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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)10.167.58.192/26
network10.167.58.192/26
broadcast10.167.58.255
first host10.167.58.193
last host10.167.58.254
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.167.58.192/26
address00001010.10100111.00111010.11000000
subnet mask11111111.11111111.11111111.11000000
network00001010.10100111.00111010.11000000
broadcast00001010.10100111.00111010.11111111
green = network part, grey = host part
hex0x0aa73ac0
decimal178731712
reverse dns192.58.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:3ac0

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.167.58.192/3210.167.58.192 – 10.167.58.19210.167.58.192
210.167.58.193/3210.167.58.193 – 10.167.58.19310.167.58.193
310.167.58.194/3210.167.58.194 – 10.167.58.19410.167.58.194
410.167.58.195/3210.167.58.195 – 10.167.58.19510.167.58.195
510.167.58.196/3210.167.58.196 – 10.167.58.19610.167.58.196
610.167.58.197/3210.167.58.197 – 10.167.58.19710.167.58.197
710.167.58.198/3210.167.58.198 – 10.167.58.19810.167.58.198
810.167.58.199/3210.167.58.199 – 10.167.58.19910.167.58.199
910.167.58.200/3210.167.58.200 – 10.167.58.20010.167.58.200
1010.167.58.201/3210.167.58.201 – 10.167.58.20110.167.58.201
1110.167.58.202/3210.167.58.202 – 10.167.58.20210.167.58.202
1210.167.58.203/3210.167.58.203 – 10.167.58.20310.167.58.203
1310.167.58.204/3210.167.58.204 – 10.167.58.20410.167.58.204
1410.167.58.205/3210.167.58.205 – 10.167.58.20510.167.58.205
1510.167.58.206/3210.167.58.206 – 10.167.58.20610.167.58.206
1610.167.58.207/3210.167.58.207 – 10.167.58.20710.167.58.207
1710.167.58.208/3210.167.58.208 – 10.167.58.20810.167.58.208
1810.167.58.209/3210.167.58.209 – 10.167.58.20910.167.58.209
1910.167.58.210/3210.167.58.210 – 10.167.58.21010.167.58.210
2010.167.58.211/3210.167.58.211 – 10.167.58.21110.167.58.211
2110.167.58.212/3210.167.58.212 – 10.167.58.21210.167.58.212
2210.167.58.213/3210.167.58.213 – 10.167.58.21310.167.58.213
2310.167.58.214/3210.167.58.214 – 10.167.58.21410.167.58.214
2410.167.58.215/3210.167.58.215 – 10.167.58.21510.167.58.215
2510.167.58.216/3210.167.58.216 – 10.167.58.21610.167.58.216
2610.167.58.217/3210.167.58.217 – 10.167.58.21710.167.58.217
2710.167.58.218/3210.167.58.218 – 10.167.58.21810.167.58.218
2810.167.58.219/3210.167.58.219 – 10.167.58.21910.167.58.219
2910.167.58.220/3210.167.58.220 – 10.167.58.22010.167.58.220
3010.167.58.221/3210.167.58.221 – 10.167.58.22110.167.58.221
3110.167.58.222/3210.167.58.222 – 10.167.58.22210.167.58.222
3210.167.58.223/3210.167.58.223 – 10.167.58.22310.167.58.223
3310.167.58.224/3210.167.58.224 – 10.167.58.22410.167.58.224
3410.167.58.225/3210.167.58.225 – 10.167.58.22510.167.58.225
3510.167.58.226/3210.167.58.226 – 10.167.58.22610.167.58.226
3610.167.58.227/3210.167.58.227 – 10.167.58.22710.167.58.227
3710.167.58.228/3210.167.58.228 – 10.167.58.22810.167.58.228
3810.167.58.229/3210.167.58.229 – 10.167.58.22910.167.58.229
3910.167.58.230/3210.167.58.230 – 10.167.58.23010.167.58.230
4010.167.58.231/3210.167.58.231 – 10.167.58.23110.167.58.231
4110.167.58.232/3210.167.58.232 – 10.167.58.23210.167.58.232
4210.167.58.233/3210.167.58.233 – 10.167.58.23310.167.58.233
4310.167.58.234/3210.167.58.234 – 10.167.58.23410.167.58.234
4410.167.58.235/3210.167.58.235 – 10.167.58.23510.167.58.235
4510.167.58.236/3210.167.58.236 – 10.167.58.23610.167.58.236
4610.167.58.237/3210.167.58.237 – 10.167.58.23710.167.58.237
4710.167.58.238/3210.167.58.238 – 10.167.58.23810.167.58.238
4810.167.58.239/3210.167.58.239 – 10.167.58.23910.167.58.239
4910.167.58.240/3210.167.58.240 – 10.167.58.24010.167.58.240
5010.167.58.241/3210.167.58.241 – 10.167.58.24110.167.58.241
5110.167.58.242/3210.167.58.242 – 10.167.58.24210.167.58.242
5210.167.58.243/3210.167.58.243 – 10.167.58.24310.167.58.243
5310.167.58.244/3210.167.58.244 – 10.167.58.24410.167.58.244
5410.167.58.245/3210.167.58.245 – 10.167.58.24510.167.58.245
5510.167.58.246/3210.167.58.246 – 10.167.58.24610.167.58.246
5610.167.58.247/3210.167.58.247 – 10.167.58.24710.167.58.247
5710.167.58.248/3210.167.58.248 – 10.167.58.24810.167.58.248
5810.167.58.249/3210.167.58.249 – 10.167.58.24910.167.58.249
5910.167.58.250/3210.167.58.250 – 10.167.58.25010.167.58.250
6010.167.58.251/3210.167.58.251 – 10.167.58.25110.167.58.251
6110.167.58.252/3210.167.58.252 – 10.167.58.25210.167.58.252
6210.167.58.253/3210.167.58.253 – 10.167.58.25310.167.58.253
6310.167.58.254/3210.167.58.254 – 10.167.58.25410.167.58.254
6410.167.58.255/3210.167.58.255 – 10.167.58.25510.167.58.255
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 →