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)10.14.208.0/20
network10.14.208.0/20
broadcast10.14.223.255
first host10.14.208.1
last host10.14.223.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.14.208.0/20
address00001010.00001110.11010000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00001110.11010000.00000000
broadcast00001010.00001110.11011111.11111111
green = network part, grey = host part
hex0x0a0ed000
decimal168742912
reverse dns0.208.14.10.in-addr.arpa
ipv4-mapped::ffff:a0e:d000

/20 split into /28 · 256 subnets

close ×
#networkhost rangebroadcast
110.14.208.0/2810.14.208.1 – 10.14.208.1410.14.208.15
210.14.208.16/2810.14.208.17 – 10.14.208.3010.14.208.31
310.14.208.32/2810.14.208.33 – 10.14.208.4610.14.208.47
410.14.208.48/2810.14.208.49 – 10.14.208.6210.14.208.63
510.14.208.64/2810.14.208.65 – 10.14.208.7810.14.208.79
610.14.208.80/2810.14.208.81 – 10.14.208.9410.14.208.95
710.14.208.96/2810.14.208.97 – 10.14.208.11010.14.208.111
810.14.208.112/2810.14.208.113 – 10.14.208.12610.14.208.127
910.14.208.128/2810.14.208.129 – 10.14.208.14210.14.208.143
1010.14.208.144/2810.14.208.145 – 10.14.208.15810.14.208.159
1110.14.208.160/2810.14.208.161 – 10.14.208.17410.14.208.175
1210.14.208.176/2810.14.208.177 – 10.14.208.19010.14.208.191
1310.14.208.192/2810.14.208.193 – 10.14.208.20610.14.208.207
1410.14.208.208/2810.14.208.209 – 10.14.208.22210.14.208.223
1510.14.208.224/2810.14.208.225 – 10.14.208.23810.14.208.239
1610.14.208.240/2810.14.208.241 – 10.14.208.25410.14.208.255
1710.14.209.0/2810.14.209.1 – 10.14.209.1410.14.209.15
1810.14.209.16/2810.14.209.17 – 10.14.209.3010.14.209.31
1910.14.209.32/2810.14.209.33 – 10.14.209.4610.14.209.47
2010.14.209.48/2810.14.209.49 – 10.14.209.6210.14.209.63
2110.14.209.64/2810.14.209.65 – 10.14.209.7810.14.209.79
2210.14.209.80/2810.14.209.81 – 10.14.209.9410.14.209.95
2310.14.209.96/2810.14.209.97 – 10.14.209.11010.14.209.111
2410.14.209.112/2810.14.209.113 – 10.14.209.12610.14.209.127
2510.14.209.128/2810.14.209.129 – 10.14.209.14210.14.209.143
2610.14.209.144/2810.14.209.145 – 10.14.209.15810.14.209.159
2710.14.209.160/2810.14.209.161 – 10.14.209.17410.14.209.175
2810.14.209.176/2810.14.209.177 – 10.14.209.19010.14.209.191
2910.14.209.192/2810.14.209.193 – 10.14.209.20610.14.209.207
3010.14.209.208/2810.14.209.209 – 10.14.209.22210.14.209.223
3110.14.209.224/2810.14.209.225 – 10.14.209.23810.14.209.239
3210.14.209.240/2810.14.209.241 – 10.14.209.25410.14.209.255
3310.14.210.0/2810.14.210.1 – 10.14.210.1410.14.210.15
3410.14.210.16/2810.14.210.17 – 10.14.210.3010.14.210.31
3510.14.210.32/2810.14.210.33 – 10.14.210.4610.14.210.47
3610.14.210.48/2810.14.210.49 – 10.14.210.6210.14.210.63
3710.14.210.64/2810.14.210.65 – 10.14.210.7810.14.210.79
3810.14.210.80/2810.14.210.81 – 10.14.210.9410.14.210.95
3910.14.210.96/2810.14.210.97 – 10.14.210.11010.14.210.111
4010.14.210.112/2810.14.210.113 – 10.14.210.12610.14.210.127
4110.14.210.128/2810.14.210.129 – 10.14.210.14210.14.210.143
4210.14.210.144/2810.14.210.145 – 10.14.210.15810.14.210.159
4310.14.210.160/2810.14.210.161 – 10.14.210.17410.14.210.175
4410.14.210.176/2810.14.210.177 – 10.14.210.19010.14.210.191
4510.14.210.192/2810.14.210.193 – 10.14.210.20610.14.210.207
4610.14.210.208/2810.14.210.209 – 10.14.210.22210.14.210.223
4710.14.210.224/2810.14.210.225 – 10.14.210.23810.14.210.239
4810.14.210.240/2810.14.210.241 – 10.14.210.25410.14.210.255
4910.14.211.0/2810.14.211.1 – 10.14.211.1410.14.211.15
5010.14.211.16/2810.14.211.17 – 10.14.211.3010.14.211.31
5110.14.211.32/2810.14.211.33 – 10.14.211.4610.14.211.47
5210.14.211.48/2810.14.211.49 – 10.14.211.6210.14.211.63
5310.14.211.64/2810.14.211.65 – 10.14.211.7810.14.211.79
5410.14.211.80/2810.14.211.81 – 10.14.211.9410.14.211.95
5510.14.211.96/2810.14.211.97 – 10.14.211.11010.14.211.111
5610.14.211.112/2810.14.211.113 – 10.14.211.12610.14.211.127
5710.14.211.128/2810.14.211.129 – 10.14.211.14210.14.211.143
5810.14.211.144/2810.14.211.145 – 10.14.211.15810.14.211.159
5910.14.211.160/2810.14.211.161 – 10.14.211.17410.14.211.175
6010.14.211.176/2810.14.211.177 – 10.14.211.19010.14.211.191
6110.14.211.192/2810.14.211.193 – 10.14.211.20610.14.211.207
6210.14.211.208/2810.14.211.209 – 10.14.211.22210.14.211.223
6310.14.211.224/2810.14.211.225 – 10.14.211.23810.14.211.239
6410.14.211.240/2810.14.211.241 – 10.14.211.25410.14.211.255
6510.14.212.0/2810.14.212.1 – 10.14.212.1410.14.212.15
6610.14.212.16/2810.14.212.17 – 10.14.212.3010.14.212.31
6710.14.212.32/2810.14.212.33 – 10.14.212.4610.14.212.47
6810.14.212.48/2810.14.212.49 – 10.14.212.6210.14.212.63
6910.14.212.64/2810.14.212.65 – 10.14.212.7810.14.212.79
7010.14.212.80/2810.14.212.81 – 10.14.212.9410.14.212.95
7110.14.212.96/2810.14.212.97 – 10.14.212.11010.14.212.111
7210.14.212.112/2810.14.212.113 – 10.14.212.12610.14.212.127
7310.14.212.128/2810.14.212.129 – 10.14.212.14210.14.212.143
7410.14.212.144/2810.14.212.145 – 10.14.212.15810.14.212.159
7510.14.212.160/2810.14.212.161 – 10.14.212.17410.14.212.175
7610.14.212.176/2810.14.212.177 – 10.14.212.19010.14.212.191
7710.14.212.192/2810.14.212.193 – 10.14.212.20610.14.212.207
7810.14.212.208/2810.14.212.209 – 10.14.212.22210.14.212.223
7910.14.212.224/2810.14.212.225 – 10.14.212.23810.14.212.239
8010.14.212.240/2810.14.212.241 – 10.14.212.25410.14.212.255
8110.14.213.0/2810.14.213.1 – 10.14.213.1410.14.213.15
8210.14.213.16/2810.14.213.17 – 10.14.213.3010.14.213.31
8310.14.213.32/2810.14.213.33 – 10.14.213.4610.14.213.47
8410.14.213.48/2810.14.213.49 – 10.14.213.6210.14.213.63
8510.14.213.64/2810.14.213.65 – 10.14.213.7810.14.213.79
8610.14.213.80/2810.14.213.81 – 10.14.213.9410.14.213.95
8710.14.213.96/2810.14.213.97 – 10.14.213.11010.14.213.111
8810.14.213.112/2810.14.213.113 – 10.14.213.12610.14.213.127
8910.14.213.128/2810.14.213.129 – 10.14.213.14210.14.213.143
9010.14.213.144/2810.14.213.145 – 10.14.213.15810.14.213.159
9110.14.213.160/2810.14.213.161 – 10.14.213.17410.14.213.175
9210.14.213.176/2810.14.213.177 – 10.14.213.19010.14.213.191
9310.14.213.192/2810.14.213.193 – 10.14.213.20610.14.213.207
9410.14.213.208/2810.14.213.209 – 10.14.213.22210.14.213.223
9510.14.213.224/2810.14.213.225 – 10.14.213.23810.14.213.239
9610.14.213.240/2810.14.213.241 – 10.14.213.25410.14.213.255
9710.14.214.0/2810.14.214.1 – 10.14.214.1410.14.214.15
9810.14.214.16/2810.14.214.17 – 10.14.214.3010.14.214.31
9910.14.214.32/2810.14.214.33 – 10.14.214.4610.14.214.47
10010.14.214.48/2810.14.214.49 – 10.14.214.6210.14.214.63
10110.14.214.64/2810.14.214.65 – 10.14.214.7810.14.214.79
10210.14.214.80/2810.14.214.81 – 10.14.214.9410.14.214.95
10310.14.214.96/2810.14.214.97 – 10.14.214.11010.14.214.111
10410.14.214.112/2810.14.214.113 – 10.14.214.12610.14.214.127
10510.14.214.128/2810.14.214.129 – 10.14.214.14210.14.214.143
10610.14.214.144/2810.14.214.145 – 10.14.214.15810.14.214.159
10710.14.214.160/2810.14.214.161 – 10.14.214.17410.14.214.175
10810.14.214.176/2810.14.214.177 – 10.14.214.19010.14.214.191
10910.14.214.192/2810.14.214.193 – 10.14.214.20610.14.214.207
11010.14.214.208/2810.14.214.209 – 10.14.214.22210.14.214.223
11110.14.214.224/2810.14.214.225 – 10.14.214.23810.14.214.239
11210.14.214.240/2810.14.214.241 – 10.14.214.25410.14.214.255
11310.14.215.0/2810.14.215.1 – 10.14.215.1410.14.215.15
11410.14.215.16/2810.14.215.17 – 10.14.215.3010.14.215.31
11510.14.215.32/2810.14.215.33 – 10.14.215.4610.14.215.47
11610.14.215.48/2810.14.215.49 – 10.14.215.6210.14.215.63
11710.14.215.64/2810.14.215.65 – 10.14.215.7810.14.215.79
11810.14.215.80/2810.14.215.81 – 10.14.215.9410.14.215.95
11910.14.215.96/2810.14.215.97 – 10.14.215.11010.14.215.111
12010.14.215.112/2810.14.215.113 – 10.14.215.12610.14.215.127
12110.14.215.128/2810.14.215.129 – 10.14.215.14210.14.215.143
12210.14.215.144/2810.14.215.145 – 10.14.215.15810.14.215.159
12310.14.215.160/2810.14.215.161 – 10.14.215.17410.14.215.175
12410.14.215.176/2810.14.215.177 – 10.14.215.19010.14.215.191
12510.14.215.192/2810.14.215.193 – 10.14.215.20610.14.215.207
12610.14.215.208/2810.14.215.209 – 10.14.215.22210.14.215.223
12710.14.215.224/2810.14.215.225 – 10.14.215.23810.14.215.239
12810.14.215.240/2810.14.215.241 – 10.14.215.25410.14.215.255
12910.14.216.0/2810.14.216.1 – 10.14.216.1410.14.216.15
13010.14.216.16/2810.14.216.17 – 10.14.216.3010.14.216.31
13110.14.216.32/2810.14.216.33 – 10.14.216.4610.14.216.47
13210.14.216.48/2810.14.216.49 – 10.14.216.6210.14.216.63
13310.14.216.64/2810.14.216.65 – 10.14.216.7810.14.216.79
13410.14.216.80/2810.14.216.81 – 10.14.216.9410.14.216.95
13510.14.216.96/2810.14.216.97 – 10.14.216.11010.14.216.111
13610.14.216.112/2810.14.216.113 – 10.14.216.12610.14.216.127
13710.14.216.128/2810.14.216.129 – 10.14.216.14210.14.216.143
13810.14.216.144/2810.14.216.145 – 10.14.216.15810.14.216.159
13910.14.216.160/2810.14.216.161 – 10.14.216.17410.14.216.175
14010.14.216.176/2810.14.216.177 – 10.14.216.19010.14.216.191
14110.14.216.192/2810.14.216.193 – 10.14.216.20610.14.216.207
14210.14.216.208/2810.14.216.209 – 10.14.216.22210.14.216.223
14310.14.216.224/2810.14.216.225 – 10.14.216.23810.14.216.239
14410.14.216.240/2810.14.216.241 – 10.14.216.25410.14.216.255
14510.14.217.0/2810.14.217.1 – 10.14.217.1410.14.217.15
14610.14.217.16/2810.14.217.17 – 10.14.217.3010.14.217.31
14710.14.217.32/2810.14.217.33 – 10.14.217.4610.14.217.47
14810.14.217.48/2810.14.217.49 – 10.14.217.6210.14.217.63
14910.14.217.64/2810.14.217.65 – 10.14.217.7810.14.217.79
15010.14.217.80/2810.14.217.81 – 10.14.217.9410.14.217.95
15110.14.217.96/2810.14.217.97 – 10.14.217.11010.14.217.111
15210.14.217.112/2810.14.217.113 – 10.14.217.12610.14.217.127
15310.14.217.128/2810.14.217.129 – 10.14.217.14210.14.217.143
15410.14.217.144/2810.14.217.145 – 10.14.217.15810.14.217.159
15510.14.217.160/2810.14.217.161 – 10.14.217.17410.14.217.175
15610.14.217.176/2810.14.217.177 – 10.14.217.19010.14.217.191
15710.14.217.192/2810.14.217.193 – 10.14.217.20610.14.217.207
15810.14.217.208/2810.14.217.209 – 10.14.217.22210.14.217.223
15910.14.217.224/2810.14.217.225 – 10.14.217.23810.14.217.239
16010.14.217.240/2810.14.217.241 – 10.14.217.25410.14.217.255
16110.14.218.0/2810.14.218.1 – 10.14.218.1410.14.218.15
16210.14.218.16/2810.14.218.17 – 10.14.218.3010.14.218.31
16310.14.218.32/2810.14.218.33 – 10.14.218.4610.14.218.47
16410.14.218.48/2810.14.218.49 – 10.14.218.6210.14.218.63
16510.14.218.64/2810.14.218.65 – 10.14.218.7810.14.218.79
16610.14.218.80/2810.14.218.81 – 10.14.218.9410.14.218.95
16710.14.218.96/2810.14.218.97 – 10.14.218.11010.14.218.111
16810.14.218.112/2810.14.218.113 – 10.14.218.12610.14.218.127
16910.14.218.128/2810.14.218.129 – 10.14.218.14210.14.218.143
17010.14.218.144/2810.14.218.145 – 10.14.218.15810.14.218.159
17110.14.218.160/2810.14.218.161 – 10.14.218.17410.14.218.175
17210.14.218.176/2810.14.218.177 – 10.14.218.19010.14.218.191
17310.14.218.192/2810.14.218.193 – 10.14.218.20610.14.218.207
17410.14.218.208/2810.14.218.209 – 10.14.218.22210.14.218.223
17510.14.218.224/2810.14.218.225 – 10.14.218.23810.14.218.239
17610.14.218.240/2810.14.218.241 – 10.14.218.25410.14.218.255
17710.14.219.0/2810.14.219.1 – 10.14.219.1410.14.219.15
17810.14.219.16/2810.14.219.17 – 10.14.219.3010.14.219.31
17910.14.219.32/2810.14.219.33 – 10.14.219.4610.14.219.47
18010.14.219.48/2810.14.219.49 – 10.14.219.6210.14.219.63
18110.14.219.64/2810.14.219.65 – 10.14.219.7810.14.219.79
18210.14.219.80/2810.14.219.81 – 10.14.219.9410.14.219.95
18310.14.219.96/2810.14.219.97 – 10.14.219.11010.14.219.111
18410.14.219.112/2810.14.219.113 – 10.14.219.12610.14.219.127
18510.14.219.128/2810.14.219.129 – 10.14.219.14210.14.219.143
18610.14.219.144/2810.14.219.145 – 10.14.219.15810.14.219.159
18710.14.219.160/2810.14.219.161 – 10.14.219.17410.14.219.175
18810.14.219.176/2810.14.219.177 – 10.14.219.19010.14.219.191
18910.14.219.192/2810.14.219.193 – 10.14.219.20610.14.219.207
19010.14.219.208/2810.14.219.209 – 10.14.219.22210.14.219.223
19110.14.219.224/2810.14.219.225 – 10.14.219.23810.14.219.239
19210.14.219.240/2810.14.219.241 – 10.14.219.25410.14.219.255
19310.14.220.0/2810.14.220.1 – 10.14.220.1410.14.220.15
19410.14.220.16/2810.14.220.17 – 10.14.220.3010.14.220.31
19510.14.220.32/2810.14.220.33 – 10.14.220.4610.14.220.47
19610.14.220.48/2810.14.220.49 – 10.14.220.6210.14.220.63
19710.14.220.64/2810.14.220.65 – 10.14.220.7810.14.220.79
19810.14.220.80/2810.14.220.81 – 10.14.220.9410.14.220.95
19910.14.220.96/2810.14.220.97 – 10.14.220.11010.14.220.111
20010.14.220.112/2810.14.220.113 – 10.14.220.12610.14.220.127
20110.14.220.128/2810.14.220.129 – 10.14.220.14210.14.220.143
20210.14.220.144/2810.14.220.145 – 10.14.220.15810.14.220.159
20310.14.220.160/2810.14.220.161 – 10.14.220.17410.14.220.175
20410.14.220.176/2810.14.220.177 – 10.14.220.19010.14.220.191
20510.14.220.192/2810.14.220.193 – 10.14.220.20610.14.220.207
20610.14.220.208/2810.14.220.209 – 10.14.220.22210.14.220.223
20710.14.220.224/2810.14.220.225 – 10.14.220.23810.14.220.239
20810.14.220.240/2810.14.220.241 – 10.14.220.25410.14.220.255
20910.14.221.0/2810.14.221.1 – 10.14.221.1410.14.221.15
21010.14.221.16/2810.14.221.17 – 10.14.221.3010.14.221.31
21110.14.221.32/2810.14.221.33 – 10.14.221.4610.14.221.47
21210.14.221.48/2810.14.221.49 – 10.14.221.6210.14.221.63
21310.14.221.64/2810.14.221.65 – 10.14.221.7810.14.221.79
21410.14.221.80/2810.14.221.81 – 10.14.221.9410.14.221.95
21510.14.221.96/2810.14.221.97 – 10.14.221.11010.14.221.111
21610.14.221.112/2810.14.221.113 – 10.14.221.12610.14.221.127
21710.14.221.128/2810.14.221.129 – 10.14.221.14210.14.221.143
21810.14.221.144/2810.14.221.145 – 10.14.221.15810.14.221.159
21910.14.221.160/2810.14.221.161 – 10.14.221.17410.14.221.175
22010.14.221.176/2810.14.221.177 – 10.14.221.19010.14.221.191
22110.14.221.192/2810.14.221.193 – 10.14.221.20610.14.221.207
22210.14.221.208/2810.14.221.209 – 10.14.221.22210.14.221.223
22310.14.221.224/2810.14.221.225 – 10.14.221.23810.14.221.239
22410.14.221.240/2810.14.221.241 – 10.14.221.25410.14.221.255
22510.14.222.0/2810.14.222.1 – 10.14.222.1410.14.222.15
22610.14.222.16/2810.14.222.17 – 10.14.222.3010.14.222.31
22710.14.222.32/2810.14.222.33 – 10.14.222.4610.14.222.47
22810.14.222.48/2810.14.222.49 – 10.14.222.6210.14.222.63
22910.14.222.64/2810.14.222.65 – 10.14.222.7810.14.222.79
23010.14.222.80/2810.14.222.81 – 10.14.222.9410.14.222.95
23110.14.222.96/2810.14.222.97 – 10.14.222.11010.14.222.111
23210.14.222.112/2810.14.222.113 – 10.14.222.12610.14.222.127
23310.14.222.128/2810.14.222.129 – 10.14.222.14210.14.222.143
23410.14.222.144/2810.14.222.145 – 10.14.222.15810.14.222.159
23510.14.222.160/2810.14.222.161 – 10.14.222.17410.14.222.175
23610.14.222.176/2810.14.222.177 – 10.14.222.19010.14.222.191
23710.14.222.192/2810.14.222.193 – 10.14.222.20610.14.222.207
23810.14.222.208/2810.14.222.209 – 10.14.222.22210.14.222.223
23910.14.222.224/2810.14.222.225 – 10.14.222.23810.14.222.239
24010.14.222.240/2810.14.222.241 – 10.14.222.25410.14.222.255
24110.14.223.0/2810.14.223.1 – 10.14.223.1410.14.223.15
24210.14.223.16/2810.14.223.17 – 10.14.223.3010.14.223.31
24310.14.223.32/2810.14.223.33 – 10.14.223.4610.14.223.47
24410.14.223.48/2810.14.223.49 – 10.14.223.6210.14.223.63
24510.14.223.64/2810.14.223.65 – 10.14.223.7810.14.223.79
24610.14.223.80/2810.14.223.81 – 10.14.223.9410.14.223.95
24710.14.223.96/2810.14.223.97 – 10.14.223.11010.14.223.111
24810.14.223.112/2810.14.223.113 – 10.14.223.12610.14.223.127
24910.14.223.128/2810.14.223.129 – 10.14.223.14210.14.223.143
25010.14.223.144/2810.14.223.145 – 10.14.223.15810.14.223.159
25110.14.223.160/2810.14.223.161 – 10.14.223.17410.14.223.175
25210.14.223.176/2810.14.223.177 – 10.14.223.19010.14.223.191
25310.14.223.192/2810.14.223.193 – 10.14.223.20610.14.223.207
25410.14.223.208/2810.14.223.209 – 10.14.223.22210.14.223.223
25510.14.223.224/2810.14.223.225 – 10.14.223.23810.14.223.239
25610.14.223.240/2810.14.223.241 – 10.14.223.25410.14.223.255
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 →