I have a Cloudflare DNS service question.

[magicsplit.yes]

I have a Cloudflare DNS service question.

1. We have 500 customers.

2. I want to create 500 subdomains.

ex) user001.mydomain.com
user002.mydomain.com
user003.mydomain.com
…
user500.mydomain.com

3. Each customer’s PC tries to update the customer’s PC IP to Cloudflare DNS using [Cloudflare DNS API] every morning.

Is the above situation possible?

• What is the maximum number of subdomain records?
• Are there limits on API calls?

[cscharff]

@magicsplit.yes

Each customer’s PC tries to update the customer’s PC IP to Cloudflare DNS using [Cloudflare DNS API] every morning.

There’s no individual record level permissions on Cloudflare. You would need to implement your own API to accept change requests and then using the valid request data from a customer call update the record using your Cloudflare API credentials.

@magicsplit.yes

What is the maximum number of subdomain records?

Limit on DNS records per domain

Well, I found it on the Spanish documentation, which btw isn’t very updated. The limits may have changed recently, but those are the latest official ones that I could find. The link to the support article (in Spanish) is: https://support.cloudflare.com/hc/es-es/articles/360017421192-Preguntas-frecuentes-sobre-DNS-de-Cloudflare Maybe @fritex can confirm those limits…

@magicsplit.yes

Are there limits on API calls?

Limits · Cloudflare Fundamentals docs