| Date | Domain | IP |
| alexa.playground.blackboardcdn.com | 2024-08-29 | 18.161.6.97 |
| learn.playground.blackboardcdn.com | 2025-07-16 | 18.161.6.43 |
| kloudless.playground.blackboardcdn.com | 2025-07-31 | 172.64.149.251 |
| ultra.content.playground.blackboardcdn.com | 2024-06-15 | 172.64.150.233 |
| learn.content.playground.blackboardcdn.com | 2024-06-15 | 172.64.150.233 |
| alexa-new.playground.blackboardcdn.com | 2024-07-23 | 99.84.66.10 |