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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)10.0.54.192/26
network10.0.54.192/26
broadcast10.0.54.255
first host10.0.54.193
last host10.0.54.254
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.0.54.192/26
address00001010.00000000.00110110.11000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00000000.00110110.11000000
broadcast00001010.00000000.00110110.11111111
green = network part, grey = host part
hex0x0a0036c0
decimal167786176
reverse dns192.54.0.10.in-addr.arpa
ipv4-mapped::ffff:a00:36c0

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.0.54.192/3210.0.54.192 – 10.0.54.19210.0.54.192
210.0.54.193/3210.0.54.193 – 10.0.54.19310.0.54.193
310.0.54.194/3210.0.54.194 – 10.0.54.19410.0.54.194
410.0.54.195/3210.0.54.195 – 10.0.54.19510.0.54.195
510.0.54.196/3210.0.54.196 – 10.0.54.19610.0.54.196
610.0.54.197/3210.0.54.197 – 10.0.54.19710.0.54.197
710.0.54.198/3210.0.54.198 – 10.0.54.19810.0.54.198
810.0.54.199/3210.0.54.199 – 10.0.54.19910.0.54.199
910.0.54.200/3210.0.54.200 – 10.0.54.20010.0.54.200
1010.0.54.201/3210.0.54.201 – 10.0.54.20110.0.54.201
1110.0.54.202/3210.0.54.202 – 10.0.54.20210.0.54.202
1210.0.54.203/3210.0.54.203 – 10.0.54.20310.0.54.203
1310.0.54.204/3210.0.54.204 – 10.0.54.20410.0.54.204
1410.0.54.205/3210.0.54.205 – 10.0.54.20510.0.54.205
1510.0.54.206/3210.0.54.206 – 10.0.54.20610.0.54.206
1610.0.54.207/3210.0.54.207 – 10.0.54.20710.0.54.207
1710.0.54.208/3210.0.54.208 – 10.0.54.20810.0.54.208
1810.0.54.209/3210.0.54.209 – 10.0.54.20910.0.54.209
1910.0.54.210/3210.0.54.210 – 10.0.54.21010.0.54.210
2010.0.54.211/3210.0.54.211 – 10.0.54.21110.0.54.211
2110.0.54.212/3210.0.54.212 – 10.0.54.21210.0.54.212
2210.0.54.213/3210.0.54.213 – 10.0.54.21310.0.54.213
2310.0.54.214/3210.0.54.214 – 10.0.54.21410.0.54.214
2410.0.54.215/3210.0.54.215 – 10.0.54.21510.0.54.215
2510.0.54.216/3210.0.54.216 – 10.0.54.21610.0.54.216
2610.0.54.217/3210.0.54.217 – 10.0.54.21710.0.54.217
2710.0.54.218/3210.0.54.218 – 10.0.54.21810.0.54.218
2810.0.54.219/3210.0.54.219 – 10.0.54.21910.0.54.219
2910.0.54.220/3210.0.54.220 – 10.0.54.22010.0.54.220
3010.0.54.221/3210.0.54.221 – 10.0.54.22110.0.54.221
3110.0.54.222/3210.0.54.222 – 10.0.54.22210.0.54.222
3210.0.54.223/3210.0.54.223 – 10.0.54.22310.0.54.223
3310.0.54.224/3210.0.54.224 – 10.0.54.22410.0.54.224
3410.0.54.225/3210.0.54.225 – 10.0.54.22510.0.54.225
3510.0.54.226/3210.0.54.226 – 10.0.54.22610.0.54.226
3610.0.54.227/3210.0.54.227 – 10.0.54.22710.0.54.227
3710.0.54.228/3210.0.54.228 – 10.0.54.22810.0.54.228
3810.0.54.229/3210.0.54.229 – 10.0.54.22910.0.54.229
3910.0.54.230/3210.0.54.230 – 10.0.54.23010.0.54.230
4010.0.54.231/3210.0.54.231 – 10.0.54.23110.0.54.231
4110.0.54.232/3210.0.54.232 – 10.0.54.23210.0.54.232
4210.0.54.233/3210.0.54.233 – 10.0.54.23310.0.54.233
4310.0.54.234/3210.0.54.234 – 10.0.54.23410.0.54.234
4410.0.54.235/3210.0.54.235 – 10.0.54.23510.0.54.235
4510.0.54.236/3210.0.54.236 – 10.0.54.23610.0.54.236
4610.0.54.237/3210.0.54.237 – 10.0.54.23710.0.54.237
4710.0.54.238/3210.0.54.238 – 10.0.54.23810.0.54.238
4810.0.54.239/3210.0.54.239 – 10.0.54.23910.0.54.239
4910.0.54.240/3210.0.54.240 – 10.0.54.24010.0.54.240
5010.0.54.241/3210.0.54.241 – 10.0.54.24110.0.54.241
5110.0.54.242/3210.0.54.242 – 10.0.54.24210.0.54.242
5210.0.54.243/3210.0.54.243 – 10.0.54.24310.0.54.243
5310.0.54.244/3210.0.54.244 – 10.0.54.24410.0.54.244
5410.0.54.245/3210.0.54.245 – 10.0.54.24510.0.54.245
5510.0.54.246/3210.0.54.246 – 10.0.54.24610.0.54.246
5610.0.54.247/3210.0.54.247 – 10.0.54.24710.0.54.247
5710.0.54.248/3210.0.54.248 – 10.0.54.24810.0.54.248
5810.0.54.249/3210.0.54.249 – 10.0.54.24910.0.54.249
5910.0.54.250/3210.0.54.250 – 10.0.54.25010.0.54.250
6010.0.54.251/3210.0.54.251 – 10.0.54.25110.0.54.251
6110.0.54.252/3210.0.54.252 – 10.0.54.25210.0.54.252
6210.0.54.253/3210.0.54.253 – 10.0.54.25310.0.54.253
6310.0.54.254/3210.0.54.254 – 10.0.54.25410.0.54.254
6410.0.54.255/3210.0.54.255 – 10.0.54.25510.0.54.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /26
/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-
/24255.255.255.0256254-
/25255.255.255.128128126-
/26255.255.255.19264621
/27255.255.255.22432302 split →
/28255.255.255.24016144 split →
/29255.255.255.248868 split →
/30255.255.255.2524216 split →
/31255.255.255.2542232 split →
/32255.255.255.2551164 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 →