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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)10.45.196.0/22
network10.45.196.0/22
broadcast10.45.199.255
first host10.45.196.1
last host10.45.199.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.45.196.0/22
address00001010.00101101.11000100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00101101.11000100.00000000
broadcast00001010.00101101.11000111.11111111
green = network part, grey = host part
hex0x0a2dc400
decimal170771456
reverse dns0.196.45.10.in-addr.arpa
ipv4-mapped::ffff:a2d:c400

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.45.196.0/2810.45.196.1 – 10.45.196.1410.45.196.15
210.45.196.16/2810.45.196.17 – 10.45.196.3010.45.196.31
310.45.196.32/2810.45.196.33 – 10.45.196.4610.45.196.47
410.45.196.48/2810.45.196.49 – 10.45.196.6210.45.196.63
510.45.196.64/2810.45.196.65 – 10.45.196.7810.45.196.79
610.45.196.80/2810.45.196.81 – 10.45.196.9410.45.196.95
710.45.196.96/2810.45.196.97 – 10.45.196.11010.45.196.111
810.45.196.112/2810.45.196.113 – 10.45.196.12610.45.196.127
910.45.196.128/2810.45.196.129 – 10.45.196.14210.45.196.143
1010.45.196.144/2810.45.196.145 – 10.45.196.15810.45.196.159
1110.45.196.160/2810.45.196.161 – 10.45.196.17410.45.196.175
1210.45.196.176/2810.45.196.177 – 10.45.196.19010.45.196.191
1310.45.196.192/2810.45.196.193 – 10.45.196.20610.45.196.207
1410.45.196.208/2810.45.196.209 – 10.45.196.22210.45.196.223
1510.45.196.224/2810.45.196.225 – 10.45.196.23810.45.196.239
1610.45.196.240/2810.45.196.241 – 10.45.196.25410.45.196.255
1710.45.197.0/2810.45.197.1 – 10.45.197.1410.45.197.15
1810.45.197.16/2810.45.197.17 – 10.45.197.3010.45.197.31
1910.45.197.32/2810.45.197.33 – 10.45.197.4610.45.197.47
2010.45.197.48/2810.45.197.49 – 10.45.197.6210.45.197.63
2110.45.197.64/2810.45.197.65 – 10.45.197.7810.45.197.79
2210.45.197.80/2810.45.197.81 – 10.45.197.9410.45.197.95
2310.45.197.96/2810.45.197.97 – 10.45.197.11010.45.197.111
2410.45.197.112/2810.45.197.113 – 10.45.197.12610.45.197.127
2510.45.197.128/2810.45.197.129 – 10.45.197.14210.45.197.143
2610.45.197.144/2810.45.197.145 – 10.45.197.15810.45.197.159
2710.45.197.160/2810.45.197.161 – 10.45.197.17410.45.197.175
2810.45.197.176/2810.45.197.177 – 10.45.197.19010.45.197.191
2910.45.197.192/2810.45.197.193 – 10.45.197.20610.45.197.207
3010.45.197.208/2810.45.197.209 – 10.45.197.22210.45.197.223
3110.45.197.224/2810.45.197.225 – 10.45.197.23810.45.197.239
3210.45.197.240/2810.45.197.241 – 10.45.197.25410.45.197.255
3310.45.198.0/2810.45.198.1 – 10.45.198.1410.45.198.15
3410.45.198.16/2810.45.198.17 – 10.45.198.3010.45.198.31
3510.45.198.32/2810.45.198.33 – 10.45.198.4610.45.198.47
3610.45.198.48/2810.45.198.49 – 10.45.198.6210.45.198.63
3710.45.198.64/2810.45.198.65 – 10.45.198.7810.45.198.79
3810.45.198.80/2810.45.198.81 – 10.45.198.9410.45.198.95
3910.45.198.96/2810.45.198.97 – 10.45.198.11010.45.198.111
4010.45.198.112/2810.45.198.113 – 10.45.198.12610.45.198.127
4110.45.198.128/2810.45.198.129 – 10.45.198.14210.45.198.143
4210.45.198.144/2810.45.198.145 – 10.45.198.15810.45.198.159
4310.45.198.160/2810.45.198.161 – 10.45.198.17410.45.198.175
4410.45.198.176/2810.45.198.177 – 10.45.198.19010.45.198.191
4510.45.198.192/2810.45.198.193 – 10.45.198.20610.45.198.207
4610.45.198.208/2810.45.198.209 – 10.45.198.22210.45.198.223
4710.45.198.224/2810.45.198.225 – 10.45.198.23810.45.198.239
4810.45.198.240/2810.45.198.241 – 10.45.198.25410.45.198.255
4910.45.199.0/2810.45.199.1 – 10.45.199.1410.45.199.15
5010.45.199.16/2810.45.199.17 – 10.45.199.3010.45.199.31
5110.45.199.32/2810.45.199.33 – 10.45.199.4610.45.199.47
5210.45.199.48/2810.45.199.49 – 10.45.199.6210.45.199.63
5310.45.199.64/2810.45.199.65 – 10.45.199.7810.45.199.79
5410.45.199.80/2810.45.199.81 – 10.45.199.9410.45.199.95
5510.45.199.96/2810.45.199.97 – 10.45.199.11010.45.199.111
5610.45.199.112/2810.45.199.113 – 10.45.199.12610.45.199.127
5710.45.199.128/2810.45.199.129 – 10.45.199.14210.45.199.143
5810.45.199.144/2810.45.199.145 – 10.45.199.15810.45.199.159
5910.45.199.160/2810.45.199.161 – 10.45.199.17410.45.199.175
6010.45.199.176/2810.45.199.177 – 10.45.199.19010.45.199.191
6110.45.199.192/2810.45.199.193 – 10.45.199.20610.45.199.207
6210.45.199.208/2810.45.199.209 – 10.45.199.22210.45.199.223
6310.45.199.224/2810.45.199.225 – 10.45.199.23810.45.199.239
6410.45.199.240/2810.45.199.241 – 10.45.199.25410.45.199.255
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 →