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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)10.95.63.0/26
network10.95.63.0/26
broadcast10.95.63.63
first host10.95.63.1
last host10.95.63.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.95.63.0/26
address00001010.01011111.00111111.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.01011111.00111111.00000000
broadcast00001010.01011111.00111111.00111111
green = network part, grey = host part
hex0x0a5f3f00
decimal174014208
reverse dns0.63.95.10.in-addr.arpa
ipv4-mapped::ffff:a5f:3f00

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.95.63.0/3210.95.63.0 – 10.95.63.010.95.63.0
210.95.63.1/3210.95.63.1 – 10.95.63.110.95.63.1
310.95.63.2/3210.95.63.2 – 10.95.63.210.95.63.2
410.95.63.3/3210.95.63.3 – 10.95.63.310.95.63.3
510.95.63.4/3210.95.63.4 – 10.95.63.410.95.63.4
610.95.63.5/3210.95.63.5 – 10.95.63.510.95.63.5
710.95.63.6/3210.95.63.6 – 10.95.63.610.95.63.6
810.95.63.7/3210.95.63.7 – 10.95.63.710.95.63.7
910.95.63.8/3210.95.63.8 – 10.95.63.810.95.63.8
1010.95.63.9/3210.95.63.9 – 10.95.63.910.95.63.9
1110.95.63.10/3210.95.63.10 – 10.95.63.1010.95.63.10
1210.95.63.11/3210.95.63.11 – 10.95.63.1110.95.63.11
1310.95.63.12/3210.95.63.12 – 10.95.63.1210.95.63.12
1410.95.63.13/3210.95.63.13 – 10.95.63.1310.95.63.13
1510.95.63.14/3210.95.63.14 – 10.95.63.1410.95.63.14
1610.95.63.15/3210.95.63.15 – 10.95.63.1510.95.63.15
1710.95.63.16/3210.95.63.16 – 10.95.63.1610.95.63.16
1810.95.63.17/3210.95.63.17 – 10.95.63.1710.95.63.17
1910.95.63.18/3210.95.63.18 – 10.95.63.1810.95.63.18
2010.95.63.19/3210.95.63.19 – 10.95.63.1910.95.63.19
2110.95.63.20/3210.95.63.20 – 10.95.63.2010.95.63.20
2210.95.63.21/3210.95.63.21 – 10.95.63.2110.95.63.21
2310.95.63.22/3210.95.63.22 – 10.95.63.2210.95.63.22
2410.95.63.23/3210.95.63.23 – 10.95.63.2310.95.63.23
2510.95.63.24/3210.95.63.24 – 10.95.63.2410.95.63.24
2610.95.63.25/3210.95.63.25 – 10.95.63.2510.95.63.25
2710.95.63.26/3210.95.63.26 – 10.95.63.2610.95.63.26
2810.95.63.27/3210.95.63.27 – 10.95.63.2710.95.63.27
2910.95.63.28/3210.95.63.28 – 10.95.63.2810.95.63.28
3010.95.63.29/3210.95.63.29 – 10.95.63.2910.95.63.29
3110.95.63.30/3210.95.63.30 – 10.95.63.3010.95.63.30
3210.95.63.31/3210.95.63.31 – 10.95.63.3110.95.63.31
3310.95.63.32/3210.95.63.32 – 10.95.63.3210.95.63.32
3410.95.63.33/3210.95.63.33 – 10.95.63.3310.95.63.33
3510.95.63.34/3210.95.63.34 – 10.95.63.3410.95.63.34
3610.95.63.35/3210.95.63.35 – 10.95.63.3510.95.63.35
3710.95.63.36/3210.95.63.36 – 10.95.63.3610.95.63.36
3810.95.63.37/3210.95.63.37 – 10.95.63.3710.95.63.37
3910.95.63.38/3210.95.63.38 – 10.95.63.3810.95.63.38
4010.95.63.39/3210.95.63.39 – 10.95.63.3910.95.63.39
4110.95.63.40/3210.95.63.40 – 10.95.63.4010.95.63.40
4210.95.63.41/3210.95.63.41 – 10.95.63.4110.95.63.41
4310.95.63.42/3210.95.63.42 – 10.95.63.4210.95.63.42
4410.95.63.43/3210.95.63.43 – 10.95.63.4310.95.63.43
4510.95.63.44/3210.95.63.44 – 10.95.63.4410.95.63.44
4610.95.63.45/3210.95.63.45 – 10.95.63.4510.95.63.45
4710.95.63.46/3210.95.63.46 – 10.95.63.4610.95.63.46
4810.95.63.47/3210.95.63.47 – 10.95.63.4710.95.63.47
4910.95.63.48/3210.95.63.48 – 10.95.63.4810.95.63.48
5010.95.63.49/3210.95.63.49 – 10.95.63.4910.95.63.49
5110.95.63.50/3210.95.63.50 – 10.95.63.5010.95.63.50
5210.95.63.51/3210.95.63.51 – 10.95.63.5110.95.63.51
5310.95.63.52/3210.95.63.52 – 10.95.63.5210.95.63.52
5410.95.63.53/3210.95.63.53 – 10.95.63.5310.95.63.53
5510.95.63.54/3210.95.63.54 – 10.95.63.5410.95.63.54
5610.95.63.55/3210.95.63.55 – 10.95.63.5510.95.63.55
5710.95.63.56/3210.95.63.56 – 10.95.63.5610.95.63.56
5810.95.63.57/3210.95.63.57 – 10.95.63.5710.95.63.57
5910.95.63.58/3210.95.63.58 – 10.95.63.5810.95.63.58
6010.95.63.59/3210.95.63.59 – 10.95.63.5910.95.63.59
6110.95.63.60/3210.95.63.60 – 10.95.63.6010.95.63.60
6210.95.63.61/3210.95.63.61 – 10.95.63.6110.95.63.61
6310.95.63.62/3210.95.63.62 – 10.95.63.6210.95.63.62
6410.95.63.63/3210.95.63.63 – 10.95.63.6310.95.63.63
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 →