| Date | IP Address |
| 2021-03-28 | 77.68.73.125 (ClassC) |
| 2025-09-14 | 172.67.170.157 (ClassC) |
| 2025-11-02 | 104.21.55.68 (ClassC) |
| Date | Domain | IP |
| mx20.cbfsim.co.uk | 2025-06-28 | 172.67.170.157 |
| smtp01.cbfsim.co.uk | 2025-07-02 | 104.21.55.68 |
| za141.cbfsim.co.uk | 2025-09-23 | 77.68.73.125 |
| smtp1.cbfsim.co.uk | 2025-07-23 | 172.67.170.157 |
| relay1.cbfsim.co.uk | 2025-07-29 | 104.21.55.68 |
| mail02.cbfsim.co.uk | 2025-06-27 | 104.21.55.68 |
| mx02.cbfsim.co.uk | 2025-05-24 | 172.67.170.157 |
| server2.cbfsim.co.uk | 2025-09-24 | 104.21.55.68 |
| mail3.cbfsim.co.uk | 2025-07-19 | 104.21.55.68 |
| smtp3.cbfsim.co.uk | 2025-07-03 | 172.67.170.157 |
| mx3.cbfsim.co.uk | 2025-05-23 | 172.67.170.157 |
| mx4.cbfsim.co.uk | 2025-08-19 | 104.21.55.68 |
| mail5.cbfsim.co.uk | 2025-08-25 | 172.67.170.157 |
| mx5.cbfsim.co.uk | 2025-08-22 | 104.21.55.68 |
| mail7.cbfsim.co.uk | 2025-02-14 | 104.21.55.68 |
| xr219.cbfsim.co.uk | 2025-01-16 | 172.67.170.157 |
| mail9.cbfsim.co.uk | 2025-08-01 | 172.67.170.157 |
| zimbra.cbfsim.co.uk | 2025-07-23 | 104.21.55.68 |
| posta.cbfsim.co.uk | 2025-05-24 | 172.67.170.157 |
| pbrand.cbfsim.co.uk | 2025-06-14 | 172.67.170.157 |
| comune.cbfsim.co.uk | 2025-06-30 | 172.67.170.157 |
| mail.comune.cbfsim.co.uk | 2025-09-12 | 172.67.170.157 |
| ipe.cbfsim.co.uk | 2025-06-25 | 172.67.170.157 |
| mailgate.cbfsim.co.uk | 2025-07-17 | 104.21.55.68 |
| smtpauth.cbfsim.co.uk | 2025-04-10 | 104.21.55.68 |
| mail.cbfsim.co.uk | 2025-05-23 | 172.67.170.157 |
| webmail.cbfsim.co.uk | 2025-06-15 | 104.21.55.68 |
| outmail.cbfsim.co.uk | 2025-09-11 | 104.21.55.68 |
| eml.cbfsim.co.uk | 2025-07-31 | 172.67.170.157 |
| m.cbfsim.co.uk | 2025-06-23 | 172.67.170.157 |
| spam.cbfsim.co.uk | 2025-06-28 | 172.67.170.157 |
| pop.cbfsim.co.uk | 2025-10-02 | 172.67.170.157 |
| mailapp.cbfsim.co.uk | 2025-09-14 | 172.67.170.157 |
| authsmtp.cbfsim.co.uk | 2025-07-28 | 172.67.170.157 |
| hostmaster.cbfsim.co.uk | 2025-09-19 | 104.21.55.68 |
| mailserver.cbfsim.co.uk | 2025-07-01 | 172.67.170.157 |
| cs.cbfsim.co.uk | 2025-06-16 | 104.21.55.68 |
| hermes.cbfsim.co.uk | 2025-09-19 | 172.67.170.157 |
| mails.cbfsim.co.uk | 2025-08-14 | 172.67.170.157 |
| dns.cbfsim.co.uk | 2025-08-23 | 172.67.170.157 |
| bad.dns.cbfsim.co.uk | 2025-09-14 | 172.67.170.157 |
| test.bad.dns.cbfsim.co.uk | 2025-09-17 | 104.21.55.68 |
| smtps.cbfsim.co.uk | 2025-07-08 | 104.21.55.68 |
| srv.cbfsim.co.uk | 2025-07-20 | 172.67.170.157 |
| gw.cbfsim.co.uk | 2025-03-30 | 172.67.170.157 |
| www.cbfsim.co.uk | 2025-05-26 | 104.21.55.68 |
| mbox.cbfsim.co.uk | 2025-07-29 | 172.67.170.157 |
| gateway.cbfsim.co.uk | 2025-01-16 | 104.21.55.68 |