| Property | Value |
| Name | Khoi Nguyen Nguyen |
| Organization | Proton Technologies AG |
| Address | rue de Lausanne 25 |
| City | CH-1201 Genève |
| Country | Switzerland |
| NameServer | ns2.protonmail.ch |
| Date | IP Address |
| 2025-01-30 | 185.70.42.21 (ClassC) |
| Date | Domain | IP |
| ns1.protonmail.ch | 2024-12-06 | 185.70.42.150 |
| ns2.protonmail.ch | 2024-09-12 | 176.119.200.150 |
| ns3.protonmail.ch | 2024-11-23 | 205.132.47.1 |
| api.protonmail.ch | 2024-10-25 | 185.70.42.25 |
| app.protonmail.ch | 2025-01-30 | 185.70.42.26 |
| www.protonmail.ch | 2025-01-30 | 185.70.42.31 |