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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)10.7.148.0/26
network10.7.148.0/26
broadcast10.7.148.63
first host10.7.148.1
last host10.7.148.62
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.7.148.0/26
address00001010.00000111.10010100.00000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00000111.10010100.00000000
broadcast00001010.00000111.10010100.00111111
green = network part, grey = host part
hex0x0a079400
decimal168268800
reverse dns0.148.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:9400

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.7.148.0/3210.7.148.0 – 10.7.148.010.7.148.0
210.7.148.1/3210.7.148.1 – 10.7.148.110.7.148.1
310.7.148.2/3210.7.148.2 – 10.7.148.210.7.148.2
410.7.148.3/3210.7.148.3 – 10.7.148.310.7.148.3
510.7.148.4/3210.7.148.4 – 10.7.148.410.7.148.4
610.7.148.5/3210.7.148.5 – 10.7.148.510.7.148.5
710.7.148.6/3210.7.148.6 – 10.7.148.610.7.148.6
810.7.148.7/3210.7.148.7 – 10.7.148.710.7.148.7
910.7.148.8/3210.7.148.8 – 10.7.148.810.7.148.8
1010.7.148.9/3210.7.148.9 – 10.7.148.910.7.148.9
1110.7.148.10/3210.7.148.10 – 10.7.148.1010.7.148.10
1210.7.148.11/3210.7.148.11 – 10.7.148.1110.7.148.11
1310.7.148.12/3210.7.148.12 – 10.7.148.1210.7.148.12
1410.7.148.13/3210.7.148.13 – 10.7.148.1310.7.148.13
1510.7.148.14/3210.7.148.14 – 10.7.148.1410.7.148.14
1610.7.148.15/3210.7.148.15 – 10.7.148.1510.7.148.15
1710.7.148.16/3210.7.148.16 – 10.7.148.1610.7.148.16
1810.7.148.17/3210.7.148.17 – 10.7.148.1710.7.148.17
1910.7.148.18/3210.7.148.18 – 10.7.148.1810.7.148.18
2010.7.148.19/3210.7.148.19 – 10.7.148.1910.7.148.19
2110.7.148.20/3210.7.148.20 – 10.7.148.2010.7.148.20
2210.7.148.21/3210.7.148.21 – 10.7.148.2110.7.148.21
2310.7.148.22/3210.7.148.22 – 10.7.148.2210.7.148.22
2410.7.148.23/3210.7.148.23 – 10.7.148.2310.7.148.23
2510.7.148.24/3210.7.148.24 – 10.7.148.2410.7.148.24
2610.7.148.25/3210.7.148.25 – 10.7.148.2510.7.148.25
2710.7.148.26/3210.7.148.26 – 10.7.148.2610.7.148.26
2810.7.148.27/3210.7.148.27 – 10.7.148.2710.7.148.27
2910.7.148.28/3210.7.148.28 – 10.7.148.2810.7.148.28
3010.7.148.29/3210.7.148.29 – 10.7.148.2910.7.148.29
3110.7.148.30/3210.7.148.30 – 10.7.148.3010.7.148.30
3210.7.148.31/3210.7.148.31 – 10.7.148.3110.7.148.31
3310.7.148.32/3210.7.148.32 – 10.7.148.3210.7.148.32
3410.7.148.33/3210.7.148.33 – 10.7.148.3310.7.148.33
3510.7.148.34/3210.7.148.34 – 10.7.148.3410.7.148.34
3610.7.148.35/3210.7.148.35 – 10.7.148.3510.7.148.35
3710.7.148.36/3210.7.148.36 – 10.7.148.3610.7.148.36
3810.7.148.37/3210.7.148.37 – 10.7.148.3710.7.148.37
3910.7.148.38/3210.7.148.38 – 10.7.148.3810.7.148.38
4010.7.148.39/3210.7.148.39 – 10.7.148.3910.7.148.39
4110.7.148.40/3210.7.148.40 – 10.7.148.4010.7.148.40
4210.7.148.41/3210.7.148.41 – 10.7.148.4110.7.148.41
4310.7.148.42/3210.7.148.42 – 10.7.148.4210.7.148.42
4410.7.148.43/3210.7.148.43 – 10.7.148.4310.7.148.43
4510.7.148.44/3210.7.148.44 – 10.7.148.4410.7.148.44
4610.7.148.45/3210.7.148.45 – 10.7.148.4510.7.148.45
4710.7.148.46/3210.7.148.46 – 10.7.148.4610.7.148.46
4810.7.148.47/3210.7.148.47 – 10.7.148.4710.7.148.47
4910.7.148.48/3210.7.148.48 – 10.7.148.4810.7.148.48
5010.7.148.49/3210.7.148.49 – 10.7.148.4910.7.148.49
5110.7.148.50/3210.7.148.50 – 10.7.148.5010.7.148.50
5210.7.148.51/3210.7.148.51 – 10.7.148.5110.7.148.51
5310.7.148.52/3210.7.148.52 – 10.7.148.5210.7.148.52
5410.7.148.53/3210.7.148.53 – 10.7.148.5310.7.148.53
5510.7.148.54/3210.7.148.54 – 10.7.148.5410.7.148.54
5610.7.148.55/3210.7.148.55 – 10.7.148.5510.7.148.55
5710.7.148.56/3210.7.148.56 – 10.7.148.5610.7.148.56
5810.7.148.57/3210.7.148.57 – 10.7.148.5710.7.148.57
5910.7.148.58/3210.7.148.58 – 10.7.148.5810.7.148.58
6010.7.148.59/3210.7.148.59 – 10.7.148.5910.7.148.59
6110.7.148.60/3210.7.148.60 – 10.7.148.6010.7.148.60
6210.7.148.61/3210.7.148.61 – 10.7.148.6110.7.148.61
6310.7.148.62/3210.7.148.62 – 10.7.148.6210.7.148.62
6410.7.148.63/3210.7.148.63 – 10.7.148.6310.7.148.63
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 →