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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)10.76.205.192/26
network10.76.205.192/26
broadcast10.76.205.255
first host10.76.205.193
last host10.76.205.254
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.76.205.192/26
address00001010.01001100.11001101.11000000
subnet mask11111111.11111111.11111111.11000000
network00001010.01001100.11001101.11000000
broadcast00001010.01001100.11001101.11111111
green = network part, grey = host part
hex0x0a4ccdc0
decimal172805568
reverse dns192.205.76.10.in-addr.arpa
ipv4-mapped::ffff:a4c:cdc0

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.76.205.192/3210.76.205.192 – 10.76.205.19210.76.205.192
210.76.205.193/3210.76.205.193 – 10.76.205.19310.76.205.193
310.76.205.194/3210.76.205.194 – 10.76.205.19410.76.205.194
410.76.205.195/3210.76.205.195 – 10.76.205.19510.76.205.195
510.76.205.196/3210.76.205.196 – 10.76.205.19610.76.205.196
610.76.205.197/3210.76.205.197 – 10.76.205.19710.76.205.197
710.76.205.198/3210.76.205.198 – 10.76.205.19810.76.205.198
810.76.205.199/3210.76.205.199 – 10.76.205.19910.76.205.199
910.76.205.200/3210.76.205.200 – 10.76.205.20010.76.205.200
1010.76.205.201/3210.76.205.201 – 10.76.205.20110.76.205.201
1110.76.205.202/3210.76.205.202 – 10.76.205.20210.76.205.202
1210.76.205.203/3210.76.205.203 – 10.76.205.20310.76.205.203
1310.76.205.204/3210.76.205.204 – 10.76.205.20410.76.205.204
1410.76.205.205/3210.76.205.205 – 10.76.205.20510.76.205.205
1510.76.205.206/3210.76.205.206 – 10.76.205.20610.76.205.206
1610.76.205.207/3210.76.205.207 – 10.76.205.20710.76.205.207
1710.76.205.208/3210.76.205.208 – 10.76.205.20810.76.205.208
1810.76.205.209/3210.76.205.209 – 10.76.205.20910.76.205.209
1910.76.205.210/3210.76.205.210 – 10.76.205.21010.76.205.210
2010.76.205.211/3210.76.205.211 – 10.76.205.21110.76.205.211
2110.76.205.212/3210.76.205.212 – 10.76.205.21210.76.205.212
2210.76.205.213/3210.76.205.213 – 10.76.205.21310.76.205.213
2310.76.205.214/3210.76.205.214 – 10.76.205.21410.76.205.214
2410.76.205.215/3210.76.205.215 – 10.76.205.21510.76.205.215
2510.76.205.216/3210.76.205.216 – 10.76.205.21610.76.205.216
2610.76.205.217/3210.76.205.217 – 10.76.205.21710.76.205.217
2710.76.205.218/3210.76.205.218 – 10.76.205.21810.76.205.218
2810.76.205.219/3210.76.205.219 – 10.76.205.21910.76.205.219
2910.76.205.220/3210.76.205.220 – 10.76.205.22010.76.205.220
3010.76.205.221/3210.76.205.221 – 10.76.205.22110.76.205.221
3110.76.205.222/3210.76.205.222 – 10.76.205.22210.76.205.222
3210.76.205.223/3210.76.205.223 – 10.76.205.22310.76.205.223
3310.76.205.224/3210.76.205.224 – 10.76.205.22410.76.205.224
3410.76.205.225/3210.76.205.225 – 10.76.205.22510.76.205.225
3510.76.205.226/3210.76.205.226 – 10.76.205.22610.76.205.226
3610.76.205.227/3210.76.205.227 – 10.76.205.22710.76.205.227
3710.76.205.228/3210.76.205.228 – 10.76.205.22810.76.205.228
3810.76.205.229/3210.76.205.229 – 10.76.205.22910.76.205.229
3910.76.205.230/3210.76.205.230 – 10.76.205.23010.76.205.230
4010.76.205.231/3210.76.205.231 – 10.76.205.23110.76.205.231
4110.76.205.232/3210.76.205.232 – 10.76.205.23210.76.205.232
4210.76.205.233/3210.76.205.233 – 10.76.205.23310.76.205.233
4310.76.205.234/3210.76.205.234 – 10.76.205.23410.76.205.234
4410.76.205.235/3210.76.205.235 – 10.76.205.23510.76.205.235
4510.76.205.236/3210.76.205.236 – 10.76.205.23610.76.205.236
4610.76.205.237/3210.76.205.237 – 10.76.205.23710.76.205.237
4710.76.205.238/3210.76.205.238 – 10.76.205.23810.76.205.238
4810.76.205.239/3210.76.205.239 – 10.76.205.23910.76.205.239
4910.76.205.240/3210.76.205.240 – 10.76.205.24010.76.205.240
5010.76.205.241/3210.76.205.241 – 10.76.205.24110.76.205.241
5110.76.205.242/3210.76.205.242 – 10.76.205.24210.76.205.242
5210.76.205.243/3210.76.205.243 – 10.76.205.24310.76.205.243
5310.76.205.244/3210.76.205.244 – 10.76.205.24410.76.205.244
5410.76.205.245/3210.76.205.245 – 10.76.205.24510.76.205.245
5510.76.205.246/3210.76.205.246 – 10.76.205.24610.76.205.246
5610.76.205.247/3210.76.205.247 – 10.76.205.24710.76.205.247
5710.76.205.248/3210.76.205.248 – 10.76.205.24810.76.205.248
5810.76.205.249/3210.76.205.249 – 10.76.205.24910.76.205.249
5910.76.205.250/3210.76.205.250 – 10.76.205.25010.76.205.250
6010.76.205.251/3210.76.205.251 – 10.76.205.25110.76.205.251
6110.76.205.252/3210.76.205.252 – 10.76.205.25210.76.205.252
6210.76.205.253/3210.76.205.253 – 10.76.205.25310.76.205.253
6310.76.205.254/3210.76.205.254 – 10.76.205.25410.76.205.254
6410.76.205.255/3210.76.205.255 – 10.76.205.25510.76.205.255
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 →