| Date | Description |
|---|---|
| 2023-09-30 | insert index_pages_linkeddomain r-project.org |
| 2023-09-30 | update description |
| 2018-04-10 | update robots_txt_status www.ef-prime.com: 0 => 404 |
| 2016-07-16 | insert index_pages_linkeddomain analyticflow.com |
| 2014-12-16 | insert index_pages_linkeddomain stat.ucla.edu |