| Date | IP Address |
| 2014-11-12 | 90.156.201.26 (ClassC) |
| 2014-11-12 | 90.156.201.32 (ClassC) |
| 2026-02-21 | 37.140.192.32 (ClassC) |
| Date | Domain | IP |
| rd1.istk.ru | 2025-07-30 | 31.13.34.146 |
| mx1.istk.ru | 2025-06-30 | 109.73.10.69 |
| 22.istk.ru | 2025-06-28 | 37.140.192.32 |
| db.istk.ru | 2025-05-28 | 109.73.10.66 |
| mc.istk.ru | 2025-05-27 | 83.220.41.72 |
| portal-prod.istk.ru | 2025-05-12 | 89.20.40.131 |
| sd.istk.ru | 2025-06-18 | 83.220.41.73 |
| cloud.istk.ru | 2025-06-01 | 83.220.41.71 |
| sso.office.istk.ru | 2025-08-17 | 83.220.41.74 |
| confluence.istk.ru | 2026-01-11 | 83.220.41.73 |
| outlook.istk.ru | 2025-05-25 | 109.73.10.76 |
| terminal.istk.ru | 2025-05-26 | 109.73.10.71 |
| portal.istk.ru | 2024-12-27 | 89.20.40.131 |
| staff-admin.istk.ru | 2025-06-01 | 185.46.10.216 |
| sso.istk.ru | 2025-07-05 | 83.220.41.74 |
| certauth.sso.istk.ru | 2025-05-26 | 83.220.41.74 |
| portal-pp.istk.ru | 2024-12-27 | 89.20.40.130 |
| smtp.istk.ru | 2026-02-17 | 109.73.10.69 |
| rd1-r.istk.ru | 2025-05-24 | 109.73.10.68 |
| autodiscover.istk.ru | 2025-12-13 | 109.73.10.76 |
| vpns.istk.ru | 2025-01-28 | 109.73.10.66 |
| post.istk.ru | 2025-05-21 | 109.73.10.70 |
| www.istk.ru | 2025-06-17 | 37.140.192.32 |