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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)10.167.161.192/26
network10.167.161.192/26
broadcast10.167.161.255
first host10.167.161.193
last host10.167.161.254
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.167.161.192/26
address00001010.10100111.10100001.11000000
subnet mask11111111.11111111.11111111.11000000
network00001010.10100111.10100001.11000000
broadcast00001010.10100111.10100001.11111111
green = network part, grey = host part
hex0x0aa7a1c0
decimal178758080
reverse dns192.161.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:a1c0

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.167.161.192/3210.167.161.192 – 10.167.161.19210.167.161.192
210.167.161.193/3210.167.161.193 – 10.167.161.19310.167.161.193
310.167.161.194/3210.167.161.194 – 10.167.161.19410.167.161.194
410.167.161.195/3210.167.161.195 – 10.167.161.19510.167.161.195
510.167.161.196/3210.167.161.196 – 10.167.161.19610.167.161.196
610.167.161.197/3210.167.161.197 – 10.167.161.19710.167.161.197
710.167.161.198/3210.167.161.198 – 10.167.161.19810.167.161.198
810.167.161.199/3210.167.161.199 – 10.167.161.19910.167.161.199
910.167.161.200/3210.167.161.200 – 10.167.161.20010.167.161.200
1010.167.161.201/3210.167.161.201 – 10.167.161.20110.167.161.201
1110.167.161.202/3210.167.161.202 – 10.167.161.20210.167.161.202
1210.167.161.203/3210.167.161.203 – 10.167.161.20310.167.161.203
1310.167.161.204/3210.167.161.204 – 10.167.161.20410.167.161.204
1410.167.161.205/3210.167.161.205 – 10.167.161.20510.167.161.205
1510.167.161.206/3210.167.161.206 – 10.167.161.20610.167.161.206
1610.167.161.207/3210.167.161.207 – 10.167.161.20710.167.161.207
1710.167.161.208/3210.167.161.208 – 10.167.161.20810.167.161.208
1810.167.161.209/3210.167.161.209 – 10.167.161.20910.167.161.209
1910.167.161.210/3210.167.161.210 – 10.167.161.21010.167.161.210
2010.167.161.211/3210.167.161.211 – 10.167.161.21110.167.161.211
2110.167.161.212/3210.167.161.212 – 10.167.161.21210.167.161.212
2210.167.161.213/3210.167.161.213 – 10.167.161.21310.167.161.213
2310.167.161.214/3210.167.161.214 – 10.167.161.21410.167.161.214
2410.167.161.215/3210.167.161.215 – 10.167.161.21510.167.161.215
2510.167.161.216/3210.167.161.216 – 10.167.161.21610.167.161.216
2610.167.161.217/3210.167.161.217 – 10.167.161.21710.167.161.217
2710.167.161.218/3210.167.161.218 – 10.167.161.21810.167.161.218
2810.167.161.219/3210.167.161.219 – 10.167.161.21910.167.161.219
2910.167.161.220/3210.167.161.220 – 10.167.161.22010.167.161.220
3010.167.161.221/3210.167.161.221 – 10.167.161.22110.167.161.221
3110.167.161.222/3210.167.161.222 – 10.167.161.22210.167.161.222
3210.167.161.223/3210.167.161.223 – 10.167.161.22310.167.161.223
3310.167.161.224/3210.167.161.224 – 10.167.161.22410.167.161.224
3410.167.161.225/3210.167.161.225 – 10.167.161.22510.167.161.225
3510.167.161.226/3210.167.161.226 – 10.167.161.22610.167.161.226
3610.167.161.227/3210.167.161.227 – 10.167.161.22710.167.161.227
3710.167.161.228/3210.167.161.228 – 10.167.161.22810.167.161.228
3810.167.161.229/3210.167.161.229 – 10.167.161.22910.167.161.229
3910.167.161.230/3210.167.161.230 – 10.167.161.23010.167.161.230
4010.167.161.231/3210.167.161.231 – 10.167.161.23110.167.161.231
4110.167.161.232/3210.167.161.232 – 10.167.161.23210.167.161.232
4210.167.161.233/3210.167.161.233 – 10.167.161.23310.167.161.233
4310.167.161.234/3210.167.161.234 – 10.167.161.23410.167.161.234
4410.167.161.235/3210.167.161.235 – 10.167.161.23510.167.161.235
4510.167.161.236/3210.167.161.236 – 10.167.161.23610.167.161.236
4610.167.161.237/3210.167.161.237 – 10.167.161.23710.167.161.237
4710.167.161.238/3210.167.161.238 – 10.167.161.23810.167.161.238
4810.167.161.239/3210.167.161.239 – 10.167.161.23910.167.161.239
4910.167.161.240/3210.167.161.240 – 10.167.161.24010.167.161.240
5010.167.161.241/3210.167.161.241 – 10.167.161.24110.167.161.241
5110.167.161.242/3210.167.161.242 – 10.167.161.24210.167.161.242
5210.167.161.243/3210.167.161.243 – 10.167.161.24310.167.161.243
5310.167.161.244/3210.167.161.244 – 10.167.161.24410.167.161.244
5410.167.161.245/3210.167.161.245 – 10.167.161.24510.167.161.245
5510.167.161.246/3210.167.161.246 – 10.167.161.24610.167.161.246
5610.167.161.247/3210.167.161.247 – 10.167.161.24710.167.161.247
5710.167.161.248/3210.167.161.248 – 10.167.161.24810.167.161.248
5810.167.161.249/3210.167.161.249 – 10.167.161.24910.167.161.249
5910.167.161.250/3210.167.161.250 – 10.167.161.25010.167.161.250
6010.167.161.251/3210.167.161.251 – 10.167.161.25110.167.161.251
6110.167.161.252/3210.167.161.252 – 10.167.161.25210.167.161.252
6210.167.161.253/3210.167.161.253 – 10.167.161.25310.167.161.253
6310.167.161.254/3210.167.161.254 – 10.167.161.25410.167.161.254
6410.167.161.255/3210.167.161.255 – 10.167.161.25510.167.161.255
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 →