| Property | Value |
| webmaster@costargroup.com | |
| NameServer | NS2.COSTAR.COM |
| Created | 1996-10-24 00:00:00 |
| Changed | 2015-07-21 00:00:00 |
| Expires | 2018-10-23 00:00:00 |
| Registrar | MARKMONITOR INC. |
| Date | IP Address |
| 2019-08-17 | 165.254.94.235 (ClassC) |
| 2019-08-17 | 165.254.95.58 (ClassC) |
| 2024-11-25 | 23.46.17.61 (ClassC) |
| 2025-03-15 | 104.100.168.154 (ClassC) |
| 2025-04-17 | 23.46.228.177 (ClassC) |
| 2025-04-30 | 23.46.228.176 (ClassC) |