| Date | IP Address |
| 2020-12-15 | 38.113.20.15 (ClassC) |
| 2026-01-26 | 38.113.20.72 (ClassC) |
| Date | Domain | IP |
| smtp01.pagerize.com | 2025-12-28 | 38.113.20.72 |
| mx1.pagerize.com | 2026-01-02 | 38.113.20.72 |
| mail2.pagerize.com | 2025-12-29 | 38.113.20.72 |
| imap2.pagerize.com | 2026-01-20 | 38.113.20.72 |
| smtp2.pagerize.com | 2026-01-03 | 38.113.20.72 |
| poczta.pagerize.com | 2026-01-26 | 38.113.20.72 |
| exchange.pagerize.com | 2026-01-26 | 38.113.20.72 |
| mailgate.pagerize.com | 2026-01-08 | 38.113.20.72 |
| auth.pagerize.com | 2026-01-26 | 38.113.20.72 |
| smtpauth.pagerize.com | 2025-12-28 | 38.113.20.72 |
| authsmtp.pagerize.com | 2026-01-26 | 38.113.20.72 |
| mailer.pagerize.com | 2025-12-27 | 38.113.20.72 |
| mailhost.pagerize.com | 2025-12-28 | 38.113.20.72 |
| mailgw.pagerize.com | 2026-01-03 | 38.113.20.72 |
| relay.pagerize.com | 2025-12-27 | 38.113.20.72 |