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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)10.76.148.0/22
network10.76.148.0/22
broadcast10.76.151.255
first host10.76.148.1
last host10.76.151.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.76.148.0/22
address00001010.01001100.10010100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01001100.10010100.00000000
broadcast00001010.01001100.10010111.11111111
green = network part, grey = host part
hex0x0a4c9400
decimal172790784
reverse dns0.148.76.10.in-addr.arpa
ipv4-mapped::ffff:a4c:9400

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.76.148.0/2810.76.148.1 – 10.76.148.1410.76.148.15
210.76.148.16/2810.76.148.17 – 10.76.148.3010.76.148.31
310.76.148.32/2810.76.148.33 – 10.76.148.4610.76.148.47
410.76.148.48/2810.76.148.49 – 10.76.148.6210.76.148.63
510.76.148.64/2810.76.148.65 – 10.76.148.7810.76.148.79
610.76.148.80/2810.76.148.81 – 10.76.148.9410.76.148.95
710.76.148.96/2810.76.148.97 – 10.76.148.11010.76.148.111
810.76.148.112/2810.76.148.113 – 10.76.148.12610.76.148.127
910.76.148.128/2810.76.148.129 – 10.76.148.14210.76.148.143
1010.76.148.144/2810.76.148.145 – 10.76.148.15810.76.148.159
1110.76.148.160/2810.76.148.161 – 10.76.148.17410.76.148.175
1210.76.148.176/2810.76.148.177 – 10.76.148.19010.76.148.191
1310.76.148.192/2810.76.148.193 – 10.76.148.20610.76.148.207
1410.76.148.208/2810.76.148.209 – 10.76.148.22210.76.148.223
1510.76.148.224/2810.76.148.225 – 10.76.148.23810.76.148.239
1610.76.148.240/2810.76.148.241 – 10.76.148.25410.76.148.255
1710.76.149.0/2810.76.149.1 – 10.76.149.1410.76.149.15
1810.76.149.16/2810.76.149.17 – 10.76.149.3010.76.149.31
1910.76.149.32/2810.76.149.33 – 10.76.149.4610.76.149.47
2010.76.149.48/2810.76.149.49 – 10.76.149.6210.76.149.63
2110.76.149.64/2810.76.149.65 – 10.76.149.7810.76.149.79
2210.76.149.80/2810.76.149.81 – 10.76.149.9410.76.149.95
2310.76.149.96/2810.76.149.97 – 10.76.149.11010.76.149.111
2410.76.149.112/2810.76.149.113 – 10.76.149.12610.76.149.127
2510.76.149.128/2810.76.149.129 – 10.76.149.14210.76.149.143
2610.76.149.144/2810.76.149.145 – 10.76.149.15810.76.149.159
2710.76.149.160/2810.76.149.161 – 10.76.149.17410.76.149.175
2810.76.149.176/2810.76.149.177 – 10.76.149.19010.76.149.191
2910.76.149.192/2810.76.149.193 – 10.76.149.20610.76.149.207
3010.76.149.208/2810.76.149.209 – 10.76.149.22210.76.149.223
3110.76.149.224/2810.76.149.225 – 10.76.149.23810.76.149.239
3210.76.149.240/2810.76.149.241 – 10.76.149.25410.76.149.255
3310.76.150.0/2810.76.150.1 – 10.76.150.1410.76.150.15
3410.76.150.16/2810.76.150.17 – 10.76.150.3010.76.150.31
3510.76.150.32/2810.76.150.33 – 10.76.150.4610.76.150.47
3610.76.150.48/2810.76.150.49 – 10.76.150.6210.76.150.63
3710.76.150.64/2810.76.150.65 – 10.76.150.7810.76.150.79
3810.76.150.80/2810.76.150.81 – 10.76.150.9410.76.150.95
3910.76.150.96/2810.76.150.97 – 10.76.150.11010.76.150.111
4010.76.150.112/2810.76.150.113 – 10.76.150.12610.76.150.127
4110.76.150.128/2810.76.150.129 – 10.76.150.14210.76.150.143
4210.76.150.144/2810.76.150.145 – 10.76.150.15810.76.150.159
4310.76.150.160/2810.76.150.161 – 10.76.150.17410.76.150.175
4410.76.150.176/2810.76.150.177 – 10.76.150.19010.76.150.191
4510.76.150.192/2810.76.150.193 – 10.76.150.20610.76.150.207
4610.76.150.208/2810.76.150.209 – 10.76.150.22210.76.150.223
4710.76.150.224/2810.76.150.225 – 10.76.150.23810.76.150.239
4810.76.150.240/2810.76.150.241 – 10.76.150.25410.76.150.255
4910.76.151.0/2810.76.151.1 – 10.76.151.1410.76.151.15
5010.76.151.16/2810.76.151.17 – 10.76.151.3010.76.151.31
5110.76.151.32/2810.76.151.33 – 10.76.151.4610.76.151.47
5210.76.151.48/2810.76.151.49 – 10.76.151.6210.76.151.63
5310.76.151.64/2810.76.151.65 – 10.76.151.7810.76.151.79
5410.76.151.80/2810.76.151.81 – 10.76.151.9410.76.151.95
5510.76.151.96/2810.76.151.97 – 10.76.151.11010.76.151.111
5610.76.151.112/2810.76.151.113 – 10.76.151.12610.76.151.127
5710.76.151.128/2810.76.151.129 – 10.76.151.14210.76.151.143
5810.76.151.144/2810.76.151.145 – 10.76.151.15810.76.151.159
5910.76.151.160/2810.76.151.161 – 10.76.151.17410.76.151.175
6010.76.151.176/2810.76.151.177 – 10.76.151.19010.76.151.191
6110.76.151.192/2810.76.151.193 – 10.76.151.20610.76.151.207
6210.76.151.208/2810.76.151.209 – 10.76.151.22210.76.151.223
6310.76.151.224/2810.76.151.225 – 10.76.151.23810.76.151.239
6410.76.151.240/2810.76.151.241 – 10.76.151.25410.76.151.255
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 →