| Property | Value |
| Location | Cambridge, United States |
| Country | United States |
| Domain | Date |
| duolingo-spam-control-prod-edge.duolingo.com | 2024-06-10 |
| friends-prod.duolingo.com | 2024-06-06 |
| billing.bookingfactory.io | 2022-06-05 |
| billing.flatratenow.net | 2022-06-05 |
| cd2.chargebee.com | 2022-06-05 |
| subscribe.paypercustomer.co.uk | 2022-06-05 |
| subscription.ansarada.com | 2022-06-05 |