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)10.45.35.0/25
network10.45.35.0/25
broadcast10.45.35.127
first host10.45.35.1
last host10.45.35.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.45.35.0/25
address00001010.00101101.00100011.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00101101.00100011.00000000
broadcast00001010.00101101.00100011.01111111
green = network part, grey = host part
hex0x0a2d2300
decimal170730240
reverse dns0.35.45.10.in-addr.arpa
ipv4-mapped::ffff:a2d:2300

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.45.35.0/3210.45.35.0 – 10.45.35.010.45.35.0
210.45.35.1/3210.45.35.1 – 10.45.35.110.45.35.1
310.45.35.2/3210.45.35.2 – 10.45.35.210.45.35.2
410.45.35.3/3210.45.35.3 – 10.45.35.310.45.35.3
510.45.35.4/3210.45.35.4 – 10.45.35.410.45.35.4
610.45.35.5/3210.45.35.5 – 10.45.35.510.45.35.5
710.45.35.6/3210.45.35.6 – 10.45.35.610.45.35.6
810.45.35.7/3210.45.35.7 – 10.45.35.710.45.35.7
910.45.35.8/3210.45.35.8 – 10.45.35.810.45.35.8
1010.45.35.9/3210.45.35.9 – 10.45.35.910.45.35.9
1110.45.35.10/3210.45.35.10 – 10.45.35.1010.45.35.10
1210.45.35.11/3210.45.35.11 – 10.45.35.1110.45.35.11
1310.45.35.12/3210.45.35.12 – 10.45.35.1210.45.35.12
1410.45.35.13/3210.45.35.13 – 10.45.35.1310.45.35.13
1510.45.35.14/3210.45.35.14 – 10.45.35.1410.45.35.14
1610.45.35.15/3210.45.35.15 – 10.45.35.1510.45.35.15
1710.45.35.16/3210.45.35.16 – 10.45.35.1610.45.35.16
1810.45.35.17/3210.45.35.17 – 10.45.35.1710.45.35.17
1910.45.35.18/3210.45.35.18 – 10.45.35.1810.45.35.18
2010.45.35.19/3210.45.35.19 – 10.45.35.1910.45.35.19
2110.45.35.20/3210.45.35.20 – 10.45.35.2010.45.35.20
2210.45.35.21/3210.45.35.21 – 10.45.35.2110.45.35.21
2310.45.35.22/3210.45.35.22 – 10.45.35.2210.45.35.22
2410.45.35.23/3210.45.35.23 – 10.45.35.2310.45.35.23
2510.45.35.24/3210.45.35.24 – 10.45.35.2410.45.35.24
2610.45.35.25/3210.45.35.25 – 10.45.35.2510.45.35.25
2710.45.35.26/3210.45.35.26 – 10.45.35.2610.45.35.26
2810.45.35.27/3210.45.35.27 – 10.45.35.2710.45.35.27
2910.45.35.28/3210.45.35.28 – 10.45.35.2810.45.35.28
3010.45.35.29/3210.45.35.29 – 10.45.35.2910.45.35.29
3110.45.35.30/3210.45.35.30 – 10.45.35.3010.45.35.30
3210.45.35.31/3210.45.35.31 – 10.45.35.3110.45.35.31
3310.45.35.32/3210.45.35.32 – 10.45.35.3210.45.35.32
3410.45.35.33/3210.45.35.33 – 10.45.35.3310.45.35.33
3510.45.35.34/3210.45.35.34 – 10.45.35.3410.45.35.34
3610.45.35.35/3210.45.35.35 – 10.45.35.3510.45.35.35
3710.45.35.36/3210.45.35.36 – 10.45.35.3610.45.35.36
3810.45.35.37/3210.45.35.37 – 10.45.35.3710.45.35.37
3910.45.35.38/3210.45.35.38 – 10.45.35.3810.45.35.38
4010.45.35.39/3210.45.35.39 – 10.45.35.3910.45.35.39
4110.45.35.40/3210.45.35.40 – 10.45.35.4010.45.35.40
4210.45.35.41/3210.45.35.41 – 10.45.35.4110.45.35.41
4310.45.35.42/3210.45.35.42 – 10.45.35.4210.45.35.42
4410.45.35.43/3210.45.35.43 – 10.45.35.4310.45.35.43
4510.45.35.44/3210.45.35.44 – 10.45.35.4410.45.35.44
4610.45.35.45/3210.45.35.45 – 10.45.35.4510.45.35.45
4710.45.35.46/3210.45.35.46 – 10.45.35.4610.45.35.46
4810.45.35.47/3210.45.35.47 – 10.45.35.4710.45.35.47
4910.45.35.48/3210.45.35.48 – 10.45.35.4810.45.35.48
5010.45.35.49/3210.45.35.49 – 10.45.35.4910.45.35.49
5110.45.35.50/3210.45.35.50 – 10.45.35.5010.45.35.50
5210.45.35.51/3210.45.35.51 – 10.45.35.5110.45.35.51
5310.45.35.52/3210.45.35.52 – 10.45.35.5210.45.35.52
5410.45.35.53/3210.45.35.53 – 10.45.35.5310.45.35.53
5510.45.35.54/3210.45.35.54 – 10.45.35.5410.45.35.54
5610.45.35.55/3210.45.35.55 – 10.45.35.5510.45.35.55
5710.45.35.56/3210.45.35.56 – 10.45.35.5610.45.35.56
5810.45.35.57/3210.45.35.57 – 10.45.35.5710.45.35.57
5910.45.35.58/3210.45.35.58 – 10.45.35.5810.45.35.58
6010.45.35.59/3210.45.35.59 – 10.45.35.5910.45.35.59
6110.45.35.60/3210.45.35.60 – 10.45.35.6010.45.35.60
6210.45.35.61/3210.45.35.61 – 10.45.35.6110.45.35.61
6310.45.35.62/3210.45.35.62 – 10.45.35.6210.45.35.62
6410.45.35.63/3210.45.35.63 – 10.45.35.6310.45.35.63
6510.45.35.64/3210.45.35.64 – 10.45.35.6410.45.35.64
6610.45.35.65/3210.45.35.65 – 10.45.35.6510.45.35.65
6710.45.35.66/3210.45.35.66 – 10.45.35.6610.45.35.66
6810.45.35.67/3210.45.35.67 – 10.45.35.6710.45.35.67
6910.45.35.68/3210.45.35.68 – 10.45.35.6810.45.35.68
7010.45.35.69/3210.45.35.69 – 10.45.35.6910.45.35.69
7110.45.35.70/3210.45.35.70 – 10.45.35.7010.45.35.70
7210.45.35.71/3210.45.35.71 – 10.45.35.7110.45.35.71
7310.45.35.72/3210.45.35.72 – 10.45.35.7210.45.35.72
7410.45.35.73/3210.45.35.73 – 10.45.35.7310.45.35.73
7510.45.35.74/3210.45.35.74 – 10.45.35.7410.45.35.74
7610.45.35.75/3210.45.35.75 – 10.45.35.7510.45.35.75
7710.45.35.76/3210.45.35.76 – 10.45.35.7610.45.35.76
7810.45.35.77/3210.45.35.77 – 10.45.35.7710.45.35.77
7910.45.35.78/3210.45.35.78 – 10.45.35.7810.45.35.78
8010.45.35.79/3210.45.35.79 – 10.45.35.7910.45.35.79
8110.45.35.80/3210.45.35.80 – 10.45.35.8010.45.35.80
8210.45.35.81/3210.45.35.81 – 10.45.35.8110.45.35.81
8310.45.35.82/3210.45.35.82 – 10.45.35.8210.45.35.82
8410.45.35.83/3210.45.35.83 – 10.45.35.8310.45.35.83
8510.45.35.84/3210.45.35.84 – 10.45.35.8410.45.35.84
8610.45.35.85/3210.45.35.85 – 10.45.35.8510.45.35.85
8710.45.35.86/3210.45.35.86 – 10.45.35.8610.45.35.86
8810.45.35.87/3210.45.35.87 – 10.45.35.8710.45.35.87
8910.45.35.88/3210.45.35.88 – 10.45.35.8810.45.35.88
9010.45.35.89/3210.45.35.89 – 10.45.35.8910.45.35.89
9110.45.35.90/3210.45.35.90 – 10.45.35.9010.45.35.90
9210.45.35.91/3210.45.35.91 – 10.45.35.9110.45.35.91
9310.45.35.92/3210.45.35.92 – 10.45.35.9210.45.35.92
9410.45.35.93/3210.45.35.93 – 10.45.35.9310.45.35.93
9510.45.35.94/3210.45.35.94 – 10.45.35.9410.45.35.94
9610.45.35.95/3210.45.35.95 – 10.45.35.9510.45.35.95
9710.45.35.96/3210.45.35.96 – 10.45.35.9610.45.35.96
9810.45.35.97/3210.45.35.97 – 10.45.35.9710.45.35.97
9910.45.35.98/3210.45.35.98 – 10.45.35.9810.45.35.98
10010.45.35.99/3210.45.35.99 – 10.45.35.9910.45.35.99
10110.45.35.100/3210.45.35.100 – 10.45.35.10010.45.35.100
10210.45.35.101/3210.45.35.101 – 10.45.35.10110.45.35.101
10310.45.35.102/3210.45.35.102 – 10.45.35.10210.45.35.102
10410.45.35.103/3210.45.35.103 – 10.45.35.10310.45.35.103
10510.45.35.104/3210.45.35.104 – 10.45.35.10410.45.35.104
10610.45.35.105/3210.45.35.105 – 10.45.35.10510.45.35.105
10710.45.35.106/3210.45.35.106 – 10.45.35.10610.45.35.106
10810.45.35.107/3210.45.35.107 – 10.45.35.10710.45.35.107
10910.45.35.108/3210.45.35.108 – 10.45.35.10810.45.35.108
11010.45.35.109/3210.45.35.109 – 10.45.35.10910.45.35.109
11110.45.35.110/3210.45.35.110 – 10.45.35.11010.45.35.110
11210.45.35.111/3210.45.35.111 – 10.45.35.11110.45.35.111
11310.45.35.112/3210.45.35.112 – 10.45.35.11210.45.35.112
11410.45.35.113/3210.45.35.113 – 10.45.35.11310.45.35.113
11510.45.35.114/3210.45.35.114 – 10.45.35.11410.45.35.114
11610.45.35.115/3210.45.35.115 – 10.45.35.11510.45.35.115
11710.45.35.116/3210.45.35.116 – 10.45.35.11610.45.35.116
11810.45.35.117/3210.45.35.117 – 10.45.35.11710.45.35.117
11910.45.35.118/3210.45.35.118 – 10.45.35.11810.45.35.118
12010.45.35.119/3210.45.35.119 – 10.45.35.11910.45.35.119
12110.45.35.120/3210.45.35.120 – 10.45.35.12010.45.35.120
12210.45.35.121/3210.45.35.121 – 10.45.35.12110.45.35.121
12310.45.35.122/3210.45.35.122 – 10.45.35.12210.45.35.122
12410.45.35.123/3210.45.35.123 – 10.45.35.12310.45.35.123
12510.45.35.124/3210.45.35.124 – 10.45.35.12410.45.35.124
12610.45.35.125/3210.45.35.125 – 10.45.35.12510.45.35.125
12710.45.35.126/3210.45.35.126 – 10.45.35.12610.45.35.126
12810.45.35.127/3210.45.35.127 – 10.45.35.12710.45.35.127
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 →