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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)10.44.41.64/26
network10.44.41.64/26
broadcast10.44.41.127
first host10.44.41.65
last host10.44.41.126
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.44.41.64/26
address00001010.00101100.00101001.01000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00101100.00101001.01000000
broadcast00001010.00101100.00101001.01111111
green = network part, grey = host part
hex0x0a2c2940
decimal170666304
reverse dns64.41.44.10.in-addr.arpa
ipv4-mapped::ffff:a2c:2940

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.44.41.64/3210.44.41.64 – 10.44.41.6410.44.41.64
210.44.41.65/3210.44.41.65 – 10.44.41.6510.44.41.65
310.44.41.66/3210.44.41.66 – 10.44.41.6610.44.41.66
410.44.41.67/3210.44.41.67 – 10.44.41.6710.44.41.67
510.44.41.68/3210.44.41.68 – 10.44.41.6810.44.41.68
610.44.41.69/3210.44.41.69 – 10.44.41.6910.44.41.69
710.44.41.70/3210.44.41.70 – 10.44.41.7010.44.41.70
810.44.41.71/3210.44.41.71 – 10.44.41.7110.44.41.71
910.44.41.72/3210.44.41.72 – 10.44.41.7210.44.41.72
1010.44.41.73/3210.44.41.73 – 10.44.41.7310.44.41.73
1110.44.41.74/3210.44.41.74 – 10.44.41.7410.44.41.74
1210.44.41.75/3210.44.41.75 – 10.44.41.7510.44.41.75
1310.44.41.76/3210.44.41.76 – 10.44.41.7610.44.41.76
1410.44.41.77/3210.44.41.77 – 10.44.41.7710.44.41.77
1510.44.41.78/3210.44.41.78 – 10.44.41.7810.44.41.78
1610.44.41.79/3210.44.41.79 – 10.44.41.7910.44.41.79
1710.44.41.80/3210.44.41.80 – 10.44.41.8010.44.41.80
1810.44.41.81/3210.44.41.81 – 10.44.41.8110.44.41.81
1910.44.41.82/3210.44.41.82 – 10.44.41.8210.44.41.82
2010.44.41.83/3210.44.41.83 – 10.44.41.8310.44.41.83
2110.44.41.84/3210.44.41.84 – 10.44.41.8410.44.41.84
2210.44.41.85/3210.44.41.85 – 10.44.41.8510.44.41.85
2310.44.41.86/3210.44.41.86 – 10.44.41.8610.44.41.86
2410.44.41.87/3210.44.41.87 – 10.44.41.8710.44.41.87
2510.44.41.88/3210.44.41.88 – 10.44.41.8810.44.41.88
2610.44.41.89/3210.44.41.89 – 10.44.41.8910.44.41.89
2710.44.41.90/3210.44.41.90 – 10.44.41.9010.44.41.90
2810.44.41.91/3210.44.41.91 – 10.44.41.9110.44.41.91
2910.44.41.92/3210.44.41.92 – 10.44.41.9210.44.41.92
3010.44.41.93/3210.44.41.93 – 10.44.41.9310.44.41.93
3110.44.41.94/3210.44.41.94 – 10.44.41.9410.44.41.94
3210.44.41.95/3210.44.41.95 – 10.44.41.9510.44.41.95
3310.44.41.96/3210.44.41.96 – 10.44.41.9610.44.41.96
3410.44.41.97/3210.44.41.97 – 10.44.41.9710.44.41.97
3510.44.41.98/3210.44.41.98 – 10.44.41.9810.44.41.98
3610.44.41.99/3210.44.41.99 – 10.44.41.9910.44.41.99
3710.44.41.100/3210.44.41.100 – 10.44.41.10010.44.41.100
3810.44.41.101/3210.44.41.101 – 10.44.41.10110.44.41.101
3910.44.41.102/3210.44.41.102 – 10.44.41.10210.44.41.102
4010.44.41.103/3210.44.41.103 – 10.44.41.10310.44.41.103
4110.44.41.104/3210.44.41.104 – 10.44.41.10410.44.41.104
4210.44.41.105/3210.44.41.105 – 10.44.41.10510.44.41.105
4310.44.41.106/3210.44.41.106 – 10.44.41.10610.44.41.106
4410.44.41.107/3210.44.41.107 – 10.44.41.10710.44.41.107
4510.44.41.108/3210.44.41.108 – 10.44.41.10810.44.41.108
4610.44.41.109/3210.44.41.109 – 10.44.41.10910.44.41.109
4710.44.41.110/3210.44.41.110 – 10.44.41.11010.44.41.110
4810.44.41.111/3210.44.41.111 – 10.44.41.11110.44.41.111
4910.44.41.112/3210.44.41.112 – 10.44.41.11210.44.41.112
5010.44.41.113/3210.44.41.113 – 10.44.41.11310.44.41.113
5110.44.41.114/3210.44.41.114 – 10.44.41.11410.44.41.114
5210.44.41.115/3210.44.41.115 – 10.44.41.11510.44.41.115
5310.44.41.116/3210.44.41.116 – 10.44.41.11610.44.41.116
5410.44.41.117/3210.44.41.117 – 10.44.41.11710.44.41.117
5510.44.41.118/3210.44.41.118 – 10.44.41.11810.44.41.118
5610.44.41.119/3210.44.41.119 – 10.44.41.11910.44.41.119
5710.44.41.120/3210.44.41.120 – 10.44.41.12010.44.41.120
5810.44.41.121/3210.44.41.121 – 10.44.41.12110.44.41.121
5910.44.41.122/3210.44.41.122 – 10.44.41.12210.44.41.122
6010.44.41.123/3210.44.41.123 – 10.44.41.12310.44.41.123
6110.44.41.124/3210.44.41.124 – 10.44.41.12410.44.41.124
6210.44.41.125/3210.44.41.125 – 10.44.41.12510.44.41.125
6310.44.41.126/3210.44.41.126 – 10.44.41.12610.44.41.126
6410.44.41.127/3210.44.41.127 – 10.44.41.12710.44.41.127
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 →