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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)10.136.53.64/26
network10.136.53.64/26
broadcast10.136.53.127
first host10.136.53.65
last host10.136.53.126
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.136.53.64/26
address00001010.10001000.00110101.01000000
subnet mask11111111.11111111.11111111.11000000
network00001010.10001000.00110101.01000000
broadcast00001010.10001000.00110101.01111111
green = network part, grey = host part
hex0x0a883540
decimal176698688
reverse dns64.53.136.10.in-addr.arpa
ipv4-mapped::ffff:a88:3540

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.136.53.64/3210.136.53.64 – 10.136.53.6410.136.53.64
210.136.53.65/3210.136.53.65 – 10.136.53.6510.136.53.65
310.136.53.66/3210.136.53.66 – 10.136.53.6610.136.53.66
410.136.53.67/3210.136.53.67 – 10.136.53.6710.136.53.67
510.136.53.68/3210.136.53.68 – 10.136.53.6810.136.53.68
610.136.53.69/3210.136.53.69 – 10.136.53.6910.136.53.69
710.136.53.70/3210.136.53.70 – 10.136.53.7010.136.53.70
810.136.53.71/3210.136.53.71 – 10.136.53.7110.136.53.71
910.136.53.72/3210.136.53.72 – 10.136.53.7210.136.53.72
1010.136.53.73/3210.136.53.73 – 10.136.53.7310.136.53.73
1110.136.53.74/3210.136.53.74 – 10.136.53.7410.136.53.74
1210.136.53.75/3210.136.53.75 – 10.136.53.7510.136.53.75
1310.136.53.76/3210.136.53.76 – 10.136.53.7610.136.53.76
1410.136.53.77/3210.136.53.77 – 10.136.53.7710.136.53.77
1510.136.53.78/3210.136.53.78 – 10.136.53.7810.136.53.78
1610.136.53.79/3210.136.53.79 – 10.136.53.7910.136.53.79
1710.136.53.80/3210.136.53.80 – 10.136.53.8010.136.53.80
1810.136.53.81/3210.136.53.81 – 10.136.53.8110.136.53.81
1910.136.53.82/3210.136.53.82 – 10.136.53.8210.136.53.82
2010.136.53.83/3210.136.53.83 – 10.136.53.8310.136.53.83
2110.136.53.84/3210.136.53.84 – 10.136.53.8410.136.53.84
2210.136.53.85/3210.136.53.85 – 10.136.53.8510.136.53.85
2310.136.53.86/3210.136.53.86 – 10.136.53.8610.136.53.86
2410.136.53.87/3210.136.53.87 – 10.136.53.8710.136.53.87
2510.136.53.88/3210.136.53.88 – 10.136.53.8810.136.53.88
2610.136.53.89/3210.136.53.89 – 10.136.53.8910.136.53.89
2710.136.53.90/3210.136.53.90 – 10.136.53.9010.136.53.90
2810.136.53.91/3210.136.53.91 – 10.136.53.9110.136.53.91
2910.136.53.92/3210.136.53.92 – 10.136.53.9210.136.53.92
3010.136.53.93/3210.136.53.93 – 10.136.53.9310.136.53.93
3110.136.53.94/3210.136.53.94 – 10.136.53.9410.136.53.94
3210.136.53.95/3210.136.53.95 – 10.136.53.9510.136.53.95
3310.136.53.96/3210.136.53.96 – 10.136.53.9610.136.53.96
3410.136.53.97/3210.136.53.97 – 10.136.53.9710.136.53.97
3510.136.53.98/3210.136.53.98 – 10.136.53.9810.136.53.98
3610.136.53.99/3210.136.53.99 – 10.136.53.9910.136.53.99
3710.136.53.100/3210.136.53.100 – 10.136.53.10010.136.53.100
3810.136.53.101/3210.136.53.101 – 10.136.53.10110.136.53.101
3910.136.53.102/3210.136.53.102 – 10.136.53.10210.136.53.102
4010.136.53.103/3210.136.53.103 – 10.136.53.10310.136.53.103
4110.136.53.104/3210.136.53.104 – 10.136.53.10410.136.53.104
4210.136.53.105/3210.136.53.105 – 10.136.53.10510.136.53.105
4310.136.53.106/3210.136.53.106 – 10.136.53.10610.136.53.106
4410.136.53.107/3210.136.53.107 – 10.136.53.10710.136.53.107
4510.136.53.108/3210.136.53.108 – 10.136.53.10810.136.53.108
4610.136.53.109/3210.136.53.109 – 10.136.53.10910.136.53.109
4710.136.53.110/3210.136.53.110 – 10.136.53.11010.136.53.110
4810.136.53.111/3210.136.53.111 – 10.136.53.11110.136.53.111
4910.136.53.112/3210.136.53.112 – 10.136.53.11210.136.53.112
5010.136.53.113/3210.136.53.113 – 10.136.53.11310.136.53.113
5110.136.53.114/3210.136.53.114 – 10.136.53.11410.136.53.114
5210.136.53.115/3210.136.53.115 – 10.136.53.11510.136.53.115
5310.136.53.116/3210.136.53.116 – 10.136.53.11610.136.53.116
5410.136.53.117/3210.136.53.117 – 10.136.53.11710.136.53.117
5510.136.53.118/3210.136.53.118 – 10.136.53.11810.136.53.118
5610.136.53.119/3210.136.53.119 – 10.136.53.11910.136.53.119
5710.136.53.120/3210.136.53.120 – 10.136.53.12010.136.53.120
5810.136.53.121/3210.136.53.121 – 10.136.53.12110.136.53.121
5910.136.53.122/3210.136.53.122 – 10.136.53.12210.136.53.122
6010.136.53.123/3210.136.53.123 – 10.136.53.12310.136.53.123
6110.136.53.124/3210.136.53.124 – 10.136.53.12410.136.53.124
6210.136.53.125/3210.136.53.125 – 10.136.53.12510.136.53.125
6310.136.53.126/3210.136.53.126 – 10.136.53.12610.136.53.126
6410.136.53.127/3210.136.53.127 – 10.136.53.12710.136.53.127
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /26
/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-
/25255.255.255.128128126-
/26255.255.255.19264621
/27255.255.255.22432302 split →
/28255.255.255.24016144 split →
/29255.255.255.248868 split →
/30255.255.255.2524216 split →
/31255.255.255.2542232 split →
/32255.255.255.2551164 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 →