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)10.149.83.0/24
network10.149.83.0/24
broadcast10.149.83.255
first host10.149.83.1
last host10.149.83.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.149.83.0/24
address00001010.10010101.01010011.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.10010101.01010011.00000000
broadcast00001010.10010101.01010011.11111111
green = network part, grey = host part
hex0x0a955300
decimal177558272
reverse dns0.83.149.10.in-addr.arpa
ipv4-mapped::ffff:a95:5300

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.149.83.0/3210.149.83.0 – 10.149.83.010.149.83.0
210.149.83.1/3210.149.83.1 – 10.149.83.110.149.83.1
310.149.83.2/3210.149.83.2 – 10.149.83.210.149.83.2
410.149.83.3/3210.149.83.3 – 10.149.83.310.149.83.3
510.149.83.4/3210.149.83.4 – 10.149.83.410.149.83.4
610.149.83.5/3210.149.83.5 – 10.149.83.510.149.83.5
710.149.83.6/3210.149.83.6 – 10.149.83.610.149.83.6
810.149.83.7/3210.149.83.7 – 10.149.83.710.149.83.7
910.149.83.8/3210.149.83.8 – 10.149.83.810.149.83.8
1010.149.83.9/3210.149.83.9 – 10.149.83.910.149.83.9
1110.149.83.10/3210.149.83.10 – 10.149.83.1010.149.83.10
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1910.149.83.18/3210.149.83.18 – 10.149.83.1810.149.83.18
2010.149.83.19/3210.149.83.19 – 10.149.83.1910.149.83.19
2110.149.83.20/3210.149.83.20 – 10.149.83.2010.149.83.20
2210.149.83.21/3210.149.83.21 – 10.149.83.2110.149.83.21
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14110.149.83.140/3210.149.83.140 – 10.149.83.14010.149.83.140
14210.149.83.141/3210.149.83.141 – 10.149.83.14110.149.83.141
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15010.149.83.149/3210.149.83.149 – 10.149.83.14910.149.83.149
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22010.149.83.219/3210.149.83.219 – 10.149.83.21910.149.83.219
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22910.149.83.228/3210.149.83.228 – 10.149.83.22810.149.83.228
23010.149.83.229/3210.149.83.229 – 10.149.83.22910.149.83.229
23110.149.83.230/3210.149.83.230 – 10.149.83.23010.149.83.230
23210.149.83.231/3210.149.83.231 – 10.149.83.23110.149.83.231
23310.149.83.232/3210.149.83.232 – 10.149.83.23210.149.83.232
23410.149.83.233/3210.149.83.233 – 10.149.83.23310.149.83.233
23510.149.83.234/3210.149.83.234 – 10.149.83.23410.149.83.234
23610.149.83.235/3210.149.83.235 – 10.149.83.23510.149.83.235
23710.149.83.236/3210.149.83.236 – 10.149.83.23610.149.83.236
23810.149.83.237/3210.149.83.237 – 10.149.83.23710.149.83.237
23910.149.83.238/3210.149.83.238 – 10.149.83.23810.149.83.238
24010.149.83.239/3210.149.83.239 – 10.149.83.23910.149.83.239
24110.149.83.240/3210.149.83.240 – 10.149.83.24010.149.83.240
24210.149.83.241/3210.149.83.241 – 10.149.83.24110.149.83.241
24310.149.83.242/3210.149.83.242 – 10.149.83.24210.149.83.242
24410.149.83.243/3210.149.83.243 – 10.149.83.24310.149.83.243
24510.149.83.244/3210.149.83.244 – 10.149.83.24410.149.83.244
24610.149.83.245/3210.149.83.245 – 10.149.83.24510.149.83.245
24710.149.83.246/3210.149.83.246 – 10.149.83.24610.149.83.246
24810.149.83.247/3210.149.83.247 – 10.149.83.24710.149.83.247
24910.149.83.248/3210.149.83.248 – 10.149.83.24810.149.83.248
25010.149.83.249/3210.149.83.249 – 10.149.83.24910.149.83.249
25110.149.83.250/3210.149.83.250 – 10.149.83.25010.149.83.250
25210.149.83.251/3210.149.83.251 – 10.149.83.25110.149.83.251
25310.149.83.252/3210.149.83.252 – 10.149.83.25210.149.83.252
25410.149.83.253/3210.149.83.253 – 10.149.83.25310.149.83.253
25510.149.83.254/3210.149.83.254 – 10.149.83.25410.149.83.254
25610.149.83.255/3210.149.83.255 – 10.149.83.25510.149.83.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /24
/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-
/24255.255.255.02562541
/25255.255.255.1281281262 split →
/26255.255.255.19264624 split →
/27255.255.255.22432308 split →
/28255.255.255.240161416 split →
/29255.255.255.2488632 split →
/30255.255.255.2524264 split →
/31255.255.255.25422128 split →
/32255.255.255.25511256 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 →