ip
ipku.in

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
private IP (RFC 1918)10.13.240.0/20
network10.13.240.0/20
broadcast10.13.255.255
first host10.13.240.1
last host10.13.255.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.13.240.0/20
address00001010.00001101.11110000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00001101.11110000.00000000
broadcast00001010.00001101.11111111.11111111
green = network part, grey = host part
hex0x0a0df000
decimal168685568
reverse dns0.240.13.10.in-addr.arpa
ipv4-mapped::ffff:a0d:f000

/20 split into /28 · 256 subnets

close ×
#networkhost rangebroadcast
110.13.240.0/2810.13.240.1 – 10.13.240.1410.13.240.15
210.13.240.16/2810.13.240.17 – 10.13.240.3010.13.240.31
310.13.240.32/2810.13.240.33 – 10.13.240.4610.13.240.47
410.13.240.48/2810.13.240.49 – 10.13.240.6210.13.240.63
510.13.240.64/2810.13.240.65 – 10.13.240.7810.13.240.79
610.13.240.80/2810.13.240.81 – 10.13.240.9410.13.240.95
710.13.240.96/2810.13.240.97 – 10.13.240.11010.13.240.111
810.13.240.112/2810.13.240.113 – 10.13.240.12610.13.240.127
910.13.240.128/2810.13.240.129 – 10.13.240.14210.13.240.143
1010.13.240.144/2810.13.240.145 – 10.13.240.15810.13.240.159
1110.13.240.160/2810.13.240.161 – 10.13.240.17410.13.240.175
1210.13.240.176/2810.13.240.177 – 10.13.240.19010.13.240.191
1310.13.240.192/2810.13.240.193 – 10.13.240.20610.13.240.207
1410.13.240.208/2810.13.240.209 – 10.13.240.22210.13.240.223
1510.13.240.224/2810.13.240.225 – 10.13.240.23810.13.240.239
1610.13.240.240/2810.13.240.241 – 10.13.240.25410.13.240.255
1710.13.241.0/2810.13.241.1 – 10.13.241.1410.13.241.15
1810.13.241.16/2810.13.241.17 – 10.13.241.3010.13.241.31
1910.13.241.32/2810.13.241.33 – 10.13.241.4610.13.241.47
2010.13.241.48/2810.13.241.49 – 10.13.241.6210.13.241.63
2110.13.241.64/2810.13.241.65 – 10.13.241.7810.13.241.79
2210.13.241.80/2810.13.241.81 – 10.13.241.9410.13.241.95
2310.13.241.96/2810.13.241.97 – 10.13.241.11010.13.241.111
2410.13.241.112/2810.13.241.113 – 10.13.241.12610.13.241.127
2510.13.241.128/2810.13.241.129 – 10.13.241.14210.13.241.143
2610.13.241.144/2810.13.241.145 – 10.13.241.15810.13.241.159
2710.13.241.160/2810.13.241.161 – 10.13.241.17410.13.241.175
2810.13.241.176/2810.13.241.177 – 10.13.241.19010.13.241.191
2910.13.241.192/2810.13.241.193 – 10.13.241.20610.13.241.207
3010.13.241.208/2810.13.241.209 – 10.13.241.22210.13.241.223
3110.13.241.224/2810.13.241.225 – 10.13.241.23810.13.241.239
3210.13.241.240/2810.13.241.241 – 10.13.241.25410.13.241.255
3310.13.242.0/2810.13.242.1 – 10.13.242.1410.13.242.15
3410.13.242.16/2810.13.242.17 – 10.13.242.3010.13.242.31
3510.13.242.32/2810.13.242.33 – 10.13.242.4610.13.242.47
3610.13.242.48/2810.13.242.49 – 10.13.242.6210.13.242.63
3710.13.242.64/2810.13.242.65 – 10.13.242.7810.13.242.79
3810.13.242.80/2810.13.242.81 – 10.13.242.9410.13.242.95
3910.13.242.96/2810.13.242.97 – 10.13.242.11010.13.242.111
4010.13.242.112/2810.13.242.113 – 10.13.242.12610.13.242.127
4110.13.242.128/2810.13.242.129 – 10.13.242.14210.13.242.143
4210.13.242.144/2810.13.242.145 – 10.13.242.15810.13.242.159
4310.13.242.160/2810.13.242.161 – 10.13.242.17410.13.242.175
4410.13.242.176/2810.13.242.177 – 10.13.242.19010.13.242.191
4510.13.242.192/2810.13.242.193 – 10.13.242.20610.13.242.207
4610.13.242.208/2810.13.242.209 – 10.13.242.22210.13.242.223
4710.13.242.224/2810.13.242.225 – 10.13.242.23810.13.242.239
4810.13.242.240/2810.13.242.241 – 10.13.242.25410.13.242.255
4910.13.243.0/2810.13.243.1 – 10.13.243.1410.13.243.15
5010.13.243.16/2810.13.243.17 – 10.13.243.3010.13.243.31
5110.13.243.32/2810.13.243.33 – 10.13.243.4610.13.243.47
5210.13.243.48/2810.13.243.49 – 10.13.243.6210.13.243.63
5310.13.243.64/2810.13.243.65 – 10.13.243.7810.13.243.79
5410.13.243.80/2810.13.243.81 – 10.13.243.9410.13.243.95
5510.13.243.96/2810.13.243.97 – 10.13.243.11010.13.243.111
5610.13.243.112/2810.13.243.113 – 10.13.243.12610.13.243.127
5710.13.243.128/2810.13.243.129 – 10.13.243.14210.13.243.143
5810.13.243.144/2810.13.243.145 – 10.13.243.15810.13.243.159
5910.13.243.160/2810.13.243.161 – 10.13.243.17410.13.243.175
6010.13.243.176/2810.13.243.177 – 10.13.243.19010.13.243.191
6110.13.243.192/2810.13.243.193 – 10.13.243.20610.13.243.207
6210.13.243.208/2810.13.243.209 – 10.13.243.22210.13.243.223
6310.13.243.224/2810.13.243.225 – 10.13.243.23810.13.243.239
6410.13.243.240/2810.13.243.241 – 10.13.243.25410.13.243.255
6510.13.244.0/2810.13.244.1 – 10.13.244.1410.13.244.15
6610.13.244.16/2810.13.244.17 – 10.13.244.3010.13.244.31
6710.13.244.32/2810.13.244.33 – 10.13.244.4610.13.244.47
6810.13.244.48/2810.13.244.49 – 10.13.244.6210.13.244.63
6910.13.244.64/2810.13.244.65 – 10.13.244.7810.13.244.79
7010.13.244.80/2810.13.244.81 – 10.13.244.9410.13.244.95
7110.13.244.96/2810.13.244.97 – 10.13.244.11010.13.244.111
7210.13.244.112/2810.13.244.113 – 10.13.244.12610.13.244.127
7310.13.244.128/2810.13.244.129 – 10.13.244.14210.13.244.143
7410.13.244.144/2810.13.244.145 – 10.13.244.15810.13.244.159
7510.13.244.160/2810.13.244.161 – 10.13.244.17410.13.244.175
7610.13.244.176/2810.13.244.177 – 10.13.244.19010.13.244.191
7710.13.244.192/2810.13.244.193 – 10.13.244.20610.13.244.207
7810.13.244.208/2810.13.244.209 – 10.13.244.22210.13.244.223
7910.13.244.224/2810.13.244.225 – 10.13.244.23810.13.244.239
8010.13.244.240/2810.13.244.241 – 10.13.244.25410.13.244.255
8110.13.245.0/2810.13.245.1 – 10.13.245.1410.13.245.15
8210.13.245.16/2810.13.245.17 – 10.13.245.3010.13.245.31
8310.13.245.32/2810.13.245.33 – 10.13.245.4610.13.245.47
8410.13.245.48/2810.13.245.49 – 10.13.245.6210.13.245.63
8510.13.245.64/2810.13.245.65 – 10.13.245.7810.13.245.79
8610.13.245.80/2810.13.245.81 – 10.13.245.9410.13.245.95
8710.13.245.96/2810.13.245.97 – 10.13.245.11010.13.245.111
8810.13.245.112/2810.13.245.113 – 10.13.245.12610.13.245.127
8910.13.245.128/2810.13.245.129 – 10.13.245.14210.13.245.143
9010.13.245.144/2810.13.245.145 – 10.13.245.15810.13.245.159
9110.13.245.160/2810.13.245.161 – 10.13.245.17410.13.245.175
9210.13.245.176/2810.13.245.177 – 10.13.245.19010.13.245.191
9310.13.245.192/2810.13.245.193 – 10.13.245.20610.13.245.207
9410.13.245.208/2810.13.245.209 – 10.13.245.22210.13.245.223
9510.13.245.224/2810.13.245.225 – 10.13.245.23810.13.245.239
9610.13.245.240/2810.13.245.241 – 10.13.245.25410.13.245.255
9710.13.246.0/2810.13.246.1 – 10.13.246.1410.13.246.15
9810.13.246.16/2810.13.246.17 – 10.13.246.3010.13.246.31
9910.13.246.32/2810.13.246.33 – 10.13.246.4610.13.246.47
10010.13.246.48/2810.13.246.49 – 10.13.246.6210.13.246.63
10110.13.246.64/2810.13.246.65 – 10.13.246.7810.13.246.79
10210.13.246.80/2810.13.246.81 – 10.13.246.9410.13.246.95
10310.13.246.96/2810.13.246.97 – 10.13.246.11010.13.246.111
10410.13.246.112/2810.13.246.113 – 10.13.246.12610.13.246.127
10510.13.246.128/2810.13.246.129 – 10.13.246.14210.13.246.143
10610.13.246.144/2810.13.246.145 – 10.13.246.15810.13.246.159
10710.13.246.160/2810.13.246.161 – 10.13.246.17410.13.246.175
10810.13.246.176/2810.13.246.177 – 10.13.246.19010.13.246.191
10910.13.246.192/2810.13.246.193 – 10.13.246.20610.13.246.207
11010.13.246.208/2810.13.246.209 – 10.13.246.22210.13.246.223
11110.13.246.224/2810.13.246.225 – 10.13.246.23810.13.246.239
11210.13.246.240/2810.13.246.241 – 10.13.246.25410.13.246.255
11310.13.247.0/2810.13.247.1 – 10.13.247.1410.13.247.15
11410.13.247.16/2810.13.247.17 – 10.13.247.3010.13.247.31
11510.13.247.32/2810.13.247.33 – 10.13.247.4610.13.247.47
11610.13.247.48/2810.13.247.49 – 10.13.247.6210.13.247.63
11710.13.247.64/2810.13.247.65 – 10.13.247.7810.13.247.79
11810.13.247.80/2810.13.247.81 – 10.13.247.9410.13.247.95
11910.13.247.96/2810.13.247.97 – 10.13.247.11010.13.247.111
12010.13.247.112/2810.13.247.113 – 10.13.247.12610.13.247.127
12110.13.247.128/2810.13.247.129 – 10.13.247.14210.13.247.143
12210.13.247.144/2810.13.247.145 – 10.13.247.15810.13.247.159
12310.13.247.160/2810.13.247.161 – 10.13.247.17410.13.247.175
12410.13.247.176/2810.13.247.177 – 10.13.247.19010.13.247.191
12510.13.247.192/2810.13.247.193 – 10.13.247.20610.13.247.207
12610.13.247.208/2810.13.247.209 – 10.13.247.22210.13.247.223
12710.13.247.224/2810.13.247.225 – 10.13.247.23810.13.247.239
12810.13.247.240/2810.13.247.241 – 10.13.247.25410.13.247.255
12910.13.248.0/2810.13.248.1 – 10.13.248.1410.13.248.15
13010.13.248.16/2810.13.248.17 – 10.13.248.3010.13.248.31
13110.13.248.32/2810.13.248.33 – 10.13.248.4610.13.248.47
13210.13.248.48/2810.13.248.49 – 10.13.248.6210.13.248.63
13310.13.248.64/2810.13.248.65 – 10.13.248.7810.13.248.79
13410.13.248.80/2810.13.248.81 – 10.13.248.9410.13.248.95
13510.13.248.96/2810.13.248.97 – 10.13.248.11010.13.248.111
13610.13.248.112/2810.13.248.113 – 10.13.248.12610.13.248.127
13710.13.248.128/2810.13.248.129 – 10.13.248.14210.13.248.143
13810.13.248.144/2810.13.248.145 – 10.13.248.15810.13.248.159
13910.13.248.160/2810.13.248.161 – 10.13.248.17410.13.248.175
14010.13.248.176/2810.13.248.177 – 10.13.248.19010.13.248.191
14110.13.248.192/2810.13.248.193 – 10.13.248.20610.13.248.207
14210.13.248.208/2810.13.248.209 – 10.13.248.22210.13.248.223
14310.13.248.224/2810.13.248.225 – 10.13.248.23810.13.248.239
14410.13.248.240/2810.13.248.241 – 10.13.248.25410.13.248.255
14510.13.249.0/2810.13.249.1 – 10.13.249.1410.13.249.15
14610.13.249.16/2810.13.249.17 – 10.13.249.3010.13.249.31
14710.13.249.32/2810.13.249.33 – 10.13.249.4610.13.249.47
14810.13.249.48/2810.13.249.49 – 10.13.249.6210.13.249.63
14910.13.249.64/2810.13.249.65 – 10.13.249.7810.13.249.79
15010.13.249.80/2810.13.249.81 – 10.13.249.9410.13.249.95
15110.13.249.96/2810.13.249.97 – 10.13.249.11010.13.249.111
15210.13.249.112/2810.13.249.113 – 10.13.249.12610.13.249.127
15310.13.249.128/2810.13.249.129 – 10.13.249.14210.13.249.143
15410.13.249.144/2810.13.249.145 – 10.13.249.15810.13.249.159
15510.13.249.160/2810.13.249.161 – 10.13.249.17410.13.249.175
15610.13.249.176/2810.13.249.177 – 10.13.249.19010.13.249.191
15710.13.249.192/2810.13.249.193 – 10.13.249.20610.13.249.207
15810.13.249.208/2810.13.249.209 – 10.13.249.22210.13.249.223
15910.13.249.224/2810.13.249.225 – 10.13.249.23810.13.249.239
16010.13.249.240/2810.13.249.241 – 10.13.249.25410.13.249.255
16110.13.250.0/2810.13.250.1 – 10.13.250.1410.13.250.15
16210.13.250.16/2810.13.250.17 – 10.13.250.3010.13.250.31
16310.13.250.32/2810.13.250.33 – 10.13.250.4610.13.250.47
16410.13.250.48/2810.13.250.49 – 10.13.250.6210.13.250.63
16510.13.250.64/2810.13.250.65 – 10.13.250.7810.13.250.79
16610.13.250.80/2810.13.250.81 – 10.13.250.9410.13.250.95
16710.13.250.96/2810.13.250.97 – 10.13.250.11010.13.250.111
16810.13.250.112/2810.13.250.113 – 10.13.250.12610.13.250.127
16910.13.250.128/2810.13.250.129 – 10.13.250.14210.13.250.143
17010.13.250.144/2810.13.250.145 – 10.13.250.15810.13.250.159
17110.13.250.160/2810.13.250.161 – 10.13.250.17410.13.250.175
17210.13.250.176/2810.13.250.177 – 10.13.250.19010.13.250.191
17310.13.250.192/2810.13.250.193 – 10.13.250.20610.13.250.207
17410.13.250.208/2810.13.250.209 – 10.13.250.22210.13.250.223
17510.13.250.224/2810.13.250.225 – 10.13.250.23810.13.250.239
17610.13.250.240/2810.13.250.241 – 10.13.250.25410.13.250.255
17710.13.251.0/2810.13.251.1 – 10.13.251.1410.13.251.15
17810.13.251.16/2810.13.251.17 – 10.13.251.3010.13.251.31
17910.13.251.32/2810.13.251.33 – 10.13.251.4610.13.251.47
18010.13.251.48/2810.13.251.49 – 10.13.251.6210.13.251.63
18110.13.251.64/2810.13.251.65 – 10.13.251.7810.13.251.79
18210.13.251.80/2810.13.251.81 – 10.13.251.9410.13.251.95
18310.13.251.96/2810.13.251.97 – 10.13.251.11010.13.251.111
18410.13.251.112/2810.13.251.113 – 10.13.251.12610.13.251.127
18510.13.251.128/2810.13.251.129 – 10.13.251.14210.13.251.143
18610.13.251.144/2810.13.251.145 – 10.13.251.15810.13.251.159
18710.13.251.160/2810.13.251.161 – 10.13.251.17410.13.251.175
18810.13.251.176/2810.13.251.177 – 10.13.251.19010.13.251.191
18910.13.251.192/2810.13.251.193 – 10.13.251.20610.13.251.207
19010.13.251.208/2810.13.251.209 – 10.13.251.22210.13.251.223
19110.13.251.224/2810.13.251.225 – 10.13.251.23810.13.251.239
19210.13.251.240/2810.13.251.241 – 10.13.251.25410.13.251.255
19310.13.252.0/2810.13.252.1 – 10.13.252.1410.13.252.15
19410.13.252.16/2810.13.252.17 – 10.13.252.3010.13.252.31
19510.13.252.32/2810.13.252.33 – 10.13.252.4610.13.252.47
19610.13.252.48/2810.13.252.49 – 10.13.252.6210.13.252.63
19710.13.252.64/2810.13.252.65 – 10.13.252.7810.13.252.79
19810.13.252.80/2810.13.252.81 – 10.13.252.9410.13.252.95
19910.13.252.96/2810.13.252.97 – 10.13.252.11010.13.252.111
20010.13.252.112/2810.13.252.113 – 10.13.252.12610.13.252.127
20110.13.252.128/2810.13.252.129 – 10.13.252.14210.13.252.143
20210.13.252.144/2810.13.252.145 – 10.13.252.15810.13.252.159
20310.13.252.160/2810.13.252.161 – 10.13.252.17410.13.252.175
20410.13.252.176/2810.13.252.177 – 10.13.252.19010.13.252.191
20510.13.252.192/2810.13.252.193 – 10.13.252.20610.13.252.207
20610.13.252.208/2810.13.252.209 – 10.13.252.22210.13.252.223
20710.13.252.224/2810.13.252.225 – 10.13.252.23810.13.252.239
20810.13.252.240/2810.13.252.241 – 10.13.252.25410.13.252.255
20910.13.253.0/2810.13.253.1 – 10.13.253.1410.13.253.15
21010.13.253.16/2810.13.253.17 – 10.13.253.3010.13.253.31
21110.13.253.32/2810.13.253.33 – 10.13.253.4610.13.253.47
21210.13.253.48/2810.13.253.49 – 10.13.253.6210.13.253.63
21310.13.253.64/2810.13.253.65 – 10.13.253.7810.13.253.79
21410.13.253.80/2810.13.253.81 – 10.13.253.9410.13.253.95
21510.13.253.96/2810.13.253.97 – 10.13.253.11010.13.253.111
21610.13.253.112/2810.13.253.113 – 10.13.253.12610.13.253.127
21710.13.253.128/2810.13.253.129 – 10.13.253.14210.13.253.143
21810.13.253.144/2810.13.253.145 – 10.13.253.15810.13.253.159
21910.13.253.160/2810.13.253.161 – 10.13.253.17410.13.253.175
22010.13.253.176/2810.13.253.177 – 10.13.253.19010.13.253.191
22110.13.253.192/2810.13.253.193 – 10.13.253.20610.13.253.207
22210.13.253.208/2810.13.253.209 – 10.13.253.22210.13.253.223
22310.13.253.224/2810.13.253.225 – 10.13.253.23810.13.253.239
22410.13.253.240/2810.13.253.241 – 10.13.253.25410.13.253.255
22510.13.254.0/2810.13.254.1 – 10.13.254.1410.13.254.15
22610.13.254.16/2810.13.254.17 – 10.13.254.3010.13.254.31
22710.13.254.32/2810.13.254.33 – 10.13.254.4610.13.254.47
22810.13.254.48/2810.13.254.49 – 10.13.254.6210.13.254.63
22910.13.254.64/2810.13.254.65 – 10.13.254.7810.13.254.79
23010.13.254.80/2810.13.254.81 – 10.13.254.9410.13.254.95
23110.13.254.96/2810.13.254.97 – 10.13.254.11010.13.254.111
23210.13.254.112/2810.13.254.113 – 10.13.254.12610.13.254.127
23310.13.254.128/2810.13.254.129 – 10.13.254.14210.13.254.143
23410.13.254.144/2810.13.254.145 – 10.13.254.15810.13.254.159
23510.13.254.160/2810.13.254.161 – 10.13.254.17410.13.254.175
23610.13.254.176/2810.13.254.177 – 10.13.254.19010.13.254.191
23710.13.254.192/2810.13.254.193 – 10.13.254.20610.13.254.207
23810.13.254.208/2810.13.254.209 – 10.13.254.22210.13.254.223
23910.13.254.224/2810.13.254.225 – 10.13.254.23810.13.254.239
24010.13.254.240/2810.13.254.241 – 10.13.254.25410.13.254.255
24110.13.255.0/2810.13.255.1 – 10.13.255.1410.13.255.15
24210.13.255.16/2810.13.255.17 – 10.13.255.3010.13.255.31
24310.13.255.32/2810.13.255.33 – 10.13.255.4610.13.255.47
24410.13.255.48/2810.13.255.49 – 10.13.255.6210.13.255.63
24510.13.255.64/2810.13.255.65 – 10.13.255.7810.13.255.79
24610.13.255.80/2810.13.255.81 – 10.13.255.9410.13.255.95
24710.13.255.96/2810.13.255.97 – 10.13.255.11010.13.255.111
24810.13.255.112/2810.13.255.113 – 10.13.255.12610.13.255.127
24910.13.255.128/2810.13.255.129 – 10.13.255.14210.13.255.143
25010.13.255.144/2810.13.255.145 – 10.13.255.15810.13.255.159
25110.13.255.160/2810.13.255.161 – 10.13.255.17410.13.255.175
25210.13.255.176/2810.13.255.177 – 10.13.255.19010.13.255.191
25310.13.255.192/2810.13.255.193 – 10.13.255.20610.13.255.207
25410.13.255.208/2810.13.255.209 – 10.13.255.22210.13.255.223
25510.13.255.224/2810.13.255.225 – 10.13.255.23810.13.255.239
25610.13.255.240/2810.13.255.241 – 10.13.255.25410.13.255.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /20
/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-
/20255.255.240.04,0964,0941
/21255.255.248.02,0482,0462 split →
/22255.255.252.01,0241,0224 split →
/23255.255.254.05125108 split →
/24255.255.255.025625416 split →
/25255.255.255.12812812632 split →
/26255.255.255.192646264 split →
/27255.255.255.2243230128 split →
/28255.255.255.2401614256 split →
/29255.255.255.24886512 split →
/30255.255.255.252421,024 split →
/31255.255.255.254222,048 split →
/32255.255.255.255114,096 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 →