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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)10.34.46.0/26
network10.34.46.0/26
broadcast10.34.46.63
first host10.34.46.1
last host10.34.46.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.34.46.0/26
address00001010.00100010.00101110.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00100010.00101110.00000000
broadcast00001010.00100010.00101110.00111111
green = network part, grey = host part
hex0x0a222e00
decimal170012160
reverse dns0.46.34.10.in-addr.arpa
ipv4-mapped::ffff:a22:2e00

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.34.46.0/3210.34.46.0 – 10.34.46.010.34.46.0
210.34.46.1/3210.34.46.1 – 10.34.46.110.34.46.1
310.34.46.2/3210.34.46.2 – 10.34.46.210.34.46.2
410.34.46.3/3210.34.46.3 – 10.34.46.310.34.46.3
510.34.46.4/3210.34.46.4 – 10.34.46.410.34.46.4
610.34.46.5/3210.34.46.5 – 10.34.46.510.34.46.5
710.34.46.6/3210.34.46.6 – 10.34.46.610.34.46.6
810.34.46.7/3210.34.46.7 – 10.34.46.710.34.46.7
910.34.46.8/3210.34.46.8 – 10.34.46.810.34.46.8
1010.34.46.9/3210.34.46.9 – 10.34.46.910.34.46.9
1110.34.46.10/3210.34.46.10 – 10.34.46.1010.34.46.10
1210.34.46.11/3210.34.46.11 – 10.34.46.1110.34.46.11
1310.34.46.12/3210.34.46.12 – 10.34.46.1210.34.46.12
1410.34.46.13/3210.34.46.13 – 10.34.46.1310.34.46.13
1510.34.46.14/3210.34.46.14 – 10.34.46.1410.34.46.14
1610.34.46.15/3210.34.46.15 – 10.34.46.1510.34.46.15
1710.34.46.16/3210.34.46.16 – 10.34.46.1610.34.46.16
1810.34.46.17/3210.34.46.17 – 10.34.46.1710.34.46.17
1910.34.46.18/3210.34.46.18 – 10.34.46.1810.34.46.18
2010.34.46.19/3210.34.46.19 – 10.34.46.1910.34.46.19
2110.34.46.20/3210.34.46.20 – 10.34.46.2010.34.46.20
2210.34.46.21/3210.34.46.21 – 10.34.46.2110.34.46.21
2310.34.46.22/3210.34.46.22 – 10.34.46.2210.34.46.22
2410.34.46.23/3210.34.46.23 – 10.34.46.2310.34.46.23
2510.34.46.24/3210.34.46.24 – 10.34.46.2410.34.46.24
2610.34.46.25/3210.34.46.25 – 10.34.46.2510.34.46.25
2710.34.46.26/3210.34.46.26 – 10.34.46.2610.34.46.26
2810.34.46.27/3210.34.46.27 – 10.34.46.2710.34.46.27
2910.34.46.28/3210.34.46.28 – 10.34.46.2810.34.46.28
3010.34.46.29/3210.34.46.29 – 10.34.46.2910.34.46.29
3110.34.46.30/3210.34.46.30 – 10.34.46.3010.34.46.30
3210.34.46.31/3210.34.46.31 – 10.34.46.3110.34.46.31
3310.34.46.32/3210.34.46.32 – 10.34.46.3210.34.46.32
3410.34.46.33/3210.34.46.33 – 10.34.46.3310.34.46.33
3510.34.46.34/3210.34.46.34 – 10.34.46.3410.34.46.34
3610.34.46.35/3210.34.46.35 – 10.34.46.3510.34.46.35
3710.34.46.36/3210.34.46.36 – 10.34.46.3610.34.46.36
3810.34.46.37/3210.34.46.37 – 10.34.46.3710.34.46.37
3910.34.46.38/3210.34.46.38 – 10.34.46.3810.34.46.38
4010.34.46.39/3210.34.46.39 – 10.34.46.3910.34.46.39
4110.34.46.40/3210.34.46.40 – 10.34.46.4010.34.46.40
4210.34.46.41/3210.34.46.41 – 10.34.46.4110.34.46.41
4310.34.46.42/3210.34.46.42 – 10.34.46.4210.34.46.42
4410.34.46.43/3210.34.46.43 – 10.34.46.4310.34.46.43
4510.34.46.44/3210.34.46.44 – 10.34.46.4410.34.46.44
4610.34.46.45/3210.34.46.45 – 10.34.46.4510.34.46.45
4710.34.46.46/3210.34.46.46 – 10.34.46.4610.34.46.46
4810.34.46.47/3210.34.46.47 – 10.34.46.4710.34.46.47
4910.34.46.48/3210.34.46.48 – 10.34.46.4810.34.46.48
5010.34.46.49/3210.34.46.49 – 10.34.46.4910.34.46.49
5110.34.46.50/3210.34.46.50 – 10.34.46.5010.34.46.50
5210.34.46.51/3210.34.46.51 – 10.34.46.5110.34.46.51
5310.34.46.52/3210.34.46.52 – 10.34.46.5210.34.46.52
5410.34.46.53/3210.34.46.53 – 10.34.46.5310.34.46.53
5510.34.46.54/3210.34.46.54 – 10.34.46.5410.34.46.54
5610.34.46.55/3210.34.46.55 – 10.34.46.5510.34.46.55
5710.34.46.56/3210.34.46.56 – 10.34.46.5610.34.46.56
5810.34.46.57/3210.34.46.57 – 10.34.46.5710.34.46.57
5910.34.46.58/3210.34.46.58 – 10.34.46.5810.34.46.58
6010.34.46.59/3210.34.46.59 – 10.34.46.5910.34.46.59
6110.34.46.60/3210.34.46.60 – 10.34.46.6010.34.46.60
6210.34.46.61/3210.34.46.61 – 10.34.46.6110.34.46.61
6310.34.46.62/3210.34.46.62 – 10.34.46.6210.34.46.62
6410.34.46.63/3210.34.46.63 – 10.34.46.6310.34.46.63
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 →