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)10.45.233.0/25
network10.45.233.0/25
broadcast10.45.233.127
first host10.45.233.1
last host10.45.233.126
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.45.233.0/25
address00001010.00101101.11101001.00000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00101101.11101001.00000000
broadcast00001010.00101101.11101001.01111111
green = network part, grey = host part
hex0x0a2de900
decimal170780928
reverse dns0.233.45.10.in-addr.arpa
ipv4-mapped::ffff:a2d:e900

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.45.233.0/3210.45.233.0 – 10.45.233.010.45.233.0
210.45.233.1/3210.45.233.1 – 10.45.233.110.45.233.1
310.45.233.2/3210.45.233.2 – 10.45.233.210.45.233.2
410.45.233.3/3210.45.233.3 – 10.45.233.310.45.233.3
510.45.233.4/3210.45.233.4 – 10.45.233.410.45.233.4
610.45.233.5/3210.45.233.5 – 10.45.233.510.45.233.5
710.45.233.6/3210.45.233.6 – 10.45.233.610.45.233.6
810.45.233.7/3210.45.233.7 – 10.45.233.710.45.233.7
910.45.233.8/3210.45.233.8 – 10.45.233.810.45.233.8
1010.45.233.9/3210.45.233.9 – 10.45.233.910.45.233.9
1110.45.233.10/3210.45.233.10 – 10.45.233.1010.45.233.10
1210.45.233.11/3210.45.233.11 – 10.45.233.1110.45.233.11
1310.45.233.12/3210.45.233.12 – 10.45.233.1210.45.233.12
1410.45.233.13/3210.45.233.13 – 10.45.233.1310.45.233.13
1510.45.233.14/3210.45.233.14 – 10.45.233.1410.45.233.14
1610.45.233.15/3210.45.233.15 – 10.45.233.1510.45.233.15
1710.45.233.16/3210.45.233.16 – 10.45.233.1610.45.233.16
1810.45.233.17/3210.45.233.17 – 10.45.233.1710.45.233.17
1910.45.233.18/3210.45.233.18 – 10.45.233.1810.45.233.18
2010.45.233.19/3210.45.233.19 – 10.45.233.1910.45.233.19
2110.45.233.20/3210.45.233.20 – 10.45.233.2010.45.233.20
2210.45.233.21/3210.45.233.21 – 10.45.233.2110.45.233.21
2310.45.233.22/3210.45.233.22 – 10.45.233.2210.45.233.22
2410.45.233.23/3210.45.233.23 – 10.45.233.2310.45.233.23
2510.45.233.24/3210.45.233.24 – 10.45.233.2410.45.233.24
2610.45.233.25/3210.45.233.25 – 10.45.233.2510.45.233.25
2710.45.233.26/3210.45.233.26 – 10.45.233.2610.45.233.26
2810.45.233.27/3210.45.233.27 – 10.45.233.2710.45.233.27
2910.45.233.28/3210.45.233.28 – 10.45.233.2810.45.233.28
3010.45.233.29/3210.45.233.29 – 10.45.233.2910.45.233.29
3110.45.233.30/3210.45.233.30 – 10.45.233.3010.45.233.30
3210.45.233.31/3210.45.233.31 – 10.45.233.3110.45.233.31
3310.45.233.32/3210.45.233.32 – 10.45.233.3210.45.233.32
3410.45.233.33/3210.45.233.33 – 10.45.233.3310.45.233.33
3510.45.233.34/3210.45.233.34 – 10.45.233.3410.45.233.34
3610.45.233.35/3210.45.233.35 – 10.45.233.3510.45.233.35
3710.45.233.36/3210.45.233.36 – 10.45.233.3610.45.233.36
3810.45.233.37/3210.45.233.37 – 10.45.233.3710.45.233.37
3910.45.233.38/3210.45.233.38 – 10.45.233.3810.45.233.38
4010.45.233.39/3210.45.233.39 – 10.45.233.3910.45.233.39
4110.45.233.40/3210.45.233.40 – 10.45.233.4010.45.233.40
4210.45.233.41/3210.45.233.41 – 10.45.233.4110.45.233.41
4310.45.233.42/3210.45.233.42 – 10.45.233.4210.45.233.42
4410.45.233.43/3210.45.233.43 – 10.45.233.4310.45.233.43
4510.45.233.44/3210.45.233.44 – 10.45.233.4410.45.233.44
4610.45.233.45/3210.45.233.45 – 10.45.233.4510.45.233.45
4710.45.233.46/3210.45.233.46 – 10.45.233.4610.45.233.46
4810.45.233.47/3210.45.233.47 – 10.45.233.4710.45.233.47
4910.45.233.48/3210.45.233.48 – 10.45.233.4810.45.233.48
5010.45.233.49/3210.45.233.49 – 10.45.233.4910.45.233.49
5110.45.233.50/3210.45.233.50 – 10.45.233.5010.45.233.50
5210.45.233.51/3210.45.233.51 – 10.45.233.5110.45.233.51
5310.45.233.52/3210.45.233.52 – 10.45.233.5210.45.233.52
5410.45.233.53/3210.45.233.53 – 10.45.233.5310.45.233.53
5510.45.233.54/3210.45.233.54 – 10.45.233.5410.45.233.54
5610.45.233.55/3210.45.233.55 – 10.45.233.5510.45.233.55
5710.45.233.56/3210.45.233.56 – 10.45.233.5610.45.233.56
5810.45.233.57/3210.45.233.57 – 10.45.233.5710.45.233.57
5910.45.233.58/3210.45.233.58 – 10.45.233.5810.45.233.58
6010.45.233.59/3210.45.233.59 – 10.45.233.5910.45.233.59
6110.45.233.60/3210.45.233.60 – 10.45.233.6010.45.233.60
6210.45.233.61/3210.45.233.61 – 10.45.233.6110.45.233.61
6310.45.233.62/3210.45.233.62 – 10.45.233.6210.45.233.62
6410.45.233.63/3210.45.233.63 – 10.45.233.6310.45.233.63
6510.45.233.64/3210.45.233.64 – 10.45.233.6410.45.233.64
6610.45.233.65/3210.45.233.65 – 10.45.233.6510.45.233.65
6710.45.233.66/3210.45.233.66 – 10.45.233.6610.45.233.66
6810.45.233.67/3210.45.233.67 – 10.45.233.6710.45.233.67
6910.45.233.68/3210.45.233.68 – 10.45.233.6810.45.233.68
7010.45.233.69/3210.45.233.69 – 10.45.233.6910.45.233.69
7110.45.233.70/3210.45.233.70 – 10.45.233.7010.45.233.70
7210.45.233.71/3210.45.233.71 – 10.45.233.7110.45.233.71
7310.45.233.72/3210.45.233.72 – 10.45.233.7210.45.233.72
7410.45.233.73/3210.45.233.73 – 10.45.233.7310.45.233.73
7510.45.233.74/3210.45.233.74 – 10.45.233.7410.45.233.74
7610.45.233.75/3210.45.233.75 – 10.45.233.7510.45.233.75
7710.45.233.76/3210.45.233.76 – 10.45.233.7610.45.233.76
7810.45.233.77/3210.45.233.77 – 10.45.233.7710.45.233.77
7910.45.233.78/3210.45.233.78 – 10.45.233.7810.45.233.78
8010.45.233.79/3210.45.233.79 – 10.45.233.7910.45.233.79
8110.45.233.80/3210.45.233.80 – 10.45.233.8010.45.233.80
8210.45.233.81/3210.45.233.81 – 10.45.233.8110.45.233.81
8310.45.233.82/3210.45.233.82 – 10.45.233.8210.45.233.82
8410.45.233.83/3210.45.233.83 – 10.45.233.8310.45.233.83
8510.45.233.84/3210.45.233.84 – 10.45.233.8410.45.233.84
8610.45.233.85/3210.45.233.85 – 10.45.233.8510.45.233.85
8710.45.233.86/3210.45.233.86 – 10.45.233.8610.45.233.86
8810.45.233.87/3210.45.233.87 – 10.45.233.8710.45.233.87
8910.45.233.88/3210.45.233.88 – 10.45.233.8810.45.233.88
9010.45.233.89/3210.45.233.89 – 10.45.233.8910.45.233.89
9110.45.233.90/3210.45.233.90 – 10.45.233.9010.45.233.90
9210.45.233.91/3210.45.233.91 – 10.45.233.9110.45.233.91
9310.45.233.92/3210.45.233.92 – 10.45.233.9210.45.233.92
9410.45.233.93/3210.45.233.93 – 10.45.233.9310.45.233.93
9510.45.233.94/3210.45.233.94 – 10.45.233.9410.45.233.94
9610.45.233.95/3210.45.233.95 – 10.45.233.9510.45.233.95
9710.45.233.96/3210.45.233.96 – 10.45.233.9610.45.233.96
9810.45.233.97/3210.45.233.97 – 10.45.233.9710.45.233.97
9910.45.233.98/3210.45.233.98 – 10.45.233.9810.45.233.98
10010.45.233.99/3210.45.233.99 – 10.45.233.9910.45.233.99
10110.45.233.100/3210.45.233.100 – 10.45.233.10010.45.233.100
10210.45.233.101/3210.45.233.101 – 10.45.233.10110.45.233.101
10310.45.233.102/3210.45.233.102 – 10.45.233.10210.45.233.102
10410.45.233.103/3210.45.233.103 – 10.45.233.10310.45.233.103
10510.45.233.104/3210.45.233.104 – 10.45.233.10410.45.233.104
10610.45.233.105/3210.45.233.105 – 10.45.233.10510.45.233.105
10710.45.233.106/3210.45.233.106 – 10.45.233.10610.45.233.106
10810.45.233.107/3210.45.233.107 – 10.45.233.10710.45.233.107
10910.45.233.108/3210.45.233.108 – 10.45.233.10810.45.233.108
11010.45.233.109/3210.45.233.109 – 10.45.233.10910.45.233.109
11110.45.233.110/3210.45.233.110 – 10.45.233.11010.45.233.110
11210.45.233.111/3210.45.233.111 – 10.45.233.11110.45.233.111
11310.45.233.112/3210.45.233.112 – 10.45.233.11210.45.233.112
11410.45.233.113/3210.45.233.113 – 10.45.233.11310.45.233.113
11510.45.233.114/3210.45.233.114 – 10.45.233.11410.45.233.114
11610.45.233.115/3210.45.233.115 – 10.45.233.11510.45.233.115
11710.45.233.116/3210.45.233.116 – 10.45.233.11610.45.233.116
11810.45.233.117/3210.45.233.117 – 10.45.233.11710.45.233.117
11910.45.233.118/3210.45.233.118 – 10.45.233.11810.45.233.118
12010.45.233.119/3210.45.233.119 – 10.45.233.11910.45.233.119
12110.45.233.120/3210.45.233.120 – 10.45.233.12010.45.233.120
12210.45.233.121/3210.45.233.121 – 10.45.233.12110.45.233.121
12310.45.233.122/3210.45.233.122 – 10.45.233.12210.45.233.122
12410.45.233.123/3210.45.233.123 – 10.45.233.12310.45.233.123
12510.45.233.124/3210.45.233.124 – 10.45.233.12410.45.233.124
12610.45.233.125/3210.45.233.125 – 10.45.233.12510.45.233.125
12710.45.233.126/3210.45.233.126 – 10.45.233.12610.45.233.126
12810.45.233.127/3210.45.233.127 – 10.45.233.12710.45.233.127
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 →