| Property | Value |
| NameServer | NS48.WORLDNIC.COM |
| Created | 1997-04-04 00:00:00 |
| Changed | 2012-12-14 00:00:00 |
| Expires | 2018-04-05 00:00:00 |
| Registrar | NETWORK SOLUTIONS, L |
| Date | IP Address |
| 2024-07-29 | 141.193.213.11 (ClassC) |
| 2024-11-07 | 141.193.213.10 (ClassC) |
| 2025-04-04 | 159.180.132.176 (ClassC) |
| Date | Domain | IP |
| investor.immunogen.com | 2024-08-10 | 23.46.228.173 |
| www.immunogen.com | 2023-08-04 | 141.193.213.10 |