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)10.13.144.0/20
network10.13.144.0/20
broadcast10.13.159.255
first host10.13.144.1
last host10.13.159.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.13.144.0/20
address00001010.00001101.10010000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00001101.10010000.00000000
broadcast00001010.00001101.10011111.11111111
green = network part, grey = host part
hex0x0a0d9000
decimal168660992
reverse dns0.144.13.10.in-addr.arpa
ipv4-mapped::ffff:a0d:9000

/20 split into /28 · 256 subnets

close ×
#networkhost rangebroadcast
110.13.144.0/2810.13.144.1 – 10.13.144.1410.13.144.15
210.13.144.16/2810.13.144.17 – 10.13.144.3010.13.144.31
310.13.144.32/2810.13.144.33 – 10.13.144.4610.13.144.47
410.13.144.48/2810.13.144.49 – 10.13.144.6210.13.144.63
510.13.144.64/2810.13.144.65 – 10.13.144.7810.13.144.79
610.13.144.80/2810.13.144.81 – 10.13.144.9410.13.144.95
710.13.144.96/2810.13.144.97 – 10.13.144.11010.13.144.111
810.13.144.112/2810.13.144.113 – 10.13.144.12610.13.144.127
910.13.144.128/2810.13.144.129 – 10.13.144.14210.13.144.143
1010.13.144.144/2810.13.144.145 – 10.13.144.15810.13.144.159
1110.13.144.160/2810.13.144.161 – 10.13.144.17410.13.144.175
1210.13.144.176/2810.13.144.177 – 10.13.144.19010.13.144.191
1310.13.144.192/2810.13.144.193 – 10.13.144.20610.13.144.207
1410.13.144.208/2810.13.144.209 – 10.13.144.22210.13.144.223
1510.13.144.224/2810.13.144.225 – 10.13.144.23810.13.144.239
1610.13.144.240/2810.13.144.241 – 10.13.144.25410.13.144.255
1710.13.145.0/2810.13.145.1 – 10.13.145.1410.13.145.15
1810.13.145.16/2810.13.145.17 – 10.13.145.3010.13.145.31
1910.13.145.32/2810.13.145.33 – 10.13.145.4610.13.145.47
2010.13.145.48/2810.13.145.49 – 10.13.145.6210.13.145.63
2110.13.145.64/2810.13.145.65 – 10.13.145.7810.13.145.79
2210.13.145.80/2810.13.145.81 – 10.13.145.9410.13.145.95
2310.13.145.96/2810.13.145.97 – 10.13.145.11010.13.145.111
2410.13.145.112/2810.13.145.113 – 10.13.145.12610.13.145.127
2510.13.145.128/2810.13.145.129 – 10.13.145.14210.13.145.143
2610.13.145.144/2810.13.145.145 – 10.13.145.15810.13.145.159
2710.13.145.160/2810.13.145.161 – 10.13.145.17410.13.145.175
2810.13.145.176/2810.13.145.177 – 10.13.145.19010.13.145.191
2910.13.145.192/2810.13.145.193 – 10.13.145.20610.13.145.207
3010.13.145.208/2810.13.145.209 – 10.13.145.22210.13.145.223
3110.13.145.224/2810.13.145.225 – 10.13.145.23810.13.145.239
3210.13.145.240/2810.13.145.241 – 10.13.145.25410.13.145.255
3310.13.146.0/2810.13.146.1 – 10.13.146.1410.13.146.15
3410.13.146.16/2810.13.146.17 – 10.13.146.3010.13.146.31
3510.13.146.32/2810.13.146.33 – 10.13.146.4610.13.146.47
3610.13.146.48/2810.13.146.49 – 10.13.146.6210.13.146.63
3710.13.146.64/2810.13.146.65 – 10.13.146.7810.13.146.79
3810.13.146.80/2810.13.146.81 – 10.13.146.9410.13.146.95
3910.13.146.96/2810.13.146.97 – 10.13.146.11010.13.146.111
4010.13.146.112/2810.13.146.113 – 10.13.146.12610.13.146.127
4110.13.146.128/2810.13.146.129 – 10.13.146.14210.13.146.143
4210.13.146.144/2810.13.146.145 – 10.13.146.15810.13.146.159
4310.13.146.160/2810.13.146.161 – 10.13.146.17410.13.146.175
4410.13.146.176/2810.13.146.177 – 10.13.146.19010.13.146.191
4510.13.146.192/2810.13.146.193 – 10.13.146.20610.13.146.207
4610.13.146.208/2810.13.146.209 – 10.13.146.22210.13.146.223
4710.13.146.224/2810.13.146.225 – 10.13.146.23810.13.146.239
4810.13.146.240/2810.13.146.241 – 10.13.146.25410.13.146.255
4910.13.147.0/2810.13.147.1 – 10.13.147.1410.13.147.15
5010.13.147.16/2810.13.147.17 – 10.13.147.3010.13.147.31
5110.13.147.32/2810.13.147.33 – 10.13.147.4610.13.147.47
5210.13.147.48/2810.13.147.49 – 10.13.147.6210.13.147.63
5310.13.147.64/2810.13.147.65 – 10.13.147.7810.13.147.79
5410.13.147.80/2810.13.147.81 – 10.13.147.9410.13.147.95
5510.13.147.96/2810.13.147.97 – 10.13.147.11010.13.147.111
5610.13.147.112/2810.13.147.113 – 10.13.147.12610.13.147.127
5710.13.147.128/2810.13.147.129 – 10.13.147.14210.13.147.143
5810.13.147.144/2810.13.147.145 – 10.13.147.15810.13.147.159
5910.13.147.160/2810.13.147.161 – 10.13.147.17410.13.147.175
6010.13.147.176/2810.13.147.177 – 10.13.147.19010.13.147.191
6110.13.147.192/2810.13.147.193 – 10.13.147.20610.13.147.207
6210.13.147.208/2810.13.147.209 – 10.13.147.22210.13.147.223
6310.13.147.224/2810.13.147.225 – 10.13.147.23810.13.147.239
6410.13.147.240/2810.13.147.241 – 10.13.147.25410.13.147.255
6510.13.148.0/2810.13.148.1 – 10.13.148.1410.13.148.15
6610.13.148.16/2810.13.148.17 – 10.13.148.3010.13.148.31
6710.13.148.32/2810.13.148.33 – 10.13.148.4610.13.148.47
6810.13.148.48/2810.13.148.49 – 10.13.148.6210.13.148.63
6910.13.148.64/2810.13.148.65 – 10.13.148.7810.13.148.79
7010.13.148.80/2810.13.148.81 – 10.13.148.9410.13.148.95
7110.13.148.96/2810.13.148.97 – 10.13.148.11010.13.148.111
7210.13.148.112/2810.13.148.113 – 10.13.148.12610.13.148.127
7310.13.148.128/2810.13.148.129 – 10.13.148.14210.13.148.143
7410.13.148.144/2810.13.148.145 – 10.13.148.15810.13.148.159
7510.13.148.160/2810.13.148.161 – 10.13.148.17410.13.148.175
7610.13.148.176/2810.13.148.177 – 10.13.148.19010.13.148.191
7710.13.148.192/2810.13.148.193 – 10.13.148.20610.13.148.207
7810.13.148.208/2810.13.148.209 – 10.13.148.22210.13.148.223
7910.13.148.224/2810.13.148.225 – 10.13.148.23810.13.148.239
8010.13.148.240/2810.13.148.241 – 10.13.148.25410.13.148.255
8110.13.149.0/2810.13.149.1 – 10.13.149.1410.13.149.15
8210.13.149.16/2810.13.149.17 – 10.13.149.3010.13.149.31
8310.13.149.32/2810.13.149.33 – 10.13.149.4610.13.149.47
8410.13.149.48/2810.13.149.49 – 10.13.149.6210.13.149.63
8510.13.149.64/2810.13.149.65 – 10.13.149.7810.13.149.79
8610.13.149.80/2810.13.149.81 – 10.13.149.9410.13.149.95
8710.13.149.96/2810.13.149.97 – 10.13.149.11010.13.149.111
8810.13.149.112/2810.13.149.113 – 10.13.149.12610.13.149.127
8910.13.149.128/2810.13.149.129 – 10.13.149.14210.13.149.143
9010.13.149.144/2810.13.149.145 – 10.13.149.15810.13.149.159
9110.13.149.160/2810.13.149.161 – 10.13.149.17410.13.149.175
9210.13.149.176/2810.13.149.177 – 10.13.149.19010.13.149.191
9310.13.149.192/2810.13.149.193 – 10.13.149.20610.13.149.207
9410.13.149.208/2810.13.149.209 – 10.13.149.22210.13.149.223
9510.13.149.224/2810.13.149.225 – 10.13.149.23810.13.149.239
9610.13.149.240/2810.13.149.241 – 10.13.149.25410.13.149.255
9710.13.150.0/2810.13.150.1 – 10.13.150.1410.13.150.15
9810.13.150.16/2810.13.150.17 – 10.13.150.3010.13.150.31
9910.13.150.32/2810.13.150.33 – 10.13.150.4610.13.150.47
10010.13.150.48/2810.13.150.49 – 10.13.150.6210.13.150.63
10110.13.150.64/2810.13.150.65 – 10.13.150.7810.13.150.79
10210.13.150.80/2810.13.150.81 – 10.13.150.9410.13.150.95
10310.13.150.96/2810.13.150.97 – 10.13.150.11010.13.150.111
10410.13.150.112/2810.13.150.113 – 10.13.150.12610.13.150.127
10510.13.150.128/2810.13.150.129 – 10.13.150.14210.13.150.143
10610.13.150.144/2810.13.150.145 – 10.13.150.15810.13.150.159
10710.13.150.160/2810.13.150.161 – 10.13.150.17410.13.150.175
10810.13.150.176/2810.13.150.177 – 10.13.150.19010.13.150.191
10910.13.150.192/2810.13.150.193 – 10.13.150.20610.13.150.207
11010.13.150.208/2810.13.150.209 – 10.13.150.22210.13.150.223
11110.13.150.224/2810.13.150.225 – 10.13.150.23810.13.150.239
11210.13.150.240/2810.13.150.241 – 10.13.150.25410.13.150.255
11310.13.151.0/2810.13.151.1 – 10.13.151.1410.13.151.15
11410.13.151.16/2810.13.151.17 – 10.13.151.3010.13.151.31
11510.13.151.32/2810.13.151.33 – 10.13.151.4610.13.151.47
11610.13.151.48/2810.13.151.49 – 10.13.151.6210.13.151.63
11710.13.151.64/2810.13.151.65 – 10.13.151.7810.13.151.79
11810.13.151.80/2810.13.151.81 – 10.13.151.9410.13.151.95
11910.13.151.96/2810.13.151.97 – 10.13.151.11010.13.151.111
12010.13.151.112/2810.13.151.113 – 10.13.151.12610.13.151.127
12110.13.151.128/2810.13.151.129 – 10.13.151.14210.13.151.143
12210.13.151.144/2810.13.151.145 – 10.13.151.15810.13.151.159
12310.13.151.160/2810.13.151.161 – 10.13.151.17410.13.151.175
12410.13.151.176/2810.13.151.177 – 10.13.151.19010.13.151.191
12510.13.151.192/2810.13.151.193 – 10.13.151.20610.13.151.207
12610.13.151.208/2810.13.151.209 – 10.13.151.22210.13.151.223
12710.13.151.224/2810.13.151.225 – 10.13.151.23810.13.151.239
12810.13.151.240/2810.13.151.241 – 10.13.151.25410.13.151.255
12910.13.152.0/2810.13.152.1 – 10.13.152.1410.13.152.15
13010.13.152.16/2810.13.152.17 – 10.13.152.3010.13.152.31
13110.13.152.32/2810.13.152.33 – 10.13.152.4610.13.152.47
13210.13.152.48/2810.13.152.49 – 10.13.152.6210.13.152.63
13310.13.152.64/2810.13.152.65 – 10.13.152.7810.13.152.79
13410.13.152.80/2810.13.152.81 – 10.13.152.9410.13.152.95
13510.13.152.96/2810.13.152.97 – 10.13.152.11010.13.152.111
13610.13.152.112/2810.13.152.113 – 10.13.152.12610.13.152.127
13710.13.152.128/2810.13.152.129 – 10.13.152.14210.13.152.143
13810.13.152.144/2810.13.152.145 – 10.13.152.15810.13.152.159
13910.13.152.160/2810.13.152.161 – 10.13.152.17410.13.152.175
14010.13.152.176/2810.13.152.177 – 10.13.152.19010.13.152.191
14110.13.152.192/2810.13.152.193 – 10.13.152.20610.13.152.207
14210.13.152.208/2810.13.152.209 – 10.13.152.22210.13.152.223
14310.13.152.224/2810.13.152.225 – 10.13.152.23810.13.152.239
14410.13.152.240/2810.13.152.241 – 10.13.152.25410.13.152.255
14510.13.153.0/2810.13.153.1 – 10.13.153.1410.13.153.15
14610.13.153.16/2810.13.153.17 – 10.13.153.3010.13.153.31
14710.13.153.32/2810.13.153.33 – 10.13.153.4610.13.153.47
14810.13.153.48/2810.13.153.49 – 10.13.153.6210.13.153.63
14910.13.153.64/2810.13.153.65 – 10.13.153.7810.13.153.79
15010.13.153.80/2810.13.153.81 – 10.13.153.9410.13.153.95
15110.13.153.96/2810.13.153.97 – 10.13.153.11010.13.153.111
15210.13.153.112/2810.13.153.113 – 10.13.153.12610.13.153.127
15310.13.153.128/2810.13.153.129 – 10.13.153.14210.13.153.143
15410.13.153.144/2810.13.153.145 – 10.13.153.15810.13.153.159
15510.13.153.160/2810.13.153.161 – 10.13.153.17410.13.153.175
15610.13.153.176/2810.13.153.177 – 10.13.153.19010.13.153.191
15710.13.153.192/2810.13.153.193 – 10.13.153.20610.13.153.207
15810.13.153.208/2810.13.153.209 – 10.13.153.22210.13.153.223
15910.13.153.224/2810.13.153.225 – 10.13.153.23810.13.153.239
16010.13.153.240/2810.13.153.241 – 10.13.153.25410.13.153.255
16110.13.154.0/2810.13.154.1 – 10.13.154.1410.13.154.15
16210.13.154.16/2810.13.154.17 – 10.13.154.3010.13.154.31
16310.13.154.32/2810.13.154.33 – 10.13.154.4610.13.154.47
16410.13.154.48/2810.13.154.49 – 10.13.154.6210.13.154.63
16510.13.154.64/2810.13.154.65 – 10.13.154.7810.13.154.79
16610.13.154.80/2810.13.154.81 – 10.13.154.9410.13.154.95
16710.13.154.96/2810.13.154.97 – 10.13.154.11010.13.154.111
16810.13.154.112/2810.13.154.113 – 10.13.154.12610.13.154.127
16910.13.154.128/2810.13.154.129 – 10.13.154.14210.13.154.143
17010.13.154.144/2810.13.154.145 – 10.13.154.15810.13.154.159
17110.13.154.160/2810.13.154.161 – 10.13.154.17410.13.154.175
17210.13.154.176/2810.13.154.177 – 10.13.154.19010.13.154.191
17310.13.154.192/2810.13.154.193 – 10.13.154.20610.13.154.207
17410.13.154.208/2810.13.154.209 – 10.13.154.22210.13.154.223
17510.13.154.224/2810.13.154.225 – 10.13.154.23810.13.154.239
17610.13.154.240/2810.13.154.241 – 10.13.154.25410.13.154.255
17710.13.155.0/2810.13.155.1 – 10.13.155.1410.13.155.15
17810.13.155.16/2810.13.155.17 – 10.13.155.3010.13.155.31
17910.13.155.32/2810.13.155.33 – 10.13.155.4610.13.155.47
18010.13.155.48/2810.13.155.49 – 10.13.155.6210.13.155.63
18110.13.155.64/2810.13.155.65 – 10.13.155.7810.13.155.79
18210.13.155.80/2810.13.155.81 – 10.13.155.9410.13.155.95
18310.13.155.96/2810.13.155.97 – 10.13.155.11010.13.155.111
18410.13.155.112/2810.13.155.113 – 10.13.155.12610.13.155.127
18510.13.155.128/2810.13.155.129 – 10.13.155.14210.13.155.143
18610.13.155.144/2810.13.155.145 – 10.13.155.15810.13.155.159
18710.13.155.160/2810.13.155.161 – 10.13.155.17410.13.155.175
18810.13.155.176/2810.13.155.177 – 10.13.155.19010.13.155.191
18910.13.155.192/2810.13.155.193 – 10.13.155.20610.13.155.207
19010.13.155.208/2810.13.155.209 – 10.13.155.22210.13.155.223
19110.13.155.224/2810.13.155.225 – 10.13.155.23810.13.155.239
19210.13.155.240/2810.13.155.241 – 10.13.155.25410.13.155.255
19310.13.156.0/2810.13.156.1 – 10.13.156.1410.13.156.15
19410.13.156.16/2810.13.156.17 – 10.13.156.3010.13.156.31
19510.13.156.32/2810.13.156.33 – 10.13.156.4610.13.156.47
19610.13.156.48/2810.13.156.49 – 10.13.156.6210.13.156.63
19710.13.156.64/2810.13.156.65 – 10.13.156.7810.13.156.79
19810.13.156.80/2810.13.156.81 – 10.13.156.9410.13.156.95
19910.13.156.96/2810.13.156.97 – 10.13.156.11010.13.156.111
20010.13.156.112/2810.13.156.113 – 10.13.156.12610.13.156.127
20110.13.156.128/2810.13.156.129 – 10.13.156.14210.13.156.143
20210.13.156.144/2810.13.156.145 – 10.13.156.15810.13.156.159
20310.13.156.160/2810.13.156.161 – 10.13.156.17410.13.156.175
20410.13.156.176/2810.13.156.177 – 10.13.156.19010.13.156.191
20510.13.156.192/2810.13.156.193 – 10.13.156.20610.13.156.207
20610.13.156.208/2810.13.156.209 – 10.13.156.22210.13.156.223
20710.13.156.224/2810.13.156.225 – 10.13.156.23810.13.156.239
20810.13.156.240/2810.13.156.241 – 10.13.156.25410.13.156.255
20910.13.157.0/2810.13.157.1 – 10.13.157.1410.13.157.15
21010.13.157.16/2810.13.157.17 – 10.13.157.3010.13.157.31
21110.13.157.32/2810.13.157.33 – 10.13.157.4610.13.157.47
21210.13.157.48/2810.13.157.49 – 10.13.157.6210.13.157.63
21310.13.157.64/2810.13.157.65 – 10.13.157.7810.13.157.79
21410.13.157.80/2810.13.157.81 – 10.13.157.9410.13.157.95
21510.13.157.96/2810.13.157.97 – 10.13.157.11010.13.157.111
21610.13.157.112/2810.13.157.113 – 10.13.157.12610.13.157.127
21710.13.157.128/2810.13.157.129 – 10.13.157.14210.13.157.143
21810.13.157.144/2810.13.157.145 – 10.13.157.15810.13.157.159
21910.13.157.160/2810.13.157.161 – 10.13.157.17410.13.157.175
22010.13.157.176/2810.13.157.177 – 10.13.157.19010.13.157.191
22110.13.157.192/2810.13.157.193 – 10.13.157.20610.13.157.207
22210.13.157.208/2810.13.157.209 – 10.13.157.22210.13.157.223
22310.13.157.224/2810.13.157.225 – 10.13.157.23810.13.157.239
22410.13.157.240/2810.13.157.241 – 10.13.157.25410.13.157.255
22510.13.158.0/2810.13.158.1 – 10.13.158.1410.13.158.15
22610.13.158.16/2810.13.158.17 – 10.13.158.3010.13.158.31
22710.13.158.32/2810.13.158.33 – 10.13.158.4610.13.158.47
22810.13.158.48/2810.13.158.49 – 10.13.158.6210.13.158.63
22910.13.158.64/2810.13.158.65 – 10.13.158.7810.13.158.79
23010.13.158.80/2810.13.158.81 – 10.13.158.9410.13.158.95
23110.13.158.96/2810.13.158.97 – 10.13.158.11010.13.158.111
23210.13.158.112/2810.13.158.113 – 10.13.158.12610.13.158.127
23310.13.158.128/2810.13.158.129 – 10.13.158.14210.13.158.143
23410.13.158.144/2810.13.158.145 – 10.13.158.15810.13.158.159
23510.13.158.160/2810.13.158.161 – 10.13.158.17410.13.158.175
23610.13.158.176/2810.13.158.177 – 10.13.158.19010.13.158.191
23710.13.158.192/2810.13.158.193 – 10.13.158.20610.13.158.207
23810.13.158.208/2810.13.158.209 – 10.13.158.22210.13.158.223
23910.13.158.224/2810.13.158.225 – 10.13.158.23810.13.158.239
24010.13.158.240/2810.13.158.241 – 10.13.158.25410.13.158.255
24110.13.159.0/2810.13.159.1 – 10.13.159.1410.13.159.15
24210.13.159.16/2810.13.159.17 – 10.13.159.3010.13.159.31
24310.13.159.32/2810.13.159.33 – 10.13.159.4610.13.159.47
24410.13.159.48/2810.13.159.49 – 10.13.159.6210.13.159.63
24510.13.159.64/2810.13.159.65 – 10.13.159.7810.13.159.79
24610.13.159.80/2810.13.159.81 – 10.13.159.9410.13.159.95
24710.13.159.96/2810.13.159.97 – 10.13.159.11010.13.159.111
24810.13.159.112/2810.13.159.113 – 10.13.159.12610.13.159.127
24910.13.159.128/2810.13.159.129 – 10.13.159.14210.13.159.143
25010.13.159.144/2810.13.159.145 – 10.13.159.15810.13.159.159
25110.13.159.160/2810.13.159.161 – 10.13.159.17410.13.159.175
25210.13.159.176/2810.13.159.177 – 10.13.159.19010.13.159.191
25310.13.159.192/2810.13.159.193 – 10.13.159.20610.13.159.207
25410.13.159.208/2810.13.159.209 – 10.13.159.22210.13.159.223
25510.13.159.224/2810.13.159.225 – 10.13.159.23810.13.159.239
25610.13.159.240/2810.13.159.241 – 10.13.159.25410.13.159.255
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 →