.95
9710.89.6.96/3210.89.6.96 – 10.89.6.9610.89.6.96
9810.89.6.97/3210.89.6.97 – 10.89.6.9710.89.6.97
9910.89.6.98/3210.89.6.98 – 10.89.6.9810.89.6.98
10010.89.6.99/3210.89.6.99 – 10.89.6.9910.89.6.99
10110.89.6.100/3210.89.6.100 – 10.89.6.10010.89.6.100
10210.89.6.101/3210.89.6.101 – 10.89.6.10110.89.6.101
10310.89.6.102/3210.89.6.102 – 10.89.6.10210.89.6.102
10410.89.6.103/3210.89.6.103 – 10.89.6.10310.89.6.103
10510.89.6.104/3210.89.6.104 – 10.89.6.10410.89.6.104
10610.89.6.105/3210.89.6.105 – 10.89.6.10510.89.6.105
10710.89.6.106/3210.89.6.106 – 10.89.6.10610.89.6.106
10810.89.6.107/3210.89.6.107 – 10.89.6.10710.89.6.107
10910.89.6.108/3210.89.6.108 – 10.89.6.10810.89.6.108
11010.89.6.109/3210.89.6.109 – 10.89.6.10910.89.6.109
11110.89.6.110/3210.89.6.110 – 10.89.6.11010.89.6.110
11210.89.6.111/3210.89.6.111 – 10.89.6.11110.89.6.111
11310.89.6.112/3210.89.6.112 – 10.89.6.11210.89.6.112
11410.89.6.113/3210.89.6.113 – 10.89.6.11310.89.6.113
11510.89.6.114/3210.89.6.114 – 10.89.6.11410.89.6.114
11610.89.6.115/3210.89.6.115 – 10.89.6.11510.89.6.115
11710.89.6.116/3210.89.6.116 – 10.89.6.11610.89.6.116
11810.89.6.117/3210.89.6.117 – 10.89.6.11710.89.6.117
11910.89.6.118/3210.89.6.118 – 10.89.6.11810.89.6.118
12010.89.6.119/3210.89.6.119 – 10.89.6.11910.89.6.119
12110.89.6.120/3210.89.6.120 – 10.89.6.12010.89.6.120
12210.89.6.121/3210.89.6.121 – 10.89.6.12110.89.6.121
12310.89.6.122/3210.89.6.122 – 10.89.6.12210.89.6.122
12410.89.6.123/3210.89.6.123 – 10.89.6.12310.89.6.123
12510.89.6.124/3210.89.6.124 – 10.89.6.12410.89.6.124
12610.89.6.125/3210.89.6.125 – 10.89.6.12510.89.6.125
12710.89.6.126/3210.89.6.126 – 10.89.6.12610.89.6.126
12810.89.6.127/3210.89.6.127 – 10.89.6.12710.89.6.127
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 →