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)10.6.16.0/21
network10.6.16.0/21
broadcast10.6.23.255
first host10.6.16.1
last host10.6.23.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.6.16.0/21
address00001010.00000110.00010000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000110.00010000.00000000
broadcast00001010.00000110.00010111.11111111
green = network part, grey = host part
hex0x0a061000
decimal168169472
reverse dns0.16.6.10.in-addr.arpa
ipv4-mapped::ffff:a06:1000

/21 split into /30 · 512 subnets

close ×
#networkhost rangebroadcast
110.6.16.0/3010.6.16.1 – 10.6.16.210.6.16.3
210.6.16.4/3010.6.16.5 – 10.6.16.610.6.16.7
310.6.16.8/3010.6.16.9 – 10.6.16.1010.6.16.11
410.6.16.12/3010.6.16.13 – 10.6.16.1410.6.16.15
510.6.16.16/3010.6.16.17 – 10.6.16.1810.6.16.19
610.6.16.20/3010.6.16.21 – 10.6.16.2210.6.16.23
710.6.16.24/3010.6.16.25 – 10.6.16.2610.6.16.27
810.6.16.28/3010.6.16.29 – 10.6.16.3010.6.16.31
910.6.16.32/3010.6.16.33 – 10.6.16.3410.6.16.35
1010.6.16.36/3010.6.16.37 – 10.6.16.3810.6.16.39
1110.6.16.40/3010.6.16.41 – 10.6.16.4210.6.16.43
1210.6.16.44/3010.6.16.45 – 10.6.16.4610.6.16.47
1310.6.16.48/3010.6.16.49 – 10.6.16.5010.6.16.51
1410.6.16.52/3010.6.16.53 – 10.6.16.5410.6.16.55
1510.6.16.56/3010.6.16.57 – 10.6.16.5810.6.16.59
1610.6.16.60/3010.6.16.61 – 10.6.16.6210.6.16.63
1710.6.16.64/3010.6.16.65 – 10.6.16.6610.6.16.67
1810.6.16.68/3010.6.16.69 – 10.6.16.7010.6.16.71
1910.6.16.72/3010.6.16.73 – 10.6.16.7410.6.16.75
2010.6.16.76/3010.6.16.77 – 10.6.16.7810.6.16.79
2110.6.16.80/3010.6.16.81 – 10.6.16.8210.6.16.83
2210.6.16.84/3010.6.16.85 – 10.6.16.8610.6.16.87
2310.6.16.88/3010.6.16.89 – 10.6.16.9010.6.16.91
2410.6.16.92/3010.6.16.93 – 10.6.16.9410.6.16.95
2510.6.16.96/3010.6.16.97 – 10.6.16.9810.6.16.99
2610.6.16.100/3010.6.16.101 – 10.6.16.10210.6.16.103
2710.6.16.104/3010.6.16.105 – 10.6.16.10610.6.16.107
2810.6.16.108/3010.6.16.109 – 10.6.16.11010.6.16.111
2910.6.16.112/3010.6.16.113 – 10.6.16.11410.6.16.115
3010.6.16.116/3010.6.16.117 – 10.6.16.11810.6.16.119
3110.6.16.120/3010.6.16.121 – 10.6.16.12210.6.16.123
3210.6.16.124/3010.6.16.125 – 10.6.16.12610.6.16.127
3310.6.16.128/3010.6.16.129 – 10.6.16.13010.6.16.131
3410.6.16.132/3010.6.16.133 – 10.6.16.13410.6.16.135
3510.6.16.136/3010.6.16.137 – 10.6.16.13810.6.16.139
3610.6.16.140/3010.6.16.141 – 10.6.16.14210.6.16.143
3710.6.16.144/3010.6.16.145 – 10.6.16.14610.6.16.147
3810.6.16.148/3010.6.16.149 – 10.6.16.15010.6.16.151
3910.6.16.152/3010.6.16.153 – 10.6.16.15410.6.16.155
4010.6.16.156/3010.6.16.157 – 10.6.16.15810.6.16.159
4110.6.16.160/3010.6.16.161 – 10.6.16.16210.6.16.163
4210.6.16.164/3010.6.16.165 – 10.6.16.16610.6.16.167
4310.6.16.168/3010.6.16.169 – 10.6.16.17010.6.16.171
4410.6.16.172/3010.6.16.173 – 10.6.16.17410.6.16.175
4510.6.16.176/3010.6.16.177 – 10.6.16.17810.6.16.179
4610.6.16.180/3010.6.16.181 – 10.6.16.18210.6.16.183
4710.6.16.184/3010.6.16.185 – 10.6.16.18610.6.16.187
4810.6.16.188/3010.6.16.189 – 10.6.16.19010.6.16.191
4910.6.16.192/3010.6.16.193 – 10.6.16.19410.6.16.195
5010.6.16.196/3010.6.16.197 – 10.6.16.19810.6.16.199
5110.6.16.200/3010.6.16.201 – 10.6.16.20210.6.16.203
5210.6.16.204/3010.6.16.205 – 10.6.16.20610.6.16.207
5310.6.16.208/3010.6.16.209 – 10.6.16.21010.6.16.211
5410.6.16.212/3010.6.16.213 – 10.6.16.21410.6.16.215
5510.6.16.216/3010.6.16.217 – 10.6.16.21810.6.16.219
5610.6.16.220/3010.6.16.221 – 10.6.16.22210.6.16.223
5710.6.16.224/3010.6.16.225 – 10.6.16.22610.6.16.227
5810.6.16.228/3010.6.16.229 – 10.6.16.23010.6.16.231
5910.6.16.232/3010.6.16.233 – 10.6.16.23410.6.16.235
6010.6.16.236/3010.6.16.237 – 10.6.16.23810.6.16.239
6110.6.16.240/3010.6.16.241 – 10.6.16.24210.6.16.243
6210.6.16.244/3010.6.16.245 – 10.6.16.24610.6.16.247
6310.6.16.248/3010.6.16.249 – 10.6.16.25010.6.16.251
6410.6.16.252/3010.6.16.253 – 10.6.16.25410.6.16.255
6510.6.17.0/3010.6.17.1 – 10.6.17.210.6.17.3
6610.6.17.4/3010.6.17.5 – 10.6.17.610.6.17.7
6710.6.17.8/3010.6.17.9 – 10.6.17.1010.6.17.11
6810.6.17.12/3010.6.17.13 – 10.6.17.1410.6.17.15
6910.6.17.16/3010.6.17.17 – 10.6.17.1810.6.17.19
7010.6.17.20/3010.6.17.21 – 10.6.17.2210.6.17.23
7110.6.17.24/3010.6.17.25 – 10.6.17.2610.6.17.27
7210.6.17.28/3010.6.17.29 – 10.6.17.3010.6.17.31
7310.6.17.32/3010.6.17.33 – 10.6.17.3410.6.17.35
7410.6.17.36/3010.6.17.37 – 10.6.17.3810.6.17.39
7510.6.17.40/3010.6.17.41 – 10.6.17.4210.6.17.43
7610.6.17.44/3010.6.17.45 – 10.6.17.4610.6.17.47
7710.6.17.48/3010.6.17.49 – 10.6.17.5010.6.17.51
7810.6.17.52/3010.6.17.53 – 10.6.17.5410.6.17.55
7910.6.17.56/3010.6.17.57 – 10.6.17.5810.6.17.59
8010.6.17.60/3010.6.17.61 – 10.6.17.6210.6.17.63
8110.6.17.64/3010.6.17.65 – 10.6.17.6610.6.17.67
8210.6.17.68/3010.6.17.69 – 10.6.17.7010.6.17.71
8310.6.17.72/3010.6.17.73 – 10.6.17.7410.6.17.75
8410.6.17.76/3010.6.17.77 – 10.6.17.7810.6.17.79
8510.6.17.80/3010.6.17.81 – 10.6.17.8210.6.17.83
8610.6.17.84/3010.6.17.85 – 10.6.17.8610.6.17.87
8710.6.17.88/3010.6.17.89 – 10.6.17.9010.6.17.91
8810.6.17.92/3010.6.17.93 – 10.6.17.9410.6.17.95
8910.6.17.96/3010.6.17.97 – 10.6.17.9810.6.17.99
9010.6.17.100/3010.6.17.101 – 10.6.17.10210.6.17.103
9110.6.17.104/3010.6.17.105 – 10.6.17.10610.6.17.107
9210.6.17.108/3010.6.17.109 – 10.6.17.11010.6.17.111
9310.6.17.112/3010.6.17.113 – 10.6.17.11410.6.17.115
9410.6.17.116/3010.6.17.117 – 10.6.17.11810.6.17.119
9510.6.17.120/3010.6.17.121 – 10.6.17.12210.6.17.123
9610.6.17.124/3010.6.17.125 – 10.6.17.12610.6.17.127
9710.6.17.128/3010.6.17.129 – 10.6.17.13010.6.17.131
9810.6.17.132/3010.6.17.133 – 10.6.17.13410.6.17.135
9910.6.17.136/3010.6.17.137 – 10.6.17.13810.6.17.139
10010.6.17.140/3010.6.17.141 – 10.6.17.14210.6.17.143
10110.6.17.144/3010.6.17.145 – 10.6.17.14610.6.17.147
10210.6.17.148/3010.6.17.149 – 10.6.17.15010.6.17.151
10310.6.17.152/3010.6.17.153 – 10.6.17.15410.6.17.155
10410.6.17.156/3010.6.17.157 – 10.6.17.15810.6.17.159
10510.6.17.160/3010.6.17.161 – 10.6.17.16210.6.17.163
10610.6.17.164/3010.6.17.165 – 10.6.17.16610.6.17.167
10710.6.17.168/3010.6.17.169 – 10.6.17.17010.6.17.171
10810.6.17.172/3010.6.17.173 – 10.6.17.17410.6.17.175
10910.6.17.176/3010.6.17.177 – 10.6.17.17810.6.17.179
11010.6.17.180/3010.6.17.181 – 10.6.17.18210.6.17.183
11110.6.17.184/3010.6.17.185 – 10.6.17.18610.6.17.187
11210.6.17.188/3010.6.17.189 – 10.6.17.19010.6.17.191
11310.6.17.192/3010.6.17.193 – 10.6.17.19410.6.17.195
11410.6.17.196/3010.6.17.197 – 10.6.17.19810.6.17.199
11510.6.17.200/3010.6.17.201 – 10.6.17.20210.6.17.203
11610.6.17.204/3010.6.17.205 – 10.6.17.20610.6.17.207
11710.6.17.208/3010.6.17.209 – 10.6.17.21010.6.17.211
11810.6.17.212/3010.6.17.213 – 10.6.17.21410.6.17.215
11910.6.17.216/3010.6.17.217 – 10.6.17.21810.6.17.219
12010.6.17.220/3010.6.17.221 – 10.6.17.22210.6.17.223
12110.6.17.224/3010.6.17.225 – 10.6.17.22610.6.17.227
12210.6.17.228/3010.6.17.229 – 10.6.17.23010.6.17.231
12310.6.17.232/3010.6.17.233 – 10.6.17.23410.6.17.235
12410.6.17.236/3010.6.17.237 – 10.6.17.23810.6.17.239
12510.6.17.240/3010.6.17.241 – 10.6.17.24210.6.17.243
12610.6.17.244/3010.6.17.245 – 10.6.17.24610.6.17.247
12710.6.17.248/3010.6.17.249 – 10.6.17.25010.6.17.251
12810.6.17.252/3010.6.17.253 – 10.6.17.25410.6.17.255
12910.6.18.0/3010.6.18.1 – 10.6.18.210.6.18.3
13010.6.18.4/3010.6.18.5 – 10.6.18.610.6.18.7
13110.6.18.8/3010.6.18.9 – 10.6.18.1010.6.18.11
13210.6.18.12/3010.6.18.13 – 10.6.18.1410.6.18.15
13310.6.18.16/3010.6.18.17 – 10.6.18.1810.6.18.19
13410.6.18.20/3010.6.18.21 – 10.6.18.2210.6.18.23
13510.6.18.24/3010.6.18.25 – 10.6.18.2610.6.18.27
13610.6.18.28/3010.6.18.29 – 10.6.18.3010.6.18.31
13710.6.18.32/3010.6.18.33 – 10.6.18.3410.6.18.35
13810.6.18.36/3010.6.18.37 – 10.6.18.3810.6.18.39
13910.6.18.40/3010.6.18.41 – 10.6.18.4210.6.18.43
14010.6.18.44/3010.6.18.45 – 10.6.18.4610.6.18.47
14110.6.18.48/3010.6.18.49 – 10.6.18.5010.6.18.51
14210.6.18.52/3010.6.18.53 – 10.6.18.5410.6.18.55
14310.6.18.56/3010.6.18.57 – 10.6.18.5810.6.18.59
14410.6.18.60/3010.6.18.61 – 10.6.18.6210.6.18.63
14510.6.18.64/3010.6.18.65 – 10.6.18.6610.6.18.67
14610.6.18.68/3010.6.18.69 – 10.6.18.7010.6.18.71
14710.6.18.72/3010.6.18.73 – 10.6.18.7410.6.18.75
14810.6.18.76/3010.6.18.77 – 10.6.18.7810.6.18.79
14910.6.18.80/3010.6.18.81 – 10.6.18.8210.6.18.83
15010.6.18.84/3010.6.18.85 – 10.6.18.8610.6.18.87
15110.6.18.88/3010.6.18.89 – 10.6.18.9010.6.18.91
15210.6.18.92/3010.6.18.93 – 10.6.18.9410.6.18.95
15310.6.18.96/3010.6.18.97 – 10.6.18.9810.6.18.99
15410.6.18.100/3010.6.18.101 – 10.6.18.10210.6.18.103
15510.6.18.104/3010.6.18.105 – 10.6.18.10610.6.18.107
15610.6.18.108/3010.6.18.109 – 10.6.18.11010.6.18.111
15710.6.18.112/3010.6.18.113 – 10.6.18.11410.6.18.115
15810.6.18.116/3010.6.18.117 – 10.6.18.11810.6.18.119
15910.6.18.120/3010.6.18.121 – 10.6.18.12210.6.18.123
16010.6.18.124/3010.6.18.125 – 10.6.18.12610.6.18.127
16110.6.18.128/3010.6.18.129 – 10.6.18.13010.6.18.131
16210.6.18.132/3010.6.18.133 – 10.6.18.13410.6.18.135
16310.6.18.136/3010.6.18.137 – 10.6.18.13810.6.18.139
16410.6.18.140/3010.6.18.141 – 10.6.18.14210.6.18.143
16510.6.18.144/3010.6.18.145 – 10.6.18.14610.6.18.147
16610.6.18.148/3010.6.18.149 – 10.6.18.15010.6.18.151
16710.6.18.152/3010.6.18.153 – 10.6.18.15410.6.18.155
16810.6.18.156/3010.6.18.157 – 10.6.18.15810.6.18.159
16910.6.18.160/3010.6.18.161 – 10.6.18.16210.6.18.163
17010.6.18.164/3010.6.18.165 – 10.6.18.16610.6.18.167
17110.6.18.168/3010.6.18.169 – 10.6.18.17010.6.18.171
17210.6.18.172/3010.6.18.173 – 10.6.18.17410.6.18.175
17310.6.18.176/3010.6.18.177 – 10.6.18.17810.6.18.179
17410.6.18.180/3010.6.18.181 – 10.6.18.18210.6.18.183
17510.6.18.184/3010.6.18.185 – 10.6.18.18610.6.18.187
17610.6.18.188/3010.6.18.189 – 10.6.18.19010.6.18.191
17710.6.18.192/3010.6.18.193 – 10.6.18.19410.6.18.195
17810.6.18.196/3010.6.18.197 – 10.6.18.19810.6.18.199
17910.6.18.200/3010.6.18.201 – 10.6.18.20210.6.18.203
18010.6.18.204/3010.6.18.205 – 10.6.18.20610.6.18.207
18110.6.18.208/3010.6.18.209 – 10.6.18.21010.6.18.211
18210.6.18.212/3010.6.18.213 – 10.6.18.21410.6.18.215
18310.6.18.216/3010.6.18.217 – 10.6.18.21810.6.18.219
18410.6.18.220/3010.6.18.221 – 10.6.18.22210.6.18.223
18510.6.18.224/3010.6.18.225 – 10.6.18.22610.6.18.227
18610.6.18.228/3010.6.18.229 – 10.6.18.23010.6.18.231
18710.6.18.232/3010.6.18.233 – 10.6.18.23410.6.18.235
18810.6.18.236/3010.6.18.237 – 10.6.18.23810.6.18.239
18910.6.18.240/3010.6.18.241 – 10.6.18.24210.6.18.243
19010.6.18.244/3010.6.18.245 – 10.6.18.24610.6.18.247
19110.6.18.248/3010.6.18.249 – 10.6.18.25010.6.18.251
19210.6.18.252/3010.6.18.253 – 10.6.18.25410.6.18.255
19310.6.19.0/3010.6.19.1 – 10.6.19.210.6.19.3
19410.6.19.4/3010.6.19.5 – 10.6.19.610.6.19.7
19510.6.19.8/3010.6.19.9 – 10.6.19.1010.6.19.11
19610.6.19.12/3010.6.19.13 – 10.6.19.1410.6.19.15
19710.6.19.16/3010.6.19.17 – 10.6.19.1810.6.19.19
19810.6.19.20/3010.6.19.21 – 10.6.19.2210.6.19.23
19910.6.19.24/3010.6.19.25 – 10.6.19.2610.6.19.27
20010.6.19.28/3010.6.19.29 – 10.6.19.3010.6.19.31
20110.6.19.32/3010.6.19.33 – 10.6.19.3410.6.19.35
20210.6.19.36/3010.6.19.37 – 10.6.19.3810.6.19.39
20310.6.19.40/3010.6.19.41 – 10.6.19.4210.6.19.43
20410.6.19.44/3010.6.19.45 – 10.6.19.4610.6.19.47
20510.6.19.48/3010.6.19.49 – 10.6.19.5010.6.19.51
20610.6.19.52/3010.6.19.53 – 10.6.19.5410.6.19.55
20710.6.19.56/3010.6.19.57 – 10.6.19.5810.6.19.59
20810.6.19.60/3010.6.19.61 – 10.6.19.6210.6.19.63
20910.6.19.64/3010.6.19.65 – 10.6.19.6610.6.19.67
21010.6.19.68/3010.6.19.69 – 10.6.19.7010.6.19.71
21110.6.19.72/3010.6.19.73 – 10.6.19.7410.6.19.75
21210.6.19.76/3010.6.19.77 – 10.6.19.7810.6.19.79
21310.6.19.80/3010.6.19.81 – 10.6.19.8210.6.19.83
21410.6.19.84/3010.6.19.85 – 10.6.19.8610.6.19.87
21510.6.19.88/3010.6.19.89 – 10.6.19.9010.6.19.91
21610.6.19.92/3010.6.19.93 – 10.6.19.9410.6.19.95
21710.6.19.96/3010.6.19.97 – 10.6.19.9810.6.19.99
21810.6.19.100/3010.6.19.101 – 10.6.19.10210.6.19.103
21910.6.19.104/3010.6.19.105 – 10.6.19.10610.6.19.107
22010.6.19.108/3010.6.19.109 – 10.6.19.11010.6.19.111
22110.6.19.112/3010.6.19.113 – 10.6.19.11410.6.19.115
22210.6.19.116/3010.6.19.117 – 10.6.19.11810.6.19.119
22310.6.19.120/3010.6.19.121 – 10.6.19.12210.6.19.123
22410.6.19.124/3010.6.19.125 – 10.6.19.12610.6.19.127
22510.6.19.128/3010.6.19.129 – 10.6.19.13010.6.19.131
22610.6.19.132/3010.6.19.133 – 10.6.19.13410.6.19.135
22710.6.19.136/3010.6.19.137 – 10.6.19.13810.6.19.139
22810.6.19.140/3010.6.19.141 – 10.6.19.14210.6.19.143
22910.6.19.144/3010.6.19.145 – 10.6.19.14610.6.19.147
23010.6.19.148/3010.6.19.149 – 10.6.19.15010.6.19.151
23110.6.19.152/3010.6.19.153 – 10.6.19.15410.6.19.155
23210.6.19.156/3010.6.19.157 – 10.6.19.15810.6.19.159
23310.6.19.160/3010.6.19.161 – 10.6.19.16210.6.19.163
23410.6.19.164/3010.6.19.165 – 10.6.19.16610.6.19.167
23510.6.19.168/3010.6.19.169 – 10.6.19.17010.6.19.171
23610.6.19.172/3010.6.19.173 – 10.6.19.17410.6.19.175
23710.6.19.176/3010.6.19.177 – 10.6.19.17810.6.19.179
23810.6.19.180/3010.6.19.181 – 10.6.19.18210.6.19.183
23910.6.19.184/3010.6.19.185 – 10.6.19.18610.6.19.187
24010.6.19.188/3010.6.19.189 – 10.6.19.19010.6.19.191
24110.6.19.192/3010.6.19.193 – 10.6.19.19410.6.19.195
24210.6.19.196/3010.6.19.197 – 10.6.19.19810.6.19.199
24310.6.19.200/3010.6.19.201 – 10.6.19.20210.6.19.203
24410.6.19.204/3010.6.19.205 – 10.6.19.20610.6.19.207
24510.6.19.208/3010.6.19.209 – 10.6.19.21010.6.19.211
24610.6.19.212/3010.6.19.213 – 10.6.19.21410.6.19.215
24710.6.19.216/3010.6.19.217 – 10.6.19.21810.6.19.219
24810.6.19.220/3010.6.19.221 – 10.6.19.22210.6.19.223
24910.6.19.224/3010.6.19.225 – 10.6.19.22610.6.19.227
25010.6.19.228/3010.6.19.229 – 10.6.19.23010.6.19.231
25110.6.19.232/3010.6.19.233 – 10.6.19.23410.6.19.235
25210.6.19.236/3010.6.19.237 – 10.6.19.23810.6.19.239
25310.6.19.240/3010.6.19.241 – 10.6.19.24210.6.19.243
25410.6.19.244/3010.6.19.245 – 10.6.19.24610.6.19.247
25510.6.19.248/3010.6.19.249 – 10.6.19.25010.6.19.251
25610.6.19.252/3010.6.19.253 – 10.6.19.25410.6.19.255

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 /21
/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-
/20255.255.240.04,0964,094-
/21255.255.248.02,0482,0461
/22255.255.252.01,0241,0222 split →
/23255.255.254.05125104 split →
/24255.255.255.02562548 split →
/25255.255.255.12812812616 split →
/26255.255.255.192646232 split →
/27255.255.255.224323064 split →
/28255.255.255.2401614128 split →
/29255.255.255.24886256 split →
/30255.255.255.25242512 split →
/31255.255.255.254221,024 split →
/32255.255.255.255112,048 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 →