| Date | Description |
|---|---|
| 2019-04-20 | update robots_txt_status www.polyferm.com: 404 => 200 |
| 2016-04-08 | delete source_ip 66.96.160.149 |
| 2016-04-08 | insert source_ip 66.96.149.1 |
| 2015-06-11 | delete alias PolyFerm Canada Inc. |
| 2014-05-08 | update description |
| 2013-11-09 | update website_status Disallowed => OK |