static.vdc.vn is regular content scraper, but it did POST to me and left its IP address. I have been trying to track this one down for a while, but it uses such a wide variety of IP addresses that this is difficult. I could ban large ranges but this would also ban a wide swath of Vietnam, which I do not wish.
Observation:
static.vdc.vn 113.160.112.9 2017-feb-27
static.vdc.vn 113.160.141.120 2016-nov-03
static.vdc.vn 113.160.198.115 2017-jan-14
static.vdc.vn 113.160.248.143 2016-nov-22
static.vdc.vn 113.161.6.96 2016-oct-31
static.vdc.vn 113.161.71.3 2017-jan-18
static.vdc.vn 113.161.77.63
static.vdc.vn 113.161.90.11 2016-dec-27
static.vdc.vn 113.161.162.64 2017-feb-20
dynamic.vdc.vn 113.162.185.98 2016-dec-26
dynamic.vdc.vn 113.163.110.14 2017-jan-30
dynamic.vdc.vn 113.163.202.82
dynamic.vdc.vn 113.163.233.155 2017-jan-23
dynamic.vdc.vn 113.163.241.225 2016-dec-18
dynamic.vdc.com.vn 113.176.61.178 2017-jan-22
dynamic.vdc.vn 113.190.55.36 2016-oct-21
dynamic.vdc.vn 113.190.135.160 2017-feb-08
dynamic.vdc.vn 113.190.202.218 2017-jan-09
dynamic.vdc.vn 113.191.253.253 2016-nov-21
dynamic.vdc.vn 123.24.112.23 2016-nov-25
static.vdc.vn 123.30.238.16 2016-nov-03
static.vdc.vn 123.30.245.239 2016-dec-23
static.vdc.vn host name 203.162.0.78 actual 123.30.75.115
coccoc.com, a vn search engine, who visits me, seems to use 123.30.175.29, suspiciously close to static.vdc.vn. I’ll separate these two IPs and see if any spamming reoccurs.
There is also dynamic.vdc.vn, which I cannot track down.
Pattern:
Few of the third octets are repeated, unfortunately, but certainly 123.30.175. is logical to ban. The host name is fake. If you look up the IP you will get static.vdc.vn, but do the corollary and there are an innumerable number of IPs that have this host name.
Research:
113.160.132.161
113.160.133.202
113.160.156.80
113.160.178.28
113.160.180.106
113.160.202.107
113.160.202.211
113.160.225.240
113.160.250.41
113.161.0.31
113.161.6.188
113.161.26.20
113.161.35.18
113.161.37.40
113.161.70.81
113.161.71.109
113.161.71.204
113.161.76.170
113.161.77.184
113.161.82.108
113.161.90.29
113.161.90.191
113.161.96.5
113.161.128.136
113.161.194.254
113.161.196.10
113.161.197.128
113.161.198.196
113.161.206.9
113.161.220.28
113.171.16.10
113.191.251.66
123.25.36.88
123.25.47.196
123.25.151.55
123.25.161.183
123.25.208.156
123.25.226.83
123.30.50.111
123.30.53.1
123.30.63.94
123.30.120.65
123.30.127.253
123.30.128.21
123.30.130.215
123.30.143.21
123.30.143.7
123.30.149.108
123.30.171.251
123.30.175.177 123.30.175.0/24
123.30.175.215
123.30.175.216
123.30.175.217
123.30.175.218
123.30.175.222
123.30.175.224
123.30.175.226
123.30.175.229
123.30.175.230
123.30.175.79
123.30.176.242
123.30.177.51
123.30.183.14
123.30.187.201
123.30.188.25
123.30.214.190
123.30.235.163
123.30.238.16
123.30.240.66
123.30.245.222
123.30.245.224
190.232.70.148
222.255.27.150
222.255.29.106
222.255.78.114
222.255.100.3
222.255.121.202
222.255.165.22
dynamic.vdc.vn also has a long list of random IPs.
113.163.8.146
113.163.77.4
113.163.94
113.163.154.7
113.163.156.8
113.163.172.4
113.164.14.119
113.166.183.180
113.176.13.2
113.190.6.71
113.190.51.232
113.190.88.29
113.190.100.134
113.190.160.1
113.190.164.178
113.190.165.17
113.190.170.60
123.24.71.151
123.30.221.178
123.30.250.43
203.162.0.11
213.174.22.114
222.255.216.99
222.255.216.122
222.255.234.1
222.255.41.195