ip
ipku.in

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)10.185.196.0/22
network10.185.196.0/22
broadcast10.185.199.255
first host10.185.196.1
last host10.185.199.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.185.196.0/22
address00001010.10111001.11000100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10111001.11000100.00000000
broadcast00001010.10111001.11000111.11111111
green = network part, grey = host part
hex0x0ab9c400
decimal179946496
reverse dns0.196.185.10.in-addr.arpa
ipv4-mapped::ffff:ab9:c400

/22 split into /32 · 1,024 subnets

close ×
#networkhost rangebroadcast
110.185.196.0/3210.185.196.0 – 10.185.196.010.185.196.0
210.185.196.1/3210.185.196.1 – 10.185.196.110.185.196.1
310.185.196.2/3210.185.196.2 – 10.185.196.210.185.196.2
410.185.196.3/3210.185.196.3 – 10.185.196.310.185.196.3
510.185.196.4/3210.185.196.4 – 10.185.196.410.185.196.4
610.185.196.5/3210.185.196.5 – 10.185.196.510.185.196.5
710.185.196.6/3210.185.196.6 – 10.185.196.610.185.196.6
810.185.196.7/3210.185.196.7 – 10.185.196.710.185.196.7
910.185.196.8/3210.185.196.8 – 10.185.196.810.185.196.8
1010.185.196.9/3210.185.196.9 – 10.185.196.910.185.196.9
1110.185.196.10/3210.185.196.10 – 10.185.196.1010.185.196.10
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2010.185.196.19/3210.185.196.19 – 10.185.196.1910.185.196.19
2110.185.196.20/3210.185.196.20 – 10.185.196.2010.185.196.20
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22910.185.196.228/3210.185.196.228 – 10.185.196.22810.185.196.228
23010.185.196.229/3210.185.196.229 – 10.185.196.22910.185.196.229
23110.185.196.230/3210.185.196.230 – 10.185.196.23010.185.196.230
23210.185.196.231/3210.185.196.231 – 10.185.196.23110.185.196.231
23310.185.196.232/3210.185.196.232 – 10.185.196.23210.185.196.232
23410.185.196.233/3210.185.196.233 – 10.185.196.23310.185.196.233
23510.185.196.234/3210.185.196.234 – 10.185.196.23410.185.196.234
23610.185.196.235/3210.185.196.235 – 10.185.196.23510.185.196.235
23710.185.196.236/3210.185.196.236 – 10.185.196.23610.185.196.236
23810.185.196.237/3210.185.196.237 – 10.185.196.23710.185.196.237
23910.185.196.238/3210.185.196.238 – 10.185.196.23810.185.196.238
24010.185.196.239/3210.185.196.239 – 10.185.196.23910.185.196.239
24110.185.196.240/3210.185.196.240 – 10.185.196.24010.185.196.240
24210.185.196.241/3210.185.196.241 – 10.185.196.24110.185.196.241
24310.185.196.242/3210.185.196.242 – 10.185.196.24210.185.196.242
24410.185.196.243/3210.185.196.243 – 10.185.196.24310.185.196.243
24510.185.196.244/3210.185.196.244 – 10.185.196.24410.185.196.244
24610.185.196.245/3210.185.196.245 – 10.185.196.24510.185.196.245
24710.185.196.246/3210.185.196.246 – 10.185.196.24610.185.196.246
24810.185.196.247/3210.185.196.247 – 10.185.196.24710.185.196.247
24910.185.196.248/3210.185.196.248 – 10.185.196.24810.185.196.248
25010.185.196.249/3210.185.196.249 – 10.185.196.24910.185.196.249
25110.185.196.250/3210.185.196.250 – 10.185.196.25010.185.196.250
25210.185.196.251/3210.185.196.251 – 10.185.196.25110.185.196.251
25310.185.196.252/3210.185.196.252 – 10.185.196.25210.185.196.252
25410.185.196.253/3210.185.196.253 – 10.185.196.25310.185.196.253
25510.185.196.254/3210.185.196.254 – 10.185.196.25410.185.196.254
25610.185.196.255/3210.185.196.255 – 10.185.196.25510.185.196.255

showing 256 of 1,024

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 →