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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)10.44.48.0/22
network10.44.48.0/22
broadcast10.44.51.255
first host10.44.48.1
last host10.44.51.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.44.48.0/22
address00001010.00101100.00110000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00101100.00110000.00000000
broadcast00001010.00101100.00110011.11111111
green = network part, grey = host part
hex0x0a2c3000
decimal170668032
reverse dns0.48.44.10.in-addr.arpa
ipv4-mapped::ffff:a2c:3000

/22 split into /27 · 32 subnets

close ×
#networkhost rangebroadcast
110.44.48.0/2710.44.48.1 – 10.44.48.3010.44.48.31
210.44.48.32/2710.44.48.33 – 10.44.48.6210.44.48.63
310.44.48.64/2710.44.48.65 – 10.44.48.9410.44.48.95
410.44.48.96/2710.44.48.97 – 10.44.48.12610.44.48.127
510.44.48.128/2710.44.48.129 – 10.44.48.15810.44.48.159
610.44.48.160/2710.44.48.161 – 10.44.48.19010.44.48.191
710.44.48.192/2710.44.48.193 – 10.44.48.22210.44.48.223
810.44.48.224/2710.44.48.225 – 10.44.48.25410.44.48.255
910.44.49.0/2710.44.49.1 – 10.44.49.3010.44.49.31
1010.44.49.32/2710.44.49.33 – 10.44.49.6210.44.49.63
1110.44.49.64/2710.44.49.65 – 10.44.49.9410.44.49.95
1210.44.49.96/2710.44.49.97 – 10.44.49.12610.44.49.127
1310.44.49.128/2710.44.49.129 – 10.44.49.15810.44.49.159
1410.44.49.160/2710.44.49.161 – 10.44.49.19010.44.49.191
1510.44.49.192/2710.44.49.193 – 10.44.49.22210.44.49.223
1610.44.49.224/2710.44.49.225 – 10.44.49.25410.44.49.255
1710.44.50.0/2710.44.50.1 – 10.44.50.3010.44.50.31
1810.44.50.32/2710.44.50.33 – 10.44.50.6210.44.50.63
1910.44.50.64/2710.44.50.65 – 10.44.50.9410.44.50.95
2010.44.50.96/2710.44.50.97 – 10.44.50.12610.44.50.127
2110.44.50.128/2710.44.50.129 – 10.44.50.15810.44.50.159
2210.44.50.160/2710.44.50.161 – 10.44.50.19010.44.50.191
2310.44.50.192/2710.44.50.193 – 10.44.50.22210.44.50.223
2410.44.50.224/2710.44.50.225 – 10.44.50.25410.44.50.255
2510.44.51.0/2710.44.51.1 – 10.44.51.3010.44.51.31
2610.44.51.32/2710.44.51.33 – 10.44.51.6210.44.51.63
2710.44.51.64/2710.44.51.65 – 10.44.51.9410.44.51.95
2810.44.51.96/2710.44.51.97 – 10.44.51.12610.44.51.127
2910.44.51.128/2710.44.51.129 – 10.44.51.15810.44.51.159
3010.44.51.160/2710.44.51.161 – 10.44.51.19010.44.51.191
3110.44.51.192/2710.44.51.193 – 10.44.51.22210.44.51.223
3210.44.51.224/2710.44.51.225 – 10.44.51.25410.44.51.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /22
/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-
/22255.255.252.01,0241,0221
/23255.255.254.05125102 split →
/24255.255.255.02562544 split →
/25255.255.255.1281281268 split →
/26255.255.255.192646216 split →
/27255.255.255.224323032 split →
/28255.255.255.240161464 split →
/29255.255.255.24886128 split →
/30255.255.255.25242256 split →
/31255.255.255.25422512 split →
/32255.255.255.255111,024 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 →