From b16628ca043f5e4febb65725e6ffc8c3f319b145 Mon Sep 17 00:00:00 2001 From: Andrew Ayer Date: Tue, 6 Jan 2026 16:56:34 -0500 Subject: [PATCH] Document test certificate domains in README Closes: #97 --- README.md | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/README.md b/README.md index 4a71ace..0ee1f26 100644 --- a/README.md +++ b/README.md @@ -100,6 +100,23 @@ checks that the log is obeying its append-only property. A future release of Cert Spotter will support gossiping with other log monitors to ensure the log is presenting a single view. +## Testing + +Every day at around 12:05 UTC, a certificate is issued and logged to CT +for the DNS name `DAY-OF-WEEK.test.certspotter.org`. You can add one +or more of these DNS names (or `.test.certspotter.org`) to your watch +list to get confirmation that your certspotter instance is working. + +| DNS Name | Issuer | Key Type | +| -------------------------------- | ------------- | -------- | +| `monday.test.certspotter.org` | Sectigo | RSA | +| `tuesday.test.certspotter.org` | Let's Encrypt | ECDSA | +| `wednesday.test.certspotter.org` | Google | RSA | +| `thursday.test.certspotter.org` | Sectigo | ECDSA | +| `friday.test.certspotter.org` | Let's Encrypt | RSA | +| `saturday.test.certspotter.org` | Google | ECDSA | +| `sunday.test.certspotter.org` | Let's Encrypt | ECDSA | + ## Copyright Copyright © 2016-2025 Opsmate, Inc.