| Property | Value |
| Location | Cambridge, United States |
| Country | United States |
| Domain | Date |
| us3.mailchimp.com | 2020-05-28 |
| us5.mailchimp.com | 2020-05-23 |
| us1.mailchimp.com | 2020-04-20 |
| us20.campaign-archive.com | 2020-04-18 |
| us1.campaign-archive.com | 2019-03-08 |
| us10.list-manage.com | 2018-11-23 |
| us8.forward-to-friend.com | 2018-11-22 |
| us5.campaign-archive2.com | 2018-11-18 |
| bobbooks.us2.list-manage1.com | 2018-08-05 |