> ## Documentation Index
> Fetch the complete documentation index at: https://kb.mochahost.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Let"s Encrypt Limits

The following limits apply to all Let's Encrypt SSL certificates, regardless of the actual hosting package. Please, note that these limits do NOT come from us as a web hosting provider.

You need to make sure that your domain name/sub-domain is pointing to your web hosting account/server hosted with us. You can not issue/validate certificates for domains that are not pointing to us!

The main issuing limit is **Certificates per Registered Domain, (20 per week).** A registered domain is, generally speaking, the part of the domain you purchased from your domain name registrar (us). For instance, in the name [www.example.com](http://www.example.com), the registered domain is example.com. In new\.blog.example.co.uk, the registered domain is example.co.uk. 

If you have a lot of sub-domains, 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 2,000 unique sub-domains per week!

Let’s encrypt, also have a **Duplicate Certificate limit of 5 certificates per week**. A certificate is considered a duplicate of an earlier certificate if they contain the exact same set of hostnames, ignoring capitalization and ordering of hostnames. For instance, if you requested a certificate for the names \[[www.example.com](http://www.example.com), example.com], you could request four more certificates for \[[www.example.com](http://www.example.com), example.com] during the week.

If you changed the set of names by adding \[blog.example.com], you would be able to request additional certificates.

There is a **Failed Validation limit of 5 failures per account, per hostname, per hour**. 

You can create a maximum of 10 Accounts per IP Address per 3 hours. You can create a maximum of 500 Accounts per IP Range within an IPv6 /48 per 3 hours. 

You can have a maximum of **300 Pending Authorizations** on your account. 

If you’ve hit a rate limit, we don’t have a way to temporarily reset it. You’ll need to wait until the rate limit expires after a week. We use a sliding window, so if you issued 10 certificates on Monday and 10 more certificates on Friday, you’ll be able to issue again starting Monday.

You can get a list of certificates issued for your registered domain by searching on\
, which uses the public Certificate Transparency logs.

For more information you can check the official documentation about this at: