| Date | Description |
|---|---|
| 2020-10-12 | update website_status OK => DomainNotFound |
| 2019-07-30 | update website_status OK => DomainNotFound |
| 2015-05-06 | update robots_txt_status www.perryphysicsconsulting.com: 200 => 404 |
| 2015-03-29 | update robots_txt_status www.perryphysicsconsulting.com: 404 => 200 |