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)10.158.68.0/23
network10.158.68.0/23
broadcast10.158.69.255
first host10.158.68.1
last host10.158.69.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.158.68.0/23
address00001010.10011110.01000100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10011110.01000100.00000000
broadcast00001010.10011110.01000101.11111111
green = network part, grey = host part
hex0x0a9e4400
decimal178144256
reverse dns0.68.158.10.in-addr.arpa
ipv4-mapped::ffff:a9e:4400

/23 split into /31 · 256 subnets

close ×
#networkhost rangebroadcast
110.158.68.0/3110.158.68.0 – 10.158.68.110.158.68.1
210.158.68.2/3110.158.68.2 – 10.158.68.310.158.68.3
310.158.68.4/3110.158.68.4 – 10.158.68.510.158.68.5
410.158.68.6/3110.158.68.6 – 10.158.68.710.158.68.7
510.158.68.8/3110.158.68.8 – 10.158.68.910.158.68.9
610.158.68.10/3110.158.68.10 – 10.158.68.1110.158.68.11
710.158.68.12/3110.158.68.12 – 10.158.68.1310.158.68.13
810.158.68.14/3110.158.68.14 – 10.158.68.1510.158.68.15
910.158.68.16/3110.158.68.16 – 10.158.68.1710.158.68.17
1010.158.68.18/3110.158.68.18 – 10.158.68.1910.158.68.19
1110.158.68.20/3110.158.68.20 – 10.158.68.2110.158.68.21
1210.158.68.22/3110.158.68.22 – 10.158.68.2310.158.68.23
1310.158.68.24/3110.158.68.24 – 10.158.68.2510.158.68.25
1410.158.68.26/3110.158.68.26 – 10.158.68.2710.158.68.27
1510.158.68.28/3110.158.68.28 – 10.158.68.2910.158.68.29
1610.158.68.30/3110.158.68.30 – 10.158.68.3110.158.68.31
1710.158.68.32/3110.158.68.32 – 10.158.68.3310.158.68.33
1810.158.68.34/3110.158.68.34 – 10.158.68.3510.158.68.35
1910.158.68.36/3110.158.68.36 – 10.158.68.3710.158.68.37
2010.158.68.38/3110.158.68.38 – 10.158.68.3910.158.68.39
2110.158.68.40/3110.158.68.40 – 10.158.68.4110.158.68.41
2210.158.68.42/3110.158.68.42 – 10.158.68.4310.158.68.43
2310.158.68.44/3110.158.68.44 – 10.158.68.4510.158.68.45
2410.158.68.46/3110.158.68.46 – 10.158.68.4710.158.68.47
2510.158.68.48/3110.158.68.48 – 10.158.68.4910.158.68.49
2610.158.68.50/3110.158.68.50 – 10.158.68.5110.158.68.51
2710.158.68.52/3110.158.68.52 – 10.158.68.5310.158.68.53
2810.158.68.54/3110.158.68.54 – 10.158.68.5510.158.68.55
2910.158.68.56/3110.158.68.56 – 10.158.68.5710.158.68.57
3010.158.68.58/3110.158.68.58 – 10.158.68.5910.158.68.59
3110.158.68.60/3110.158.68.60 – 10.158.68.6110.158.68.61
3210.158.68.62/3110.158.68.62 – 10.158.68.6310.158.68.63
3310.158.68.64/3110.158.68.64 – 10.158.68.6510.158.68.65
3410.158.68.66/3110.158.68.66 – 10.158.68.6710.158.68.67
3510.158.68.68/3110.158.68.68 – 10.158.68.6910.158.68.69
3610.158.68.70/3110.158.68.70 – 10.158.68.7110.158.68.71
3710.158.68.72/3110.158.68.72 – 10.158.68.7310.158.68.73
3810.158.68.74/3110.158.68.74 – 10.158.68.7510.158.68.75
3910.158.68.76/3110.158.68.76 – 10.158.68.7710.158.68.77
4010.158.68.78/3110.158.68.78 – 10.158.68.7910.158.68.79
4110.158.68.80/3110.158.68.80 – 10.158.68.8110.158.68.81
4210.158.68.82/3110.158.68.82 – 10.158.68.8310.158.68.83
4310.158.68.84/3110.158.68.84 – 10.158.68.8510.158.68.85
4410.158.68.86/3110.158.68.86 – 10.158.68.8710.158.68.87
4510.158.68.88/3110.158.68.88 – 10.158.68.8910.158.68.89
4610.158.68.90/3110.158.68.90 – 10.158.68.9110.158.68.91
4710.158.68.92/3110.158.68.92 – 10.158.68.9310.158.68.93
4810.158.68.94/3110.158.68.94 – 10.158.68.9510.158.68.95
4910.158.68.96/3110.158.68.96 – 10.158.68.9710.158.68.97
5010.158.68.98/3110.158.68.98 – 10.158.68.9910.158.68.99
5110.158.68.100/3110.158.68.100 – 10.158.68.10110.158.68.101
5210.158.68.102/3110.158.68.102 – 10.158.68.10310.158.68.103
5310.158.68.104/3110.158.68.104 – 10.158.68.10510.158.68.105
5410.158.68.106/3110.158.68.106 – 10.158.68.10710.158.68.107
5510.158.68.108/3110.158.68.108 – 10.158.68.10910.158.68.109
5610.158.68.110/3110.158.68.110 – 10.158.68.11110.158.68.111
5710.158.68.112/3110.158.68.112 – 10.158.68.11310.158.68.113
5810.158.68.114/3110.158.68.114 – 10.158.68.11510.158.68.115
5910.158.68.116/3110.158.68.116 – 10.158.68.11710.158.68.117
6010.158.68.118/3110.158.68.118 – 10.158.68.11910.158.68.119
6110.158.68.120/3110.158.68.120 – 10.158.68.12110.158.68.121
6210.158.68.122/3110.158.68.122 – 10.158.68.12310.158.68.123
6310.158.68.124/3110.158.68.124 – 10.158.68.12510.158.68.125
6410.158.68.126/3110.158.68.126 – 10.158.68.12710.158.68.127
6510.158.68.128/3110.158.68.128 – 10.158.68.12910.158.68.129
6610.158.68.130/3110.158.68.130 – 10.158.68.13110.158.68.131
6710.158.68.132/3110.158.68.132 – 10.158.68.13310.158.68.133
6810.158.68.134/3110.158.68.134 – 10.158.68.13510.158.68.135
6910.158.68.136/3110.158.68.136 – 10.158.68.13710.158.68.137
7010.158.68.138/3110.158.68.138 – 10.158.68.13910.158.68.139
7110.158.68.140/3110.158.68.140 – 10.158.68.14110.158.68.141
7210.158.68.142/3110.158.68.142 – 10.158.68.14310.158.68.143
7310.158.68.144/3110.158.68.144 – 10.158.68.14510.158.68.145
7410.158.68.146/3110.158.68.146 – 10.158.68.14710.158.68.147
7510.158.68.148/3110.158.68.148 – 10.158.68.14910.158.68.149
7610.158.68.150/3110.158.68.150 – 10.158.68.15110.158.68.151
7710.158.68.152/3110.158.68.152 – 10.158.68.15310.158.68.153
7810.158.68.154/3110.158.68.154 – 10.158.68.15510.158.68.155
7910.158.68.156/3110.158.68.156 – 10.158.68.15710.158.68.157
8010.158.68.158/3110.158.68.158 – 10.158.68.15910.158.68.159
8110.158.68.160/3110.158.68.160 – 10.158.68.16110.158.68.161
8210.158.68.162/3110.158.68.162 – 10.158.68.16310.158.68.163
8310.158.68.164/3110.158.68.164 – 10.158.68.16510.158.68.165
8410.158.68.166/3110.158.68.166 – 10.158.68.16710.158.68.167
8510.158.68.168/3110.158.68.168 – 10.158.68.16910.158.68.169
8610.158.68.170/3110.158.68.170 – 10.158.68.17110.158.68.171
8710.158.68.172/3110.158.68.172 – 10.158.68.17310.158.68.173
8810.158.68.174/3110.158.68.174 – 10.158.68.17510.158.68.175
8910.158.68.176/3110.158.68.176 – 10.158.68.17710.158.68.177
9010.158.68.178/3110.158.68.178 – 10.158.68.17910.158.68.179
9110.158.68.180/3110.158.68.180 – 10.158.68.18110.158.68.181
9210.158.68.182/3110.158.68.182 – 10.158.68.18310.158.68.183
9310.158.68.184/3110.158.68.184 – 10.158.68.18510.158.68.185
9410.158.68.186/3110.158.68.186 – 10.158.68.18710.158.68.187
9510.158.68.188/3110.158.68.188 – 10.158.68.18910.158.68.189
9610.158.68.190/3110.158.68.190 – 10.158.68.19110.158.68.191
9710.158.68.192/3110.158.68.192 – 10.158.68.19310.158.68.193
9810.158.68.194/3110.158.68.194 – 10.158.68.19510.158.68.195
9910.158.68.196/3110.158.68.196 – 10.158.68.19710.158.68.197
10010.158.68.198/3110.158.68.198 – 10.158.68.19910.158.68.199
10110.158.68.200/3110.158.68.200 – 10.158.68.20110.158.68.201
10210.158.68.202/3110.158.68.202 – 10.158.68.20310.158.68.203
10310.158.68.204/3110.158.68.204 – 10.158.68.20510.158.68.205
10410.158.68.206/3110.158.68.206 – 10.158.68.20710.158.68.207
10510.158.68.208/3110.158.68.208 – 10.158.68.20910.158.68.209
10610.158.68.210/3110.158.68.210 – 10.158.68.21110.158.68.211
10710.158.68.212/3110.158.68.212 – 10.158.68.21310.158.68.213
10810.158.68.214/3110.158.68.214 – 10.158.68.21510.158.68.215
10910.158.68.216/3110.158.68.216 – 10.158.68.21710.158.68.217
11010.158.68.218/3110.158.68.218 – 10.158.68.21910.158.68.219
11110.158.68.220/3110.158.68.220 – 10.158.68.22110.158.68.221
11210.158.68.222/3110.158.68.222 – 10.158.68.22310.158.68.223
11310.158.68.224/3110.158.68.224 – 10.158.68.22510.158.68.225
11410.158.68.226/3110.158.68.226 – 10.158.68.22710.158.68.227
11510.158.68.228/3110.158.68.228 – 10.158.68.22910.158.68.229
11610.158.68.230/3110.158.68.230 – 10.158.68.23110.158.68.231
11710.158.68.232/3110.158.68.232 – 10.158.68.23310.158.68.233
11810.158.68.234/3110.158.68.234 – 10.158.68.23510.158.68.235
11910.158.68.236/3110.158.68.236 – 10.158.68.23710.158.68.237
12010.158.68.238/3110.158.68.238 – 10.158.68.23910.158.68.239
12110.158.68.240/3110.158.68.240 – 10.158.68.24110.158.68.241
12210.158.68.242/3110.158.68.242 – 10.158.68.24310.158.68.243
12310.158.68.244/3110.158.68.244 – 10.158.68.24510.158.68.245
12410.158.68.246/3110.158.68.246 – 10.158.68.24710.158.68.247
12510.158.68.248/3110.158.68.248 – 10.158.68.24910.158.68.249
12610.158.68.250/3110.158.68.250 – 10.158.68.25110.158.68.251
12710.158.68.252/3110.158.68.252 – 10.158.68.25310.158.68.253
12810.158.68.254/3110.158.68.254 – 10.158.68.25510.158.68.255
12910.158.69.0/3110.158.69.0 – 10.158.69.110.158.69.1
13010.158.69.2/3110.158.69.2 – 10.158.69.310.158.69.3
13110.158.69.4/3110.158.69.4 – 10.158.69.510.158.69.5
13210.158.69.6/3110.158.69.6 – 10.158.69.710.158.69.7
13310.158.69.8/3110.158.69.8 – 10.158.69.910.158.69.9
13410.158.69.10/3110.158.69.10 – 10.158.69.1110.158.69.11
13510.158.69.12/3110.158.69.12 – 10.158.69.1310.158.69.13
13610.158.69.14/3110.158.69.14 – 10.158.69.1510.158.69.15
13710.158.69.16/3110.158.69.16 – 10.158.69.1710.158.69.17
13810.158.69.18/3110.158.69.18 – 10.158.69.1910.158.69.19
13910.158.69.20/3110.158.69.20 – 10.158.69.2110.158.69.21
14010.158.69.22/3110.158.69.22 – 10.158.69.2310.158.69.23
14110.158.69.24/3110.158.69.24 – 10.158.69.2510.158.69.25
14210.158.69.26/3110.158.69.26 – 10.158.69.2710.158.69.27
14310.158.69.28/3110.158.69.28 – 10.158.69.2910.158.69.29
14410.158.69.30/3110.158.69.30 – 10.158.69.3110.158.69.31
14510.158.69.32/3110.158.69.32 – 10.158.69.3310.158.69.33
14610.158.69.34/3110.158.69.34 – 10.158.69.3510.158.69.35
14710.158.69.36/3110.158.69.36 – 10.158.69.3710.158.69.37
14810.158.69.38/3110.158.69.38 – 10.158.69.3910.158.69.39
14910.158.69.40/3110.158.69.40 – 10.158.69.4110.158.69.41
15010.158.69.42/3110.158.69.42 – 10.158.69.4310.158.69.43
15110.158.69.44/3110.158.69.44 – 10.158.69.4510.158.69.45
15210.158.69.46/3110.158.69.46 – 10.158.69.4710.158.69.47
15310.158.69.48/3110.158.69.48 – 10.158.69.4910.158.69.49
15410.158.69.50/3110.158.69.50 – 10.158.69.5110.158.69.51
15510.158.69.52/3110.158.69.52 – 10.158.69.5310.158.69.53
15610.158.69.54/3110.158.69.54 – 10.158.69.5510.158.69.55
15710.158.69.56/3110.158.69.56 – 10.158.69.5710.158.69.57
15810.158.69.58/3110.158.69.58 – 10.158.69.5910.158.69.59
15910.158.69.60/3110.158.69.60 – 10.158.69.6110.158.69.61
16010.158.69.62/3110.158.69.62 – 10.158.69.6310.158.69.63
16110.158.69.64/3110.158.69.64 – 10.158.69.6510.158.69.65
16210.158.69.66/3110.158.69.66 – 10.158.69.6710.158.69.67
16310.158.69.68/3110.158.69.68 – 10.158.69.6910.158.69.69
16410.158.69.70/3110.158.69.70 – 10.158.69.7110.158.69.71
16510.158.69.72/3110.158.69.72 – 10.158.69.7310.158.69.73
16610.158.69.74/3110.158.69.74 – 10.158.69.7510.158.69.75
16710.158.69.76/3110.158.69.76 – 10.158.69.7710.158.69.77
16810.158.69.78/3110.158.69.78 – 10.158.69.7910.158.69.79
16910.158.69.80/3110.158.69.80 – 10.158.69.8110.158.69.81
17010.158.69.82/3110.158.69.82 – 10.158.69.8310.158.69.83
17110.158.69.84/3110.158.69.84 – 10.158.69.8510.158.69.85
17210.158.69.86/3110.158.69.86 – 10.158.69.8710.158.69.87
17310.158.69.88/3110.158.69.88 – 10.158.69.8910.158.69.89
17410.158.69.90/3110.158.69.90 – 10.158.69.9110.158.69.91
17510.158.69.92/3110.158.69.92 – 10.158.69.9310.158.69.93
17610.158.69.94/3110.158.69.94 – 10.158.69.9510.158.69.95
17710.158.69.96/3110.158.69.96 – 10.158.69.9710.158.69.97
17810.158.69.98/3110.158.69.98 – 10.158.69.9910.158.69.99
17910.158.69.100/3110.158.69.100 – 10.158.69.10110.158.69.101
18010.158.69.102/3110.158.69.102 – 10.158.69.10310.158.69.103
18110.158.69.104/3110.158.69.104 – 10.158.69.10510.158.69.105
18210.158.69.106/3110.158.69.106 – 10.158.69.10710.158.69.107
18310.158.69.108/3110.158.69.108 – 10.158.69.10910.158.69.109
18410.158.69.110/3110.158.69.110 – 10.158.69.11110.158.69.111
18510.158.69.112/3110.158.69.112 – 10.158.69.11310.158.69.113
18610.158.69.114/3110.158.69.114 – 10.158.69.11510.158.69.115
18710.158.69.116/3110.158.69.116 – 10.158.69.11710.158.69.117
18810.158.69.118/3110.158.69.118 – 10.158.69.11910.158.69.119
18910.158.69.120/3110.158.69.120 – 10.158.69.12110.158.69.121
19010.158.69.122/3110.158.69.122 – 10.158.69.12310.158.69.123
19110.158.69.124/3110.158.69.124 – 10.158.69.12510.158.69.125
19210.158.69.126/3110.158.69.126 – 10.158.69.12710.158.69.127
19310.158.69.128/3110.158.69.128 – 10.158.69.12910.158.69.129
19410.158.69.130/3110.158.69.130 – 10.158.69.13110.158.69.131
19510.158.69.132/3110.158.69.132 – 10.158.69.13310.158.69.133
19610.158.69.134/3110.158.69.134 – 10.158.69.13510.158.69.135
19710.158.69.136/3110.158.69.136 – 10.158.69.13710.158.69.137
19810.158.69.138/3110.158.69.138 – 10.158.69.13910.158.69.139
19910.158.69.140/3110.158.69.140 – 10.158.69.14110.158.69.141
20010.158.69.142/3110.158.69.142 – 10.158.69.14310.158.69.143
20110.158.69.144/3110.158.69.144 – 10.158.69.14510.158.69.145
20210.158.69.146/3110.158.69.146 – 10.158.69.14710.158.69.147
20310.158.69.148/3110.158.69.148 – 10.158.69.14910.158.69.149
20410.158.69.150/3110.158.69.150 – 10.158.69.15110.158.69.151
20510.158.69.152/3110.158.69.152 – 10.158.69.15310.158.69.153
20610.158.69.154/3110.158.69.154 – 10.158.69.15510.158.69.155
20710.158.69.156/3110.158.69.156 – 10.158.69.15710.158.69.157
20810.158.69.158/3110.158.69.158 – 10.158.69.15910.158.69.159
20910.158.69.160/3110.158.69.160 – 10.158.69.16110.158.69.161
21010.158.69.162/3110.158.69.162 – 10.158.69.16310.158.69.163
21110.158.69.164/3110.158.69.164 – 10.158.69.16510.158.69.165
21210.158.69.166/3110.158.69.166 – 10.158.69.16710.158.69.167
21310.158.69.168/3110.158.69.168 – 10.158.69.16910.158.69.169
21410.158.69.170/3110.158.69.170 – 10.158.69.17110.158.69.171
21510.158.69.172/3110.158.69.172 – 10.158.69.17310.158.69.173
21610.158.69.174/3110.158.69.174 – 10.158.69.17510.158.69.175
21710.158.69.176/3110.158.69.176 – 10.158.69.17710.158.69.177
21810.158.69.178/3110.158.69.178 – 10.158.69.17910.158.69.179
21910.158.69.180/3110.158.69.180 – 10.158.69.18110.158.69.181
22010.158.69.182/3110.158.69.182 – 10.158.69.18310.158.69.183
22110.158.69.184/3110.158.69.184 – 10.158.69.18510.158.69.185
22210.158.69.186/3110.158.69.186 – 10.158.69.18710.158.69.187
22310.158.69.188/3110.158.69.188 – 10.158.69.18910.158.69.189
22410.158.69.190/3110.158.69.190 – 10.158.69.19110.158.69.191
22510.158.69.192/3110.158.69.192 – 10.158.69.19310.158.69.193
22610.158.69.194/3110.158.69.194 – 10.158.69.19510.158.69.195
22710.158.69.196/3110.158.69.196 – 10.158.69.19710.158.69.197
22810.158.69.198/3110.158.69.198 – 10.158.69.19910.158.69.199
22910.158.69.200/3110.158.69.200 – 10.158.69.20110.158.69.201
23010.158.69.202/3110.158.69.202 – 10.158.69.20310.158.69.203
23110.158.69.204/3110.158.69.204 – 10.158.69.20510.158.69.205
23210.158.69.206/3110.158.69.206 – 10.158.69.20710.158.69.207
23310.158.69.208/3110.158.69.208 – 10.158.69.20910.158.69.209
23410.158.69.210/3110.158.69.210 – 10.158.69.21110.158.69.211
23510.158.69.212/3110.158.69.212 – 10.158.69.21310.158.69.213
23610.158.69.214/3110.158.69.214 – 10.158.69.21510.158.69.215
23710.158.69.216/3110.158.69.216 – 10.158.69.21710.158.69.217
23810.158.69.218/3110.158.69.218 – 10.158.69.21910.158.69.219
23910.158.69.220/3110.158.69.220 – 10.158.69.22110.158.69.221
24010.158.69.222/3110.158.69.222 – 10.158.69.22310.158.69.223
24110.158.69.224/3110.158.69.224 – 10.158.69.22510.158.69.225
24210.158.69.226/3110.158.69.226 – 10.158.69.22710.158.69.227
24310.158.69.228/3110.158.69.228 – 10.158.69.22910.158.69.229
24410.158.69.230/3110.158.69.230 – 10.158.69.23110.158.69.231
24510.158.69.232/3110.158.69.232 – 10.158.69.23310.158.69.233
24610.158.69.234/3110.158.69.234 – 10.158.69.23510.158.69.235
24710.158.69.236/3110.158.69.236 – 10.158.69.23710.158.69.237
24810.158.69.238/3110.158.69.238 – 10.158.69.23910.158.69.239
24910.158.69.240/3110.158.69.240 – 10.158.69.24110.158.69.241
25010.158.69.242/3110.158.69.242 – 10.158.69.24310.158.69.243
25110.158.69.244/3110.158.69.244 – 10.158.69.24510.158.69.245
25210.158.69.246/3110.158.69.246 – 10.158.69.24710.158.69.247
25310.158.69.248/3110.158.69.248 – 10.158.69.24910.158.69.249
25410.158.69.250/3110.158.69.250 – 10.158.69.25110.158.69.251
25510.158.69.252/3110.158.69.252 – 10.158.69.25310.158.69.253
25610.158.69.254/3110.158.69.254 – 10.158.69.25510.158.69.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /23
/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-
/21255.255.248.02,0482,046-
/22255.255.252.01,0241,022-
/23255.255.254.05125101
/24255.255.255.02562542 split →
/25255.255.255.1281281264 split →
/26255.255.255.19264628 split →
/27255.255.255.224323016 split →
/28255.255.255.240161432 split →
/29255.255.255.2488664 split →
/30255.255.255.25242128 split →
/31255.255.255.25422256 split →
/32255.255.255.25511512 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 →