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)10.7.80.0/20
network10.7.80.0/20
broadcast10.7.95.255
first host10.7.80.1
last host10.7.95.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.7.80.0/20
address00001010.00000111.01010000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00000111.01010000.00000000
broadcast00001010.00000111.01011111.11111111
green = network part, grey = host part
hex0x0a075000
decimal168251392
reverse dns0.80.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:5000

/20 split into /29 · 512 subnets

close ×
#networkhost rangebroadcast
110.7.80.0/2910.7.80.1 – 10.7.80.610.7.80.7
210.7.80.8/2910.7.80.9 – 10.7.80.1410.7.80.15
310.7.80.16/2910.7.80.17 – 10.7.80.2210.7.80.23
410.7.80.24/2910.7.80.25 – 10.7.80.3010.7.80.31
510.7.80.32/2910.7.80.33 – 10.7.80.3810.7.80.39
610.7.80.40/2910.7.80.41 – 10.7.80.4610.7.80.47
710.7.80.48/2910.7.80.49 – 10.7.80.5410.7.80.55
810.7.80.56/2910.7.80.57 – 10.7.80.6210.7.80.63
910.7.80.64/2910.7.80.65 – 10.7.80.7010.7.80.71
1010.7.80.72/2910.7.80.73 – 10.7.80.7810.7.80.79
1110.7.80.80/2910.7.80.81 – 10.7.80.8610.7.80.87
1210.7.80.88/2910.7.80.89 – 10.7.80.9410.7.80.95
1310.7.80.96/2910.7.80.97 – 10.7.80.10210.7.80.103
1410.7.80.104/2910.7.80.105 – 10.7.80.11010.7.80.111
1510.7.80.112/2910.7.80.113 – 10.7.80.11810.7.80.119
1610.7.80.120/2910.7.80.121 – 10.7.80.12610.7.80.127
1710.7.80.128/2910.7.80.129 – 10.7.80.13410.7.80.135
1810.7.80.136/2910.7.80.137 – 10.7.80.14210.7.80.143
1910.7.80.144/2910.7.80.145 – 10.7.80.15010.7.80.151
2010.7.80.152/2910.7.80.153 – 10.7.80.15810.7.80.159
2110.7.80.160/2910.7.80.161 – 10.7.80.16610.7.80.167
2210.7.80.168/2910.7.80.169 – 10.7.80.17410.7.80.175
2310.7.80.176/2910.7.80.177 – 10.7.80.18210.7.80.183
2410.7.80.184/2910.7.80.185 – 10.7.80.19010.7.80.191
2510.7.80.192/2910.7.80.193 – 10.7.80.19810.7.80.199
2610.7.80.200/2910.7.80.201 – 10.7.80.20610.7.80.207
2710.7.80.208/2910.7.80.209 – 10.7.80.21410.7.80.215
2810.7.80.216/2910.7.80.217 – 10.7.80.22210.7.80.223
2910.7.80.224/2910.7.80.225 – 10.7.80.23010.7.80.231
3010.7.80.232/2910.7.80.233 – 10.7.80.23810.7.80.239
3110.7.80.240/2910.7.80.241 – 10.7.80.24610.7.80.247
3210.7.80.248/2910.7.80.249 – 10.7.80.25410.7.80.255
3310.7.81.0/2910.7.81.1 – 10.7.81.610.7.81.7
3410.7.81.8/2910.7.81.9 – 10.7.81.1410.7.81.15
3510.7.81.16/2910.7.81.17 – 10.7.81.2210.7.81.23
3610.7.81.24/2910.7.81.25 – 10.7.81.3010.7.81.31
3710.7.81.32/2910.7.81.33 – 10.7.81.3810.7.81.39
3810.7.81.40/2910.7.81.41 – 10.7.81.4610.7.81.47
3910.7.81.48/2910.7.81.49 – 10.7.81.5410.7.81.55
4010.7.81.56/2910.7.81.57 – 10.7.81.6210.7.81.63
4110.7.81.64/2910.7.81.65 – 10.7.81.7010.7.81.71
4210.7.81.72/2910.7.81.73 – 10.7.81.7810.7.81.79
4310.7.81.80/2910.7.81.81 – 10.7.81.8610.7.81.87
4410.7.81.88/2910.7.81.89 – 10.7.81.9410.7.81.95
4510.7.81.96/2910.7.81.97 – 10.7.81.10210.7.81.103
4610.7.81.104/2910.7.81.105 – 10.7.81.11010.7.81.111
4710.7.81.112/2910.7.81.113 – 10.7.81.11810.7.81.119
4810.7.81.120/2910.7.81.121 – 10.7.81.12610.7.81.127
4910.7.81.128/2910.7.81.129 – 10.7.81.13410.7.81.135
5010.7.81.136/2910.7.81.137 – 10.7.81.14210.7.81.143
5110.7.81.144/2910.7.81.145 – 10.7.81.15010.7.81.151
5210.7.81.152/2910.7.81.153 – 10.7.81.15810.7.81.159
5310.7.81.160/2910.7.81.161 – 10.7.81.16610.7.81.167
5410.7.81.168/2910.7.81.169 – 10.7.81.17410.7.81.175
5510.7.81.176/2910.7.81.177 – 10.7.81.18210.7.81.183
5610.7.81.184/2910.7.81.185 – 10.7.81.19010.7.81.191
5710.7.81.192/2910.7.81.193 – 10.7.81.19810.7.81.199
5810.7.81.200/2910.7.81.201 – 10.7.81.20610.7.81.207
5910.7.81.208/2910.7.81.209 – 10.7.81.21410.7.81.215
6010.7.81.216/2910.7.81.217 – 10.7.81.22210.7.81.223
6110.7.81.224/2910.7.81.225 – 10.7.81.23010.7.81.231
6210.7.81.232/2910.7.81.233 – 10.7.81.23810.7.81.239
6310.7.81.240/2910.7.81.241 – 10.7.81.24610.7.81.247
6410.7.81.248/2910.7.81.249 – 10.7.81.25410.7.81.255
6510.7.82.0/2910.7.82.1 – 10.7.82.610.7.82.7
6610.7.82.8/2910.7.82.9 – 10.7.82.1410.7.82.15
6710.7.82.16/2910.7.82.17 – 10.7.82.2210.7.82.23
6810.7.82.24/2910.7.82.25 – 10.7.82.3010.7.82.31
6910.7.82.32/2910.7.82.33 – 10.7.82.3810.7.82.39
7010.7.82.40/2910.7.82.41 – 10.7.82.4610.7.82.47
7110.7.82.48/2910.7.82.49 – 10.7.82.5410.7.82.55
7210.7.82.56/2910.7.82.57 – 10.7.82.6210.7.82.63
7310.7.82.64/2910.7.82.65 – 10.7.82.7010.7.82.71
7410.7.82.72/2910.7.82.73 – 10.7.82.7810.7.82.79
7510.7.82.80/2910.7.82.81 – 10.7.82.8610.7.82.87
7610.7.82.88/2910.7.82.89 – 10.7.82.9410.7.82.95
7710.7.82.96/2910.7.82.97 – 10.7.82.10210.7.82.103
7810.7.82.104/2910.7.82.105 – 10.7.82.11010.7.82.111
7910.7.82.112/2910.7.82.113 – 10.7.82.11810.7.82.119
8010.7.82.120/2910.7.82.121 – 10.7.82.12610.7.82.127
8110.7.82.128/2910.7.82.129 – 10.7.82.13410.7.82.135
8210.7.82.136/2910.7.82.137 – 10.7.82.14210.7.82.143
8310.7.82.144/2910.7.82.145 – 10.7.82.15010.7.82.151
8410.7.82.152/2910.7.82.153 – 10.7.82.15810.7.82.159
8510.7.82.160/2910.7.82.161 – 10.7.82.16610.7.82.167
8610.7.82.168/2910.7.82.169 – 10.7.82.17410.7.82.175
8710.7.82.176/2910.7.82.177 – 10.7.82.18210.7.82.183
8810.7.82.184/2910.7.82.185 – 10.7.82.19010.7.82.191
8910.7.82.192/2910.7.82.193 – 10.7.82.19810.7.82.199
9010.7.82.200/2910.7.82.201 – 10.7.82.20610.7.82.207
9110.7.82.208/2910.7.82.209 – 10.7.82.21410.7.82.215
9210.7.82.216/2910.7.82.217 – 10.7.82.22210.7.82.223
9310.7.82.224/2910.7.82.225 – 10.7.82.23010.7.82.231
9410.7.82.232/2910.7.82.233 – 10.7.82.23810.7.82.239
9510.7.82.240/2910.7.82.241 – 10.7.82.24610.7.82.247
9610.7.82.248/2910.7.82.249 – 10.7.82.25410.7.82.255
9710.7.83.0/2910.7.83.1 – 10.7.83.610.7.83.7
9810.7.83.8/2910.7.83.9 – 10.7.83.1410.7.83.15
9910.7.83.16/2910.7.83.17 – 10.7.83.2210.7.83.23
10010.7.83.24/2910.7.83.25 – 10.7.83.3010.7.83.31
10110.7.83.32/2910.7.83.33 – 10.7.83.3810.7.83.39
10210.7.83.40/2910.7.83.41 – 10.7.83.4610.7.83.47
10310.7.83.48/2910.7.83.49 – 10.7.83.5410.7.83.55
10410.7.83.56/2910.7.83.57 – 10.7.83.6210.7.83.63
10510.7.83.64/2910.7.83.65 – 10.7.83.7010.7.83.71
10610.7.83.72/2910.7.83.73 – 10.7.83.7810.7.83.79
10710.7.83.80/2910.7.83.81 – 10.7.83.8610.7.83.87
10810.7.83.88/2910.7.83.89 – 10.7.83.9410.7.83.95
10910.7.83.96/2910.7.83.97 – 10.7.83.10210.7.83.103
11010.7.83.104/2910.7.83.105 – 10.7.83.11010.7.83.111
11110.7.83.112/2910.7.83.113 – 10.7.83.11810.7.83.119
11210.7.83.120/2910.7.83.121 – 10.7.83.12610.7.83.127
11310.7.83.128/2910.7.83.129 – 10.7.83.13410.7.83.135
11410.7.83.136/2910.7.83.137 – 10.7.83.14210.7.83.143
11510.7.83.144/2910.7.83.145 – 10.7.83.15010.7.83.151
11610.7.83.152/2910.7.83.153 – 10.7.83.15810.7.83.159
11710.7.83.160/2910.7.83.161 – 10.7.83.16610.7.83.167
11810.7.83.168/2910.7.83.169 – 10.7.83.17410.7.83.175
11910.7.83.176/2910.7.83.177 – 10.7.83.18210.7.83.183
12010.7.83.184/2910.7.83.185 – 10.7.83.19010.7.83.191
12110.7.83.192/2910.7.83.193 – 10.7.83.19810.7.83.199
12210.7.83.200/2910.7.83.201 – 10.7.83.20610.7.83.207
12310.7.83.208/2910.7.83.209 – 10.7.83.21410.7.83.215
12410.7.83.216/2910.7.83.217 – 10.7.83.22210.7.83.223
12510.7.83.224/2910.7.83.225 – 10.7.83.23010.7.83.231
12610.7.83.232/2910.7.83.233 – 10.7.83.23810.7.83.239
12710.7.83.240/2910.7.83.241 – 10.7.83.24610.7.83.247
12810.7.83.248/2910.7.83.249 – 10.7.83.25410.7.83.255
12910.7.84.0/2910.7.84.1 – 10.7.84.610.7.84.7
13010.7.84.8/2910.7.84.9 – 10.7.84.1410.7.84.15
13110.7.84.16/2910.7.84.17 – 10.7.84.2210.7.84.23
13210.7.84.24/2910.7.84.25 – 10.7.84.3010.7.84.31
13310.7.84.32/2910.7.84.33 – 10.7.84.3810.7.84.39
13410.7.84.40/2910.7.84.41 – 10.7.84.4610.7.84.47
13510.7.84.48/2910.7.84.49 – 10.7.84.5410.7.84.55
13610.7.84.56/2910.7.84.57 – 10.7.84.6210.7.84.63
13710.7.84.64/2910.7.84.65 – 10.7.84.7010.7.84.71
13810.7.84.72/2910.7.84.73 – 10.7.84.7810.7.84.79
13910.7.84.80/2910.7.84.81 – 10.7.84.8610.7.84.87
14010.7.84.88/2910.7.84.89 – 10.7.84.9410.7.84.95
14110.7.84.96/2910.7.84.97 – 10.7.84.10210.7.84.103
14210.7.84.104/2910.7.84.105 – 10.7.84.11010.7.84.111
14310.7.84.112/2910.7.84.113 – 10.7.84.11810.7.84.119
14410.7.84.120/2910.7.84.121 – 10.7.84.12610.7.84.127
14510.7.84.128/2910.7.84.129 – 10.7.84.13410.7.84.135
14610.7.84.136/2910.7.84.137 – 10.7.84.14210.7.84.143
14710.7.84.144/2910.7.84.145 – 10.7.84.15010.7.84.151
14810.7.84.152/2910.7.84.153 – 10.7.84.15810.7.84.159
14910.7.84.160/2910.7.84.161 – 10.7.84.16610.7.84.167
15010.7.84.168/2910.7.84.169 – 10.7.84.17410.7.84.175
15110.7.84.176/2910.7.84.177 – 10.7.84.18210.7.84.183
15210.7.84.184/2910.7.84.185 – 10.7.84.19010.7.84.191
15310.7.84.192/2910.7.84.193 – 10.7.84.19810.7.84.199
15410.7.84.200/2910.7.84.201 – 10.7.84.20610.7.84.207
15510.7.84.208/2910.7.84.209 – 10.7.84.21410.7.84.215
15610.7.84.216/2910.7.84.217 – 10.7.84.22210.7.84.223
15710.7.84.224/2910.7.84.225 – 10.7.84.23010.7.84.231
15810.7.84.232/2910.7.84.233 – 10.7.84.23810.7.84.239
15910.7.84.240/2910.7.84.241 – 10.7.84.24610.7.84.247
16010.7.84.248/2910.7.84.249 – 10.7.84.25410.7.84.255
16110.7.85.0/2910.7.85.1 – 10.7.85.610.7.85.7
16210.7.85.8/2910.7.85.9 – 10.7.85.1410.7.85.15
16310.7.85.16/2910.7.85.17 – 10.7.85.2210.7.85.23
16410.7.85.24/2910.7.85.25 – 10.7.85.3010.7.85.31
16510.7.85.32/2910.7.85.33 – 10.7.85.3810.7.85.39
16610.7.85.40/2910.7.85.41 – 10.7.85.4610.7.85.47
16710.7.85.48/2910.7.85.49 – 10.7.85.5410.7.85.55
16810.7.85.56/2910.7.85.57 – 10.7.85.6210.7.85.63
16910.7.85.64/2910.7.85.65 – 10.7.85.7010.7.85.71
17010.7.85.72/2910.7.85.73 – 10.7.85.7810.7.85.79
17110.7.85.80/2910.7.85.81 – 10.7.85.8610.7.85.87
17210.7.85.88/2910.7.85.89 – 10.7.85.9410.7.85.95
17310.7.85.96/2910.7.85.97 – 10.7.85.10210.7.85.103
17410.7.85.104/2910.7.85.105 – 10.7.85.11010.7.85.111
17510.7.85.112/2910.7.85.113 – 10.7.85.11810.7.85.119
17610.7.85.120/2910.7.85.121 – 10.7.85.12610.7.85.127
17710.7.85.128/2910.7.85.129 – 10.7.85.13410.7.85.135
17810.7.85.136/2910.7.85.137 – 10.7.85.14210.7.85.143
17910.7.85.144/2910.7.85.145 – 10.7.85.15010.7.85.151
18010.7.85.152/2910.7.85.153 – 10.7.85.15810.7.85.159
18110.7.85.160/2910.7.85.161 – 10.7.85.16610.7.85.167
18210.7.85.168/2910.7.85.169 – 10.7.85.17410.7.85.175
18310.7.85.176/2910.7.85.177 – 10.7.85.18210.7.85.183
18410.7.85.184/2910.7.85.185 – 10.7.85.19010.7.85.191
18510.7.85.192/2910.7.85.193 – 10.7.85.19810.7.85.199
18610.7.85.200/2910.7.85.201 – 10.7.85.20610.7.85.207
18710.7.85.208/2910.7.85.209 – 10.7.85.21410.7.85.215
18810.7.85.216/2910.7.85.217 – 10.7.85.22210.7.85.223
18910.7.85.224/2910.7.85.225 – 10.7.85.23010.7.85.231
19010.7.85.232/2910.7.85.233 – 10.7.85.23810.7.85.239
19110.7.85.240/2910.7.85.241 – 10.7.85.24610.7.85.247
19210.7.85.248/2910.7.85.249 – 10.7.85.25410.7.85.255
19310.7.86.0/2910.7.86.1 – 10.7.86.610.7.86.7
19410.7.86.8/2910.7.86.9 – 10.7.86.1410.7.86.15
19510.7.86.16/2910.7.86.17 – 10.7.86.2210.7.86.23
19610.7.86.24/2910.7.86.25 – 10.7.86.3010.7.86.31
19710.7.86.32/2910.7.86.33 – 10.7.86.3810.7.86.39
19810.7.86.40/2910.7.86.41 – 10.7.86.4610.7.86.47
19910.7.86.48/2910.7.86.49 – 10.7.86.5410.7.86.55
20010.7.86.56/2910.7.86.57 – 10.7.86.6210.7.86.63
20110.7.86.64/2910.7.86.65 – 10.7.86.7010.7.86.71
20210.7.86.72/2910.7.86.73 – 10.7.86.7810.7.86.79
20310.7.86.80/2910.7.86.81 – 10.7.86.8610.7.86.87
20410.7.86.88/2910.7.86.89 – 10.7.86.9410.7.86.95
20510.7.86.96/2910.7.86.97 – 10.7.86.10210.7.86.103
20610.7.86.104/2910.7.86.105 – 10.7.86.11010.7.86.111
20710.7.86.112/2910.7.86.113 – 10.7.86.11810.7.86.119
20810.7.86.120/2910.7.86.121 – 10.7.86.12610.7.86.127
20910.7.86.128/2910.7.86.129 – 10.7.86.13410.7.86.135
21010.7.86.136/2910.7.86.137 – 10.7.86.14210.7.86.143
21110.7.86.144/2910.7.86.145 – 10.7.86.15010.7.86.151
21210.7.86.152/2910.7.86.153 – 10.7.86.15810.7.86.159
21310.7.86.160/2910.7.86.161 – 10.7.86.16610.7.86.167
21410.7.86.168/2910.7.86.169 – 10.7.86.17410.7.86.175
21510.7.86.176/2910.7.86.177 – 10.7.86.18210.7.86.183
21610.7.86.184/2910.7.86.185 – 10.7.86.19010.7.86.191
21710.7.86.192/2910.7.86.193 – 10.7.86.19810.7.86.199
21810.7.86.200/2910.7.86.201 – 10.7.86.20610.7.86.207
21910.7.86.208/2910.7.86.209 – 10.7.86.21410.7.86.215
22010.7.86.216/2910.7.86.217 – 10.7.86.22210.7.86.223
22110.7.86.224/2910.7.86.225 – 10.7.86.23010.7.86.231
22210.7.86.232/2910.7.86.233 – 10.7.86.23810.7.86.239
22310.7.86.240/2910.7.86.241 – 10.7.86.24610.7.86.247
22410.7.86.248/2910.7.86.249 – 10.7.86.25410.7.86.255
22510.7.87.0/2910.7.87.1 – 10.7.87.610.7.87.7
22610.7.87.8/2910.7.87.9 – 10.7.87.1410.7.87.15
22710.7.87.16/2910.7.87.17 – 10.7.87.2210.7.87.23
22810.7.87.24/2910.7.87.25 – 10.7.87.3010.7.87.31
22910.7.87.32/2910.7.87.33 – 10.7.87.3810.7.87.39
23010.7.87.40/2910.7.87.41 – 10.7.87.4610.7.87.47
23110.7.87.48/2910.7.87.49 – 10.7.87.5410.7.87.55
23210.7.87.56/2910.7.87.57 – 10.7.87.6210.7.87.63
23310.7.87.64/2910.7.87.65 – 10.7.87.7010.7.87.71
23410.7.87.72/2910.7.87.73 – 10.7.87.7810.7.87.79
23510.7.87.80/2910.7.87.81 – 10.7.87.8610.7.87.87
23610.7.87.88/2910.7.87.89 – 10.7.87.9410.7.87.95
23710.7.87.96/2910.7.87.97 – 10.7.87.10210.7.87.103
23810.7.87.104/2910.7.87.105 – 10.7.87.11010.7.87.111
23910.7.87.112/2910.7.87.113 – 10.7.87.11810.7.87.119
24010.7.87.120/2910.7.87.121 – 10.7.87.12610.7.87.127
24110.7.87.128/2910.7.87.129 – 10.7.87.13410.7.87.135
24210.7.87.136/2910.7.87.137 – 10.7.87.14210.7.87.143
24310.7.87.144/2910.7.87.145 – 10.7.87.15010.7.87.151
24410.7.87.152/2910.7.87.153 – 10.7.87.15810.7.87.159
24510.7.87.160/2910.7.87.161 – 10.7.87.16610.7.87.167
24610.7.87.168/2910.7.87.169 – 10.7.87.17410.7.87.175
24710.7.87.176/2910.7.87.177 – 10.7.87.18210.7.87.183
24810.7.87.184/2910.7.87.185 – 10.7.87.19010.7.87.191
24910.7.87.192/2910.7.87.193 – 10.7.87.19810.7.87.199
25010.7.87.200/2910.7.87.201 – 10.7.87.20610.7.87.207
25110.7.87.208/2910.7.87.209 – 10.7.87.21410.7.87.215
25210.7.87.216/2910.7.87.217 – 10.7.87.22210.7.87.223
25310.7.87.224/2910.7.87.225 – 10.7.87.23010.7.87.231
25410.7.87.232/2910.7.87.233 – 10.7.87.23810.7.87.239
25510.7.87.240/2910.7.87.241 – 10.7.87.24610.7.87.247
25610.7.87.248/2910.7.87.249 – 10.7.87.25410.7.87.255

showing 256 of 512

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 →