Rate Limits for Let's Encrypt


This page has moved (as of July 2016) to https://letsencrypt.org/docs/rate-limits/.

Subdomains and certs again)
Rate limit or certificate limit?
Maximum number of sites on one certificate
Limit on number of domain in SAN
Revoke all Certificates?
How can i completely reinstall lets encrypt, delete all old certificates, and start fresh?
7 registrations per week-limitation
Can't renew certificates
Can't renew due to limit on domain
Too many certificates already issued for: azure.com
Rate limited domain
Where is the rate limit exemption request form?
Can I use letsencrypt in more than one subdomain?
Is this possible?
SAN Certs and Ratelimiting
Could the Rate Limits post be licensed under a CC/Attribution variant?
Need Clarity on Rate Limit
Can't obtain certificats with *ovh.net
Re-install certificates after server crash
How many subdomains are allowed under one certificate?
Let's make Let's Encrypt easy and simple
Keys for one domain with more than one server?
Unexpected error 429
[SOLVED] How often to renew?
Certificates for many user-controlled subdomains
Use Arch Linux to generate private key, cert, CSR, CA for hosting service
Heroku and providing SSL coverage across multiple Custom Domains

We’ve updated our rate limits. The updated limits are reflected at https://letsencrypt.org/docs/rate-limits/.

The changes were:

  • 20 certificates per registered domain per week (up from 5).
  • Added an exception to this limit for renewing certificates (issuing a new certificate with same names as a previous one).
  • Added a new limit on issuing certificates with the exact same set of names: 5 certificates per FQDN set per week.

As always, we’ll be evaluating these on an ongoing basis and will tweak them as needed. Note that if you have a domain with more than 20 subdomains, the exception we added for renewing certificates allows you to gradually increase the number of certificates you can issue over the course of multiple weeks.

New rate limit question
Rate limiting with --renew option
Let's Encrypt Renewing cert is same as Issuing cert?
New rate limit question
Certificates for many user-controlled subdomains