At Ahrefs we currently use the following IP ranges.
The range is updated once a year.

137.74.201.100
137.74.201.108
137.74.201.99
137.74.203.194
137.74.207.101
137.74.207.102
137.74.207.108
137.74.207.109
137.74.207.110
137.74.207.114
137.74.207.116
137.74.207.119
137.74.207.120
137.74.207.159
137.74.207.161
137.74.207.164
137.74.207.170
137.74.207.188
151.80.27.116
151.80.27.118
151.80.39.10
151.80.39.100
151.80.39.101
151.80.39.102
151.80.39.103
151.80.39.104
151.80.39.105
151.80.39.106
151.80.39.107
151.80.39.108
151.80.39.109
151.80.39.11
151.80.39.110
151.80.39.111
151.80.39.112
151.80.39.113
151.80.39.114
151.80.39.115
151.80.39.116
151.80.39.117
151.80.39.118
151.80.39.119
151.80.39.12
151.80.39.120
151.80.39.121
151.80.39.122
151.80.39.123
151.80.39.124
151.80.39.125
151.80.39.126
151.80.39.127
151.80.39.128
151.80.39.129
151.80.39.13
151.80.39.130
151.80.39.131
151.80.39.132
151.80.39.133
151.80.39.134
151.80.39.135
151.80.39.136
151.80.39.137
151.80.39.14
151.80.39.146
151.80.39.147
151.80.39.148
151.80.39.149
151.80.39.15
151.80.39.150
151.80.39.151
151.80.39.152
151.80.39.153
151.80.39.154
151.80.39.155
151.80.39.156
151.80.39.157
151.80.39.158
151.80.39.159
151.80.39.16
151.80.39.160
151.80.39.161
151.80.39.162
151.80.39.163
151.80.39.164
151.80.39.165
151.80.39.166
151.80.39.167
151.80.39.168
151.80.39.169
151.80.39.17
151.80.39.170
151.80.39.171
151.80.39.172
151.80.39.173
151.80.39.174
151.80.39.175
151.80.39.176
151.80.39.177
151.80.39.178
151.80.39.179
151.80.39.18
151.80.39.180
151.80.39.181
151.80.39.182
151.80.39.183
151.80.39.184
151.80.39.185
151.80.39.186
151.80.39.187
151.80.39.188
151.80.39.189
151.80.39.19
151.80.39.190
151.80.39.191
151.80.39.192
151.80.39.193
151.80.39.2
151.80.39.20
151.80.39.21
151.80.39.22
151.80.39.23
151.80.39.24
151.80.39.25
151.80.39.26
151.80.39.27
151.80.39.28
151.80.39.29
151.80.39.3
151.80.39.30
151.80.39.31
151.80.39.32
151.80.39.33
151.80.39.34
151.80.39.35
151.80.39.36
151.80.39.37
151.80.39.4
151.80.39.5
151.80.39.6
151.80.39.7
151.80.39.8
151.80.39.9
151.80.39.98
151.80.39.99
163.172.64.177
163.172.64.179
163.172.64.180
163.172.64.181
163.172.64.182
163.172.64.183
163.172.64.184
163.172.64.185
163.172.64.186
163.172.64.187
163.172.64.188
163.172.64.189
163.172.64.190
163.172.64.191
163.172.64.192
163.172.64.193
163.172.64.199
163.172.64.216
163.172.64.217
163.172.64.220
163.172.64.222
163.172.64.223
163.172.64.224
163.172.64.225
163.172.64.226
163.172.64.227
163.172.64.228
163.172.64.229
163.172.64.230
163.172.64.231
163.172.64.232
163.172.64.233
163.172.64.234
163.172.64.235
163.172.64.236
163.172.64.237
163.172.64.238
163.172.64.239
163.172.64.241
163.172.64.242
163.172.64.243
163.172.64.244
163.172.64.245
163.172.64.246
163.172.64.247
163.172.64.249
163.172.64.250
163.172.64.251
163.172.64.252
163.172.64.253
163.172.64.254
163.172.65.10
163.172.65.106
163.172.65.107
163.172.65.108
163.172.65.109
163.172.65.11
163.172.65.110
163.172.65.111
163.172.65.112
163.172.65.113
163.172.65.114
163.172.65.116
163.172.65.118
163.172.65.119
163.172.65.12
163.172.65.120
163.172.65.121
163.172.65.122
163.172.65.123
163.172.65.124
163.172.65.126
163.172.65.127
163.172.65.128
163.172.65.129
163.172.65.13
163.172.65.130
163.172.65.131
163.172.65.132
163.172.65.14
163.172.65.145
163.172.65.15
163.172.65.16
163.172.65.18
163.172.65.180
163.172.65.181
163.172.65.182
163.172.65.183
163.172.65.184
163.172.65.185
163.172.65.186
163.172.65.187
163.172.65.188
163.172.65.189
163.172.65.19
163.172.65.190
163.172.65.191
163.172.65.192
163.172.65.193
163.172.65.194
163.172.65.195
163.172.65.196
163.172.65.197
163.172.65.198
163.172.65.199
163.172.65.2
163.172.65.20
163.172.65.200
163.172.65.201
163.172.65.202
163.172.65.203
163.172.65.204
163.172.65.205
163.172.65.206
163.172.65.207
163.172.65.208
163.172.65.209
163.172.65.21
163.172.65.210
163.172.65.213
163.172.65.214
163.172.65.215
163.172.65.216
163.172.65.217
163.172.65.218
163.172.65.219
163.172.65.22
163.172.65.220
163.172.65.221
163.172.65.222
163.172.65.225
163.172.65.226
163.172.65.227
163.172.65.228
163.172.65.229
163.172.65.23
163.172.65.230
163.172.65.231
163.172.65.232
163.172.65.234
163.172.65.235
163.172.65.236
163.172.65.239
163.172.65.24
163.172.65.240
163.172.65.241
163.172.65.242
163.172.65.243
163.172.65.244
163.172.65.245
163.172.65.246
163.172.65.248
163.172.65.249
163.172.65.25
163.172.65.250
163.172.65.251
163.172.65.252
163.172.65.26
163.172.65.28
163.172.65.29
163.172.65.30
163.172.65.31
163.172.65.32
163.172.65.33
163.172.65.34
163.172.65.35
163.172.65.36
163.172.65.37
163.172.65.38
163.172.65.39
163.172.65.4
163.172.65.40
163.172.65.41
163.172.65.42
163.172.65.43
163.172.65.44
163.172.65.45
163.172.65.46
163.172.65.47
163.172.65.48
163.172.65.49
163.172.65.5
163.172.65.50
163.172.65.51
163.172.65.52
163.172.65.53
163.172.65.54
163.172.65.55
163.172.65.56
163.172.65.57
163.172.65.58
163.172.65.59
163.172.65.6
163.172.65.60
163.172.65.61
163.172.65.62
163.172.65.63
163.172.65.64
163.172.65.65
163.172.65.66
163.172.65.67
163.172.65.68
163.172.65.69
163.172.65.8
163.172.66.10
163.172.66.100
163.172.66.101
163.172.66.102
163.172.66.103
163.172.66.104
163.172.66.105
163.172.66.106
163.172.66.107
163.172.66.108
163.172.66.109
163.172.66.11
163.172.66.110
163.172.66.111
163.172.66.112
163.172.66.113
163.172.66.114
163.172.66.115
163.172.66.116
163.172.66.117
163.172.66.118
163.172.66.119
163.172.66.12
163.172.66.120
163.172.66.121
163.172.66.123
163.172.66.124
163.172.66.125
163.172.66.126
163.172.66.127
163.172.66.128
163.172.66.129
163.172.66.13
163.172.66.130
163.172.66.131
163.172.66.132
163.172.66.133
163.172.66.134
163.172.66.135
163.172.66.136
163.172.66.137
163.172.66.138
163.172.66.139
163.172.66.14
163.172.66.141
163.172.66.142
163.172.66.143
163.172.66.144
163.172.66.145
163.172.66.146
163.172.66.147
163.172.66.148
163.172.66.149
163.172.66.15
163.172.66.150
163.172.66.151
163.172.66.152
163.172.66.153
163.172.66.154
163.172.66.155
163.172.66.156
163.172.66.157
163.172.66.158
163.172.66.159
163.172.66.16
163.172.66.160
163.172.66.161
163.172.66.163
163.172.66.164
163.172.66.165
163.172.66.166
163.172.66.167
163.172.66.168
163.172.66.169
163.172.66.17
163.172.66.170
163.172.66.171
163.172.66.172
163.172.66.173
163.172.66.174
163.172.66.175
163.172.66.176
163.172.66.177
163.172.66.178
163.172.66.179
163.172.66.18
163.172.66.180
163.172.66.181
163.172.66.182
163.172.66.183
163.172.66.184
163.172.66.19
163.172.66.2
163.172.66.20
163.172.66.21
163.172.66.22
163.172.66.23
163.172.66.24
163.172.66.25
163.172.66.26
163.172.66.27
163.172.66.28
163.172.66.29
163.172.66.3
163.172.66.30
163.172.66.31
163.172.66.32
163.172.66.33
163.172.66.34
163.172.66.35
163.172.66.36
163.172.66.37
163.172.66.38
163.172.66.39
163.172.66.4
163.172.66.40
163.172.66.41
163.172.66.42
163.172.66.43
163.172.66.44
163.172.66.45
163.172.66.46
163.172.66.47
163.172.66.48
163.172.66.49
163.172.66.5
163.172.66.50
163.172.66.51
163.172.66.52
163.172.66.53
163.172.66.54
163.172.66.55
163.172.66.56
163.172.66.57
163.172.66.58
163.172.66.59
163.172.66.6
163.172.66.60
163.172.66.61
163.172.66.62
163.172.66.63
163.172.66.64
163.172.66.65
163.172.66.66
163.172.66.67
163.172.66.68
163.172.66.69
163.172.66.7
163.172.66.70
163.172.66.71
163.172.66.73
163.172.66.74
163.172.66.75
163.172.66.76
163.172.66.77
163.172.66.78
163.172.66.79
163.172.66.8
163.172.66.80
163.172.66.81
163.172.66.82
163.172.66.83
163.172.66.84
163.172.66.85
163.172.66.86
163.172.66.87
163.172.66.88
163.172.66.89
163.172.66.9
163.172.66.90
163.172.66.91
163.172.66.93
163.172.66.94
163.172.66.95
163.172.66.96
163.172.66.97
163.172.66.98
163.172.66.99
163.172.68.118
163.172.68.121
163.172.68.122
163.172.68.123
163.172.68.127
163.172.68.128
163.172.68.132
163.172.68.133
163.172.68.136
163.172.69.178
163.172.70.217
163.172.71.13
163.172.71.21
163.172.71.29
163.172.71.55
163.172.71.90
163.172.72.48
163.172.73.28
164.132.161.10
164.132.161.11
164.132.161.12
164.132.161.13
164.132.161.14
164.132.161.15
164.132.161.16
164.132.161.17
164.132.161.18
164.132.161.19
164.132.161.2
164.132.161.20
164.132.161.21
164.132.161.22
164.132.161.23
164.132.161.24
164.132.161.25
164.132.161.26
164.132.161.27
164.132.161.28
164.132.161.29
164.132.161.3
164.132.161.30
164.132.161.31
164.132.161.32
164.132.161.33
164.132.161.34
164.132.161.35
164.132.161.36
164.132.161.37
164.132.161.38
164.132.161.39
164.132.161.4
164.132.161.40
164.132.161.41
164.132.161.42
164.132.161.43
164.132.161.44
164.132.161.45
164.132.161.46
164.132.161.47
164.132.161.48
164.132.161.49
164.132.161.5
164.132.161.50
164.132.161.51
164.132.161.52
164.132.161.53
164.132.161.54
164.132.161.55
164.132.161.56
164.132.161.57
164.132.161.58
164.132.161.59
164.132.161.6
164.132.161.60
164.132.161.61
164.132.161.62
164.132.161.63
164.132.161.64
164.132.161.65
164.132.161.66
164.132.161.67
164.132.161.68
164.132.161.69
164.132.161.7
164.132.161.70
164.132.161.71
164.132.161.72
164.132.161.73
164.132.161.74
164.132.161.75
164.132.161.76
164.132.161.77
164.132.161.78
164.132.161.79
164.132.161.8
164.132.161.80
164.132.161.81
164.132.161.82
164.132.161.83
164.132.161.84
164.132.161.85
164.132.161.86
164.132.161.87
164.132.161.88
164.132.161.89
164.132.161.9
164.132.161.90
164.132.161.91
164.132.161.92
164.132.161.93
164.132.161.94
164.132.161.95
164.132.161.96
164.132.161.97
164.132.162.153
164.132.162.154
164.132.162.155
164.132.162.156
164.132.162.157
164.132.162.158
164.132.162.159
164.132.162.160
164.132.162.164
164.132.162.187
164.132.162.188
164.132.164.180
176.31.231.10
217.182.132.14
217.182.132.146
217.182.132.147
217.182.132.148
217.182.132.149
217.182.132.15
217.182.132.150
217.182.132.151
217.182.132.152
217.182.132.153
217.182.132.154
217.182.132.155
217.182.132.156
217.182.132.157
217.182.132.16
217.182.132.17
217.182.132.170
217.182.132.171
217.182.132.172
217.182.132.173
217.182.132.174
217.182.132.175
217.182.132.176
217.182.132.177
217.182.132.178
217.182.132.179
217.182.132.18
217.182.132.180
217.182.132.181
217.182.132.182
217.182.132.183
217.182.132.184
217.182.132.185
217.182.132.186
217.182.132.187
217.182.132.188
217.182.132.19
217.182.132.190
217.182.132.191
217.182.132.192
217.182.132.193
217.182.132.20
217.182.132.21
217.182.132.22
217.182.132.23
217.182.132.24
217.182.132.240
217.182.132.241
217.182.132.25
217.182.132.27
217.182.132.28
217.182.132.29
217.182.132.30
217.182.132.31
217.182.132.32
217.182.132.33
217.182.132.34
217.182.132.35
217.182.132.36
217.182.132.37
217.182.132.4
217.182.132.5
217.182.132.50
217.182.132.51
217.182.132.52
217.182.132.53
217.182.132.54
217.182.132.55
217.182.132.56
217.182.132.57
217.182.132.58
217.182.132.59
217.182.132.6
217.182.132.60
217.182.132.61
217.182.132.62
217.182.132.63
217.182.132.64
217.182.132.65
217.182.132.66
217.182.132.67
217.182.132.68
217.182.132.69
217.182.132.7
217.182.132.70
217.182.132.71
217.182.132.72
217.182.132.73
217.182.132.74
217.182.132.75
217.182.132.76
217.182.132.77
217.182.132.78
217.182.132.79
217.182.132.80
217.182.132.81
217.182.132.82
217.182.132.83
217.182.132.84
217.182.132.85
217.182.132.86
217.182.132.87
217.182.132.88
217.182.132.90
217.182.132.91
217.182.132.92
217.182.132.93
217.182.132.94
217.182.132.95
217.182.132.96
217.182.132.97
5.196.87.10
5.196.87.11
5.196.87.12
5.196.87.13
5.196.87.14
5.196.87.15
5.196.87.16
5.196.87.17
5.196.87.18
5.196.87.19
5.196.87.2
5.196.87.20
5.196.87.21
5.196.87.22
5.196.87.23
5.196.87.24
5.196.87.25
5.196.87.26
5.196.87.27
5.196.87.28
5.196.87.29
5.196.87.3
5.196.87.30
5.196.87.31
5.196.87.32
5.196.87.33
5.196.87.34
5.196.87.35
5.196.87.36
5.196.87.37
5.196.87.38
5.196.87.39
5.196.87.4
5.196.87.40
5.196.87.41
5.196.87.42
5.196.87.43
5.196.87.44
5.196.87.45
5.196.87.46
5.196.87.47
5.196.87.48
5.196.87.49
5.196.87.5
5.196.87.50
5.196.87.51
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5.196.87.53
5.196.87.54
5.196.87.55
5.196.87.56
5.196.87.58
5.196.87.59
5.196.87.6
5.196.87.60
5.196.87.61
5.196.87.62
5.196.87.63
5.196.87.66
5.196.87.67
5.196.87.68
5.196.87.69
5.196.87.7
5.196.87.70
5.196.87.71
5.196.87.72
5.196.87.8
5.196.87.9
51.255.64.106
51.255.65.10
51.255.65.11
51.255.65.12
51.255.65.13
51.255.65.14
51.255.65.15
51.255.65.16
51.255.65.17
51.255.65.18
51.255.65.19
51.255.65.2
51.255.65.20
51.255.65.21
51.255.65.22
51.255.65.224
51.255.65.23
51.255.65.24
51.255.65.25
51.255.65.26
51.255.65.27
51.255.65.28
51.255.65.29
51.255.65.3
51.255.65.30
51.255.65.31
51.255.65.32
51.255.65.33
51.255.65.34
51.255.65.35
51.255.65.36
51.255.65.37
51.255.65.38
51.255.65.39
51.255.65.4
51.255.65.40
51.255.65.41
51.255.65.42
51.255.65.43
51.255.65.44
51.255.65.45
51.255.65.46
51.255.65.47
51.255.65.48
51.255.65.49
51.255.65.5
51.255.65.50
51.255.65.51
51.255.65.52
51.255.65.53
51.255.65.54
51.255.65.55
51.255.65.56
51.255.65.57
51.255.65.58
51.255.65.59
51.255.65.6
51.255.65.60
51.255.65.61
51.255.65.62
51.255.65.63
51.255.65.64
51.255.65.65
51.255.65.66
51.255.65.67
51.255.65.68
51.255.65.69
51.255.65.7
51.255.65.70
51.255.65.71
51.255.65.72
51.255.65.73
51.255.65.74
51.255.65.75
51.255.65.76
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51.255.66.100
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51.255.66.98
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51.255.71.100
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51.255.71.111
51.255.71.112
51.255.71.113
51.255.71.114
51.255.71.115
51.255.71.116
51.255.71.117
51.255.71.118
51.255.71.119
51.255.71.120
51.255.71.121
51.255.71.122
51.255.71.123
51.255.71.125
51.255.71.126
51.255.71.127
51.255.71.128
51.255.71.129
51.255.71.130
51.255.71.131
51.255.71.132
51.255.71.133
51.255.71.98

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