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)10.3.152.0/25
network10.3.152.0/25
broadcast10.3.152.127
first host10.3.152.1
last host10.3.152.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.3.152.0/25
address00001010.00000011.10011000.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00000011.10011000.00000000
broadcast00001010.00000011.10011000.01111111
green = network part, grey = host part
hex0x0a039800
decimal168007680
reverse dns0.152.3.10.in-addr.arpa
ipv4-mapped::ffff:a03:9800

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.3.152.0/3210.3.152.0 – 10.3.152.010.3.152.0
210.3.152.1/3210.3.152.1 – 10.3.152.110.3.152.1
310.3.152.2/3210.3.152.2 – 10.3.152.210.3.152.2
410.3.152.3/3210.3.152.3 – 10.3.152.310.3.152.3
510.3.152.4/3210.3.152.4 – 10.3.152.410.3.152.4
610.3.152.5/3210.3.152.5 – 10.3.152.510.3.152.5
710.3.152.6/3210.3.152.6 – 10.3.152.610.3.152.6
810.3.152.7/3210.3.152.7 – 10.3.152.710.3.152.7
910.3.152.8/3210.3.152.8 – 10.3.152.810.3.152.8
1010.3.152.9/3210.3.152.9 – 10.3.152.910.3.152.9
1110.3.152.10/3210.3.152.10 – 10.3.152.1010.3.152.10
1210.3.152.11/3210.3.152.11 – 10.3.152.1110.3.152.11
1310.3.152.12/3210.3.152.12 – 10.3.152.1210.3.152.12
1410.3.152.13/3210.3.152.13 – 10.3.152.1310.3.152.13
1510.3.152.14/3210.3.152.14 – 10.3.152.1410.3.152.14
1610.3.152.15/3210.3.152.15 – 10.3.152.1510.3.152.15
1710.3.152.16/3210.3.152.16 – 10.3.152.1610.3.152.16
1810.3.152.17/3210.3.152.17 – 10.3.152.1710.3.152.17
1910.3.152.18/3210.3.152.18 – 10.3.152.1810.3.152.18
2010.3.152.19/3210.3.152.19 – 10.3.152.1910.3.152.19
2110.3.152.20/3210.3.152.20 – 10.3.152.2010.3.152.20
2210.3.152.21/3210.3.152.21 – 10.3.152.2110.3.152.21
2310.3.152.22/3210.3.152.22 – 10.3.152.2210.3.152.22
2410.3.152.23/3210.3.152.23 – 10.3.152.2310.3.152.23
2510.3.152.24/3210.3.152.24 – 10.3.152.2410.3.152.24
2610.3.152.25/3210.3.152.25 – 10.3.152.2510.3.152.25
2710.3.152.26/3210.3.152.26 – 10.3.152.2610.3.152.26
2810.3.152.27/3210.3.152.27 – 10.3.152.2710.3.152.27
2910.3.152.28/3210.3.152.28 – 10.3.152.2810.3.152.28
3010.3.152.29/3210.3.152.29 – 10.3.152.2910.3.152.29
3110.3.152.30/3210.3.152.30 – 10.3.152.3010.3.152.30
3210.3.152.31/3210.3.152.31 – 10.3.152.3110.3.152.31
3310.3.152.32/3210.3.152.32 – 10.3.152.3210.3.152.32
3410.3.152.33/3210.3.152.33 – 10.3.152.3310.3.152.33
3510.3.152.34/3210.3.152.34 – 10.3.152.3410.3.152.34
3610.3.152.35/3210.3.152.35 – 10.3.152.3510.3.152.35
3710.3.152.36/3210.3.152.36 – 10.3.152.3610.3.152.36
3810.3.152.37/3210.3.152.37 – 10.3.152.3710.3.152.37
3910.3.152.38/3210.3.152.38 – 10.3.152.3810.3.152.38
4010.3.152.39/3210.3.152.39 – 10.3.152.3910.3.152.39
4110.3.152.40/3210.3.152.40 – 10.3.152.4010.3.152.40
4210.3.152.41/3210.3.152.41 – 10.3.152.4110.3.152.41
4310.3.152.42/3210.3.152.42 – 10.3.152.4210.3.152.42
4410.3.152.43/3210.3.152.43 – 10.3.152.4310.3.152.43
4510.3.152.44/3210.3.152.44 – 10.3.152.4410.3.152.44
4610.3.152.45/3210.3.152.45 – 10.3.152.4510.3.152.45
4710.3.152.46/3210.3.152.46 – 10.3.152.4610.3.152.46
4810.3.152.47/3210.3.152.47 – 10.3.152.4710.3.152.47
4910.3.152.48/3210.3.152.48 – 10.3.152.4810.3.152.48
5010.3.152.49/3210.3.152.49 – 10.3.152.4910.3.152.49
5110.3.152.50/3210.3.152.50 – 10.3.152.5010.3.152.50
5210.3.152.51/3210.3.152.51 – 10.3.152.5110.3.152.51
5310.3.152.52/3210.3.152.52 – 10.3.152.5210.3.152.52
5410.3.152.53/3210.3.152.53 – 10.3.152.5310.3.152.53
5510.3.152.54/3210.3.152.54 – 10.3.152.5410.3.152.54
5610.3.152.55/3210.3.152.55 – 10.3.152.5510.3.152.55
5710.3.152.56/3210.3.152.56 – 10.3.152.5610.3.152.56
5810.3.152.57/3210.3.152.57 – 10.3.152.5710.3.152.57
5910.3.152.58/3210.3.152.58 – 10.3.152.5810.3.152.58
6010.3.152.59/3210.3.152.59 – 10.3.152.5910.3.152.59
6110.3.152.60/3210.3.152.60 – 10.3.152.6010.3.152.60
6210.3.152.61/3210.3.152.61 – 10.3.152.6110.3.152.61
6310.3.152.62/3210.3.152.62 – 10.3.152.6210.3.152.62
6410.3.152.63/3210.3.152.63 – 10.3.152.6310.3.152.63
6510.3.152.64/3210.3.152.64 – 10.3.152.6410.3.152.64
6610.3.152.65/3210.3.152.65 – 10.3.152.6510.3.152.65
6710.3.152.66/3210.3.152.66 – 10.3.152.6610.3.152.66
6810.3.152.67/3210.3.152.67 – 10.3.152.6710.3.152.67
6910.3.152.68/3210.3.152.68 – 10.3.152.6810.3.152.68
7010.3.152.69/3210.3.152.69 – 10.3.152.6910.3.152.69
7110.3.152.70/3210.3.152.70 – 10.3.152.7010.3.152.70
7210.3.152.71/3210.3.152.71 – 10.3.152.7110.3.152.71
7310.3.152.72/3210.3.152.72 – 10.3.152.7210.3.152.72
7410.3.152.73/3210.3.152.73 – 10.3.152.7310.3.152.73
7510.3.152.74/3210.3.152.74 – 10.3.152.7410.3.152.74
7610.3.152.75/3210.3.152.75 – 10.3.152.7510.3.152.75
7710.3.152.76/3210.3.152.76 – 10.3.152.7610.3.152.76
7810.3.152.77/3210.3.152.77 – 10.3.152.7710.3.152.77
7910.3.152.78/3210.3.152.78 – 10.3.152.7810.3.152.78
8010.3.152.79/3210.3.152.79 – 10.3.152.7910.3.152.79
8110.3.152.80/3210.3.152.80 – 10.3.152.8010.3.152.80
8210.3.152.81/3210.3.152.81 – 10.3.152.8110.3.152.81
8310.3.152.82/3210.3.152.82 – 10.3.152.8210.3.152.82
8410.3.152.83/3210.3.152.83 – 10.3.152.8310.3.152.83
8510.3.152.84/3210.3.152.84 – 10.3.152.8410.3.152.84
8610.3.152.85/3210.3.152.85 – 10.3.152.8510.3.152.85
8710.3.152.86/3210.3.152.86 – 10.3.152.8610.3.152.86
8810.3.152.87/3210.3.152.87 – 10.3.152.8710.3.152.87
8910.3.152.88/3210.3.152.88 – 10.3.152.8810.3.152.88
9010.3.152.89/3210.3.152.89 – 10.3.152.8910.3.152.89
9110.3.152.90/3210.3.152.90 – 10.3.152.9010.3.152.90
9210.3.152.91/3210.3.152.91 – 10.3.152.9110.3.152.91
9310.3.152.92/3210.3.152.92 – 10.3.152.9210.3.152.92
9410.3.152.93/3210.3.152.93 – 10.3.152.9310.3.152.93
9510.3.152.94/3210.3.152.94 – 10.3.152.9410.3.152.94
9610.3.152.95/3210.3.152.95 – 10.3.152.9510.3.152.95
9710.3.152.96/3210.3.152.96 – 10.3.152.9610.3.152.96
9810.3.152.97/3210.3.152.97 – 10.3.152.9710.3.152.97
9910.3.152.98/3210.3.152.98 – 10.3.152.9810.3.152.98
10010.3.152.99/3210.3.152.99 – 10.3.152.9910.3.152.99
10110.3.152.100/3210.3.152.100 – 10.3.152.10010.3.152.100
10210.3.152.101/3210.3.152.101 – 10.3.152.10110.3.152.101
10310.3.152.102/3210.3.152.102 – 10.3.152.10210.3.152.102
10410.3.152.103/3210.3.152.103 – 10.3.152.10310.3.152.103
10510.3.152.104/3210.3.152.104 – 10.3.152.10410.3.152.104
10610.3.152.105/3210.3.152.105 – 10.3.152.10510.3.152.105
10710.3.152.106/3210.3.152.106 – 10.3.152.10610.3.152.106
10810.3.152.107/3210.3.152.107 – 10.3.152.10710.3.152.107
10910.3.152.108/3210.3.152.108 – 10.3.152.10810.3.152.108
11010.3.152.109/3210.3.152.109 – 10.3.152.10910.3.152.109
11110.3.152.110/3210.3.152.110 – 10.3.152.11010.3.152.110
11210.3.152.111/3210.3.152.111 – 10.3.152.11110.3.152.111
11310.3.152.112/3210.3.152.112 – 10.3.152.11210.3.152.112
11410.3.152.113/3210.3.152.113 – 10.3.152.11310.3.152.113
11510.3.152.114/3210.3.152.114 – 10.3.152.11410.3.152.114
11610.3.152.115/3210.3.152.115 – 10.3.152.11510.3.152.115
11710.3.152.116/3210.3.152.116 – 10.3.152.11610.3.152.116
11810.3.152.117/3210.3.152.117 – 10.3.152.11710.3.152.117
11910.3.152.118/3210.3.152.118 – 10.3.152.11810.3.152.118
12010.3.152.119/3210.3.152.119 – 10.3.152.11910.3.152.119
12110.3.152.120/3210.3.152.120 – 10.3.152.12010.3.152.120
12210.3.152.121/3210.3.152.121 – 10.3.152.12110.3.152.121
12310.3.152.122/3210.3.152.122 – 10.3.152.12210.3.152.122
12410.3.152.123/3210.3.152.123 – 10.3.152.12310.3.152.123
12510.3.152.124/3210.3.152.124 – 10.3.152.12410.3.152.124
12610.3.152.125/3210.3.152.125 – 10.3.152.12510.3.152.125
12710.3.152.126/3210.3.152.126 – 10.3.152.12610.3.152.126
12810.3.152.127/3210.3.152.127 – 10.3.152.12710.3.152.127
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 →