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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)10.64.49.0/26
network10.64.49.0/26
broadcast10.64.49.63
first host10.64.49.1
last host10.64.49.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.64.49.0/26
address00001010.01000000.00110001.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.01000000.00110001.00000000
broadcast00001010.01000000.00110001.00111111
green = network part, grey = host part
hex0x0a403100
decimal171979008
reverse dns0.49.64.10.in-addr.arpa
ipv4-mapped::ffff:a40:3100

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.64.49.0/3210.64.49.0 – 10.64.49.010.64.49.0
210.64.49.1/3210.64.49.1 – 10.64.49.110.64.49.1
310.64.49.2/3210.64.49.2 – 10.64.49.210.64.49.2
410.64.49.3/3210.64.49.3 – 10.64.49.310.64.49.3
510.64.49.4/3210.64.49.4 – 10.64.49.410.64.49.4
610.64.49.5/3210.64.49.5 – 10.64.49.510.64.49.5
710.64.49.6/3210.64.49.6 – 10.64.49.610.64.49.6
810.64.49.7/3210.64.49.7 – 10.64.49.710.64.49.7
910.64.49.8/3210.64.49.8 – 10.64.49.810.64.49.8
1010.64.49.9/3210.64.49.9 – 10.64.49.910.64.49.9
1110.64.49.10/3210.64.49.10 – 10.64.49.1010.64.49.10
1210.64.49.11/3210.64.49.11 – 10.64.49.1110.64.49.11
1310.64.49.12/3210.64.49.12 – 10.64.49.1210.64.49.12
1410.64.49.13/3210.64.49.13 – 10.64.49.1310.64.49.13
1510.64.49.14/3210.64.49.14 – 10.64.49.1410.64.49.14
1610.64.49.15/3210.64.49.15 – 10.64.49.1510.64.49.15
1710.64.49.16/3210.64.49.16 – 10.64.49.1610.64.49.16
1810.64.49.17/3210.64.49.17 – 10.64.49.1710.64.49.17
1910.64.49.18/3210.64.49.18 – 10.64.49.1810.64.49.18
2010.64.49.19/3210.64.49.19 – 10.64.49.1910.64.49.19
2110.64.49.20/3210.64.49.20 – 10.64.49.2010.64.49.20
2210.64.49.21/3210.64.49.21 – 10.64.49.2110.64.49.21
2310.64.49.22/3210.64.49.22 – 10.64.49.2210.64.49.22
2410.64.49.23/3210.64.49.23 – 10.64.49.2310.64.49.23
2510.64.49.24/3210.64.49.24 – 10.64.49.2410.64.49.24
2610.64.49.25/3210.64.49.25 – 10.64.49.2510.64.49.25
2710.64.49.26/3210.64.49.26 – 10.64.49.2610.64.49.26
2810.64.49.27/3210.64.49.27 – 10.64.49.2710.64.49.27
2910.64.49.28/3210.64.49.28 – 10.64.49.2810.64.49.28
3010.64.49.29/3210.64.49.29 – 10.64.49.2910.64.49.29
3110.64.49.30/3210.64.49.30 – 10.64.49.3010.64.49.30
3210.64.49.31/3210.64.49.31 – 10.64.49.3110.64.49.31
3310.64.49.32/3210.64.49.32 – 10.64.49.3210.64.49.32
3410.64.49.33/3210.64.49.33 – 10.64.49.3310.64.49.33
3510.64.49.34/3210.64.49.34 – 10.64.49.3410.64.49.34
3610.64.49.35/3210.64.49.35 – 10.64.49.3510.64.49.35
3710.64.49.36/3210.64.49.36 – 10.64.49.3610.64.49.36
3810.64.49.37/3210.64.49.37 – 10.64.49.3710.64.49.37
3910.64.49.38/3210.64.49.38 – 10.64.49.3810.64.49.38
4010.64.49.39/3210.64.49.39 – 10.64.49.3910.64.49.39
4110.64.49.40/3210.64.49.40 – 10.64.49.4010.64.49.40
4210.64.49.41/3210.64.49.41 – 10.64.49.4110.64.49.41
4310.64.49.42/3210.64.49.42 – 10.64.49.4210.64.49.42
4410.64.49.43/3210.64.49.43 – 10.64.49.4310.64.49.43
4510.64.49.44/3210.64.49.44 – 10.64.49.4410.64.49.44
4610.64.49.45/3210.64.49.45 – 10.64.49.4510.64.49.45
4710.64.49.46/3210.64.49.46 – 10.64.49.4610.64.49.46
4810.64.49.47/3210.64.49.47 – 10.64.49.4710.64.49.47
4910.64.49.48/3210.64.49.48 – 10.64.49.4810.64.49.48
5010.64.49.49/3210.64.49.49 – 10.64.49.4910.64.49.49
5110.64.49.50/3210.64.49.50 – 10.64.49.5010.64.49.50
5210.64.49.51/3210.64.49.51 – 10.64.49.5110.64.49.51
5310.64.49.52/3210.64.49.52 – 10.64.49.5210.64.49.52
5410.64.49.53/3210.64.49.53 – 10.64.49.5310.64.49.53
5510.64.49.54/3210.64.49.54 – 10.64.49.5410.64.49.54
5610.64.49.55/3210.64.49.55 – 10.64.49.5510.64.49.55
5710.64.49.56/3210.64.49.56 – 10.64.49.5610.64.49.56
5810.64.49.57/3210.64.49.57 – 10.64.49.5710.64.49.57
5910.64.49.58/3210.64.49.58 – 10.64.49.5810.64.49.58
6010.64.49.59/3210.64.49.59 – 10.64.49.5910.64.49.59
6110.64.49.60/3210.64.49.60 – 10.64.49.6010.64.49.60
6210.64.49.61/3210.64.49.61 – 10.64.49.6110.64.49.61
6310.64.49.62/3210.64.49.62 – 10.64.49.6210.64.49.62
6410.64.49.63/3210.64.49.63 – 10.64.49.6310.64.49.63
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 →