| Subdomain | First seen | Last seen | DNS | Certificate issuer | Report |
|---|
| itil.npc.dev | May 2024 | Nov 2024 | No DNS | Let's Encrypt | Report → |
| www.npc.dev | Mar 2019 | Dec 2023 | Resolves | Let's Encrypt | Report → |
| pve.npc.dev | Sept 2023 | Nov 2023 | No DNS | Let's Encrypt | Report → |
Found in public certificate transparency logs, which record every publicly trusted certificate. Some subdomains may no longer exist.