Let's Encrypt Blog company blog
DNS-Persist-01: A New Model for DNS-Based Challenge Validation
When you request a certificate from Let’s Encrypt, our servers validate that you control the hostnames in that certificate using ACME challenges. For subscribers who need wildcard certificates or who prefer not to expose infrastructure to the public Internet, the DNS-01 challenge type has long been the only choice…
- Points
- 321
- HN comments
- 162
- Submissions
- 1
- Cited by
- 0 commenters
Security & PrivacyInfrastructure & DevOps2026
On Hacker News
| Submitted | Title on HN | Points | Comments |
|---|---|---|---|
| Feb 18, 2026 | DNS-Persist-01: A New Model for DNS-Based Challenge Validation by todsacerdoti | 321 | 162 |
