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)10.2.186.0/23
network10.2.186.0/23
broadcast10.2.187.255
first host10.2.186.1
last host10.2.187.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.2.186.0/23
address00001010.00000010.10111010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000010.10111010.00000000
broadcast00001010.00000010.10111011.11111111
green = network part, grey = host part
hex0x0a02ba00
decimal167950848
reverse dns0.186.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:ba00

/23 split into /31 · 256 subnets

close ×
#networkhost rangebroadcast
110.2.186.0/3110.2.186.0 – 10.2.186.110.2.186.1
210.2.186.2/3110.2.186.2 – 10.2.186.310.2.186.3
310.2.186.4/3110.2.186.4 – 10.2.186.510.2.186.5
410.2.186.6/3110.2.186.6 – 10.2.186.710.2.186.7
510.2.186.8/3110.2.186.8 – 10.2.186.910.2.186.9
610.2.186.10/3110.2.186.10 – 10.2.186.1110.2.186.11
710.2.186.12/3110.2.186.12 – 10.2.186.1310.2.186.13
810.2.186.14/3110.2.186.14 – 10.2.186.1510.2.186.15
910.2.186.16/3110.2.186.16 – 10.2.186.1710.2.186.17
1010.2.186.18/3110.2.186.18 – 10.2.186.1910.2.186.19
1110.2.186.20/3110.2.186.20 – 10.2.186.2110.2.186.21
1210.2.186.22/3110.2.186.22 – 10.2.186.2310.2.186.23
1310.2.186.24/3110.2.186.24 – 10.2.186.2510.2.186.25
1410.2.186.26/3110.2.186.26 – 10.2.186.2710.2.186.27
1510.2.186.28/3110.2.186.28 – 10.2.186.2910.2.186.29
1610.2.186.30/3110.2.186.30 – 10.2.186.3110.2.186.31
1710.2.186.32/3110.2.186.32 – 10.2.186.3310.2.186.33
1810.2.186.34/3110.2.186.34 – 10.2.186.3510.2.186.35
1910.2.186.36/3110.2.186.36 – 10.2.186.3710.2.186.37
2010.2.186.38/3110.2.186.38 – 10.2.186.3910.2.186.39
2110.2.186.40/3110.2.186.40 – 10.2.186.4110.2.186.41
2210.2.186.42/3110.2.186.42 – 10.2.186.4310.2.186.43
2310.2.186.44/3110.2.186.44 – 10.2.186.4510.2.186.45
2410.2.186.46/3110.2.186.46 – 10.2.186.4710.2.186.47
2510.2.186.48/3110.2.186.48 – 10.2.186.4910.2.186.49
2610.2.186.50/3110.2.186.50 – 10.2.186.5110.2.186.51
2710.2.186.52/3110.2.186.52 – 10.2.186.5310.2.186.53
2810.2.186.54/3110.2.186.54 – 10.2.186.5510.2.186.55
2910.2.186.56/3110.2.186.56 – 10.2.186.5710.2.186.57
3010.2.186.58/3110.2.186.58 – 10.2.186.5910.2.186.59
3110.2.186.60/3110.2.186.60 – 10.2.186.6110.2.186.61
3210.2.186.62/3110.2.186.62 – 10.2.186.6310.2.186.63
3310.2.186.64/3110.2.186.64 – 10.2.186.6510.2.186.65
3410.2.186.66/3110.2.186.66 – 10.2.186.6710.2.186.67
3510.2.186.68/3110.2.186.68 – 10.2.186.6910.2.186.69
3610.2.186.70/3110.2.186.70 – 10.2.186.7110.2.186.71
3710.2.186.72/3110.2.186.72 – 10.2.186.7310.2.186.73
3810.2.186.74/3110.2.186.74 – 10.2.186.7510.2.186.75
3910.2.186.76/3110.2.186.76 – 10.2.186.7710.2.186.77
4010.2.186.78/3110.2.186.78 – 10.2.186.7910.2.186.79
4110.2.186.80/3110.2.186.80 – 10.2.186.8110.2.186.81
4210.2.186.82/3110.2.186.82 – 10.2.186.8310.2.186.83
4310.2.186.84/3110.2.186.84 – 10.2.186.8510.2.186.85
4410.2.186.86/3110.2.186.86 – 10.2.186.8710.2.186.87
4510.2.186.88/3110.2.186.88 – 10.2.186.8910.2.186.89
4610.2.186.90/3110.2.186.90 – 10.2.186.9110.2.186.91
4710.2.186.92/3110.2.186.92 – 10.2.186.9310.2.186.93
4810.2.186.94/3110.2.186.94 – 10.2.186.9510.2.186.95
4910.2.186.96/3110.2.186.96 – 10.2.186.9710.2.186.97
5010.2.186.98/3110.2.186.98 – 10.2.186.9910.2.186.99
5110.2.186.100/3110.2.186.100 – 10.2.186.10110.2.186.101
5210.2.186.102/3110.2.186.102 – 10.2.186.10310.2.186.103
5310.2.186.104/3110.2.186.104 – 10.2.186.10510.2.186.105
5410.2.186.106/3110.2.186.106 – 10.2.186.10710.2.186.107
5510.2.186.108/3110.2.186.108 – 10.2.186.10910.2.186.109
5610.2.186.110/3110.2.186.110 – 10.2.186.11110.2.186.111
5710.2.186.112/3110.2.186.112 – 10.2.186.11310.2.186.113
5810.2.186.114/3110.2.186.114 – 10.2.186.11510.2.186.115
5910.2.186.116/3110.2.186.116 – 10.2.186.11710.2.186.117
6010.2.186.118/3110.2.186.118 – 10.2.186.11910.2.186.119
6110.2.186.120/3110.2.186.120 – 10.2.186.12110.2.186.121
6210.2.186.122/3110.2.186.122 – 10.2.186.12310.2.186.123
6310.2.186.124/3110.2.186.124 – 10.2.186.12510.2.186.125
6410.2.186.126/3110.2.186.126 – 10.2.186.12710.2.186.127
6510.2.186.128/3110.2.186.128 – 10.2.186.12910.2.186.129
6610.2.186.130/3110.2.186.130 – 10.2.186.13110.2.186.131
6710.2.186.132/3110.2.186.132 – 10.2.186.13310.2.186.133
6810.2.186.134/3110.2.186.134 – 10.2.186.13510.2.186.135
6910.2.186.136/3110.2.186.136 – 10.2.186.13710.2.186.137
7010.2.186.138/3110.2.186.138 – 10.2.186.13910.2.186.139
7110.2.186.140/3110.2.186.140 – 10.2.186.14110.2.186.141
7210.2.186.142/3110.2.186.142 – 10.2.186.14310.2.186.143
7310.2.186.144/3110.2.186.144 – 10.2.186.14510.2.186.145
7410.2.186.146/3110.2.186.146 – 10.2.186.14710.2.186.147
7510.2.186.148/3110.2.186.148 – 10.2.186.14910.2.186.149
7610.2.186.150/3110.2.186.150 – 10.2.186.15110.2.186.151
7710.2.186.152/3110.2.186.152 – 10.2.186.15310.2.186.153
7810.2.186.154/3110.2.186.154 – 10.2.186.15510.2.186.155
7910.2.186.156/3110.2.186.156 – 10.2.186.15710.2.186.157
8010.2.186.158/3110.2.186.158 – 10.2.186.15910.2.186.159
8110.2.186.160/3110.2.186.160 – 10.2.186.16110.2.186.161
8210.2.186.162/3110.2.186.162 – 10.2.186.16310.2.186.163
8310.2.186.164/3110.2.186.164 – 10.2.186.16510.2.186.165
8410.2.186.166/3110.2.186.166 – 10.2.186.16710.2.186.167
8510.2.186.168/3110.2.186.168 – 10.2.186.16910.2.186.169
8610.2.186.170/3110.2.186.170 – 10.2.186.17110.2.186.171
8710.2.186.172/3110.2.186.172 – 10.2.186.17310.2.186.173
8810.2.186.174/3110.2.186.174 – 10.2.186.17510.2.186.175
8910.2.186.176/3110.2.186.176 – 10.2.186.17710.2.186.177
9010.2.186.178/3110.2.186.178 – 10.2.186.17910.2.186.179
9110.2.186.180/3110.2.186.180 – 10.2.186.18110.2.186.181
9210.2.186.182/3110.2.186.182 – 10.2.186.18310.2.186.183
9310.2.186.184/3110.2.186.184 – 10.2.186.18510.2.186.185
9410.2.186.186/3110.2.186.186 – 10.2.186.18710.2.186.187
9510.2.186.188/3110.2.186.188 – 10.2.186.18910.2.186.189
9610.2.186.190/3110.2.186.190 – 10.2.186.19110.2.186.191
9710.2.186.192/3110.2.186.192 – 10.2.186.19310.2.186.193
9810.2.186.194/3110.2.186.194 – 10.2.186.19510.2.186.195
9910.2.186.196/3110.2.186.196 – 10.2.186.19710.2.186.197
10010.2.186.198/3110.2.186.198 – 10.2.186.19910.2.186.199
10110.2.186.200/3110.2.186.200 – 10.2.186.20110.2.186.201
10210.2.186.202/3110.2.186.202 – 10.2.186.20310.2.186.203
10310.2.186.204/3110.2.186.204 – 10.2.186.20510.2.186.205
10410.2.186.206/3110.2.186.206 – 10.2.186.20710.2.186.207
10510.2.186.208/3110.2.186.208 – 10.2.186.20910.2.186.209
10610.2.186.210/3110.2.186.210 – 10.2.186.21110.2.186.211
10710.2.186.212/3110.2.186.212 – 10.2.186.21310.2.186.213
10810.2.186.214/3110.2.186.214 – 10.2.186.21510.2.186.215
10910.2.186.216/3110.2.186.216 – 10.2.186.21710.2.186.217
11010.2.186.218/3110.2.186.218 – 10.2.186.21910.2.186.219
11110.2.186.220/3110.2.186.220 – 10.2.186.22110.2.186.221
11210.2.186.222/3110.2.186.222 – 10.2.186.22310.2.186.223
11310.2.186.224/3110.2.186.224 – 10.2.186.22510.2.186.225
11410.2.186.226/3110.2.186.226 – 10.2.186.22710.2.186.227
11510.2.186.228/3110.2.186.228 – 10.2.186.22910.2.186.229
11610.2.186.230/3110.2.186.230 – 10.2.186.23110.2.186.231
11710.2.186.232/3110.2.186.232 – 10.2.186.23310.2.186.233
11810.2.186.234/3110.2.186.234 – 10.2.186.23510.2.186.235
11910.2.186.236/3110.2.186.236 – 10.2.186.23710.2.186.237
12010.2.186.238/3110.2.186.238 – 10.2.186.23910.2.186.239
12110.2.186.240/3110.2.186.240 – 10.2.186.24110.2.186.241
12210.2.186.242/3110.2.186.242 – 10.2.186.24310.2.186.243
12310.2.186.244/3110.2.186.244 – 10.2.186.24510.2.186.245
12410.2.186.246/3110.2.186.246 – 10.2.186.24710.2.186.247
12510.2.186.248/3110.2.186.248 – 10.2.186.24910.2.186.249
12610.2.186.250/3110.2.186.250 – 10.2.186.25110.2.186.251
12710.2.186.252/3110.2.186.252 – 10.2.186.25310.2.186.253
12810.2.186.254/3110.2.186.254 – 10.2.186.25510.2.186.255
12910.2.187.0/3110.2.187.0 – 10.2.187.110.2.187.1
13010.2.187.2/3110.2.187.2 – 10.2.187.310.2.187.3
13110.2.187.4/3110.2.187.4 – 10.2.187.510.2.187.5
13210.2.187.6/3110.2.187.6 – 10.2.187.710.2.187.7
13310.2.187.8/3110.2.187.8 – 10.2.187.910.2.187.9
13410.2.187.10/3110.2.187.10 – 10.2.187.1110.2.187.11
13510.2.187.12/3110.2.187.12 – 10.2.187.1310.2.187.13
13610.2.187.14/3110.2.187.14 – 10.2.187.1510.2.187.15
13710.2.187.16/3110.2.187.16 – 10.2.187.1710.2.187.17
13810.2.187.18/3110.2.187.18 – 10.2.187.1910.2.187.19
13910.2.187.20/3110.2.187.20 – 10.2.187.2110.2.187.21
14010.2.187.22/3110.2.187.22 – 10.2.187.2310.2.187.23
14110.2.187.24/3110.2.187.24 – 10.2.187.2510.2.187.25
14210.2.187.26/3110.2.187.26 – 10.2.187.2710.2.187.27
14310.2.187.28/3110.2.187.28 – 10.2.187.2910.2.187.29
14410.2.187.30/3110.2.187.30 – 10.2.187.3110.2.187.31
14510.2.187.32/3110.2.187.32 – 10.2.187.3310.2.187.33
14610.2.187.34/3110.2.187.34 – 10.2.187.3510.2.187.35
14710.2.187.36/3110.2.187.36 – 10.2.187.3710.2.187.37
14810.2.187.38/3110.2.187.38 – 10.2.187.3910.2.187.39
14910.2.187.40/3110.2.187.40 – 10.2.187.4110.2.187.41
15010.2.187.42/3110.2.187.42 – 10.2.187.4310.2.187.43
15110.2.187.44/3110.2.187.44 – 10.2.187.4510.2.187.45
15210.2.187.46/3110.2.187.46 – 10.2.187.4710.2.187.47
15310.2.187.48/3110.2.187.48 – 10.2.187.4910.2.187.49
15410.2.187.50/3110.2.187.50 – 10.2.187.5110.2.187.51
15510.2.187.52/3110.2.187.52 – 10.2.187.5310.2.187.53
15610.2.187.54/3110.2.187.54 – 10.2.187.5510.2.187.55
15710.2.187.56/3110.2.187.56 – 10.2.187.5710.2.187.57
15810.2.187.58/3110.2.187.58 – 10.2.187.5910.2.187.59
15910.2.187.60/3110.2.187.60 – 10.2.187.6110.2.187.61
16010.2.187.62/3110.2.187.62 – 10.2.187.6310.2.187.63
16110.2.187.64/3110.2.187.64 – 10.2.187.6510.2.187.65
16210.2.187.66/3110.2.187.66 – 10.2.187.6710.2.187.67
16310.2.187.68/3110.2.187.68 – 10.2.187.6910.2.187.69
16410.2.187.70/3110.2.187.70 – 10.2.187.7110.2.187.71
16510.2.187.72/3110.2.187.72 – 10.2.187.7310.2.187.73
16610.2.187.74/3110.2.187.74 – 10.2.187.7510.2.187.75
16710.2.187.76/3110.2.187.76 – 10.2.187.7710.2.187.77
16810.2.187.78/3110.2.187.78 – 10.2.187.7910.2.187.79
16910.2.187.80/3110.2.187.80 – 10.2.187.8110.2.187.81
17010.2.187.82/3110.2.187.82 – 10.2.187.8310.2.187.83
17110.2.187.84/3110.2.187.84 – 10.2.187.8510.2.187.85
17210.2.187.86/3110.2.187.86 – 10.2.187.8710.2.187.87
17310.2.187.88/3110.2.187.88 – 10.2.187.8910.2.187.89
17410.2.187.90/3110.2.187.90 – 10.2.187.9110.2.187.91
17510.2.187.92/3110.2.187.92 – 10.2.187.9310.2.187.93
17610.2.187.94/3110.2.187.94 – 10.2.187.9510.2.187.95
17710.2.187.96/3110.2.187.96 – 10.2.187.9710.2.187.97
17810.2.187.98/3110.2.187.98 – 10.2.187.9910.2.187.99
17910.2.187.100/3110.2.187.100 – 10.2.187.10110.2.187.101
18010.2.187.102/3110.2.187.102 – 10.2.187.10310.2.187.103
18110.2.187.104/3110.2.187.104 – 10.2.187.10510.2.187.105
18210.2.187.106/3110.2.187.106 – 10.2.187.10710.2.187.107
18310.2.187.108/3110.2.187.108 – 10.2.187.10910.2.187.109
18410.2.187.110/3110.2.187.110 – 10.2.187.11110.2.187.111
18510.2.187.112/3110.2.187.112 – 10.2.187.11310.2.187.113
18610.2.187.114/3110.2.187.114 – 10.2.187.11510.2.187.115
18710.2.187.116/3110.2.187.116 – 10.2.187.11710.2.187.117
18810.2.187.118/3110.2.187.118 – 10.2.187.11910.2.187.119
18910.2.187.120/3110.2.187.120 – 10.2.187.12110.2.187.121
19010.2.187.122/3110.2.187.122 – 10.2.187.12310.2.187.123
19110.2.187.124/3110.2.187.124 – 10.2.187.12510.2.187.125
19210.2.187.126/3110.2.187.126 – 10.2.187.12710.2.187.127
19310.2.187.128/3110.2.187.128 – 10.2.187.12910.2.187.129
19410.2.187.130/3110.2.187.130 – 10.2.187.13110.2.187.131
19510.2.187.132/3110.2.187.132 – 10.2.187.13310.2.187.133
19610.2.187.134/3110.2.187.134 – 10.2.187.13510.2.187.135
19710.2.187.136/3110.2.187.136 – 10.2.187.13710.2.187.137
19810.2.187.138/3110.2.187.138 – 10.2.187.13910.2.187.139
19910.2.187.140/3110.2.187.140 – 10.2.187.14110.2.187.141
20010.2.187.142/3110.2.187.142 – 10.2.187.14310.2.187.143
20110.2.187.144/3110.2.187.144 – 10.2.187.14510.2.187.145
20210.2.187.146/3110.2.187.146 – 10.2.187.14710.2.187.147
20310.2.187.148/3110.2.187.148 – 10.2.187.14910.2.187.149
20410.2.187.150/3110.2.187.150 – 10.2.187.15110.2.187.151
20510.2.187.152/3110.2.187.152 – 10.2.187.15310.2.187.153
20610.2.187.154/3110.2.187.154 – 10.2.187.15510.2.187.155
20710.2.187.156/3110.2.187.156 – 10.2.187.15710.2.187.157
20810.2.187.158/3110.2.187.158 – 10.2.187.15910.2.187.159
20910.2.187.160/3110.2.187.160 – 10.2.187.16110.2.187.161
21010.2.187.162/3110.2.187.162 – 10.2.187.16310.2.187.163
21110.2.187.164/3110.2.187.164 – 10.2.187.16510.2.187.165
21210.2.187.166/3110.2.187.166 – 10.2.187.16710.2.187.167
21310.2.187.168/3110.2.187.168 – 10.2.187.16910.2.187.169
21410.2.187.170/3110.2.187.170 – 10.2.187.17110.2.187.171
21510.2.187.172/3110.2.187.172 – 10.2.187.17310.2.187.173
21610.2.187.174/3110.2.187.174 – 10.2.187.17510.2.187.175
21710.2.187.176/3110.2.187.176 – 10.2.187.17710.2.187.177
21810.2.187.178/3110.2.187.178 – 10.2.187.17910.2.187.179
21910.2.187.180/3110.2.187.180 – 10.2.187.18110.2.187.181
22010.2.187.182/3110.2.187.182 – 10.2.187.18310.2.187.183
22110.2.187.184/3110.2.187.184 – 10.2.187.18510.2.187.185
22210.2.187.186/3110.2.187.186 – 10.2.187.18710.2.187.187
22310.2.187.188/3110.2.187.188 – 10.2.187.18910.2.187.189
22410.2.187.190/3110.2.187.190 – 10.2.187.19110.2.187.191
22510.2.187.192/3110.2.187.192 – 10.2.187.19310.2.187.193
22610.2.187.194/3110.2.187.194 – 10.2.187.19510.2.187.195
22710.2.187.196/3110.2.187.196 – 10.2.187.19710.2.187.197
22810.2.187.198/3110.2.187.198 – 10.2.187.19910.2.187.199
22910.2.187.200/3110.2.187.200 – 10.2.187.20110.2.187.201
23010.2.187.202/3110.2.187.202 – 10.2.187.20310.2.187.203
23110.2.187.204/3110.2.187.204 – 10.2.187.20510.2.187.205
23210.2.187.206/3110.2.187.206 – 10.2.187.20710.2.187.207
23310.2.187.208/3110.2.187.208 – 10.2.187.20910.2.187.209
23410.2.187.210/3110.2.187.210 – 10.2.187.21110.2.187.211
23510.2.187.212/3110.2.187.212 – 10.2.187.21310.2.187.213
23610.2.187.214/3110.2.187.214 – 10.2.187.21510.2.187.215
23710.2.187.216/3110.2.187.216 – 10.2.187.21710.2.187.217
23810.2.187.218/3110.2.187.218 – 10.2.187.21910.2.187.219
23910.2.187.220/3110.2.187.220 – 10.2.187.22110.2.187.221
24010.2.187.222/3110.2.187.222 – 10.2.187.22310.2.187.223
24110.2.187.224/3110.2.187.224 – 10.2.187.22510.2.187.225
24210.2.187.226/3110.2.187.226 – 10.2.187.22710.2.187.227
24310.2.187.228/3110.2.187.228 – 10.2.187.22910.2.187.229
24410.2.187.230/3110.2.187.230 – 10.2.187.23110.2.187.231
24510.2.187.232/3110.2.187.232 – 10.2.187.23310.2.187.233
24610.2.187.234/3110.2.187.234 – 10.2.187.23510.2.187.235
24710.2.187.236/3110.2.187.236 – 10.2.187.23710.2.187.237
24810.2.187.238/3110.2.187.238 – 10.2.187.23910.2.187.239
24910.2.187.240/3110.2.187.240 – 10.2.187.24110.2.187.241
25010.2.187.242/3110.2.187.242 – 10.2.187.24310.2.187.243
25110.2.187.244/3110.2.187.244 – 10.2.187.24510.2.187.245
25210.2.187.246/3110.2.187.246 – 10.2.187.24710.2.187.247
25310.2.187.248/3110.2.187.248 – 10.2.187.24910.2.187.249
25410.2.187.250/3110.2.187.250 – 10.2.187.25110.2.187.251
25510.2.187.252/3110.2.187.252 – 10.2.187.25310.2.187.253
25610.2.187.254/3110.2.187.254 – 10.2.187.25510.2.187.255
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 →