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by aeorgnoieang 2627 days ago
From [Rate Limits - Let's Encrypt - Free SSL/TLS Certificates](https://letsencrypt.org/docs/rate-limits/):

> If you have a lot of subdomains, you may want to combine them into a single certificate, up to a limit of 100 Names per Certificate. Combined with the above limit, that means you can issue certificates containing up to 5,000 unique subdomains per week.