| Property | Value |
| host.master@21st.com | |
| NameServer | DMTU.MT.NS.ELS-GMS.ATT.NET |
| Created | 1994-12-08 00:00:00 |
| Changed | 2012-08-16 00:00:00 |
| Expires | 2016-12-07 00:00:00 |
| Registrar | MARKMONITOR INC. |
| Date | IP Address |
| 2014-06-06 | 63.148.46.62 (ClassC) |
| 2024-12-28 | 45.60.122.143 (ClassC) |
| 2025-01-12 | 45.60.132.143 (ClassC) |
| Date | Domain | IP |
| n10.21st.com | 2024-12-13 | 45.60.152.113 |
| NS2.21ST.COM | 2024-12-13 | 12.177.226.27 |
| proxypoc.21st.com | 2024-11-25 | 45.60.12.23 |
| f.e.21st.com | 2024-12-13 | 208.45.133.108 |
| m.21st.com | 2025-01-03 | 45.60.12.23 |
| claims.21st.com | 2024-10-17 | 104.92.252.92 |
| www.21st.com | 2024-12-13 | 45.60.152.113 |