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)10.9.0.0/20
network10.9.0.0/20
broadcast10.9.15.255
first host10.9.0.1
last host10.9.15.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.9.0.0/20
address00001010.00001001.00000000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00001001.00000000.00000000
broadcast00001010.00001001.00001111.11111111
green = network part, grey = host part
hex0x0a090000
decimal168361984
reverse dns0.0.9.10.in-addr.arpa
ipv4-mapped::ffff:a09:0

/20 split into /29 · 512 subnets

close ×
#networkhost rangebroadcast
110.9.0.0/2910.9.0.1 – 10.9.0.610.9.0.7
210.9.0.8/2910.9.0.9 – 10.9.0.1410.9.0.15
310.9.0.16/2910.9.0.17 – 10.9.0.2210.9.0.23
410.9.0.24/2910.9.0.25 – 10.9.0.3010.9.0.31
510.9.0.32/2910.9.0.33 – 10.9.0.3810.9.0.39
610.9.0.40/2910.9.0.41 – 10.9.0.4610.9.0.47
710.9.0.48/2910.9.0.49 – 10.9.0.5410.9.0.55
810.9.0.56/2910.9.0.57 – 10.9.0.6210.9.0.63
910.9.0.64/2910.9.0.65 – 10.9.0.7010.9.0.71
1010.9.0.72/2910.9.0.73 – 10.9.0.7810.9.0.79
1110.9.0.80/2910.9.0.81 – 10.9.0.8610.9.0.87
1210.9.0.88/2910.9.0.89 – 10.9.0.9410.9.0.95
1310.9.0.96/2910.9.0.97 – 10.9.0.10210.9.0.103
1410.9.0.104/2910.9.0.105 – 10.9.0.11010.9.0.111
1510.9.0.112/2910.9.0.113 – 10.9.0.11810.9.0.119
1610.9.0.120/2910.9.0.121 – 10.9.0.12610.9.0.127
1710.9.0.128/2910.9.0.129 – 10.9.0.13410.9.0.135
1810.9.0.136/2910.9.0.137 – 10.9.0.14210.9.0.143
1910.9.0.144/2910.9.0.145 – 10.9.0.15010.9.0.151
2010.9.0.152/2910.9.0.153 – 10.9.0.15810.9.0.159
2110.9.0.160/2910.9.0.161 – 10.9.0.16610.9.0.167
2210.9.0.168/2910.9.0.169 – 10.9.0.17410.9.0.175
2310.9.0.176/2910.9.0.177 – 10.9.0.18210.9.0.183
2410.9.0.184/2910.9.0.185 – 10.9.0.19010.9.0.191
2510.9.0.192/2910.9.0.193 – 10.9.0.19810.9.0.199
2610.9.0.200/2910.9.0.201 – 10.9.0.20610.9.0.207
2710.9.0.208/2910.9.0.209 – 10.9.0.21410.9.0.215
2810.9.0.216/2910.9.0.217 – 10.9.0.22210.9.0.223
2910.9.0.224/2910.9.0.225 – 10.9.0.23010.9.0.231
3010.9.0.232/2910.9.0.233 – 10.9.0.23810.9.0.239
3110.9.0.240/2910.9.0.241 – 10.9.0.24610.9.0.247
3210.9.0.248/2910.9.0.249 – 10.9.0.25410.9.0.255
3310.9.1.0/2910.9.1.1 – 10.9.1.610.9.1.7
3410.9.1.8/2910.9.1.9 – 10.9.1.1410.9.1.15
3510.9.1.16/2910.9.1.17 – 10.9.1.2210.9.1.23
3610.9.1.24/2910.9.1.25 – 10.9.1.3010.9.1.31
3710.9.1.32/2910.9.1.33 – 10.9.1.3810.9.1.39
3810.9.1.40/2910.9.1.41 – 10.9.1.4610.9.1.47
3910.9.1.48/2910.9.1.49 – 10.9.1.5410.9.1.55
4010.9.1.56/2910.9.1.57 – 10.9.1.6210.9.1.63
4110.9.1.64/2910.9.1.65 – 10.9.1.7010.9.1.71
4210.9.1.72/2910.9.1.73 – 10.9.1.7810.9.1.79
4310.9.1.80/2910.9.1.81 – 10.9.1.8610.9.1.87
4410.9.1.88/2910.9.1.89 – 10.9.1.9410.9.1.95
4510.9.1.96/2910.9.1.97 – 10.9.1.10210.9.1.103
4610.9.1.104/2910.9.1.105 – 10.9.1.11010.9.1.111
4710.9.1.112/2910.9.1.113 – 10.9.1.11810.9.1.119
4810.9.1.120/2910.9.1.121 – 10.9.1.12610.9.1.127
4910.9.1.128/2910.9.1.129 – 10.9.1.13410.9.1.135
5010.9.1.136/2910.9.1.137 – 10.9.1.14210.9.1.143
5110.9.1.144/2910.9.1.145 – 10.9.1.15010.9.1.151
5210.9.1.152/2910.9.1.153 – 10.9.1.15810.9.1.159
5310.9.1.160/2910.9.1.161 – 10.9.1.16610.9.1.167
5410.9.1.168/2910.9.1.169 – 10.9.1.17410.9.1.175
5510.9.1.176/2910.9.1.177 – 10.9.1.18210.9.1.183
5610.9.1.184/2910.9.1.185 – 10.9.1.19010.9.1.191
5710.9.1.192/2910.9.1.193 – 10.9.1.19810.9.1.199
5810.9.1.200/2910.9.1.201 – 10.9.1.20610.9.1.207
5910.9.1.208/2910.9.1.209 – 10.9.1.21410.9.1.215
6010.9.1.216/2910.9.1.217 – 10.9.1.22210.9.1.223
6110.9.1.224/2910.9.1.225 – 10.9.1.23010.9.1.231
6210.9.1.232/2910.9.1.233 – 10.9.1.23810.9.1.239
6310.9.1.240/2910.9.1.241 – 10.9.1.24610.9.1.247
6410.9.1.248/2910.9.1.249 – 10.9.1.25410.9.1.255
6510.9.2.0/2910.9.2.1 – 10.9.2.610.9.2.7
6610.9.2.8/2910.9.2.9 – 10.9.2.1410.9.2.15
6710.9.2.16/2910.9.2.17 – 10.9.2.2210.9.2.23
6810.9.2.24/2910.9.2.25 – 10.9.2.3010.9.2.31
6910.9.2.32/2910.9.2.33 – 10.9.2.3810.9.2.39
7010.9.2.40/2910.9.2.41 – 10.9.2.4610.9.2.47
7110.9.2.48/2910.9.2.49 – 10.9.2.5410.9.2.55
7210.9.2.56/2910.9.2.57 – 10.9.2.6210.9.2.63
7310.9.2.64/2910.9.2.65 – 10.9.2.7010.9.2.71
7410.9.2.72/2910.9.2.73 – 10.9.2.7810.9.2.79
7510.9.2.80/2910.9.2.81 – 10.9.2.8610.9.2.87
7610.9.2.88/2910.9.2.89 – 10.9.2.9410.9.2.95
7710.9.2.96/2910.9.2.97 – 10.9.2.10210.9.2.103
7810.9.2.104/2910.9.2.105 – 10.9.2.11010.9.2.111
7910.9.2.112/2910.9.2.113 – 10.9.2.11810.9.2.119
8010.9.2.120/2910.9.2.121 – 10.9.2.12610.9.2.127
8110.9.2.128/2910.9.2.129 – 10.9.2.13410.9.2.135
8210.9.2.136/2910.9.2.137 – 10.9.2.14210.9.2.143
8310.9.2.144/2910.9.2.145 – 10.9.2.15010.9.2.151
8410.9.2.152/2910.9.2.153 – 10.9.2.15810.9.2.159
8510.9.2.160/2910.9.2.161 – 10.9.2.16610.9.2.167
8610.9.2.168/2910.9.2.169 – 10.9.2.17410.9.2.175
8710.9.2.176/2910.9.2.177 – 10.9.2.18210.9.2.183
8810.9.2.184/2910.9.2.185 – 10.9.2.19010.9.2.191
8910.9.2.192/2910.9.2.193 – 10.9.2.19810.9.2.199
9010.9.2.200/2910.9.2.201 – 10.9.2.20610.9.2.207
9110.9.2.208/2910.9.2.209 – 10.9.2.21410.9.2.215
9210.9.2.216/2910.9.2.217 – 10.9.2.22210.9.2.223
9310.9.2.224/2910.9.2.225 – 10.9.2.23010.9.2.231
9410.9.2.232/2910.9.2.233 – 10.9.2.23810.9.2.239
9510.9.2.240/2910.9.2.241 – 10.9.2.24610.9.2.247
9610.9.2.248/2910.9.2.249 – 10.9.2.25410.9.2.255
9710.9.3.0/2910.9.3.1 – 10.9.3.610.9.3.7
9810.9.3.8/2910.9.3.9 – 10.9.3.1410.9.3.15
9910.9.3.16/2910.9.3.17 – 10.9.3.2210.9.3.23
10010.9.3.24/2910.9.3.25 – 10.9.3.3010.9.3.31
10110.9.3.32/2910.9.3.33 – 10.9.3.3810.9.3.39
10210.9.3.40/2910.9.3.41 – 10.9.3.4610.9.3.47
10310.9.3.48/2910.9.3.49 – 10.9.3.5410.9.3.55
10410.9.3.56/2910.9.3.57 – 10.9.3.6210.9.3.63
10510.9.3.64/2910.9.3.65 – 10.9.3.7010.9.3.71
10610.9.3.72/2910.9.3.73 – 10.9.3.7810.9.3.79
10710.9.3.80/2910.9.3.81 – 10.9.3.8610.9.3.87
10810.9.3.88/2910.9.3.89 – 10.9.3.9410.9.3.95
10910.9.3.96/2910.9.3.97 – 10.9.3.10210.9.3.103
11010.9.3.104/2910.9.3.105 – 10.9.3.11010.9.3.111
11110.9.3.112/2910.9.3.113 – 10.9.3.11810.9.3.119
11210.9.3.120/2910.9.3.121 – 10.9.3.12610.9.3.127
11310.9.3.128/2910.9.3.129 – 10.9.3.13410.9.3.135
11410.9.3.136/2910.9.3.137 – 10.9.3.14210.9.3.143
11510.9.3.144/2910.9.3.145 – 10.9.3.15010.9.3.151
11610.9.3.152/2910.9.3.153 – 10.9.3.15810.9.3.159
11710.9.3.160/2910.9.3.161 – 10.9.3.16610.9.3.167
11810.9.3.168/2910.9.3.169 – 10.9.3.17410.9.3.175
11910.9.3.176/2910.9.3.177 – 10.9.3.18210.9.3.183
12010.9.3.184/2910.9.3.185 – 10.9.3.19010.9.3.191
12110.9.3.192/2910.9.3.193 – 10.9.3.19810.9.3.199
12210.9.3.200/2910.9.3.201 – 10.9.3.20610.9.3.207
12310.9.3.208/2910.9.3.209 – 10.9.3.21410.9.3.215
12410.9.3.216/2910.9.3.217 – 10.9.3.22210.9.3.223
12510.9.3.224/2910.9.3.225 – 10.9.3.23010.9.3.231
12610.9.3.232/2910.9.3.233 – 10.9.3.23810.9.3.239
12710.9.3.240/2910.9.3.241 – 10.9.3.24610.9.3.247
12810.9.3.248/2910.9.3.249 – 10.9.3.25410.9.3.255
12910.9.4.0/2910.9.4.1 – 10.9.4.610.9.4.7
13010.9.4.8/2910.9.4.9 – 10.9.4.1410.9.4.15
13110.9.4.16/2910.9.4.17 – 10.9.4.2210.9.4.23
13210.9.4.24/2910.9.4.25 – 10.9.4.3010.9.4.31
13310.9.4.32/2910.9.4.33 – 10.9.4.3810.9.4.39
13410.9.4.40/2910.9.4.41 – 10.9.4.4610.9.4.47
13510.9.4.48/2910.9.4.49 – 10.9.4.5410.9.4.55
13610.9.4.56/2910.9.4.57 – 10.9.4.6210.9.4.63
13710.9.4.64/2910.9.4.65 – 10.9.4.7010.9.4.71
13810.9.4.72/2910.9.4.73 – 10.9.4.7810.9.4.79
13910.9.4.80/2910.9.4.81 – 10.9.4.8610.9.4.87
14010.9.4.88/2910.9.4.89 – 10.9.4.9410.9.4.95
14110.9.4.96/2910.9.4.97 – 10.9.4.10210.9.4.103
14210.9.4.104/2910.9.4.105 – 10.9.4.11010.9.4.111
14310.9.4.112/2910.9.4.113 – 10.9.4.11810.9.4.119
14410.9.4.120/2910.9.4.121 – 10.9.4.12610.9.4.127
14510.9.4.128/2910.9.4.129 – 10.9.4.13410.9.4.135
14610.9.4.136/2910.9.4.137 – 10.9.4.14210.9.4.143
14710.9.4.144/2910.9.4.145 – 10.9.4.15010.9.4.151
14810.9.4.152/2910.9.4.153 – 10.9.4.15810.9.4.159
14910.9.4.160/2910.9.4.161 – 10.9.4.16610.9.4.167
15010.9.4.168/2910.9.4.169 – 10.9.4.17410.9.4.175
15110.9.4.176/2910.9.4.177 – 10.9.4.18210.9.4.183
15210.9.4.184/2910.9.4.185 – 10.9.4.19010.9.4.191
15310.9.4.192/2910.9.4.193 – 10.9.4.19810.9.4.199
15410.9.4.200/2910.9.4.201 – 10.9.4.20610.9.4.207
15510.9.4.208/2910.9.4.209 – 10.9.4.21410.9.4.215
15610.9.4.216/2910.9.4.217 – 10.9.4.22210.9.4.223
15710.9.4.224/2910.9.4.225 – 10.9.4.23010.9.4.231
15810.9.4.232/2910.9.4.233 – 10.9.4.23810.9.4.239
15910.9.4.240/2910.9.4.241 – 10.9.4.24610.9.4.247
16010.9.4.248/2910.9.4.249 – 10.9.4.25410.9.4.255
16110.9.5.0/2910.9.5.1 – 10.9.5.610.9.5.7
16210.9.5.8/2910.9.5.9 – 10.9.5.1410.9.5.15
16310.9.5.16/2910.9.5.17 – 10.9.5.2210.9.5.23
16410.9.5.24/2910.9.5.25 – 10.9.5.3010.9.5.31
16510.9.5.32/2910.9.5.33 – 10.9.5.3810.9.5.39
16610.9.5.40/2910.9.5.41 – 10.9.5.4610.9.5.47
16710.9.5.48/2910.9.5.49 – 10.9.5.5410.9.5.55
16810.9.5.56/2910.9.5.57 – 10.9.5.6210.9.5.63
16910.9.5.64/2910.9.5.65 – 10.9.5.7010.9.5.71
17010.9.5.72/2910.9.5.73 – 10.9.5.7810.9.5.79
17110.9.5.80/2910.9.5.81 – 10.9.5.8610.9.5.87
17210.9.5.88/2910.9.5.89 – 10.9.5.9410.9.5.95
17310.9.5.96/2910.9.5.97 – 10.9.5.10210.9.5.103
17410.9.5.104/2910.9.5.105 – 10.9.5.11010.9.5.111
17510.9.5.112/2910.9.5.113 – 10.9.5.11810.9.5.119
17610.9.5.120/2910.9.5.121 – 10.9.5.12610.9.5.127
17710.9.5.128/2910.9.5.129 – 10.9.5.13410.9.5.135
17810.9.5.136/2910.9.5.137 – 10.9.5.14210.9.5.143
17910.9.5.144/2910.9.5.145 – 10.9.5.15010.9.5.151
18010.9.5.152/2910.9.5.153 – 10.9.5.15810.9.5.159
18110.9.5.160/2910.9.5.161 – 10.9.5.16610.9.5.167
18210.9.5.168/2910.9.5.169 – 10.9.5.17410.9.5.175
18310.9.5.176/2910.9.5.177 – 10.9.5.18210.9.5.183
18410.9.5.184/2910.9.5.185 – 10.9.5.19010.9.5.191
18510.9.5.192/2910.9.5.193 – 10.9.5.19810.9.5.199
18610.9.5.200/2910.9.5.201 – 10.9.5.20610.9.5.207
18710.9.5.208/2910.9.5.209 – 10.9.5.21410.9.5.215
18810.9.5.216/2910.9.5.217 – 10.9.5.22210.9.5.223
18910.9.5.224/2910.9.5.225 – 10.9.5.23010.9.5.231
19010.9.5.232/2910.9.5.233 – 10.9.5.23810.9.5.239
19110.9.5.240/2910.9.5.241 – 10.9.5.24610.9.5.247
19210.9.5.248/2910.9.5.249 – 10.9.5.25410.9.5.255
19310.9.6.0/2910.9.6.1 – 10.9.6.610.9.6.7
19410.9.6.8/2910.9.6.9 – 10.9.6.1410.9.6.15
19510.9.6.16/2910.9.6.17 – 10.9.6.2210.9.6.23
19610.9.6.24/2910.9.6.25 – 10.9.6.3010.9.6.31
19710.9.6.32/2910.9.6.33 – 10.9.6.3810.9.6.39
19810.9.6.40/2910.9.6.41 – 10.9.6.4610.9.6.47
19910.9.6.48/2910.9.6.49 – 10.9.6.5410.9.6.55
20010.9.6.56/2910.9.6.57 – 10.9.6.6210.9.6.63
20110.9.6.64/2910.9.6.65 – 10.9.6.7010.9.6.71
20210.9.6.72/2910.9.6.73 – 10.9.6.7810.9.6.79
20310.9.6.80/2910.9.6.81 – 10.9.6.8610.9.6.87
20410.9.6.88/2910.9.6.89 – 10.9.6.9410.9.6.95
20510.9.6.96/2910.9.6.97 – 10.9.6.10210.9.6.103
20610.9.6.104/2910.9.6.105 – 10.9.6.11010.9.6.111
20710.9.6.112/2910.9.6.113 – 10.9.6.11810.9.6.119
20810.9.6.120/2910.9.6.121 – 10.9.6.12610.9.6.127
20910.9.6.128/2910.9.6.129 – 10.9.6.13410.9.6.135
21010.9.6.136/2910.9.6.137 – 10.9.6.14210.9.6.143
21110.9.6.144/2910.9.6.145 – 10.9.6.15010.9.6.151
21210.9.6.152/2910.9.6.153 – 10.9.6.15810.9.6.159
21310.9.6.160/2910.9.6.161 – 10.9.6.16610.9.6.167
21410.9.6.168/2910.9.6.169 – 10.9.6.17410.9.6.175
21510.9.6.176/2910.9.6.177 – 10.9.6.18210.9.6.183
21610.9.6.184/2910.9.6.185 – 10.9.6.19010.9.6.191
21710.9.6.192/2910.9.6.193 – 10.9.6.19810.9.6.199
21810.9.6.200/2910.9.6.201 – 10.9.6.20610.9.6.207
21910.9.6.208/2910.9.6.209 – 10.9.6.21410.9.6.215
22010.9.6.216/2910.9.6.217 – 10.9.6.22210.9.6.223
22110.9.6.224/2910.9.6.225 – 10.9.6.23010.9.6.231
22210.9.6.232/2910.9.6.233 – 10.9.6.23810.9.6.239
22310.9.6.240/2910.9.6.241 – 10.9.6.24610.9.6.247
22410.9.6.248/2910.9.6.249 – 10.9.6.25410.9.6.255
22510.9.7.0/2910.9.7.1 – 10.9.7.610.9.7.7
22610.9.7.8/2910.9.7.9 – 10.9.7.1410.9.7.15
22710.9.7.16/2910.9.7.17 – 10.9.7.2210.9.7.23
22810.9.7.24/2910.9.7.25 – 10.9.7.3010.9.7.31
22910.9.7.32/2910.9.7.33 – 10.9.7.3810.9.7.39
23010.9.7.40/2910.9.7.41 – 10.9.7.4610.9.7.47
23110.9.7.48/2910.9.7.49 – 10.9.7.5410.9.7.55
23210.9.7.56/2910.9.7.57 – 10.9.7.6210.9.7.63
23310.9.7.64/2910.9.7.65 – 10.9.7.7010.9.7.71
23410.9.7.72/2910.9.7.73 – 10.9.7.7810.9.7.79
23510.9.7.80/2910.9.7.81 – 10.9.7.8610.9.7.87
23610.9.7.88/2910.9.7.89 – 10.9.7.9410.9.7.95
23710.9.7.96/2910.9.7.97 – 10.9.7.10210.9.7.103
23810.9.7.104/2910.9.7.105 – 10.9.7.11010.9.7.111
23910.9.7.112/2910.9.7.113 – 10.9.7.11810.9.7.119
24010.9.7.120/2910.9.7.121 – 10.9.7.12610.9.7.127
24110.9.7.128/2910.9.7.129 – 10.9.7.13410.9.7.135
24210.9.7.136/2910.9.7.137 – 10.9.7.14210.9.7.143
24310.9.7.144/2910.9.7.145 – 10.9.7.15010.9.7.151
24410.9.7.152/2910.9.7.153 – 10.9.7.15810.9.7.159
24510.9.7.160/2910.9.7.161 – 10.9.7.16610.9.7.167
24610.9.7.168/2910.9.7.169 – 10.9.7.17410.9.7.175
24710.9.7.176/2910.9.7.177 – 10.9.7.18210.9.7.183
24810.9.7.184/2910.9.7.185 – 10.9.7.19010.9.7.191
24910.9.7.192/2910.9.7.193 – 10.9.7.19810.9.7.199
25010.9.7.200/2910.9.7.201 – 10.9.7.20610.9.7.207
25110.9.7.208/2910.9.7.209 – 10.9.7.21410.9.7.215
25210.9.7.216/2910.9.7.217 – 10.9.7.22210.9.7.223
25310.9.7.224/2910.9.7.225 – 10.9.7.23010.9.7.231
25410.9.7.232/2910.9.7.233 – 10.9.7.23810.9.7.239
25510.9.7.240/2910.9.7.241 – 10.9.7.24610.9.7.247
25610.9.7.248/2910.9.7.249 – 10.9.7.25410.9.7.255

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 →