| Property | Value |
| webmaster@costargroup.com | |
| NameServer | NS2.NCI.COM |
| Created | 1998-10-06 00:00:00 |
| Changed | 2015-08-25 00:00:00 |
| Expires | 2019-10-05 00:00:00 |
| Registrar | MARKMONITOR INC. |
| Date | IP Address |
| 2018-10-01 | 104.91.166.8 (ClassC) |
| 2018-11-25 | 67.132.30.137 (ClassC) |
| 2018-11-25 | 67.132.30.139 (ClassC) |
| 2018-12-11 | 23.63.227.16 (ClassC) |
| 2019-04-05 | 23.54.162.72 (ClassC) |
| 2019-09-13 | 23.50.52.88 (ClassC) |
| 2021-08-05 | 184.25.113.139 (ClassC) |
| 2024-07-01 | 23.219.78.168 (ClassC) |
| 2024-07-18 | 23.213.34.134 (ClassC) |
| 2024-08-04 | 23.213.175.203 (ClassC) |
| 2024-08-19 | 23.213.34.142 (ClassC) |
| 2024-09-09 | 23.35.98.24 (ClassC) |
| 2024-10-02 | 23.55.168.211 (ClassC) |
| 2024-12-12 | 23.219.78.41 (ClassC) |
| 2025-02-23 | 104.96.163.82 (ClassC) |
| 2025-04-19 | 23.46.228.7 (ClassC) |
| 2025-04-25 | 23.213.175.184 (ClassC) |
| 2025-05-03 | 23.46.228.14 (ClassC) |