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)10.45.30.0/24
network10.45.30.0/24
broadcast10.45.30.255
first host10.45.30.1
last host10.45.30.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.45.30.0/24
address00001010.00101101.00011110.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00101101.00011110.00000000
broadcast00001010.00101101.00011110.11111111
green = network part, grey = host part
hex0x0a2d1e00
decimal170728960
reverse dns0.30.45.10.in-addr.arpa
ipv4-mapped::ffff:a2d:1e00

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.45.30.0/3210.45.30.0 – 10.45.30.010.45.30.0
210.45.30.1/3210.45.30.1 – 10.45.30.110.45.30.1
310.45.30.2/3210.45.30.2 – 10.45.30.210.45.30.2
410.45.30.3/3210.45.30.3 – 10.45.30.310.45.30.3
510.45.30.4/3210.45.30.4 – 10.45.30.410.45.30.4
610.45.30.5/3210.45.30.5 – 10.45.30.510.45.30.5
710.45.30.6/3210.45.30.6 – 10.45.30.610.45.30.6
810.45.30.7/3210.45.30.7 – 10.45.30.710.45.30.7
910.45.30.8/3210.45.30.8 – 10.45.30.810.45.30.8
1010.45.30.9/3210.45.30.9 – 10.45.30.910.45.30.9
1110.45.30.10/3210.45.30.10 – 10.45.30.1010.45.30.10
1210.45.30.11/3210.45.30.11 – 10.45.30.1110.45.30.11
1310.45.30.12/3210.45.30.12 – 10.45.30.1210.45.30.12
1410.45.30.13/3210.45.30.13 – 10.45.30.1310.45.30.13
1510.45.30.14/3210.45.30.14 – 10.45.30.1410.45.30.14
1610.45.30.15/3210.45.30.15 – 10.45.30.1510.45.30.15
1710.45.30.16/3210.45.30.16 – 10.45.30.1610.45.30.16
1810.45.30.17/3210.45.30.17 – 10.45.30.1710.45.30.17
1910.45.30.18/3210.45.30.18 – 10.45.30.1810.45.30.18
2010.45.30.19/3210.45.30.19 – 10.45.30.1910.45.30.19
2110.45.30.20/3210.45.30.20 – 10.45.30.2010.45.30.20
2210.45.30.21/3210.45.30.21 – 10.45.30.2110.45.30.21
2310.45.30.22/3210.45.30.22 – 10.45.30.2210.45.30.22
2410.45.30.23/3210.45.30.23 – 10.45.30.2310.45.30.23
2510.45.30.24/3210.45.30.24 – 10.45.30.2410.45.30.24
2610.45.30.25/3210.45.30.25 – 10.45.30.2510.45.30.25
2710.45.30.26/3210.45.30.26 – 10.45.30.2610.45.30.26
2810.45.30.27/3210.45.30.27 – 10.45.30.2710.45.30.27
2910.45.30.28/3210.45.30.28 – 10.45.30.2810.45.30.28
3010.45.30.29/3210.45.30.29 – 10.45.30.2910.45.30.29
3110.45.30.30/3210.45.30.30 – 10.45.30.3010.45.30.30
3210.45.30.31/3210.45.30.31 – 10.45.30.3110.45.30.31
3310.45.30.32/3210.45.30.32 – 10.45.30.3210.45.30.32
3410.45.30.33/3210.45.30.33 – 10.45.30.3310.45.30.33
3510.45.30.34/3210.45.30.34 – 10.45.30.3410.45.30.34
3610.45.30.35/3210.45.30.35 – 10.45.30.3510.45.30.35
3710.45.30.36/3210.45.30.36 – 10.45.30.3610.45.30.36
3810.45.30.37/3210.45.30.37 – 10.45.30.3710.45.30.37
3910.45.30.38/3210.45.30.38 – 10.45.30.3810.45.30.38
4010.45.30.39/3210.45.30.39 – 10.45.30.3910.45.30.39
4110.45.30.40/3210.45.30.40 – 10.45.30.4010.45.30.40
4210.45.30.41/3210.45.30.41 – 10.45.30.4110.45.30.41
4310.45.30.42/3210.45.30.42 – 10.45.30.4210.45.30.42
4410.45.30.43/3210.45.30.43 – 10.45.30.4310.45.30.43
4510.45.30.44/3210.45.30.44 – 10.45.30.4410.45.30.44
4610.45.30.45/3210.45.30.45 – 10.45.30.4510.45.30.45
4710.45.30.46/3210.45.30.46 – 10.45.30.4610.45.30.46
4810.45.30.47/3210.45.30.47 – 10.45.30.4710.45.30.47
4910.45.30.48/3210.45.30.48 – 10.45.30.4810.45.30.48
5010.45.30.49/3210.45.30.49 – 10.45.30.4910.45.30.49
5110.45.30.50/3210.45.30.50 – 10.45.30.5010.45.30.50
5210.45.30.51/3210.45.30.51 – 10.45.30.5110.45.30.51
5310.45.30.52/3210.45.30.52 – 10.45.30.5210.45.30.52
5410.45.30.53/3210.45.30.53 – 10.45.30.5310.45.30.53
5510.45.30.54/3210.45.30.54 – 10.45.30.5410.45.30.54
5610.45.30.55/3210.45.30.55 – 10.45.30.5510.45.30.55
5710.45.30.56/3210.45.30.56 – 10.45.30.5610.45.30.56
5810.45.30.57/3210.45.30.57 – 10.45.30.5710.45.30.57
5910.45.30.58/3210.45.30.58 – 10.45.30.5810.45.30.58
6010.45.30.59/3210.45.30.59 – 10.45.30.5910.45.30.59
6110.45.30.60/3210.45.30.60 – 10.45.30.6010.45.30.60
6210.45.30.61/3210.45.30.61 – 10.45.30.6110.45.30.61
6310.45.30.62/3210.45.30.62 – 10.45.30.6210.45.30.62
6410.45.30.63/3210.45.30.63 – 10.45.30.6310.45.30.63
6510.45.30.64/3210.45.30.64 – 10.45.30.6410.45.30.64
6610.45.30.65/3210.45.30.65 – 10.45.30.6510.45.30.65
6710.45.30.66/3210.45.30.66 – 10.45.30.6610.45.30.66
6810.45.30.67/3210.45.30.67 – 10.45.30.6710.45.30.67
6910.45.30.68/3210.45.30.68 – 10.45.30.6810.45.30.68
7010.45.30.69/3210.45.30.69 – 10.45.30.6910.45.30.69
7110.45.30.70/3210.45.30.70 – 10.45.30.7010.45.30.70
7210.45.30.71/3210.45.30.71 – 10.45.30.7110.45.30.71
7310.45.30.72/3210.45.30.72 – 10.45.30.7210.45.30.72
7410.45.30.73/3210.45.30.73 – 10.45.30.7310.45.30.73
7510.45.30.74/3210.45.30.74 – 10.45.30.7410.45.30.74
7610.45.30.75/3210.45.30.75 – 10.45.30.7510.45.30.75
7710.45.30.76/3210.45.30.76 – 10.45.30.7610.45.30.76
7810.45.30.77/3210.45.30.77 – 10.45.30.7710.45.30.77
7910.45.30.78/3210.45.30.78 – 10.45.30.7810.45.30.78
8010.45.30.79/3210.45.30.79 – 10.45.30.7910.45.30.79
8110.45.30.80/3210.45.30.80 – 10.45.30.8010.45.30.80
8210.45.30.81/3210.45.30.81 – 10.45.30.8110.45.30.81
8310.45.30.82/3210.45.30.82 – 10.45.30.8210.45.30.82
8410.45.30.83/3210.45.30.83 – 10.45.30.8310.45.30.83
8510.45.30.84/3210.45.30.84 – 10.45.30.8410.45.30.84
8610.45.30.85/3210.45.30.85 – 10.45.30.8510.45.30.85
8710.45.30.86/3210.45.30.86 – 10.45.30.8610.45.30.86
8810.45.30.87/3210.45.30.87 – 10.45.30.8710.45.30.87
8910.45.30.88/3210.45.30.88 – 10.45.30.8810.45.30.88
9010.45.30.89/3210.45.30.89 – 10.45.30.8910.45.30.89
9110.45.30.90/3210.45.30.90 – 10.45.30.9010.45.30.90
9210.45.30.91/3210.45.30.91 – 10.45.30.9110.45.30.91
9310.45.30.92/3210.45.30.92 – 10.45.30.9210.45.30.92
9410.45.30.93/3210.45.30.93 – 10.45.30.9310.45.30.93
9510.45.30.94/3210.45.30.94 – 10.45.30.9410.45.30.94
9610.45.30.95/3210.45.30.95 – 10.45.30.9510.45.30.95
9710.45.30.96/3210.45.30.96 – 10.45.30.9610.45.30.96
9810.45.30.97/3210.45.30.97 – 10.45.30.9710.45.30.97
9910.45.30.98/3210.45.30.98 – 10.45.30.9810.45.30.98
10010.45.30.99/3210.45.30.99 – 10.45.30.9910.45.30.99
10110.45.30.100/3210.45.30.100 – 10.45.30.10010.45.30.100
10210.45.30.101/3210.45.30.101 – 10.45.30.10110.45.30.101
10310.45.30.102/3210.45.30.102 – 10.45.30.10210.45.30.102
10410.45.30.103/3210.45.30.103 – 10.45.30.10310.45.30.103
10510.45.30.104/3210.45.30.104 – 10.45.30.10410.45.30.104
10610.45.30.105/3210.45.30.105 – 10.45.30.10510.45.30.105
10710.45.30.106/3210.45.30.106 – 10.45.30.10610.45.30.106
10810.45.30.107/3210.45.30.107 – 10.45.30.10710.45.30.107
10910.45.30.108/3210.45.30.108 – 10.45.30.10810.45.30.108
11010.45.30.109/3210.45.30.109 – 10.45.30.10910.45.30.109
11110.45.30.110/3210.45.30.110 – 10.45.30.11010.45.30.110
11210.45.30.111/3210.45.30.111 – 10.45.30.11110.45.30.111
11310.45.30.112/3210.45.30.112 – 10.45.30.11210.45.30.112
11410.45.30.113/3210.45.30.113 – 10.45.30.11310.45.30.113
11510.45.30.114/3210.45.30.114 – 10.45.30.11410.45.30.114
11610.45.30.115/3210.45.30.115 – 10.45.30.11510.45.30.115
11710.45.30.116/3210.45.30.116 – 10.45.30.11610.45.30.116
11810.45.30.117/3210.45.30.117 – 10.45.30.11710.45.30.117
11910.45.30.118/3210.45.30.118 – 10.45.30.11810.45.30.118
12010.45.30.119/3210.45.30.119 – 10.45.30.11910.45.30.119
12110.45.30.120/3210.45.30.120 – 10.45.30.12010.45.30.120
12210.45.30.121/3210.45.30.121 – 10.45.30.12110.45.30.121
12310.45.30.122/3210.45.30.122 – 10.45.30.12210.45.30.122
12410.45.30.123/3210.45.30.123 – 10.45.30.12310.45.30.123
12510.45.30.124/3210.45.30.124 – 10.45.30.12410.45.30.124
12610.45.30.125/3210.45.30.125 – 10.45.30.12510.45.30.125
12710.45.30.126/3210.45.30.126 – 10.45.30.12610.45.30.126
12810.45.30.127/3210.45.30.127 – 10.45.30.12710.45.30.127
12910.45.30.128/3210.45.30.128 – 10.45.30.12810.45.30.128
13010.45.30.129/3210.45.30.129 – 10.45.30.12910.45.30.129
13110.45.30.130/3210.45.30.130 – 10.45.30.13010.45.30.130
13210.45.30.131/3210.45.30.131 – 10.45.30.13110.45.30.131
13310.45.30.132/3210.45.30.132 – 10.45.30.13210.45.30.132
13410.45.30.133/3210.45.30.133 – 10.45.30.13310.45.30.133
13510.45.30.134/3210.45.30.134 – 10.45.30.13410.45.30.134
13610.45.30.135/3210.45.30.135 – 10.45.30.13510.45.30.135
13710.45.30.136/3210.45.30.136 – 10.45.30.13610.45.30.136
13810.45.30.137/3210.45.30.137 – 10.45.30.13710.45.30.137
13910.45.30.138/3210.45.30.138 – 10.45.30.13810.45.30.138
14010.45.30.139/3210.45.30.139 – 10.45.30.13910.45.30.139
14110.45.30.140/3210.45.30.140 – 10.45.30.14010.45.30.140
14210.45.30.141/3210.45.30.141 – 10.45.30.14110.45.30.141
14310.45.30.142/3210.45.30.142 – 10.45.30.14210.45.30.142
14410.45.30.143/3210.45.30.143 – 10.45.30.14310.45.30.143
14510.45.30.144/3210.45.30.144 – 10.45.30.14410.45.30.144
14610.45.30.145/3210.45.30.145 – 10.45.30.14510.45.30.145
14710.45.30.146/3210.45.30.146 – 10.45.30.14610.45.30.146
14810.45.30.147/3210.45.30.147 – 10.45.30.14710.45.30.147
14910.45.30.148/3210.45.30.148 – 10.45.30.14810.45.30.148
15010.45.30.149/3210.45.30.149 – 10.45.30.14910.45.30.149
15110.45.30.150/3210.45.30.150 – 10.45.30.15010.45.30.150
15210.45.30.151/3210.45.30.151 – 10.45.30.15110.45.30.151
15310.45.30.152/3210.45.30.152 – 10.45.30.15210.45.30.152
15410.45.30.153/3210.45.30.153 – 10.45.30.15310.45.30.153
15510.45.30.154/3210.45.30.154 – 10.45.30.15410.45.30.154
15610.45.30.155/3210.45.30.155 – 10.45.30.15510.45.30.155
15710.45.30.156/3210.45.30.156 – 10.45.30.15610.45.30.156
15810.45.30.157/3210.45.30.157 – 10.45.30.15710.45.30.157
15910.45.30.158/3210.45.30.158 – 10.45.30.15810.45.30.158
16010.45.30.159/3210.45.30.159 – 10.45.30.15910.45.30.159
16110.45.30.160/3210.45.30.160 – 10.45.30.16010.45.30.160
16210.45.30.161/3210.45.30.161 – 10.45.30.16110.45.30.161
16310.45.30.162/3210.45.30.162 – 10.45.30.16210.45.30.162
16410.45.30.163/3210.45.30.163 – 10.45.30.16310.45.30.163
16510.45.30.164/3210.45.30.164 – 10.45.30.16410.45.30.164
16610.45.30.165/3210.45.30.165 – 10.45.30.16510.45.30.165
16710.45.30.166/3210.45.30.166 – 10.45.30.16610.45.30.166
16810.45.30.167/3210.45.30.167 – 10.45.30.16710.45.30.167
16910.45.30.168/3210.45.30.168 – 10.45.30.16810.45.30.168
17010.45.30.169/3210.45.30.169 – 10.45.30.16910.45.30.169
17110.45.30.170/3210.45.30.170 – 10.45.30.17010.45.30.170
17210.45.30.171/3210.45.30.171 – 10.45.30.17110.45.30.171
17310.45.30.172/3210.45.30.172 – 10.45.30.17210.45.30.172
17410.45.30.173/3210.45.30.173 – 10.45.30.17310.45.30.173
17510.45.30.174/3210.45.30.174 – 10.45.30.17410.45.30.174
17610.45.30.175/3210.45.30.175 – 10.45.30.17510.45.30.175
17710.45.30.176/3210.45.30.176 – 10.45.30.17610.45.30.176
17810.45.30.177/3210.45.30.177 – 10.45.30.17710.45.30.177
17910.45.30.178/3210.45.30.178 – 10.45.30.17810.45.30.178
18010.45.30.179/3210.45.30.179 – 10.45.30.17910.45.30.179
18110.45.30.180/3210.45.30.180 – 10.45.30.18010.45.30.180
18210.45.30.181/3210.45.30.181 – 10.45.30.18110.45.30.181
18310.45.30.182/3210.45.30.182 – 10.45.30.18210.45.30.182
18410.45.30.183/3210.45.30.183 – 10.45.30.18310.45.30.183
18510.45.30.184/3210.45.30.184 – 10.45.30.18410.45.30.184
18610.45.30.185/3210.45.30.185 – 10.45.30.18510.45.30.185
18710.45.30.186/3210.45.30.186 – 10.45.30.18610.45.30.186
18810.45.30.187/3210.45.30.187 – 10.45.30.18710.45.30.187
18910.45.30.188/3210.45.30.188 – 10.45.30.18810.45.30.188
19010.45.30.189/3210.45.30.189 – 10.45.30.18910.45.30.189
19110.45.30.190/3210.45.30.190 – 10.45.30.19010.45.30.190
19210.45.30.191/3210.45.30.191 – 10.45.30.19110.45.30.191
19310.45.30.192/3210.45.30.192 – 10.45.30.19210.45.30.192
19410.45.30.193/3210.45.30.193 – 10.45.30.19310.45.30.193
19510.45.30.194/3210.45.30.194 – 10.45.30.19410.45.30.194
19610.45.30.195/3210.45.30.195 – 10.45.30.19510.45.30.195
19710.45.30.196/3210.45.30.196 – 10.45.30.19610.45.30.196
19810.45.30.197/3210.45.30.197 – 10.45.30.19710.45.30.197
19910.45.30.198/3210.45.30.198 – 10.45.30.19810.45.30.198
20010.45.30.199/3210.45.30.199 – 10.45.30.19910.45.30.199
20110.45.30.200/3210.45.30.200 – 10.45.30.20010.45.30.200
20210.45.30.201/3210.45.30.201 – 10.45.30.20110.45.30.201
20310.45.30.202/3210.45.30.202 – 10.45.30.20210.45.30.202
20410.45.30.203/3210.45.30.203 – 10.45.30.20310.45.30.203
20510.45.30.204/3210.45.30.204 – 10.45.30.20410.45.30.204
20610.45.30.205/3210.45.30.205 – 10.45.30.20510.45.30.205
20710.45.30.206/3210.45.30.206 – 10.45.30.20610.45.30.206
20810.45.30.207/3210.45.30.207 – 10.45.30.20710.45.30.207
20910.45.30.208/3210.45.30.208 – 10.45.30.20810.45.30.208
21010.45.30.209/3210.45.30.209 – 10.45.30.20910.45.30.209
21110.45.30.210/3210.45.30.210 – 10.45.30.21010.45.30.210
21210.45.30.211/3210.45.30.211 – 10.45.30.21110.45.30.211
21310.45.30.212/3210.45.30.212 – 10.45.30.21210.45.30.212
21410.45.30.213/3210.45.30.213 – 10.45.30.21310.45.30.213
21510.45.30.214/3210.45.30.214 – 10.45.30.21410.45.30.214
21610.45.30.215/3210.45.30.215 – 10.45.30.21510.45.30.215
21710.45.30.216/3210.45.30.216 – 10.45.30.21610.45.30.216
21810.45.30.217/3210.45.30.217 – 10.45.30.21710.45.30.217
21910.45.30.218/3210.45.30.218 – 10.45.30.21810.45.30.218
22010.45.30.219/3210.45.30.219 – 10.45.30.21910.45.30.219
22110.45.30.220/3210.45.30.220 – 10.45.30.22010.45.30.220
22210.45.30.221/3210.45.30.221 – 10.45.30.22110.45.30.221
22310.45.30.222/3210.45.30.222 – 10.45.30.22210.45.30.222
22410.45.30.223/3210.45.30.223 – 10.45.30.22310.45.30.223
22510.45.30.224/3210.45.30.224 – 10.45.30.22410.45.30.224
22610.45.30.225/3210.45.30.225 – 10.45.30.22510.45.30.225
22710.45.30.226/3210.45.30.226 – 10.45.30.22610.45.30.226
22810.45.30.227/3210.45.30.227 – 10.45.30.22710.45.30.227
22910.45.30.228/3210.45.30.228 – 10.45.30.22810.45.30.228
23010.45.30.229/3210.45.30.229 – 10.45.30.22910.45.30.229
23110.45.30.230/3210.45.30.230 – 10.45.30.23010.45.30.230
23210.45.30.231/3210.45.30.231 – 10.45.30.23110.45.30.231
23310.45.30.232/3210.45.30.232 – 10.45.30.23210.45.30.232
23410.45.30.233/3210.45.30.233 – 10.45.30.23310.45.30.233
23510.45.30.234/3210.45.30.234 – 10.45.30.23410.45.30.234
23610.45.30.235/3210.45.30.235 – 10.45.30.23510.45.30.235
23710.45.30.236/3210.45.30.236 – 10.45.30.23610.45.30.236
23810.45.30.237/3210.45.30.237 – 10.45.30.23710.45.30.237
23910.45.30.238/3210.45.30.238 – 10.45.30.23810.45.30.238
24010.45.30.239/3210.45.30.239 – 10.45.30.23910.45.30.239
24110.45.30.240/3210.45.30.240 – 10.45.30.24010.45.30.240
24210.45.30.241/3210.45.30.241 – 10.45.30.24110.45.30.241
24310.45.30.242/3210.45.30.242 – 10.45.30.24210.45.30.242
24410.45.30.243/3210.45.30.243 – 10.45.30.24310.45.30.243
24510.45.30.244/3210.45.30.244 – 10.45.30.24410.45.30.244
24610.45.30.245/3210.45.30.245 – 10.45.30.24510.45.30.245
24710.45.30.246/3210.45.30.246 – 10.45.30.24610.45.30.246
24810.45.30.247/3210.45.30.247 – 10.45.30.24710.45.30.247
24910.45.30.248/3210.45.30.248 – 10.45.30.24810.45.30.248
25010.45.30.249/3210.45.30.249 – 10.45.30.24910.45.30.249
25110.45.30.250/3210.45.30.250 – 10.45.30.25010.45.30.250
25210.45.30.251/3210.45.30.251 – 10.45.30.25110.45.30.251
25310.45.30.252/3210.45.30.252 – 10.45.30.25210.45.30.252
25410.45.30.253/3210.45.30.253 – 10.45.30.25310.45.30.253
25510.45.30.254/3210.45.30.254 – 10.45.30.25410.45.30.254
25610.45.30.255/3210.45.30.255 – 10.45.30.25510.45.30.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /24
/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-
/23255.255.254.0512510-
/24255.255.255.02562541
/25255.255.255.1281281262 split →
/26255.255.255.19264624 split →
/27255.255.255.22432308 split →
/28255.255.255.240161416 split →
/29255.255.255.2488632 split →
/30255.255.255.2524264 split →
/31255.255.255.25422128 split →
/32255.255.255.25511256 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 →