| Date | IP Address |
| 2013-10-29 | 216.222.148.100 (ClassC) |
| 2014-11-16 | 216.222.144.16 (ClassC) |
| 2024-07-05 | 23.185.0.3 (ClassC) |
| 2024-11-09 | 23.185.0.1 (ClassC) |
| Date | Domain | IP |
| www2.ttec.com | 2023-08-04 | 34.237.219.119 |
| horizon-asia.ttec.com | 2024-10-15 | 20.205.148.96 |
| horizon.ttec.com | 2024-11-03 | 20.109.128.199 |
| investors.ttec.com | 2024-07-26 | 23.46.17.18 |
| horizon-us.ttec.com | 2023-08-25 | 20.242.218.230 |
| astt.ttec.com | 2024-08-17 | 20.252.48.224 |
| www.ttec.com | 2024-03-19 | 23.185.0.3 |