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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)10.0.7.192/26
network10.0.7.192/26
broadcast10.0.7.255
first host10.0.7.193
last host10.0.7.254
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.0.7.192/26
address00001010.00000000.00000111.11000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00000000.00000111.11000000
broadcast00001010.00000000.00000111.11111111
green = network part, grey = host part
hex0x0a0007c0
decimal167774144
reverse dns192.7.0.10.in-addr.arpa
ipv4-mapped::ffff:a00:7c0

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.0.7.192/3210.0.7.192 – 10.0.7.19210.0.7.192
210.0.7.193/3210.0.7.193 – 10.0.7.19310.0.7.193
310.0.7.194/3210.0.7.194 – 10.0.7.19410.0.7.194
410.0.7.195/3210.0.7.195 – 10.0.7.19510.0.7.195
510.0.7.196/3210.0.7.196 – 10.0.7.19610.0.7.196
610.0.7.197/3210.0.7.197 – 10.0.7.19710.0.7.197
710.0.7.198/3210.0.7.198 – 10.0.7.19810.0.7.198
810.0.7.199/3210.0.7.199 – 10.0.7.19910.0.7.199
910.0.7.200/3210.0.7.200 – 10.0.7.20010.0.7.200
1010.0.7.201/3210.0.7.201 – 10.0.7.20110.0.7.201
1110.0.7.202/3210.0.7.202 – 10.0.7.20210.0.7.202
1210.0.7.203/3210.0.7.203 – 10.0.7.20310.0.7.203
1310.0.7.204/3210.0.7.204 – 10.0.7.20410.0.7.204
1410.0.7.205/3210.0.7.205 – 10.0.7.20510.0.7.205
1510.0.7.206/3210.0.7.206 – 10.0.7.20610.0.7.206
1610.0.7.207/3210.0.7.207 – 10.0.7.20710.0.7.207
1710.0.7.208/3210.0.7.208 – 10.0.7.20810.0.7.208
1810.0.7.209/3210.0.7.209 – 10.0.7.20910.0.7.209
1910.0.7.210/3210.0.7.210 – 10.0.7.21010.0.7.210
2010.0.7.211/3210.0.7.211 – 10.0.7.21110.0.7.211
2110.0.7.212/3210.0.7.212 – 10.0.7.21210.0.7.212
2210.0.7.213/3210.0.7.213 – 10.0.7.21310.0.7.213
2310.0.7.214/3210.0.7.214 – 10.0.7.21410.0.7.214
2410.0.7.215/3210.0.7.215 – 10.0.7.21510.0.7.215
2510.0.7.216/3210.0.7.216 – 10.0.7.21610.0.7.216
2610.0.7.217/3210.0.7.217 – 10.0.7.21710.0.7.217
2710.0.7.218/3210.0.7.218 – 10.0.7.21810.0.7.218
2810.0.7.219/3210.0.7.219 – 10.0.7.21910.0.7.219
2910.0.7.220/3210.0.7.220 – 10.0.7.22010.0.7.220
3010.0.7.221/3210.0.7.221 – 10.0.7.22110.0.7.221
3110.0.7.222/3210.0.7.222 – 10.0.7.22210.0.7.222
3210.0.7.223/3210.0.7.223 – 10.0.7.22310.0.7.223
3310.0.7.224/3210.0.7.224 – 10.0.7.22410.0.7.224
3410.0.7.225/3210.0.7.225 – 10.0.7.22510.0.7.225
3510.0.7.226/3210.0.7.226 – 10.0.7.22610.0.7.226
3610.0.7.227/3210.0.7.227 – 10.0.7.22710.0.7.227
3710.0.7.228/3210.0.7.228 – 10.0.7.22810.0.7.228
3810.0.7.229/3210.0.7.229 – 10.0.7.22910.0.7.229
3910.0.7.230/3210.0.7.230 – 10.0.7.23010.0.7.230
4010.0.7.231/3210.0.7.231 – 10.0.7.23110.0.7.231
4110.0.7.232/3210.0.7.232 – 10.0.7.23210.0.7.232
4210.0.7.233/3210.0.7.233 – 10.0.7.23310.0.7.233
4310.0.7.234/3210.0.7.234 – 10.0.7.23410.0.7.234
4410.0.7.235/3210.0.7.235 – 10.0.7.23510.0.7.235
4510.0.7.236/3210.0.7.236 – 10.0.7.23610.0.7.236
4610.0.7.237/3210.0.7.237 – 10.0.7.23710.0.7.237
4710.0.7.238/3210.0.7.238 – 10.0.7.23810.0.7.238
4810.0.7.239/3210.0.7.239 – 10.0.7.23910.0.7.239
4910.0.7.240/3210.0.7.240 – 10.0.7.24010.0.7.240
5010.0.7.241/3210.0.7.241 – 10.0.7.24110.0.7.241
5110.0.7.242/3210.0.7.242 – 10.0.7.24210.0.7.242
5210.0.7.243/3210.0.7.243 – 10.0.7.24310.0.7.243
5310.0.7.244/3210.0.7.244 – 10.0.7.24410.0.7.244
5410.0.7.245/3210.0.7.245 – 10.0.7.24510.0.7.245
5510.0.7.246/3210.0.7.246 – 10.0.7.24610.0.7.246
5610.0.7.247/3210.0.7.247 – 10.0.7.24710.0.7.247
5710.0.7.248/3210.0.7.248 – 10.0.7.24810.0.7.248
5810.0.7.249/3210.0.7.249 – 10.0.7.24910.0.7.249
5910.0.7.250/3210.0.7.250 – 10.0.7.25010.0.7.250
6010.0.7.251/3210.0.7.251 – 10.0.7.25110.0.7.251
6110.0.7.252/3210.0.7.252 – 10.0.7.25210.0.7.252
6210.0.7.253/3210.0.7.253 – 10.0.7.25310.0.7.253
6310.0.7.254/3210.0.7.254 – 10.0.7.25410.0.7.254
6410.0.7.255/3210.0.7.255 – 10.0.7.25510.0.7.255
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 →