| Property | Value |
| NameServer | NS2.SAVVIS.NET |
| Created | 1995-03-02 00:00:00 |
| Changed | 2014-05-02 00:00:00 |
| Expires | 2021-03-03 00:00:00 |
| Registrar | NETWORK SOLUTIONS, L |
| Date | IP Address |
| 2023-06-15 | 52.15.107.103 (ClassC) |
| 2024-08-28 | 3.13.210.251 (ClassC) |
| 2025-09-28 | 3.18.148.24 (ClassC) |
| 2025-10-25 | 3.132.159.110 (ClassC) |
| 2025-11-13 | 3.129.78.191 (ClassC) |
| 2025-11-24 | 3.19.95.84 (ClassC) |
| Date | Domain | IP |
| dash2.century21.com | 2024-02-18 | 3.163.24.3 |
| beta.century21.com | 2024-03-10 | 3.19.178.167 |
| cms.espanol.stage.century21.com | 2024-11-24 | 13.59.50.14 |
| mobile.century21.com | 2024-04-02 | 3.134.220.65 |
| homebase.century21.com | 2025-08-12 | 198.175.44.4 |
| dash.century21.com | 2024-09-08 | 3.163.24.97 |
| uat6.dash.century21.com | 2024-08-29 | 18.161.6.29 |
| qa8.dash.century21.com | 2024-04-12 | 99.84.66.96 |
| commercial.century21.com | 2025-09-28 | 3.18.148.24 |
| cms.commercial.century21.com | 2024-05-13 | 18.221.149.87 |
| ssl.century21.com | 2025-09-07 | 18.224.239.46 |
| m.century21.com | 2013-11-27 | 65.52.106.46 |
| poc.login.century21.com | 2025-11-07 | 13.68.101.62 |
| property-video.century21.com | 2015-02-10 | 184.50.238.177 |
| uat6.solo.century21.com | 2024-04-07 | 40.76.66.246 |
| qa8.solo.century21.com | 2025-09-14 | 40.117.227.208 |
| poc.sso.century21.com | 2025-11-07 | 13.68.101.62 |
| dev.sso.century21.com | 2025-11-07 | 13.68.101.62 |
| builder.century21.com | 2024-11-07 | 204.246.191.78 |
| image.comms.century21.com | 2025-10-23 | 23.192.230.136 |
| www.century21.com | 2013-04-01 | 208.111.160.6 |