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)10.14.144.0/20
network10.14.144.0/20
broadcast10.14.159.255
first host10.14.144.1
last host10.14.159.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.14.144.0/20
address00001010.00001110.10010000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00001110.10010000.00000000
broadcast00001010.00001110.10011111.11111111
green = network part, grey = host part
hex0x0a0e9000
decimal168726528
reverse dns0.144.14.10.in-addr.arpa
ipv4-mapped::ffff:a0e:9000

/20 split into /28 · 256 subnets

close ×
#networkhost rangebroadcast
110.14.144.0/2810.14.144.1 – 10.14.144.1410.14.144.15
210.14.144.16/2810.14.144.17 – 10.14.144.3010.14.144.31
310.14.144.32/2810.14.144.33 – 10.14.144.4610.14.144.47
410.14.144.48/2810.14.144.49 – 10.14.144.6210.14.144.63
510.14.144.64/2810.14.144.65 – 10.14.144.7810.14.144.79
610.14.144.80/2810.14.144.81 – 10.14.144.9410.14.144.95
710.14.144.96/2810.14.144.97 – 10.14.144.11010.14.144.111
810.14.144.112/2810.14.144.113 – 10.14.144.12610.14.144.127
910.14.144.128/2810.14.144.129 – 10.14.144.14210.14.144.143
1010.14.144.144/2810.14.144.145 – 10.14.144.15810.14.144.159
1110.14.144.160/2810.14.144.161 – 10.14.144.17410.14.144.175
1210.14.144.176/2810.14.144.177 – 10.14.144.19010.14.144.191
1310.14.144.192/2810.14.144.193 – 10.14.144.20610.14.144.207
1410.14.144.208/2810.14.144.209 – 10.14.144.22210.14.144.223
1510.14.144.224/2810.14.144.225 – 10.14.144.23810.14.144.239
1610.14.144.240/2810.14.144.241 – 10.14.144.25410.14.144.255
1710.14.145.0/2810.14.145.1 – 10.14.145.1410.14.145.15
1810.14.145.16/2810.14.145.17 – 10.14.145.3010.14.145.31
1910.14.145.32/2810.14.145.33 – 10.14.145.4610.14.145.47
2010.14.145.48/2810.14.145.49 – 10.14.145.6210.14.145.63
2110.14.145.64/2810.14.145.65 – 10.14.145.7810.14.145.79
2210.14.145.80/2810.14.145.81 – 10.14.145.9410.14.145.95
2310.14.145.96/2810.14.145.97 – 10.14.145.11010.14.145.111
2410.14.145.112/2810.14.145.113 – 10.14.145.12610.14.145.127
2510.14.145.128/2810.14.145.129 – 10.14.145.14210.14.145.143
2610.14.145.144/2810.14.145.145 – 10.14.145.15810.14.145.159
2710.14.145.160/2810.14.145.161 – 10.14.145.17410.14.145.175
2810.14.145.176/2810.14.145.177 – 10.14.145.19010.14.145.191
2910.14.145.192/2810.14.145.193 – 10.14.145.20610.14.145.207
3010.14.145.208/2810.14.145.209 – 10.14.145.22210.14.145.223
3110.14.145.224/2810.14.145.225 – 10.14.145.23810.14.145.239
3210.14.145.240/2810.14.145.241 – 10.14.145.25410.14.145.255
3310.14.146.0/2810.14.146.1 – 10.14.146.1410.14.146.15
3410.14.146.16/2810.14.146.17 – 10.14.146.3010.14.146.31
3510.14.146.32/2810.14.146.33 – 10.14.146.4610.14.146.47
3610.14.146.48/2810.14.146.49 – 10.14.146.6210.14.146.63
3710.14.146.64/2810.14.146.65 – 10.14.146.7810.14.146.79
3810.14.146.80/2810.14.146.81 – 10.14.146.9410.14.146.95
3910.14.146.96/2810.14.146.97 – 10.14.146.11010.14.146.111
4010.14.146.112/2810.14.146.113 – 10.14.146.12610.14.146.127
4110.14.146.128/2810.14.146.129 – 10.14.146.14210.14.146.143
4210.14.146.144/2810.14.146.145 – 10.14.146.15810.14.146.159
4310.14.146.160/2810.14.146.161 – 10.14.146.17410.14.146.175
4410.14.146.176/2810.14.146.177 – 10.14.146.19010.14.146.191
4510.14.146.192/2810.14.146.193 – 10.14.146.20610.14.146.207
4610.14.146.208/2810.14.146.209 – 10.14.146.22210.14.146.223
4710.14.146.224/2810.14.146.225 – 10.14.146.23810.14.146.239
4810.14.146.240/2810.14.146.241 – 10.14.146.25410.14.146.255
4910.14.147.0/2810.14.147.1 – 10.14.147.1410.14.147.15
5010.14.147.16/2810.14.147.17 – 10.14.147.3010.14.147.31
5110.14.147.32/2810.14.147.33 – 10.14.147.4610.14.147.47
5210.14.147.48/2810.14.147.49 – 10.14.147.6210.14.147.63
5310.14.147.64/2810.14.147.65 – 10.14.147.7810.14.147.79
5410.14.147.80/2810.14.147.81 – 10.14.147.9410.14.147.95
5510.14.147.96/2810.14.147.97 – 10.14.147.11010.14.147.111
5610.14.147.112/2810.14.147.113 – 10.14.147.12610.14.147.127
5710.14.147.128/2810.14.147.129 – 10.14.147.14210.14.147.143
5810.14.147.144/2810.14.147.145 – 10.14.147.15810.14.147.159
5910.14.147.160/2810.14.147.161 – 10.14.147.17410.14.147.175
6010.14.147.176/2810.14.147.177 – 10.14.147.19010.14.147.191
6110.14.147.192/2810.14.147.193 – 10.14.147.20610.14.147.207
6210.14.147.208/2810.14.147.209 – 10.14.147.22210.14.147.223
6310.14.147.224/2810.14.147.225 – 10.14.147.23810.14.147.239
6410.14.147.240/2810.14.147.241 – 10.14.147.25410.14.147.255
6510.14.148.0/2810.14.148.1 – 10.14.148.1410.14.148.15
6610.14.148.16/2810.14.148.17 – 10.14.148.3010.14.148.31
6710.14.148.32/2810.14.148.33 – 10.14.148.4610.14.148.47
6810.14.148.48/2810.14.148.49 – 10.14.148.6210.14.148.63
6910.14.148.64/2810.14.148.65 – 10.14.148.7810.14.148.79
7010.14.148.80/2810.14.148.81 – 10.14.148.9410.14.148.95
7110.14.148.96/2810.14.148.97 – 10.14.148.11010.14.148.111
7210.14.148.112/2810.14.148.113 – 10.14.148.12610.14.148.127
7310.14.148.128/2810.14.148.129 – 10.14.148.14210.14.148.143
7410.14.148.144/2810.14.148.145 – 10.14.148.15810.14.148.159
7510.14.148.160/2810.14.148.161 – 10.14.148.17410.14.148.175
7610.14.148.176/2810.14.148.177 – 10.14.148.19010.14.148.191
7710.14.148.192/2810.14.148.193 – 10.14.148.20610.14.148.207
7810.14.148.208/2810.14.148.209 – 10.14.148.22210.14.148.223
7910.14.148.224/2810.14.148.225 – 10.14.148.23810.14.148.239
8010.14.148.240/2810.14.148.241 – 10.14.148.25410.14.148.255
8110.14.149.0/2810.14.149.1 – 10.14.149.1410.14.149.15
8210.14.149.16/2810.14.149.17 – 10.14.149.3010.14.149.31
8310.14.149.32/2810.14.149.33 – 10.14.149.4610.14.149.47
8410.14.149.48/2810.14.149.49 – 10.14.149.6210.14.149.63
8510.14.149.64/2810.14.149.65 – 10.14.149.7810.14.149.79
8610.14.149.80/2810.14.149.81 – 10.14.149.9410.14.149.95
8710.14.149.96/2810.14.149.97 – 10.14.149.11010.14.149.111
8810.14.149.112/2810.14.149.113 – 10.14.149.12610.14.149.127
8910.14.149.128/2810.14.149.129 – 10.14.149.14210.14.149.143
9010.14.149.144/2810.14.149.145 – 10.14.149.15810.14.149.159
9110.14.149.160/2810.14.149.161 – 10.14.149.17410.14.149.175
9210.14.149.176/2810.14.149.177 – 10.14.149.19010.14.149.191
9310.14.149.192/2810.14.149.193 – 10.14.149.20610.14.149.207
9410.14.149.208/2810.14.149.209 – 10.14.149.22210.14.149.223
9510.14.149.224/2810.14.149.225 – 10.14.149.23810.14.149.239
9610.14.149.240/2810.14.149.241 – 10.14.149.25410.14.149.255
9710.14.150.0/2810.14.150.1 – 10.14.150.1410.14.150.15
9810.14.150.16/2810.14.150.17 – 10.14.150.3010.14.150.31
9910.14.150.32/2810.14.150.33 – 10.14.150.4610.14.150.47
10010.14.150.48/2810.14.150.49 – 10.14.150.6210.14.150.63
10110.14.150.64/2810.14.150.65 – 10.14.150.7810.14.150.79
10210.14.150.80/2810.14.150.81 – 10.14.150.9410.14.150.95
10310.14.150.96/2810.14.150.97 – 10.14.150.11010.14.150.111
10410.14.150.112/2810.14.150.113 – 10.14.150.12610.14.150.127
10510.14.150.128/2810.14.150.129 – 10.14.150.14210.14.150.143
10610.14.150.144/2810.14.150.145 – 10.14.150.15810.14.150.159
10710.14.150.160/2810.14.150.161 – 10.14.150.17410.14.150.175
10810.14.150.176/2810.14.150.177 – 10.14.150.19010.14.150.191
10910.14.150.192/2810.14.150.193 – 10.14.150.20610.14.150.207
11010.14.150.208/2810.14.150.209 – 10.14.150.22210.14.150.223
11110.14.150.224/2810.14.150.225 – 10.14.150.23810.14.150.239
11210.14.150.240/2810.14.150.241 – 10.14.150.25410.14.150.255
11310.14.151.0/2810.14.151.1 – 10.14.151.1410.14.151.15
11410.14.151.16/2810.14.151.17 – 10.14.151.3010.14.151.31
11510.14.151.32/2810.14.151.33 – 10.14.151.4610.14.151.47
11610.14.151.48/2810.14.151.49 – 10.14.151.6210.14.151.63
11710.14.151.64/2810.14.151.65 – 10.14.151.7810.14.151.79
11810.14.151.80/2810.14.151.81 – 10.14.151.9410.14.151.95
11910.14.151.96/2810.14.151.97 – 10.14.151.11010.14.151.111
12010.14.151.112/2810.14.151.113 – 10.14.151.12610.14.151.127
12110.14.151.128/2810.14.151.129 – 10.14.151.14210.14.151.143
12210.14.151.144/2810.14.151.145 – 10.14.151.15810.14.151.159
12310.14.151.160/2810.14.151.161 – 10.14.151.17410.14.151.175
12410.14.151.176/2810.14.151.177 – 10.14.151.19010.14.151.191
12510.14.151.192/2810.14.151.193 – 10.14.151.20610.14.151.207
12610.14.151.208/2810.14.151.209 – 10.14.151.22210.14.151.223
12710.14.151.224/2810.14.151.225 – 10.14.151.23810.14.151.239
12810.14.151.240/2810.14.151.241 – 10.14.151.25410.14.151.255
12910.14.152.0/2810.14.152.1 – 10.14.152.1410.14.152.15
13010.14.152.16/2810.14.152.17 – 10.14.152.3010.14.152.31
13110.14.152.32/2810.14.152.33 – 10.14.152.4610.14.152.47
13210.14.152.48/2810.14.152.49 – 10.14.152.6210.14.152.63
13310.14.152.64/2810.14.152.65 – 10.14.152.7810.14.152.79
13410.14.152.80/2810.14.152.81 – 10.14.152.9410.14.152.95
13510.14.152.96/2810.14.152.97 – 10.14.152.11010.14.152.111
13610.14.152.112/2810.14.152.113 – 10.14.152.12610.14.152.127
13710.14.152.128/2810.14.152.129 – 10.14.152.14210.14.152.143
13810.14.152.144/2810.14.152.145 – 10.14.152.15810.14.152.159
13910.14.152.160/2810.14.152.161 – 10.14.152.17410.14.152.175
14010.14.152.176/2810.14.152.177 – 10.14.152.19010.14.152.191
14110.14.152.192/2810.14.152.193 – 10.14.152.20610.14.152.207
14210.14.152.208/2810.14.152.209 – 10.14.152.22210.14.152.223
14310.14.152.224/2810.14.152.225 – 10.14.152.23810.14.152.239
14410.14.152.240/2810.14.152.241 – 10.14.152.25410.14.152.255
14510.14.153.0/2810.14.153.1 – 10.14.153.1410.14.153.15
14610.14.153.16/2810.14.153.17 – 10.14.153.3010.14.153.31
14710.14.153.32/2810.14.153.33 – 10.14.153.4610.14.153.47
14810.14.153.48/2810.14.153.49 – 10.14.153.6210.14.153.63
14910.14.153.64/2810.14.153.65 – 10.14.153.7810.14.153.79
15010.14.153.80/2810.14.153.81 – 10.14.153.9410.14.153.95
15110.14.153.96/2810.14.153.97 – 10.14.153.11010.14.153.111
15210.14.153.112/2810.14.153.113 – 10.14.153.12610.14.153.127
15310.14.153.128/2810.14.153.129 – 10.14.153.14210.14.153.143
15410.14.153.144/2810.14.153.145 – 10.14.153.15810.14.153.159
15510.14.153.160/2810.14.153.161 – 10.14.153.17410.14.153.175
15610.14.153.176/2810.14.153.177 – 10.14.153.19010.14.153.191
15710.14.153.192/2810.14.153.193 – 10.14.153.20610.14.153.207
15810.14.153.208/2810.14.153.209 – 10.14.153.22210.14.153.223
15910.14.153.224/2810.14.153.225 – 10.14.153.23810.14.153.239
16010.14.153.240/2810.14.153.241 – 10.14.153.25410.14.153.255
16110.14.154.0/2810.14.154.1 – 10.14.154.1410.14.154.15
16210.14.154.16/2810.14.154.17 – 10.14.154.3010.14.154.31
16310.14.154.32/2810.14.154.33 – 10.14.154.4610.14.154.47
16410.14.154.48/2810.14.154.49 – 10.14.154.6210.14.154.63
16510.14.154.64/2810.14.154.65 – 10.14.154.7810.14.154.79
16610.14.154.80/2810.14.154.81 – 10.14.154.9410.14.154.95
16710.14.154.96/2810.14.154.97 – 10.14.154.11010.14.154.111
16810.14.154.112/2810.14.154.113 – 10.14.154.12610.14.154.127
16910.14.154.128/2810.14.154.129 – 10.14.154.14210.14.154.143
17010.14.154.144/2810.14.154.145 – 10.14.154.15810.14.154.159
17110.14.154.160/2810.14.154.161 – 10.14.154.17410.14.154.175
17210.14.154.176/2810.14.154.177 – 10.14.154.19010.14.154.191
17310.14.154.192/2810.14.154.193 – 10.14.154.20610.14.154.207
17410.14.154.208/2810.14.154.209 – 10.14.154.22210.14.154.223
17510.14.154.224/2810.14.154.225 – 10.14.154.23810.14.154.239
17610.14.154.240/2810.14.154.241 – 10.14.154.25410.14.154.255
17710.14.155.0/2810.14.155.1 – 10.14.155.1410.14.155.15
17810.14.155.16/2810.14.155.17 – 10.14.155.3010.14.155.31
17910.14.155.32/2810.14.155.33 – 10.14.155.4610.14.155.47
18010.14.155.48/2810.14.155.49 – 10.14.155.6210.14.155.63
18110.14.155.64/2810.14.155.65 – 10.14.155.7810.14.155.79
18210.14.155.80/2810.14.155.81 – 10.14.155.9410.14.155.95
18310.14.155.96/2810.14.155.97 – 10.14.155.11010.14.155.111
18410.14.155.112/2810.14.155.113 – 10.14.155.12610.14.155.127
18510.14.155.128/2810.14.155.129 – 10.14.155.14210.14.155.143
18610.14.155.144/2810.14.155.145 – 10.14.155.15810.14.155.159
18710.14.155.160/2810.14.155.161 – 10.14.155.17410.14.155.175
18810.14.155.176/2810.14.155.177 – 10.14.155.19010.14.155.191
18910.14.155.192/2810.14.155.193 – 10.14.155.20610.14.155.207
19010.14.155.208/2810.14.155.209 – 10.14.155.22210.14.155.223
19110.14.155.224/2810.14.155.225 – 10.14.155.23810.14.155.239
19210.14.155.240/2810.14.155.241 – 10.14.155.25410.14.155.255
19310.14.156.0/2810.14.156.1 – 10.14.156.1410.14.156.15
19410.14.156.16/2810.14.156.17 – 10.14.156.3010.14.156.31
19510.14.156.32/2810.14.156.33 – 10.14.156.4610.14.156.47
19610.14.156.48/2810.14.156.49 – 10.14.156.6210.14.156.63
19710.14.156.64/2810.14.156.65 – 10.14.156.7810.14.156.79
19810.14.156.80/2810.14.156.81 – 10.14.156.9410.14.156.95
19910.14.156.96/2810.14.156.97 – 10.14.156.11010.14.156.111
20010.14.156.112/2810.14.156.113 – 10.14.156.12610.14.156.127
20110.14.156.128/2810.14.156.129 – 10.14.156.14210.14.156.143
20210.14.156.144/2810.14.156.145 – 10.14.156.15810.14.156.159
20310.14.156.160/2810.14.156.161 – 10.14.156.17410.14.156.175
20410.14.156.176/2810.14.156.177 – 10.14.156.19010.14.156.191
20510.14.156.192/2810.14.156.193 – 10.14.156.20610.14.156.207
20610.14.156.208/2810.14.156.209 – 10.14.156.22210.14.156.223
20710.14.156.224/2810.14.156.225 – 10.14.156.23810.14.156.239
20810.14.156.240/2810.14.156.241 – 10.14.156.25410.14.156.255
20910.14.157.0/2810.14.157.1 – 10.14.157.1410.14.157.15
21010.14.157.16/2810.14.157.17 – 10.14.157.3010.14.157.31
21110.14.157.32/2810.14.157.33 – 10.14.157.4610.14.157.47
21210.14.157.48/2810.14.157.49 – 10.14.157.6210.14.157.63
21310.14.157.64/2810.14.157.65 – 10.14.157.7810.14.157.79
21410.14.157.80/2810.14.157.81 – 10.14.157.9410.14.157.95
21510.14.157.96/2810.14.157.97 – 10.14.157.11010.14.157.111
21610.14.157.112/2810.14.157.113 – 10.14.157.12610.14.157.127
21710.14.157.128/2810.14.157.129 – 10.14.157.14210.14.157.143
21810.14.157.144/2810.14.157.145 – 10.14.157.15810.14.157.159
21910.14.157.160/2810.14.157.161 – 10.14.157.17410.14.157.175
22010.14.157.176/2810.14.157.177 – 10.14.157.19010.14.157.191
22110.14.157.192/2810.14.157.193 – 10.14.157.20610.14.157.207
22210.14.157.208/2810.14.157.209 – 10.14.157.22210.14.157.223
22310.14.157.224/2810.14.157.225 – 10.14.157.23810.14.157.239
22410.14.157.240/2810.14.157.241 – 10.14.157.25410.14.157.255
22510.14.158.0/2810.14.158.1 – 10.14.158.1410.14.158.15
22610.14.158.16/2810.14.158.17 – 10.14.158.3010.14.158.31
22710.14.158.32/2810.14.158.33 – 10.14.158.4610.14.158.47
22810.14.158.48/2810.14.158.49 – 10.14.158.6210.14.158.63
22910.14.158.64/2810.14.158.65 – 10.14.158.7810.14.158.79
23010.14.158.80/2810.14.158.81 – 10.14.158.9410.14.158.95
23110.14.158.96/2810.14.158.97 – 10.14.158.11010.14.158.111
23210.14.158.112/2810.14.158.113 – 10.14.158.12610.14.158.127
23310.14.158.128/2810.14.158.129 – 10.14.158.14210.14.158.143
23410.14.158.144/2810.14.158.145 – 10.14.158.15810.14.158.159
23510.14.158.160/2810.14.158.161 – 10.14.158.17410.14.158.175
23610.14.158.176/2810.14.158.177 – 10.14.158.19010.14.158.191
23710.14.158.192/2810.14.158.193 – 10.14.158.20610.14.158.207
23810.14.158.208/2810.14.158.209 – 10.14.158.22210.14.158.223
23910.14.158.224/2810.14.158.225 – 10.14.158.23810.14.158.239
24010.14.158.240/2810.14.158.241 – 10.14.158.25410.14.158.255
24110.14.159.0/2810.14.159.1 – 10.14.159.1410.14.159.15
24210.14.159.16/2810.14.159.17 – 10.14.159.3010.14.159.31
24310.14.159.32/2810.14.159.33 – 10.14.159.4610.14.159.47
24410.14.159.48/2810.14.159.49 – 10.14.159.6210.14.159.63
24510.14.159.64/2810.14.159.65 – 10.14.159.7810.14.159.79
24610.14.159.80/2810.14.159.81 – 10.14.159.9410.14.159.95
24710.14.159.96/2810.14.159.97 – 10.14.159.11010.14.159.111
24810.14.159.112/2810.14.159.113 – 10.14.159.12610.14.159.127
24910.14.159.128/2810.14.159.129 – 10.14.159.14210.14.159.143
25010.14.159.144/2810.14.159.145 – 10.14.159.15810.14.159.159
25110.14.159.160/2810.14.159.161 – 10.14.159.17410.14.159.175
25210.14.159.176/2810.14.159.177 – 10.14.159.19010.14.159.191
25310.14.159.192/2810.14.159.193 – 10.14.159.20610.14.159.207
25410.14.159.208/2810.14.159.209 – 10.14.159.22210.14.159.223
25510.14.159.224/2810.14.159.225 – 10.14.159.23810.14.159.239
25610.14.159.240/2810.14.159.241 – 10.14.159.25410.14.159.255
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 →