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)10.4.208.0/20
network10.4.208.0/20
broadcast10.4.223.255
first host10.4.208.1
last host10.4.223.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.4.208.0/20
address00001010.00000100.11010000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00000100.11010000.00000000
broadcast00001010.00000100.11011111.11111111
green = network part, grey = host part
hex0x0a04d000
decimal168087552
reverse dns0.208.4.10.in-addr.arpa
ipv4-mapped::ffff:a04:d000

/20 split into /30 · 1,024 subnets

close ×
#networkhost rangebroadcast
110.4.208.0/3010.4.208.1 – 10.4.208.210.4.208.3
210.4.208.4/3010.4.208.5 – 10.4.208.610.4.208.7
310.4.208.8/3010.4.208.9 – 10.4.208.1010.4.208.11
410.4.208.12/3010.4.208.13 – 10.4.208.1410.4.208.15
510.4.208.16/3010.4.208.17 – 10.4.208.1810.4.208.19
610.4.208.20/3010.4.208.21 – 10.4.208.2210.4.208.23
710.4.208.24/3010.4.208.25 – 10.4.208.2610.4.208.27
810.4.208.28/3010.4.208.29 – 10.4.208.3010.4.208.31
910.4.208.32/3010.4.208.33 – 10.4.208.3410.4.208.35
1010.4.208.36/3010.4.208.37 – 10.4.208.3810.4.208.39
1110.4.208.40/3010.4.208.41 – 10.4.208.4210.4.208.43
1210.4.208.44/3010.4.208.45 – 10.4.208.4610.4.208.47
1310.4.208.48/3010.4.208.49 – 10.4.208.5010.4.208.51
1410.4.208.52/3010.4.208.53 – 10.4.208.5410.4.208.55
1510.4.208.56/3010.4.208.57 – 10.4.208.5810.4.208.59
1610.4.208.60/3010.4.208.61 – 10.4.208.6210.4.208.63
1710.4.208.64/3010.4.208.65 – 10.4.208.6610.4.208.67
1810.4.208.68/3010.4.208.69 – 10.4.208.7010.4.208.71
1910.4.208.72/3010.4.208.73 – 10.4.208.7410.4.208.75
2010.4.208.76/3010.4.208.77 – 10.4.208.7810.4.208.79
2110.4.208.80/3010.4.208.81 – 10.4.208.8210.4.208.83
2210.4.208.84/3010.4.208.85 – 10.4.208.8610.4.208.87
2310.4.208.88/3010.4.208.89 – 10.4.208.9010.4.208.91
2410.4.208.92/3010.4.208.93 – 10.4.208.9410.4.208.95
2510.4.208.96/3010.4.208.97 – 10.4.208.9810.4.208.99
2610.4.208.100/3010.4.208.101 – 10.4.208.10210.4.208.103
2710.4.208.104/3010.4.208.105 – 10.4.208.10610.4.208.107
2810.4.208.108/3010.4.208.109 – 10.4.208.11010.4.208.111
2910.4.208.112/3010.4.208.113 – 10.4.208.11410.4.208.115
3010.4.208.116/3010.4.208.117 – 10.4.208.11810.4.208.119
3110.4.208.120/3010.4.208.121 – 10.4.208.12210.4.208.123
3210.4.208.124/3010.4.208.125 – 10.4.208.12610.4.208.127
3310.4.208.128/3010.4.208.129 – 10.4.208.13010.4.208.131
3410.4.208.132/3010.4.208.133 – 10.4.208.13410.4.208.135
3510.4.208.136/3010.4.208.137 – 10.4.208.13810.4.208.139
3610.4.208.140/3010.4.208.141 – 10.4.208.14210.4.208.143
3710.4.208.144/3010.4.208.145 – 10.4.208.14610.4.208.147
3810.4.208.148/3010.4.208.149 – 10.4.208.15010.4.208.151
3910.4.208.152/3010.4.208.153 – 10.4.208.15410.4.208.155
4010.4.208.156/3010.4.208.157 – 10.4.208.15810.4.208.159
4110.4.208.160/3010.4.208.161 – 10.4.208.16210.4.208.163
4210.4.208.164/3010.4.208.165 – 10.4.208.16610.4.208.167
4310.4.208.168/3010.4.208.169 – 10.4.208.17010.4.208.171
4410.4.208.172/3010.4.208.173 – 10.4.208.17410.4.208.175
4510.4.208.176/3010.4.208.177 – 10.4.208.17810.4.208.179
4610.4.208.180/3010.4.208.181 – 10.4.208.18210.4.208.183
4710.4.208.184/3010.4.208.185 – 10.4.208.18610.4.208.187
4810.4.208.188/3010.4.208.189 – 10.4.208.19010.4.208.191
4910.4.208.192/3010.4.208.193 – 10.4.208.19410.4.208.195
5010.4.208.196/3010.4.208.197 – 10.4.208.19810.4.208.199
5110.4.208.200/3010.4.208.201 – 10.4.208.20210.4.208.203
5210.4.208.204/3010.4.208.205 – 10.4.208.20610.4.208.207
5310.4.208.208/3010.4.208.209 – 10.4.208.21010.4.208.211
5410.4.208.212/3010.4.208.213 – 10.4.208.21410.4.208.215
5510.4.208.216/3010.4.208.217 – 10.4.208.21810.4.208.219
5610.4.208.220/3010.4.208.221 – 10.4.208.22210.4.208.223
5710.4.208.224/3010.4.208.225 – 10.4.208.22610.4.208.227
5810.4.208.228/3010.4.208.229 – 10.4.208.23010.4.208.231
5910.4.208.232/3010.4.208.233 – 10.4.208.23410.4.208.235
6010.4.208.236/3010.4.208.237 – 10.4.208.23810.4.208.239
6110.4.208.240/3010.4.208.241 – 10.4.208.24210.4.208.243
6210.4.208.244/3010.4.208.245 – 10.4.208.24610.4.208.247
6310.4.208.248/3010.4.208.249 – 10.4.208.25010.4.208.251
6410.4.208.252/3010.4.208.253 – 10.4.208.25410.4.208.255
6510.4.209.0/3010.4.209.1 – 10.4.209.210.4.209.3
6610.4.209.4/3010.4.209.5 – 10.4.209.610.4.209.7
6710.4.209.8/3010.4.209.9 – 10.4.209.1010.4.209.11
6810.4.209.12/3010.4.209.13 – 10.4.209.1410.4.209.15
6910.4.209.16/3010.4.209.17 – 10.4.209.1810.4.209.19
7010.4.209.20/3010.4.209.21 – 10.4.209.2210.4.209.23
7110.4.209.24/3010.4.209.25 – 10.4.209.2610.4.209.27
7210.4.209.28/3010.4.209.29 – 10.4.209.3010.4.209.31
7310.4.209.32/3010.4.209.33 – 10.4.209.3410.4.209.35
7410.4.209.36/3010.4.209.37 – 10.4.209.3810.4.209.39
7510.4.209.40/3010.4.209.41 – 10.4.209.4210.4.209.43
7610.4.209.44/3010.4.209.45 – 10.4.209.4610.4.209.47
7710.4.209.48/3010.4.209.49 – 10.4.209.5010.4.209.51
7810.4.209.52/3010.4.209.53 – 10.4.209.5410.4.209.55
7910.4.209.56/3010.4.209.57 – 10.4.209.5810.4.209.59
8010.4.209.60/3010.4.209.61 – 10.4.209.6210.4.209.63
8110.4.209.64/3010.4.209.65 – 10.4.209.6610.4.209.67
8210.4.209.68/3010.4.209.69 – 10.4.209.7010.4.209.71
8310.4.209.72/3010.4.209.73 – 10.4.209.7410.4.209.75
8410.4.209.76/3010.4.209.77 – 10.4.209.7810.4.209.79
8510.4.209.80/3010.4.209.81 – 10.4.209.8210.4.209.83
8610.4.209.84/3010.4.209.85 – 10.4.209.8610.4.209.87
8710.4.209.88/3010.4.209.89 – 10.4.209.9010.4.209.91
8810.4.209.92/3010.4.209.93 – 10.4.209.9410.4.209.95
8910.4.209.96/3010.4.209.97 – 10.4.209.9810.4.209.99
9010.4.209.100/3010.4.209.101 – 10.4.209.10210.4.209.103
9110.4.209.104/3010.4.209.105 – 10.4.209.10610.4.209.107
9210.4.209.108/3010.4.209.109 – 10.4.209.11010.4.209.111
9310.4.209.112/3010.4.209.113 – 10.4.209.11410.4.209.115
9410.4.209.116/3010.4.209.117 – 10.4.209.11810.4.209.119
9510.4.209.120/3010.4.209.121 – 10.4.209.12210.4.209.123
9610.4.209.124/3010.4.209.125 – 10.4.209.12610.4.209.127
9710.4.209.128/3010.4.209.129 – 10.4.209.13010.4.209.131
9810.4.209.132/3010.4.209.133 – 10.4.209.13410.4.209.135
9910.4.209.136/3010.4.209.137 – 10.4.209.13810.4.209.139
10010.4.209.140/3010.4.209.141 – 10.4.209.14210.4.209.143
10110.4.209.144/3010.4.209.145 – 10.4.209.14610.4.209.147
10210.4.209.148/3010.4.209.149 – 10.4.209.15010.4.209.151
10310.4.209.152/3010.4.209.153 – 10.4.209.15410.4.209.155
10410.4.209.156/3010.4.209.157 – 10.4.209.15810.4.209.159
10510.4.209.160/3010.4.209.161 – 10.4.209.16210.4.209.163
10610.4.209.164/3010.4.209.165 – 10.4.209.16610.4.209.167
10710.4.209.168/3010.4.209.169 – 10.4.209.17010.4.209.171
10810.4.209.172/3010.4.209.173 – 10.4.209.17410.4.209.175
10910.4.209.176/3010.4.209.177 – 10.4.209.17810.4.209.179
11010.4.209.180/3010.4.209.181 – 10.4.209.18210.4.209.183
11110.4.209.184/3010.4.209.185 – 10.4.209.18610.4.209.187
11210.4.209.188/3010.4.209.189 – 10.4.209.19010.4.209.191
11310.4.209.192/3010.4.209.193 – 10.4.209.19410.4.209.195
11410.4.209.196/3010.4.209.197 – 10.4.209.19810.4.209.199
11510.4.209.200/3010.4.209.201 – 10.4.209.20210.4.209.203
11610.4.209.204/3010.4.209.205 – 10.4.209.20610.4.209.207
11710.4.209.208/3010.4.209.209 – 10.4.209.21010.4.209.211
11810.4.209.212/3010.4.209.213 – 10.4.209.21410.4.209.215
11910.4.209.216/3010.4.209.217 – 10.4.209.21810.4.209.219
12010.4.209.220/3010.4.209.221 – 10.4.209.22210.4.209.223
12110.4.209.224/3010.4.209.225 – 10.4.209.22610.4.209.227
12210.4.209.228/3010.4.209.229 – 10.4.209.23010.4.209.231
12310.4.209.232/3010.4.209.233 – 10.4.209.23410.4.209.235
12410.4.209.236/3010.4.209.237 – 10.4.209.23810.4.209.239
12510.4.209.240/3010.4.209.241 – 10.4.209.24210.4.209.243
12610.4.209.244/3010.4.209.245 – 10.4.209.24610.4.209.247
12710.4.209.248/3010.4.209.249 – 10.4.209.25010.4.209.251
12810.4.209.252/3010.4.209.253 – 10.4.209.25410.4.209.255
12910.4.210.0/3010.4.210.1 – 10.4.210.210.4.210.3
13010.4.210.4/3010.4.210.5 – 10.4.210.610.4.210.7
13110.4.210.8/3010.4.210.9 – 10.4.210.1010.4.210.11
13210.4.210.12/3010.4.210.13 – 10.4.210.1410.4.210.15
13310.4.210.16/3010.4.210.17 – 10.4.210.1810.4.210.19
13410.4.210.20/3010.4.210.21 – 10.4.210.2210.4.210.23
13510.4.210.24/3010.4.210.25 – 10.4.210.2610.4.210.27
13610.4.210.28/3010.4.210.29 – 10.4.210.3010.4.210.31
13710.4.210.32/3010.4.210.33 – 10.4.210.3410.4.210.35
13810.4.210.36/3010.4.210.37 – 10.4.210.3810.4.210.39
13910.4.210.40/3010.4.210.41 – 10.4.210.4210.4.210.43
14010.4.210.44/3010.4.210.45 – 10.4.210.4610.4.210.47
14110.4.210.48/3010.4.210.49 – 10.4.210.5010.4.210.51
14210.4.210.52/3010.4.210.53 – 10.4.210.5410.4.210.55
14310.4.210.56/3010.4.210.57 – 10.4.210.5810.4.210.59
14410.4.210.60/3010.4.210.61 – 10.4.210.6210.4.210.63
14510.4.210.64/3010.4.210.65 – 10.4.210.6610.4.210.67
14610.4.210.68/3010.4.210.69 – 10.4.210.7010.4.210.71
14710.4.210.72/3010.4.210.73 – 10.4.210.7410.4.210.75
14810.4.210.76/3010.4.210.77 – 10.4.210.7810.4.210.79
14910.4.210.80/3010.4.210.81 – 10.4.210.8210.4.210.83
15010.4.210.84/3010.4.210.85 – 10.4.210.8610.4.210.87
15110.4.210.88/3010.4.210.89 – 10.4.210.9010.4.210.91
15210.4.210.92/3010.4.210.93 – 10.4.210.9410.4.210.95
15310.4.210.96/3010.4.210.97 – 10.4.210.9810.4.210.99
15410.4.210.100/3010.4.210.101 – 10.4.210.10210.4.210.103
15510.4.210.104/3010.4.210.105 – 10.4.210.10610.4.210.107
15610.4.210.108/3010.4.210.109 – 10.4.210.11010.4.210.111
15710.4.210.112/3010.4.210.113 – 10.4.210.11410.4.210.115
15810.4.210.116/3010.4.210.117 – 10.4.210.11810.4.210.119
15910.4.210.120/3010.4.210.121 – 10.4.210.12210.4.210.123
16010.4.210.124/3010.4.210.125 – 10.4.210.12610.4.210.127
16110.4.210.128/3010.4.210.129 – 10.4.210.13010.4.210.131
16210.4.210.132/3010.4.210.133 – 10.4.210.13410.4.210.135
16310.4.210.136/3010.4.210.137 – 10.4.210.13810.4.210.139
16410.4.210.140/3010.4.210.141 – 10.4.210.14210.4.210.143
16510.4.210.144/3010.4.210.145 – 10.4.210.14610.4.210.147
16610.4.210.148/3010.4.210.149 – 10.4.210.15010.4.210.151
16710.4.210.152/3010.4.210.153 – 10.4.210.15410.4.210.155
16810.4.210.156/3010.4.210.157 – 10.4.210.15810.4.210.159
16910.4.210.160/3010.4.210.161 – 10.4.210.16210.4.210.163
17010.4.210.164/3010.4.210.165 – 10.4.210.16610.4.210.167
17110.4.210.168/3010.4.210.169 – 10.4.210.17010.4.210.171
17210.4.210.172/3010.4.210.173 – 10.4.210.17410.4.210.175
17310.4.210.176/3010.4.210.177 – 10.4.210.17810.4.210.179
17410.4.210.180/3010.4.210.181 – 10.4.210.18210.4.210.183
17510.4.210.184/3010.4.210.185 – 10.4.210.18610.4.210.187
17610.4.210.188/3010.4.210.189 – 10.4.210.19010.4.210.191
17710.4.210.192/3010.4.210.193 – 10.4.210.19410.4.210.195
17810.4.210.196/3010.4.210.197 – 10.4.210.19810.4.210.199
17910.4.210.200/3010.4.210.201 – 10.4.210.20210.4.210.203
18010.4.210.204/3010.4.210.205 – 10.4.210.20610.4.210.207
18110.4.210.208/3010.4.210.209 – 10.4.210.21010.4.210.211
18210.4.210.212/3010.4.210.213 – 10.4.210.21410.4.210.215
18310.4.210.216/3010.4.210.217 – 10.4.210.21810.4.210.219
18410.4.210.220/3010.4.210.221 – 10.4.210.22210.4.210.223
18510.4.210.224/3010.4.210.225 – 10.4.210.22610.4.210.227
18610.4.210.228/3010.4.210.229 – 10.4.210.23010.4.210.231
18710.4.210.232/3010.4.210.233 – 10.4.210.23410.4.210.235
18810.4.210.236/3010.4.210.237 – 10.4.210.23810.4.210.239
18910.4.210.240/3010.4.210.241 – 10.4.210.24210.4.210.243
19010.4.210.244/3010.4.210.245 – 10.4.210.24610.4.210.247
19110.4.210.248/3010.4.210.249 – 10.4.210.25010.4.210.251
19210.4.210.252/3010.4.210.253 – 10.4.210.25410.4.210.255
19310.4.211.0/3010.4.211.1 – 10.4.211.210.4.211.3
19410.4.211.4/3010.4.211.5 – 10.4.211.610.4.211.7
19510.4.211.8/3010.4.211.9 – 10.4.211.1010.4.211.11
19610.4.211.12/3010.4.211.13 – 10.4.211.1410.4.211.15
19710.4.211.16/3010.4.211.17 – 10.4.211.1810.4.211.19
19810.4.211.20/3010.4.211.21 – 10.4.211.2210.4.211.23
19910.4.211.24/3010.4.211.25 – 10.4.211.2610.4.211.27
20010.4.211.28/3010.4.211.29 – 10.4.211.3010.4.211.31
20110.4.211.32/3010.4.211.33 – 10.4.211.3410.4.211.35
20210.4.211.36/3010.4.211.37 – 10.4.211.3810.4.211.39
20310.4.211.40/3010.4.211.41 – 10.4.211.4210.4.211.43
20410.4.211.44/3010.4.211.45 – 10.4.211.4610.4.211.47
20510.4.211.48/3010.4.211.49 – 10.4.211.5010.4.211.51
20610.4.211.52/3010.4.211.53 – 10.4.211.5410.4.211.55
20710.4.211.56/3010.4.211.57 – 10.4.211.5810.4.211.59
20810.4.211.60/3010.4.211.61 – 10.4.211.6210.4.211.63
20910.4.211.64/3010.4.211.65 – 10.4.211.6610.4.211.67
21010.4.211.68/3010.4.211.69 – 10.4.211.7010.4.211.71
21110.4.211.72/3010.4.211.73 – 10.4.211.7410.4.211.75
21210.4.211.76/3010.4.211.77 – 10.4.211.7810.4.211.79
21310.4.211.80/3010.4.211.81 – 10.4.211.8210.4.211.83
21410.4.211.84/3010.4.211.85 – 10.4.211.8610.4.211.87
21510.4.211.88/3010.4.211.89 – 10.4.211.9010.4.211.91
21610.4.211.92/3010.4.211.93 – 10.4.211.9410.4.211.95
21710.4.211.96/3010.4.211.97 – 10.4.211.9810.4.211.99
21810.4.211.100/3010.4.211.101 – 10.4.211.10210.4.211.103
21910.4.211.104/3010.4.211.105 – 10.4.211.10610.4.211.107
22010.4.211.108/3010.4.211.109 – 10.4.211.11010.4.211.111
22110.4.211.112/3010.4.211.113 – 10.4.211.11410.4.211.115
22210.4.211.116/3010.4.211.117 – 10.4.211.11810.4.211.119
22310.4.211.120/3010.4.211.121 – 10.4.211.12210.4.211.123
22410.4.211.124/3010.4.211.125 – 10.4.211.12610.4.211.127
22510.4.211.128/3010.4.211.129 – 10.4.211.13010.4.211.131
22610.4.211.132/3010.4.211.133 – 10.4.211.13410.4.211.135
22710.4.211.136/3010.4.211.137 – 10.4.211.13810.4.211.139
22810.4.211.140/3010.4.211.141 – 10.4.211.14210.4.211.143
22910.4.211.144/3010.4.211.145 – 10.4.211.14610.4.211.147
23010.4.211.148/3010.4.211.149 – 10.4.211.15010.4.211.151
23110.4.211.152/3010.4.211.153 – 10.4.211.15410.4.211.155
23210.4.211.156/3010.4.211.157 – 10.4.211.15810.4.211.159
23310.4.211.160/3010.4.211.161 – 10.4.211.16210.4.211.163
23410.4.211.164/3010.4.211.165 – 10.4.211.16610.4.211.167
23510.4.211.168/3010.4.211.169 – 10.4.211.17010.4.211.171
23610.4.211.172/3010.4.211.173 – 10.4.211.17410.4.211.175
23710.4.211.176/3010.4.211.177 – 10.4.211.17810.4.211.179
23810.4.211.180/3010.4.211.181 – 10.4.211.18210.4.211.183
23910.4.211.184/3010.4.211.185 – 10.4.211.18610.4.211.187
24010.4.211.188/3010.4.211.189 – 10.4.211.19010.4.211.191
24110.4.211.192/3010.4.211.193 – 10.4.211.19410.4.211.195
24210.4.211.196/3010.4.211.197 – 10.4.211.19810.4.211.199
24310.4.211.200/3010.4.211.201 – 10.4.211.20210.4.211.203
24410.4.211.204/3010.4.211.205 – 10.4.211.20610.4.211.207
24510.4.211.208/3010.4.211.209 – 10.4.211.21010.4.211.211
24610.4.211.212/3010.4.211.213 – 10.4.211.21410.4.211.215
24710.4.211.216/3010.4.211.217 – 10.4.211.21810.4.211.219
24810.4.211.220/3010.4.211.221 – 10.4.211.22210.4.211.223
24910.4.211.224/3010.4.211.225 – 10.4.211.22610.4.211.227
25010.4.211.228/3010.4.211.229 – 10.4.211.23010.4.211.231
25110.4.211.232/3010.4.211.233 – 10.4.211.23410.4.211.235
25210.4.211.236/3010.4.211.237 – 10.4.211.23810.4.211.239
25310.4.211.240/3010.4.211.241 – 10.4.211.24210.4.211.243
25410.4.211.244/3010.4.211.245 – 10.4.211.24610.4.211.247
25510.4.211.248/3010.4.211.249 – 10.4.211.25010.4.211.251
25610.4.211.252/3010.4.211.253 – 10.4.211.25410.4.211.255

showing 256 of 1,024

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 →