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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)10.46.149.192/26
network10.46.149.192/26
broadcast10.46.149.255
first host10.46.149.193
last host10.46.149.254
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.46.149.192/26
address00001010.00101110.10010101.11000000
subnet mask11111111.11111111.11111111.11000000
network00001010.00101110.10010101.11000000
broadcast00001010.00101110.10010101.11111111
green = network part, grey = host part
hex0x0a2e95c0
decimal170825152
reverse dns192.149.46.10.in-addr.arpa
ipv4-mapped::ffff:a2e:95c0

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.46.149.192/3210.46.149.192 – 10.46.149.19210.46.149.192
210.46.149.193/3210.46.149.193 – 10.46.149.19310.46.149.193
310.46.149.194/3210.46.149.194 – 10.46.149.19410.46.149.194
410.46.149.195/3210.46.149.195 – 10.46.149.19510.46.149.195
510.46.149.196/3210.46.149.196 – 10.46.149.19610.46.149.196
610.46.149.197/3210.46.149.197 – 10.46.149.19710.46.149.197
710.46.149.198/3210.46.149.198 – 10.46.149.19810.46.149.198
810.46.149.199/3210.46.149.199 – 10.46.149.19910.46.149.199
910.46.149.200/3210.46.149.200 – 10.46.149.20010.46.149.200
1010.46.149.201/3210.46.149.201 – 10.46.149.20110.46.149.201
1110.46.149.202/3210.46.149.202 – 10.46.149.20210.46.149.202
1210.46.149.203/3210.46.149.203 – 10.46.149.20310.46.149.203
1310.46.149.204/3210.46.149.204 – 10.46.149.20410.46.149.204
1410.46.149.205/3210.46.149.205 – 10.46.149.20510.46.149.205
1510.46.149.206/3210.46.149.206 – 10.46.149.20610.46.149.206
1610.46.149.207/3210.46.149.207 – 10.46.149.20710.46.149.207
1710.46.149.208/3210.46.149.208 – 10.46.149.20810.46.149.208
1810.46.149.209/3210.46.149.209 – 10.46.149.20910.46.149.209
1910.46.149.210/3210.46.149.210 – 10.46.149.21010.46.149.210
2010.46.149.211/3210.46.149.211 – 10.46.149.21110.46.149.211
2110.46.149.212/3210.46.149.212 – 10.46.149.21210.46.149.212
2210.46.149.213/3210.46.149.213 – 10.46.149.21310.46.149.213
2310.46.149.214/3210.46.149.214 – 10.46.149.21410.46.149.214
2410.46.149.215/3210.46.149.215 – 10.46.149.21510.46.149.215
2510.46.149.216/3210.46.149.216 – 10.46.149.21610.46.149.216
2610.46.149.217/3210.46.149.217 – 10.46.149.21710.46.149.217
2710.46.149.218/3210.46.149.218 – 10.46.149.21810.46.149.218
2810.46.149.219/3210.46.149.219 – 10.46.149.21910.46.149.219
2910.46.149.220/3210.46.149.220 – 10.46.149.22010.46.149.220
3010.46.149.221/3210.46.149.221 – 10.46.149.22110.46.149.221
3110.46.149.222/3210.46.149.222 – 10.46.149.22210.46.149.222
3210.46.149.223/3210.46.149.223 – 10.46.149.22310.46.149.223
3310.46.149.224/3210.46.149.224 – 10.46.149.22410.46.149.224
3410.46.149.225/3210.46.149.225 – 10.46.149.22510.46.149.225
3510.46.149.226/3210.46.149.226 – 10.46.149.22610.46.149.226
3610.46.149.227/3210.46.149.227 – 10.46.149.22710.46.149.227
3710.46.149.228/3210.46.149.228 – 10.46.149.22810.46.149.228
3810.46.149.229/3210.46.149.229 – 10.46.149.22910.46.149.229
3910.46.149.230/3210.46.149.230 – 10.46.149.23010.46.149.230
4010.46.149.231/3210.46.149.231 – 10.46.149.23110.46.149.231
4110.46.149.232/3210.46.149.232 – 10.46.149.23210.46.149.232
4210.46.149.233/3210.46.149.233 – 10.46.149.23310.46.149.233
4310.46.149.234/3210.46.149.234 – 10.46.149.23410.46.149.234
4410.46.149.235/3210.46.149.235 – 10.46.149.23510.46.149.235
4510.46.149.236/3210.46.149.236 – 10.46.149.23610.46.149.236
4610.46.149.237/3210.46.149.237 – 10.46.149.23710.46.149.237
4710.46.149.238/3210.46.149.238 – 10.46.149.23810.46.149.238
4810.46.149.239/3210.46.149.239 – 10.46.149.23910.46.149.239
4910.46.149.240/3210.46.149.240 – 10.46.149.24010.46.149.240
5010.46.149.241/3210.46.149.241 – 10.46.149.24110.46.149.241
5110.46.149.242/3210.46.149.242 – 10.46.149.24210.46.149.242
5210.46.149.243/3210.46.149.243 – 10.46.149.24310.46.149.243
5310.46.149.244/3210.46.149.244 – 10.46.149.24410.46.149.244
5410.46.149.245/3210.46.149.245 – 10.46.149.24510.46.149.245
5510.46.149.246/3210.46.149.246 – 10.46.149.24610.46.149.246
5610.46.149.247/3210.46.149.247 – 10.46.149.24710.46.149.247
5710.46.149.248/3210.46.149.248 – 10.46.149.24810.46.149.248
5810.46.149.249/3210.46.149.249 – 10.46.149.24910.46.149.249
5910.46.149.250/3210.46.149.250 – 10.46.149.25010.46.149.250
6010.46.149.251/3210.46.149.251 – 10.46.149.25110.46.149.251
6110.46.149.252/3210.46.149.252 – 10.46.149.25210.46.149.252
6210.46.149.253/3210.46.149.253 – 10.46.149.25310.46.149.253
6310.46.149.254/3210.46.149.254 – 10.46.149.25410.46.149.254
6410.46.149.255/3210.46.149.255 – 10.46.149.25510.46.149.255
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 →