Server Features » TLS Certificate » Valid
TLS certificate status: Valid
Percentage of SSL/TLS servers with certificate status Valid certificate. Showing percentages by IRC server software.About this test result: The certificate passed all tests, it has been issued by a trusted Certificate Authority, is not expired, hostname matched, etc.
Note on statistics:
- There is a difference in the gathering of TLS servers between 2017-2019 and 2020-onwards, see SSL/TLS statistics on the data page.
- For certificate validation errors, OpenSSL (s_client) returns a single error only, so only 1 of the errors is picked even though one server cert could have multiple errors.
- However, from 2023 onwards "Expired" is detected even when there are other errors (eg. Unknown CA).
Table
Percentage of SSL/TLS servers with certificate status Valid certificate. Showing percentages by IRC server software.| Software | Sep 2017 | Dec 2018 | Dec 2019 | Dec 2020 | Dec 2021 | Dec 2022 | Dec 2023 | Dec 2024 | Dec 2025 |
|---|---|---|---|---|---|---|---|---|---|
| bahamut | 14% | 33% | 38% | 89% | 42% | 44% | 64% | 58% | 65% |
| charybdis | 40% | 43% | 47% | 54% | 50% | 49% | 52% | 45% | 57% |
| Ergo | 0% | 45% | 25% | 0% | 58% | 65% | 49% | 54% | 58% |
| Hybrid | 19% | 24% | 26% | 40% | 38% | 34% | 36% | 39% | 40% |
| InspIRCd | 25% | 27% | 29% | 48% | 42% | 49% | 42% | 47% | 51% |
| IRCNet | 0% | 0% | 50% | 100% | 50% | 14% | 42% | 39% | 78% |
| Nefarious | 38% | 33% | 30% | 35% | 26% | 33% | 31% | 42% | 43% |
| ngircd | 27% | 34% | 37% | 44% | 47% | 55% | 57% | 55% | 52% |
| Ratbox | 4% | 6% | 6% | 23% | 11% | 14% | 22% | 14% | 21% |
| Solanum | 0% | 0% | 0% | 0% | 79% | 80% | 87% | 85% | 84% |
| SynchronetIRCd | 0% | 100% | 100% | 0% | 86% | 100% | 69% | 71% | 70% |
| UnrealIRCd | 11% | 16% | 18% | 27% | 28% | 35% | 35% | 37% | 42% |