ip
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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)10.151.52.0/26
network10.151.52.0/26
broadcast10.151.52.63
first host10.151.52.1
last host10.151.52.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.151.52.0/26
address00001010.10010111.00110100.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.10010111.00110100.00000000
broadcast00001010.10010111.00110100.00111111
green = network part, grey = host part
hex0x0a973400
decimal177681408
reverse dns0.52.151.10.in-addr.arpa
ipv4-mapped::ffff:a97:3400

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.151.52.0/3210.151.52.0 – 10.151.52.010.151.52.0
210.151.52.1/3210.151.52.1 – 10.151.52.110.151.52.1
310.151.52.2/3210.151.52.2 – 10.151.52.210.151.52.2
410.151.52.3/3210.151.52.3 – 10.151.52.310.151.52.3
510.151.52.4/3210.151.52.4 – 10.151.52.410.151.52.4
610.151.52.5/3210.151.52.5 – 10.151.52.510.151.52.5
710.151.52.6/3210.151.52.6 – 10.151.52.610.151.52.6
810.151.52.7/3210.151.52.7 – 10.151.52.710.151.52.7
910.151.52.8/3210.151.52.8 – 10.151.52.810.151.52.8
1010.151.52.9/3210.151.52.9 – 10.151.52.910.151.52.9
1110.151.52.10/3210.151.52.10 – 10.151.52.1010.151.52.10
1210.151.52.11/3210.151.52.11 – 10.151.52.1110.151.52.11
1310.151.52.12/3210.151.52.12 – 10.151.52.1210.151.52.12
1410.151.52.13/3210.151.52.13 – 10.151.52.1310.151.52.13
1510.151.52.14/3210.151.52.14 – 10.151.52.1410.151.52.14
1610.151.52.15/3210.151.52.15 – 10.151.52.1510.151.52.15
1710.151.52.16/3210.151.52.16 – 10.151.52.1610.151.52.16
1810.151.52.17/3210.151.52.17 – 10.151.52.1710.151.52.17
1910.151.52.18/3210.151.52.18 – 10.151.52.1810.151.52.18
2010.151.52.19/3210.151.52.19 – 10.151.52.1910.151.52.19
2110.151.52.20/3210.151.52.20 – 10.151.52.2010.151.52.20
2210.151.52.21/3210.151.52.21 – 10.151.52.2110.151.52.21
2310.151.52.22/3210.151.52.22 – 10.151.52.2210.151.52.22
2410.151.52.23/3210.151.52.23 – 10.151.52.2310.151.52.23
2510.151.52.24/3210.151.52.24 – 10.151.52.2410.151.52.24
2610.151.52.25/3210.151.52.25 – 10.151.52.2510.151.52.25
2710.151.52.26/3210.151.52.26 – 10.151.52.2610.151.52.26
2810.151.52.27/3210.151.52.27 – 10.151.52.2710.151.52.27
2910.151.52.28/3210.151.52.28 – 10.151.52.2810.151.52.28
3010.151.52.29/3210.151.52.29 – 10.151.52.2910.151.52.29
3110.151.52.30/3210.151.52.30 – 10.151.52.3010.151.52.30
3210.151.52.31/3210.151.52.31 – 10.151.52.3110.151.52.31
3310.151.52.32/3210.151.52.32 – 10.151.52.3210.151.52.32
3410.151.52.33/3210.151.52.33 – 10.151.52.3310.151.52.33
3510.151.52.34/3210.151.52.34 – 10.151.52.3410.151.52.34
3610.151.52.35/3210.151.52.35 – 10.151.52.3510.151.52.35
3710.151.52.36/3210.151.52.36 – 10.151.52.3610.151.52.36
3810.151.52.37/3210.151.52.37 – 10.151.52.3710.151.52.37
3910.151.52.38/3210.151.52.38 – 10.151.52.3810.151.52.38
4010.151.52.39/3210.151.52.39 – 10.151.52.3910.151.52.39
4110.151.52.40/3210.151.52.40 – 10.151.52.4010.151.52.40
4210.151.52.41/3210.151.52.41 – 10.151.52.4110.151.52.41
4310.151.52.42/3210.151.52.42 – 10.151.52.4210.151.52.42
4410.151.52.43/3210.151.52.43 – 10.151.52.4310.151.52.43
4510.151.52.44/3210.151.52.44 – 10.151.52.4410.151.52.44
4610.151.52.45/3210.151.52.45 – 10.151.52.4510.151.52.45
4710.151.52.46/3210.151.52.46 – 10.151.52.4610.151.52.46
4810.151.52.47/3210.151.52.47 – 10.151.52.4710.151.52.47
4910.151.52.48/3210.151.52.48 – 10.151.52.4810.151.52.48
5010.151.52.49/3210.151.52.49 – 10.151.52.4910.151.52.49
5110.151.52.50/3210.151.52.50 – 10.151.52.5010.151.52.50
5210.151.52.51/3210.151.52.51 – 10.151.52.5110.151.52.51
5310.151.52.52/3210.151.52.52 – 10.151.52.5210.151.52.52
5410.151.52.53/3210.151.52.53 – 10.151.52.5310.151.52.53
5510.151.52.54/3210.151.52.54 – 10.151.52.5410.151.52.54
5610.151.52.55/3210.151.52.55 – 10.151.52.5510.151.52.55
5710.151.52.56/3210.151.52.56 – 10.151.52.5610.151.52.56
5810.151.52.57/3210.151.52.57 – 10.151.52.5710.151.52.57
5910.151.52.58/3210.151.52.58 – 10.151.52.5810.151.52.58
6010.151.52.59/3210.151.52.59 – 10.151.52.5910.151.52.59
6110.151.52.60/3210.151.52.60 – 10.151.52.6010.151.52.60
6210.151.52.61/3210.151.52.61 – 10.151.52.6110.151.52.61
6310.151.52.62/3210.151.52.62 – 10.151.52.6210.151.52.62
6410.151.52.63/3210.151.52.63 – 10.151.52.6310.151.52.63
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 →