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)10.29.64.0/18
network10.29.64.0/18
broadcast10.29.127.255
first host10.29.64.1
last host10.29.127.254
subnet mask255.255.192.0
wildcard0.0.63.255
addresses16,384
usable hosts16,382
classA
ipcalc 10.29.64.0/18
address00001010.00011101.01000000.00000000
subnet mask11111111.11111111.11000000.00000000
network00001010.00011101.01000000.00000000
broadcast00001010.00011101.01111111.11111111
green = network part, grey = host part
hex0x0a1d4000
decimal169689088
reverse dns0.64.29.10.in-addr.arpa
ipv4-mapped::ffff:a1d:4000

/18 split into /30 · 4,096 subnets

close ×
#networkhost rangebroadcast
110.29.64.0/3010.29.64.1 – 10.29.64.210.29.64.3
210.29.64.4/3010.29.64.5 – 10.29.64.610.29.64.7
310.29.64.8/3010.29.64.9 – 10.29.64.1010.29.64.11
410.29.64.12/3010.29.64.13 – 10.29.64.1410.29.64.15
510.29.64.16/3010.29.64.17 – 10.29.64.1810.29.64.19
610.29.64.20/3010.29.64.21 – 10.29.64.2210.29.64.23
710.29.64.24/3010.29.64.25 – 10.29.64.2610.29.64.27
810.29.64.28/3010.29.64.29 – 10.29.64.3010.29.64.31
910.29.64.32/3010.29.64.33 – 10.29.64.3410.29.64.35
1010.29.64.36/3010.29.64.37 – 10.29.64.3810.29.64.39
1110.29.64.40/3010.29.64.41 – 10.29.64.4210.29.64.43
1210.29.64.44/3010.29.64.45 – 10.29.64.4610.29.64.47
1310.29.64.48/3010.29.64.49 – 10.29.64.5010.29.64.51
1410.29.64.52/3010.29.64.53 – 10.29.64.5410.29.64.55
1510.29.64.56/3010.29.64.57 – 10.29.64.5810.29.64.59
1610.29.64.60/3010.29.64.61 – 10.29.64.6210.29.64.63
1710.29.64.64/3010.29.64.65 – 10.29.64.6610.29.64.67
1810.29.64.68/3010.29.64.69 – 10.29.64.7010.29.64.71
1910.29.64.72/3010.29.64.73 – 10.29.64.7410.29.64.75
2010.29.64.76/3010.29.64.77 – 10.29.64.7810.29.64.79
2110.29.64.80/3010.29.64.81 – 10.29.64.8210.29.64.83
2210.29.64.84/3010.29.64.85 – 10.29.64.8610.29.64.87
2310.29.64.88/3010.29.64.89 – 10.29.64.9010.29.64.91
2410.29.64.92/3010.29.64.93 – 10.29.64.9410.29.64.95
2510.29.64.96/3010.29.64.97 – 10.29.64.9810.29.64.99
2610.29.64.100/3010.29.64.101 – 10.29.64.10210.29.64.103
2710.29.64.104/3010.29.64.105 – 10.29.64.10610.29.64.107
2810.29.64.108/3010.29.64.109 – 10.29.64.11010.29.64.111
2910.29.64.112/3010.29.64.113 – 10.29.64.11410.29.64.115
3010.29.64.116/3010.29.64.117 – 10.29.64.11810.29.64.119
3110.29.64.120/3010.29.64.121 – 10.29.64.12210.29.64.123
3210.29.64.124/3010.29.64.125 – 10.29.64.12610.29.64.127
3310.29.64.128/3010.29.64.129 – 10.29.64.13010.29.64.131
3410.29.64.132/3010.29.64.133 – 10.29.64.13410.29.64.135
3510.29.64.136/3010.29.64.137 – 10.29.64.13810.29.64.139
3610.29.64.140/3010.29.64.141 – 10.29.64.14210.29.64.143
3710.29.64.144/3010.29.64.145 – 10.29.64.14610.29.64.147
3810.29.64.148/3010.29.64.149 – 10.29.64.15010.29.64.151
3910.29.64.152/3010.29.64.153 – 10.29.64.15410.29.64.155
4010.29.64.156/3010.29.64.157 – 10.29.64.15810.29.64.159
4110.29.64.160/3010.29.64.161 – 10.29.64.16210.29.64.163
4210.29.64.164/3010.29.64.165 – 10.29.64.16610.29.64.167
4310.29.64.168/3010.29.64.169 – 10.29.64.17010.29.64.171
4410.29.64.172/3010.29.64.173 – 10.29.64.17410.29.64.175
4510.29.64.176/3010.29.64.177 – 10.29.64.17810.29.64.179
4610.29.64.180/3010.29.64.181 – 10.29.64.18210.29.64.183
4710.29.64.184/3010.29.64.185 – 10.29.64.18610.29.64.187
4810.29.64.188/3010.29.64.189 – 10.29.64.19010.29.64.191
4910.29.64.192/3010.29.64.193 – 10.29.64.19410.29.64.195
5010.29.64.196/3010.29.64.197 – 10.29.64.19810.29.64.199
5110.29.64.200/3010.29.64.201 – 10.29.64.20210.29.64.203
5210.29.64.204/3010.29.64.205 – 10.29.64.20610.29.64.207
5310.29.64.208/3010.29.64.209 – 10.29.64.21010.29.64.211
5410.29.64.212/3010.29.64.213 – 10.29.64.21410.29.64.215
5510.29.64.216/3010.29.64.217 – 10.29.64.21810.29.64.219
5610.29.64.220/3010.29.64.221 – 10.29.64.22210.29.64.223
5710.29.64.224/3010.29.64.225 – 10.29.64.22610.29.64.227
5810.29.64.228/3010.29.64.229 – 10.29.64.23010.29.64.231
5910.29.64.232/3010.29.64.233 – 10.29.64.23410.29.64.235
6010.29.64.236/3010.29.64.237 – 10.29.64.23810.29.64.239
6110.29.64.240/3010.29.64.241 – 10.29.64.24210.29.64.243
6210.29.64.244/3010.29.64.245 – 10.29.64.24610.29.64.247
6310.29.64.248/3010.29.64.249 – 10.29.64.25010.29.64.251
6410.29.64.252/3010.29.64.253 – 10.29.64.25410.29.64.255
6510.29.65.0/3010.29.65.1 – 10.29.65.210.29.65.3
6610.29.65.4/3010.29.65.5 – 10.29.65.610.29.65.7
6710.29.65.8/3010.29.65.9 – 10.29.65.1010.29.65.11
6810.29.65.12/3010.29.65.13 – 10.29.65.1410.29.65.15
6910.29.65.16/3010.29.65.17 – 10.29.65.1810.29.65.19
7010.29.65.20/3010.29.65.21 – 10.29.65.2210.29.65.23
7110.29.65.24/3010.29.65.25 – 10.29.65.2610.29.65.27
7210.29.65.28/3010.29.65.29 – 10.29.65.3010.29.65.31
7310.29.65.32/3010.29.65.33 – 10.29.65.3410.29.65.35
7410.29.65.36/3010.29.65.37 – 10.29.65.3810.29.65.39
7510.29.65.40/3010.29.65.41 – 10.29.65.4210.29.65.43
7610.29.65.44/3010.29.65.45 – 10.29.65.4610.29.65.47
7710.29.65.48/3010.29.65.49 – 10.29.65.5010.29.65.51
7810.29.65.52/3010.29.65.53 – 10.29.65.5410.29.65.55
7910.29.65.56/3010.29.65.57 – 10.29.65.5810.29.65.59
8010.29.65.60/3010.29.65.61 – 10.29.65.6210.29.65.63
8110.29.65.64/3010.29.65.65 – 10.29.65.6610.29.65.67
8210.29.65.68/3010.29.65.69 – 10.29.65.7010.29.65.71
8310.29.65.72/3010.29.65.73 – 10.29.65.7410.29.65.75
8410.29.65.76/3010.29.65.77 – 10.29.65.7810.29.65.79
8510.29.65.80/3010.29.65.81 – 10.29.65.8210.29.65.83
8610.29.65.84/3010.29.65.85 – 10.29.65.8610.29.65.87
8710.29.65.88/3010.29.65.89 – 10.29.65.9010.29.65.91
8810.29.65.92/3010.29.65.93 – 10.29.65.9410.29.65.95
8910.29.65.96/3010.29.65.97 – 10.29.65.9810.29.65.99
9010.29.65.100/3010.29.65.101 – 10.29.65.10210.29.65.103
9110.29.65.104/3010.29.65.105 – 10.29.65.10610.29.65.107
9210.29.65.108/3010.29.65.109 – 10.29.65.11010.29.65.111
9310.29.65.112/3010.29.65.113 – 10.29.65.11410.29.65.115
9410.29.65.116/3010.29.65.117 – 10.29.65.11810.29.65.119
9510.29.65.120/3010.29.65.121 – 10.29.65.12210.29.65.123
9610.29.65.124/3010.29.65.125 – 10.29.65.12610.29.65.127
9710.29.65.128/3010.29.65.129 – 10.29.65.13010.29.65.131
9810.29.65.132/3010.29.65.133 – 10.29.65.13410.29.65.135
9910.29.65.136/3010.29.65.137 – 10.29.65.13810.29.65.139
10010.29.65.140/3010.29.65.141 – 10.29.65.14210.29.65.143
10110.29.65.144/3010.29.65.145 – 10.29.65.14610.29.65.147
10210.29.65.148/3010.29.65.149 – 10.29.65.15010.29.65.151
10310.29.65.152/3010.29.65.153 – 10.29.65.15410.29.65.155
10410.29.65.156/3010.29.65.157 – 10.29.65.15810.29.65.159
10510.29.65.160/3010.29.65.161 – 10.29.65.16210.29.65.163
10610.29.65.164/3010.29.65.165 – 10.29.65.16610.29.65.167
10710.29.65.168/3010.29.65.169 – 10.29.65.17010.29.65.171
10810.29.65.172/3010.29.65.173 – 10.29.65.17410.29.65.175
10910.29.65.176/3010.29.65.177 – 10.29.65.17810.29.65.179
11010.29.65.180/3010.29.65.181 – 10.29.65.18210.29.65.183
11110.29.65.184/3010.29.65.185 – 10.29.65.18610.29.65.187
11210.29.65.188/3010.29.65.189 – 10.29.65.19010.29.65.191
11310.29.65.192/3010.29.65.193 – 10.29.65.19410.29.65.195
11410.29.65.196/3010.29.65.197 – 10.29.65.19810.29.65.199
11510.29.65.200/3010.29.65.201 – 10.29.65.20210.29.65.203
11610.29.65.204/3010.29.65.205 – 10.29.65.20610.29.65.207
11710.29.65.208/3010.29.65.209 – 10.29.65.21010.29.65.211
11810.29.65.212/3010.29.65.213 – 10.29.65.21410.29.65.215
11910.29.65.216/3010.29.65.217 – 10.29.65.21810.29.65.219
12010.29.65.220/3010.29.65.221 – 10.29.65.22210.29.65.223
12110.29.65.224/3010.29.65.225 – 10.29.65.22610.29.65.227
12210.29.65.228/3010.29.65.229 – 10.29.65.23010.29.65.231
12310.29.65.232/3010.29.65.233 – 10.29.65.23410.29.65.235
12410.29.65.236/3010.29.65.237 – 10.29.65.23810.29.65.239
12510.29.65.240/3010.29.65.241 – 10.29.65.24210.29.65.243
12610.29.65.244/3010.29.65.245 – 10.29.65.24610.29.65.247
12710.29.65.248/3010.29.65.249 – 10.29.65.25010.29.65.251
12810.29.65.252/3010.29.65.253 – 10.29.65.25410.29.65.255
12910.29.66.0/3010.29.66.1 – 10.29.66.210.29.66.3
13010.29.66.4/3010.29.66.5 – 10.29.66.610.29.66.7
13110.29.66.8/3010.29.66.9 – 10.29.66.1010.29.66.11
13210.29.66.12/3010.29.66.13 – 10.29.66.1410.29.66.15
13310.29.66.16/3010.29.66.17 – 10.29.66.1810.29.66.19
13410.29.66.20/3010.29.66.21 – 10.29.66.2210.29.66.23
13510.29.66.24/3010.29.66.25 – 10.29.66.2610.29.66.27
13610.29.66.28/3010.29.66.29 – 10.29.66.3010.29.66.31
13710.29.66.32/3010.29.66.33 – 10.29.66.3410.29.66.35
13810.29.66.36/3010.29.66.37 – 10.29.66.3810.29.66.39
13910.29.66.40/3010.29.66.41 – 10.29.66.4210.29.66.43
14010.29.66.44/3010.29.66.45 – 10.29.66.4610.29.66.47
14110.29.66.48/3010.29.66.49 – 10.29.66.5010.29.66.51
14210.29.66.52/3010.29.66.53 – 10.29.66.5410.29.66.55
14310.29.66.56/3010.29.66.57 – 10.29.66.5810.29.66.59
14410.29.66.60/3010.29.66.61 – 10.29.66.6210.29.66.63
14510.29.66.64/3010.29.66.65 – 10.29.66.6610.29.66.67
14610.29.66.68/3010.29.66.69 – 10.29.66.7010.29.66.71
14710.29.66.72/3010.29.66.73 – 10.29.66.7410.29.66.75
14810.29.66.76/3010.29.66.77 – 10.29.66.7810.29.66.79
14910.29.66.80/3010.29.66.81 – 10.29.66.8210.29.66.83
15010.29.66.84/3010.29.66.85 – 10.29.66.8610.29.66.87
15110.29.66.88/3010.29.66.89 – 10.29.66.9010.29.66.91
15210.29.66.92/3010.29.66.93 – 10.29.66.9410.29.66.95
15310.29.66.96/3010.29.66.97 – 10.29.66.9810.29.66.99
15410.29.66.100/3010.29.66.101 – 10.29.66.10210.29.66.103
15510.29.66.104/3010.29.66.105 – 10.29.66.10610.29.66.107
15610.29.66.108/3010.29.66.109 – 10.29.66.11010.29.66.111
15710.29.66.112/3010.29.66.113 – 10.29.66.11410.29.66.115
15810.29.66.116/3010.29.66.117 – 10.29.66.11810.29.66.119
15910.29.66.120/3010.29.66.121 – 10.29.66.12210.29.66.123
16010.29.66.124/3010.29.66.125 – 10.29.66.12610.29.66.127
16110.29.66.128/3010.29.66.129 – 10.29.66.13010.29.66.131
16210.29.66.132/3010.29.66.133 – 10.29.66.13410.29.66.135
16310.29.66.136/3010.29.66.137 – 10.29.66.13810.29.66.139
16410.29.66.140/3010.29.66.141 – 10.29.66.14210.29.66.143
16510.29.66.144/3010.29.66.145 – 10.29.66.14610.29.66.147
16610.29.66.148/3010.29.66.149 – 10.29.66.15010.29.66.151
16710.29.66.152/3010.29.66.153 – 10.29.66.15410.29.66.155
16810.29.66.156/3010.29.66.157 – 10.29.66.15810.29.66.159
16910.29.66.160/3010.29.66.161 – 10.29.66.16210.29.66.163
17010.29.66.164/3010.29.66.165 – 10.29.66.16610.29.66.167
17110.29.66.168/3010.29.66.169 – 10.29.66.17010.29.66.171
17210.29.66.172/3010.29.66.173 – 10.29.66.17410.29.66.175
17310.29.66.176/3010.29.66.177 – 10.29.66.17810.29.66.179
17410.29.66.180/3010.29.66.181 – 10.29.66.18210.29.66.183
17510.29.66.184/3010.29.66.185 – 10.29.66.18610.29.66.187
17610.29.66.188/3010.29.66.189 – 10.29.66.19010.29.66.191
17710.29.66.192/3010.29.66.193 – 10.29.66.19410.29.66.195
17810.29.66.196/3010.29.66.197 – 10.29.66.19810.29.66.199
17910.29.66.200/3010.29.66.201 – 10.29.66.20210.29.66.203
18010.29.66.204/3010.29.66.205 – 10.29.66.20610.29.66.207
18110.29.66.208/3010.29.66.209 – 10.29.66.21010.29.66.211
18210.29.66.212/3010.29.66.213 – 10.29.66.21410.29.66.215
18310.29.66.216/3010.29.66.217 – 10.29.66.21810.29.66.219
18410.29.66.220/3010.29.66.221 – 10.29.66.22210.29.66.223
18510.29.66.224/3010.29.66.225 – 10.29.66.22610.29.66.227
18610.29.66.228/3010.29.66.229 – 10.29.66.23010.29.66.231
18710.29.66.232/3010.29.66.233 – 10.29.66.23410.29.66.235
18810.29.66.236/3010.29.66.237 – 10.29.66.23810.29.66.239
18910.29.66.240/3010.29.66.241 – 10.29.66.24210.29.66.243
19010.29.66.244/3010.29.66.245 – 10.29.66.24610.29.66.247
19110.29.66.248/3010.29.66.249 – 10.29.66.25010.29.66.251
19210.29.66.252/3010.29.66.253 – 10.29.66.25410.29.66.255
19310.29.67.0/3010.29.67.1 – 10.29.67.210.29.67.3
19410.29.67.4/3010.29.67.5 – 10.29.67.610.29.67.7
19510.29.67.8/3010.29.67.9 – 10.29.67.1010.29.67.11
19610.29.67.12/3010.29.67.13 – 10.29.67.1410.29.67.15
19710.29.67.16/3010.29.67.17 – 10.29.67.1810.29.67.19
19810.29.67.20/3010.29.67.21 – 10.29.67.2210.29.67.23
19910.29.67.24/3010.29.67.25 – 10.29.67.2610.29.67.27
20010.29.67.28/3010.29.67.29 – 10.29.67.3010.29.67.31
20110.29.67.32/3010.29.67.33 – 10.29.67.3410.29.67.35
20210.29.67.36/3010.29.67.37 – 10.29.67.3810.29.67.39
20310.29.67.40/3010.29.67.41 – 10.29.67.4210.29.67.43
20410.29.67.44/3010.29.67.45 – 10.29.67.4610.29.67.47
20510.29.67.48/3010.29.67.49 – 10.29.67.5010.29.67.51
20610.29.67.52/3010.29.67.53 – 10.29.67.5410.29.67.55
20710.29.67.56/3010.29.67.57 – 10.29.67.5810.29.67.59
20810.29.67.60/3010.29.67.61 – 10.29.67.6210.29.67.63
20910.29.67.64/3010.29.67.65 – 10.29.67.6610.29.67.67
21010.29.67.68/3010.29.67.69 – 10.29.67.7010.29.67.71
21110.29.67.72/3010.29.67.73 – 10.29.67.7410.29.67.75
21210.29.67.76/3010.29.67.77 – 10.29.67.7810.29.67.79
21310.29.67.80/3010.29.67.81 – 10.29.67.8210.29.67.83
21410.29.67.84/3010.29.67.85 – 10.29.67.8610.29.67.87
21510.29.67.88/3010.29.67.89 – 10.29.67.9010.29.67.91
21610.29.67.92/3010.29.67.93 – 10.29.67.9410.29.67.95
21710.29.67.96/3010.29.67.97 – 10.29.67.9810.29.67.99
21810.29.67.100/3010.29.67.101 – 10.29.67.10210.29.67.103
21910.29.67.104/3010.29.67.105 – 10.29.67.10610.29.67.107
22010.29.67.108/3010.29.67.109 – 10.29.67.11010.29.67.111
22110.29.67.112/3010.29.67.113 – 10.29.67.11410.29.67.115
22210.29.67.116/3010.29.67.117 – 10.29.67.11810.29.67.119
22310.29.67.120/3010.29.67.121 – 10.29.67.12210.29.67.123
22410.29.67.124/3010.29.67.125 – 10.29.67.12610.29.67.127
22510.29.67.128/3010.29.67.129 – 10.29.67.13010.29.67.131
22610.29.67.132/3010.29.67.133 – 10.29.67.13410.29.67.135
22710.29.67.136/3010.29.67.137 – 10.29.67.13810.29.67.139
22810.29.67.140/3010.29.67.141 – 10.29.67.14210.29.67.143
22910.29.67.144/3010.29.67.145 – 10.29.67.14610.29.67.147
23010.29.67.148/3010.29.67.149 – 10.29.67.15010.29.67.151
23110.29.67.152/3010.29.67.153 – 10.29.67.15410.29.67.155
23210.29.67.156/3010.29.67.157 – 10.29.67.15810.29.67.159
23310.29.67.160/3010.29.67.161 – 10.29.67.16210.29.67.163
23410.29.67.164/3010.29.67.165 – 10.29.67.16610.29.67.167
23510.29.67.168/3010.29.67.169 – 10.29.67.17010.29.67.171
23610.29.67.172/3010.29.67.173 – 10.29.67.17410.29.67.175
23710.29.67.176/3010.29.67.177 – 10.29.67.17810.29.67.179
23810.29.67.180/3010.29.67.181 – 10.29.67.18210.29.67.183
23910.29.67.184/3010.29.67.185 – 10.29.67.18610.29.67.187
24010.29.67.188/3010.29.67.189 – 10.29.67.19010.29.67.191
24110.29.67.192/3010.29.67.193 – 10.29.67.19410.29.67.195
24210.29.67.196/3010.29.67.197 – 10.29.67.19810.29.67.199
24310.29.67.200/3010.29.67.201 – 10.29.67.20210.29.67.203
24410.29.67.204/3010.29.67.205 – 10.29.67.20610.29.67.207
24510.29.67.208/3010.29.67.209 – 10.29.67.21010.29.67.211
24610.29.67.212/3010.29.67.213 – 10.29.67.21410.29.67.215
24710.29.67.216/3010.29.67.217 – 10.29.67.21810.29.67.219
24810.29.67.220/3010.29.67.221 – 10.29.67.22210.29.67.223
24910.29.67.224/3010.29.67.225 – 10.29.67.22610.29.67.227
25010.29.67.228/3010.29.67.229 – 10.29.67.23010.29.67.231
25110.29.67.232/3010.29.67.233 – 10.29.67.23410.29.67.235
25210.29.67.236/3010.29.67.237 – 10.29.67.23810.29.67.239
25310.29.67.240/3010.29.67.241 – 10.29.67.24210.29.67.243
25410.29.67.244/3010.29.67.245 – 10.29.67.24610.29.67.247
25510.29.67.248/3010.29.67.249 – 10.29.67.25010.29.67.251
25610.29.67.252/3010.29.67.253 – 10.29.67.25410.29.67.255

showing 256 of 4,096

01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /18
/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-
/18255.255.192.016,38416,3821
/19255.255.224.08,1928,1902 split →
/20255.255.240.04,0964,0944 split →
/21255.255.248.02,0482,0468 split →
/22255.255.252.01,0241,02216 split →
/23255.255.254.051251032 split →
/24255.255.255.025625464 split →
/25255.255.255.128128126128 split →
/26255.255.255.1926462256 split →
/27255.255.255.2243230512 split →
/28255.255.255.24016141,024 split →
/29255.255.255.248862,048 split →
/30255.255.255.252424,096 split →
/31255.255.255.254228,192 split →
/32255.255.255.2551116,384 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 →