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)10.45.48.0/20
network10.45.48.0/20
broadcast10.45.63.255
first host10.45.48.1
last host10.45.63.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.45.48.0/20
address00001010.00101101.00110000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00101101.00110000.00000000
broadcast00001010.00101101.00111111.11111111
green = network part, grey = host part
hex0x0a2d3000
decimal170733568
reverse dns0.48.45.10.in-addr.arpa
ipv4-mapped::ffff:a2d:3000

/20 split into /28 · 256 subnets

close ×
#networkhost rangebroadcast
110.45.48.0/2810.45.48.1 – 10.45.48.1410.45.48.15
210.45.48.16/2810.45.48.17 – 10.45.48.3010.45.48.31
310.45.48.32/2810.45.48.33 – 10.45.48.4610.45.48.47
410.45.48.48/2810.45.48.49 – 10.45.48.6210.45.48.63
510.45.48.64/2810.45.48.65 – 10.45.48.7810.45.48.79
610.45.48.80/2810.45.48.81 – 10.45.48.9410.45.48.95
710.45.48.96/2810.45.48.97 – 10.45.48.11010.45.48.111
810.45.48.112/2810.45.48.113 – 10.45.48.12610.45.48.127
910.45.48.128/2810.45.48.129 – 10.45.48.14210.45.48.143
1010.45.48.144/2810.45.48.145 – 10.45.48.15810.45.48.159
1110.45.48.160/2810.45.48.161 – 10.45.48.17410.45.48.175
1210.45.48.176/2810.45.48.177 – 10.45.48.19010.45.48.191
1310.45.48.192/2810.45.48.193 – 10.45.48.20610.45.48.207
1410.45.48.208/2810.45.48.209 – 10.45.48.22210.45.48.223
1510.45.48.224/2810.45.48.225 – 10.45.48.23810.45.48.239
1610.45.48.240/2810.45.48.241 – 10.45.48.25410.45.48.255
1710.45.49.0/2810.45.49.1 – 10.45.49.1410.45.49.15
1810.45.49.16/2810.45.49.17 – 10.45.49.3010.45.49.31
1910.45.49.32/2810.45.49.33 – 10.45.49.4610.45.49.47
2010.45.49.48/2810.45.49.49 – 10.45.49.6210.45.49.63
2110.45.49.64/2810.45.49.65 – 10.45.49.7810.45.49.79
2210.45.49.80/2810.45.49.81 – 10.45.49.9410.45.49.95
2310.45.49.96/2810.45.49.97 – 10.45.49.11010.45.49.111
2410.45.49.112/2810.45.49.113 – 10.45.49.12610.45.49.127
2510.45.49.128/2810.45.49.129 – 10.45.49.14210.45.49.143
2610.45.49.144/2810.45.49.145 – 10.45.49.15810.45.49.159
2710.45.49.160/2810.45.49.161 – 10.45.49.17410.45.49.175
2810.45.49.176/2810.45.49.177 – 10.45.49.19010.45.49.191
2910.45.49.192/2810.45.49.193 – 10.45.49.20610.45.49.207
3010.45.49.208/2810.45.49.209 – 10.45.49.22210.45.49.223
3110.45.49.224/2810.45.49.225 – 10.45.49.23810.45.49.239
3210.45.49.240/2810.45.49.241 – 10.45.49.25410.45.49.255
3310.45.50.0/2810.45.50.1 – 10.45.50.1410.45.50.15
3410.45.50.16/2810.45.50.17 – 10.45.50.3010.45.50.31
3510.45.50.32/2810.45.50.33 – 10.45.50.4610.45.50.47
3610.45.50.48/2810.45.50.49 – 10.45.50.6210.45.50.63
3710.45.50.64/2810.45.50.65 – 10.45.50.7810.45.50.79
3810.45.50.80/2810.45.50.81 – 10.45.50.9410.45.50.95
3910.45.50.96/2810.45.50.97 – 10.45.50.11010.45.50.111
4010.45.50.112/2810.45.50.113 – 10.45.50.12610.45.50.127
4110.45.50.128/2810.45.50.129 – 10.45.50.14210.45.50.143
4210.45.50.144/2810.45.50.145 – 10.45.50.15810.45.50.159
4310.45.50.160/2810.45.50.161 – 10.45.50.17410.45.50.175
4410.45.50.176/2810.45.50.177 – 10.45.50.19010.45.50.191
4510.45.50.192/2810.45.50.193 – 10.45.50.20610.45.50.207
4610.45.50.208/2810.45.50.209 – 10.45.50.22210.45.50.223
4710.45.50.224/2810.45.50.225 – 10.45.50.23810.45.50.239
4810.45.50.240/2810.45.50.241 – 10.45.50.25410.45.50.255
4910.45.51.0/2810.45.51.1 – 10.45.51.1410.45.51.15
5010.45.51.16/2810.45.51.17 – 10.45.51.3010.45.51.31
5110.45.51.32/2810.45.51.33 – 10.45.51.4610.45.51.47
5210.45.51.48/2810.45.51.49 – 10.45.51.6210.45.51.63
5310.45.51.64/2810.45.51.65 – 10.45.51.7810.45.51.79
5410.45.51.80/2810.45.51.81 – 10.45.51.9410.45.51.95
5510.45.51.96/2810.45.51.97 – 10.45.51.11010.45.51.111
5610.45.51.112/2810.45.51.113 – 10.45.51.12610.45.51.127
5710.45.51.128/2810.45.51.129 – 10.45.51.14210.45.51.143
5810.45.51.144/2810.45.51.145 – 10.45.51.15810.45.51.159
5910.45.51.160/2810.45.51.161 – 10.45.51.17410.45.51.175
6010.45.51.176/2810.45.51.177 – 10.45.51.19010.45.51.191
6110.45.51.192/2810.45.51.193 – 10.45.51.20610.45.51.207
6210.45.51.208/2810.45.51.209 – 10.45.51.22210.45.51.223
6310.45.51.224/2810.45.51.225 – 10.45.51.23810.45.51.239
6410.45.51.240/2810.45.51.241 – 10.45.51.25410.45.51.255
6510.45.52.0/2810.45.52.1 – 10.45.52.1410.45.52.15
6610.45.52.16/2810.45.52.17 – 10.45.52.3010.45.52.31
6710.45.52.32/2810.45.52.33 – 10.45.52.4610.45.52.47
6810.45.52.48/2810.45.52.49 – 10.45.52.6210.45.52.63
6910.45.52.64/2810.45.52.65 – 10.45.52.7810.45.52.79
7010.45.52.80/2810.45.52.81 – 10.45.52.9410.45.52.95
7110.45.52.96/2810.45.52.97 – 10.45.52.11010.45.52.111
7210.45.52.112/2810.45.52.113 – 10.45.52.12610.45.52.127
7310.45.52.128/2810.45.52.129 – 10.45.52.14210.45.52.143
7410.45.52.144/2810.45.52.145 – 10.45.52.15810.45.52.159
7510.45.52.160/2810.45.52.161 – 10.45.52.17410.45.52.175
7610.45.52.176/2810.45.52.177 – 10.45.52.19010.45.52.191
7710.45.52.192/2810.45.52.193 – 10.45.52.20610.45.52.207
7810.45.52.208/2810.45.52.209 – 10.45.52.22210.45.52.223
7910.45.52.224/2810.45.52.225 – 10.45.52.23810.45.52.239
8010.45.52.240/2810.45.52.241 – 10.45.52.25410.45.52.255
8110.45.53.0/2810.45.53.1 – 10.45.53.1410.45.53.15
8210.45.53.16/2810.45.53.17 – 10.45.53.3010.45.53.31
8310.45.53.32/2810.45.53.33 – 10.45.53.4610.45.53.47
8410.45.53.48/2810.45.53.49 – 10.45.53.6210.45.53.63
8510.45.53.64/2810.45.53.65 – 10.45.53.7810.45.53.79
8610.45.53.80/2810.45.53.81 – 10.45.53.9410.45.53.95
8710.45.53.96/2810.45.53.97 – 10.45.53.11010.45.53.111
8810.45.53.112/2810.45.53.113 – 10.45.53.12610.45.53.127
8910.45.53.128/2810.45.53.129 – 10.45.53.14210.45.53.143
9010.45.53.144/2810.45.53.145 – 10.45.53.15810.45.53.159
9110.45.53.160/2810.45.53.161 – 10.45.53.17410.45.53.175
9210.45.53.176/2810.45.53.177 – 10.45.53.19010.45.53.191
9310.45.53.192/2810.45.53.193 – 10.45.53.20610.45.53.207
9410.45.53.208/2810.45.53.209 – 10.45.53.22210.45.53.223
9510.45.53.224/2810.45.53.225 – 10.45.53.23810.45.53.239
9610.45.53.240/2810.45.53.241 – 10.45.53.25410.45.53.255
9710.45.54.0/2810.45.54.1 – 10.45.54.1410.45.54.15
9810.45.54.16/2810.45.54.17 – 10.45.54.3010.45.54.31
9910.45.54.32/2810.45.54.33 – 10.45.54.4610.45.54.47
10010.45.54.48/2810.45.54.49 – 10.45.54.6210.45.54.63
10110.45.54.64/2810.45.54.65 – 10.45.54.7810.45.54.79
10210.45.54.80/2810.45.54.81 – 10.45.54.9410.45.54.95
10310.45.54.96/2810.45.54.97 – 10.45.54.11010.45.54.111
10410.45.54.112/2810.45.54.113 – 10.45.54.12610.45.54.127
10510.45.54.128/2810.45.54.129 – 10.45.54.14210.45.54.143
10610.45.54.144/2810.45.54.145 – 10.45.54.15810.45.54.159
10710.45.54.160/2810.45.54.161 – 10.45.54.17410.45.54.175
10810.45.54.176/2810.45.54.177 – 10.45.54.19010.45.54.191
10910.45.54.192/2810.45.54.193 – 10.45.54.20610.45.54.207
11010.45.54.208/2810.45.54.209 – 10.45.54.22210.45.54.223
11110.45.54.224/2810.45.54.225 – 10.45.54.23810.45.54.239
11210.45.54.240/2810.45.54.241 – 10.45.54.25410.45.54.255
11310.45.55.0/2810.45.55.1 – 10.45.55.1410.45.55.15
11410.45.55.16/2810.45.55.17 – 10.45.55.3010.45.55.31
11510.45.55.32/2810.45.55.33 – 10.45.55.4610.45.55.47
11610.45.55.48/2810.45.55.49 – 10.45.55.6210.45.55.63
11710.45.55.64/2810.45.55.65 – 10.45.55.7810.45.55.79
11810.45.55.80/2810.45.55.81 – 10.45.55.9410.45.55.95
11910.45.55.96/2810.45.55.97 – 10.45.55.11010.45.55.111
12010.45.55.112/2810.45.55.113 – 10.45.55.12610.45.55.127
12110.45.55.128/2810.45.55.129 – 10.45.55.14210.45.55.143
12210.45.55.144/2810.45.55.145 – 10.45.55.15810.45.55.159
12310.45.55.160/2810.45.55.161 – 10.45.55.17410.45.55.175
12410.45.55.176/2810.45.55.177 – 10.45.55.19010.45.55.191
12510.45.55.192/2810.45.55.193 – 10.45.55.20610.45.55.207
12610.45.55.208/2810.45.55.209 – 10.45.55.22210.45.55.223
12710.45.55.224/2810.45.55.225 – 10.45.55.23810.45.55.239
12810.45.55.240/2810.45.55.241 – 10.45.55.25410.45.55.255
12910.45.56.0/2810.45.56.1 – 10.45.56.1410.45.56.15
13010.45.56.16/2810.45.56.17 – 10.45.56.3010.45.56.31
13110.45.56.32/2810.45.56.33 – 10.45.56.4610.45.56.47
13210.45.56.48/2810.45.56.49 – 10.45.56.6210.45.56.63
13310.45.56.64/2810.45.56.65 – 10.45.56.7810.45.56.79
13410.45.56.80/2810.45.56.81 – 10.45.56.9410.45.56.95
13510.45.56.96/2810.45.56.97 – 10.45.56.11010.45.56.111
13610.45.56.112/2810.45.56.113 – 10.45.56.12610.45.56.127
13710.45.56.128/2810.45.56.129 – 10.45.56.14210.45.56.143
13810.45.56.144/2810.45.56.145 – 10.45.56.15810.45.56.159
13910.45.56.160/2810.45.56.161 – 10.45.56.17410.45.56.175
14010.45.56.176/2810.45.56.177 – 10.45.56.19010.45.56.191
14110.45.56.192/2810.45.56.193 – 10.45.56.20610.45.56.207
14210.45.56.208/2810.45.56.209 – 10.45.56.22210.45.56.223
14310.45.56.224/2810.45.56.225 – 10.45.56.23810.45.56.239
14410.45.56.240/2810.45.56.241 – 10.45.56.25410.45.56.255
14510.45.57.0/2810.45.57.1 – 10.45.57.1410.45.57.15
14610.45.57.16/2810.45.57.17 – 10.45.57.3010.45.57.31
14710.45.57.32/2810.45.57.33 – 10.45.57.4610.45.57.47
14810.45.57.48/2810.45.57.49 – 10.45.57.6210.45.57.63
14910.45.57.64/2810.45.57.65 – 10.45.57.7810.45.57.79
15010.45.57.80/2810.45.57.81 – 10.45.57.9410.45.57.95
15110.45.57.96/2810.45.57.97 – 10.45.57.11010.45.57.111
15210.45.57.112/2810.45.57.113 – 10.45.57.12610.45.57.127
15310.45.57.128/2810.45.57.129 – 10.45.57.14210.45.57.143
15410.45.57.144/2810.45.57.145 – 10.45.57.15810.45.57.159
15510.45.57.160/2810.45.57.161 – 10.45.57.17410.45.57.175
15610.45.57.176/2810.45.57.177 – 10.45.57.19010.45.57.191
15710.45.57.192/2810.45.57.193 – 10.45.57.20610.45.57.207
15810.45.57.208/2810.45.57.209 – 10.45.57.22210.45.57.223
15910.45.57.224/2810.45.57.225 – 10.45.57.23810.45.57.239
16010.45.57.240/2810.45.57.241 – 10.45.57.25410.45.57.255
16110.45.58.0/2810.45.58.1 – 10.45.58.1410.45.58.15
16210.45.58.16/2810.45.58.17 – 10.45.58.3010.45.58.31
16310.45.58.32/2810.45.58.33 – 10.45.58.4610.45.58.47
16410.45.58.48/2810.45.58.49 – 10.45.58.6210.45.58.63
16510.45.58.64/2810.45.58.65 – 10.45.58.7810.45.58.79
16610.45.58.80/2810.45.58.81 – 10.45.58.9410.45.58.95
16710.45.58.96/2810.45.58.97 – 10.45.58.11010.45.58.111
16810.45.58.112/2810.45.58.113 – 10.45.58.12610.45.58.127
16910.45.58.128/2810.45.58.129 – 10.45.58.14210.45.58.143
17010.45.58.144/2810.45.58.145 – 10.45.58.15810.45.58.159
17110.45.58.160/2810.45.58.161 – 10.45.58.17410.45.58.175
17210.45.58.176/2810.45.58.177 – 10.45.58.19010.45.58.191
17310.45.58.192/2810.45.58.193 – 10.45.58.20610.45.58.207
17410.45.58.208/2810.45.58.209 – 10.45.58.22210.45.58.223
17510.45.58.224/2810.45.58.225 – 10.45.58.23810.45.58.239
17610.45.58.240/2810.45.58.241 – 10.45.58.25410.45.58.255
17710.45.59.0/2810.45.59.1 – 10.45.59.1410.45.59.15
17810.45.59.16/2810.45.59.17 – 10.45.59.3010.45.59.31
17910.45.59.32/2810.45.59.33 – 10.45.59.4610.45.59.47
18010.45.59.48/2810.45.59.49 – 10.45.59.6210.45.59.63
18110.45.59.64/2810.45.59.65 – 10.45.59.7810.45.59.79
18210.45.59.80/2810.45.59.81 – 10.45.59.9410.45.59.95
18310.45.59.96/2810.45.59.97 – 10.45.59.11010.45.59.111
18410.45.59.112/2810.45.59.113 – 10.45.59.12610.45.59.127
18510.45.59.128/2810.45.59.129 – 10.45.59.14210.45.59.143
18610.45.59.144/2810.45.59.145 – 10.45.59.15810.45.59.159
18710.45.59.160/2810.45.59.161 – 10.45.59.17410.45.59.175
18810.45.59.176/2810.45.59.177 – 10.45.59.19010.45.59.191
18910.45.59.192/2810.45.59.193 – 10.45.59.20610.45.59.207
19010.45.59.208/2810.45.59.209 – 10.45.59.22210.45.59.223
19110.45.59.224/2810.45.59.225 – 10.45.59.23810.45.59.239
19210.45.59.240/2810.45.59.241 – 10.45.59.25410.45.59.255
19310.45.60.0/2810.45.60.1 – 10.45.60.1410.45.60.15
19410.45.60.16/2810.45.60.17 – 10.45.60.3010.45.60.31
19510.45.60.32/2810.45.60.33 – 10.45.60.4610.45.60.47
19610.45.60.48/2810.45.60.49 – 10.45.60.6210.45.60.63
19710.45.60.64/2810.45.60.65 – 10.45.60.7810.45.60.79
19810.45.60.80/2810.45.60.81 – 10.45.60.9410.45.60.95
19910.45.60.96/2810.45.60.97 – 10.45.60.11010.45.60.111
20010.45.60.112/2810.45.60.113 – 10.45.60.12610.45.60.127
20110.45.60.128/2810.45.60.129 – 10.45.60.14210.45.60.143
20210.45.60.144/2810.45.60.145 – 10.45.60.15810.45.60.159
20310.45.60.160/2810.45.60.161 – 10.45.60.17410.45.60.175
20410.45.60.176/2810.45.60.177 – 10.45.60.19010.45.60.191
20510.45.60.192/2810.45.60.193 – 10.45.60.20610.45.60.207
20610.45.60.208/2810.45.60.209 – 10.45.60.22210.45.60.223
20710.45.60.224/2810.45.60.225 – 10.45.60.23810.45.60.239
20810.45.60.240/2810.45.60.241 – 10.45.60.25410.45.60.255
20910.45.61.0/2810.45.61.1 – 10.45.61.1410.45.61.15
21010.45.61.16/2810.45.61.17 – 10.45.61.3010.45.61.31
21110.45.61.32/2810.45.61.33 – 10.45.61.4610.45.61.47
21210.45.61.48/2810.45.61.49 – 10.45.61.6210.45.61.63
21310.45.61.64/2810.45.61.65 – 10.45.61.7810.45.61.79
21410.45.61.80/2810.45.61.81 – 10.45.61.9410.45.61.95
21510.45.61.96/2810.45.61.97 – 10.45.61.11010.45.61.111
21610.45.61.112/2810.45.61.113 – 10.45.61.12610.45.61.127
21710.45.61.128/2810.45.61.129 – 10.45.61.14210.45.61.143
21810.45.61.144/2810.45.61.145 – 10.45.61.15810.45.61.159
21910.45.61.160/2810.45.61.161 – 10.45.61.17410.45.61.175
22010.45.61.176/2810.45.61.177 – 10.45.61.19010.45.61.191
22110.45.61.192/2810.45.61.193 – 10.45.61.20610.45.61.207
22210.45.61.208/2810.45.61.209 – 10.45.61.22210.45.61.223
22310.45.61.224/2810.45.61.225 – 10.45.61.23810.45.61.239
22410.45.61.240/2810.45.61.241 – 10.45.61.25410.45.61.255
22510.45.62.0/2810.45.62.1 – 10.45.62.1410.45.62.15
22610.45.62.16/2810.45.62.17 – 10.45.62.3010.45.62.31
22710.45.62.32/2810.45.62.33 – 10.45.62.4610.45.62.47
22810.45.62.48/2810.45.62.49 – 10.45.62.6210.45.62.63
22910.45.62.64/2810.45.62.65 – 10.45.62.7810.45.62.79
23010.45.62.80/2810.45.62.81 – 10.45.62.9410.45.62.95
23110.45.62.96/2810.45.62.97 – 10.45.62.11010.45.62.111
23210.45.62.112/2810.45.62.113 – 10.45.62.12610.45.62.127
23310.45.62.128/2810.45.62.129 – 10.45.62.14210.45.62.143
23410.45.62.144/2810.45.62.145 – 10.45.62.15810.45.62.159
23510.45.62.160/2810.45.62.161 – 10.45.62.17410.45.62.175
23610.45.62.176/2810.45.62.177 – 10.45.62.19010.45.62.191
23710.45.62.192/2810.45.62.193 – 10.45.62.20610.45.62.207
23810.45.62.208/2810.45.62.209 – 10.45.62.22210.45.62.223
23910.45.62.224/2810.45.62.225 – 10.45.62.23810.45.62.239
24010.45.62.240/2810.45.62.241 – 10.45.62.25410.45.62.255
24110.45.63.0/2810.45.63.1 – 10.45.63.1410.45.63.15
24210.45.63.16/2810.45.63.17 – 10.45.63.3010.45.63.31
24310.45.63.32/2810.45.63.33 – 10.45.63.4610.45.63.47
24410.45.63.48/2810.45.63.49 – 10.45.63.6210.45.63.63
24510.45.63.64/2810.45.63.65 – 10.45.63.7810.45.63.79
24610.45.63.80/2810.45.63.81 – 10.45.63.9410.45.63.95
24710.45.63.96/2810.45.63.97 – 10.45.63.11010.45.63.111
24810.45.63.112/2810.45.63.113 – 10.45.63.12610.45.63.127
24910.45.63.128/2810.45.63.129 – 10.45.63.14210.45.63.143
25010.45.63.144/2810.45.63.145 – 10.45.63.15810.45.63.159
25110.45.63.160/2810.45.63.161 – 10.45.63.17410.45.63.175
25210.45.63.176/2810.45.63.177 – 10.45.63.19010.45.63.191
25310.45.63.192/2810.45.63.193 – 10.45.63.20610.45.63.207
25410.45.63.208/2810.45.63.209 – 10.45.63.22210.45.63.223
25510.45.63.224/2810.45.63.225 – 10.45.63.23810.45.63.239
25610.45.63.240/2810.45.63.241 – 10.45.63.25410.45.63.255
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 →