How can I redirect from a main domain to a subdomain?

S

SuperHelpflare•12/21/25, 8:04 PM

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- ℝ𝕠𝕟𝕘𝕚𝕧𝕚𝕝𝕖 -OP•12/21/25, 8:40 PM

I didn't understand, can you explain?

S

SuperHelpflare•12/21/25, 8:40 PM

Support AI

To redirect from a main domain to a subdomain, you need to follow these steps:

Create a DNS record: Go to the Cloudflare DNS settings and create a new A record for your main domain (e.g.,
```
example.com
```
example.com
```
example.com
```
example.com
). Set the record to be proxied, which means Cloudflare will handle the traffic. The IP address you enter doesn't matter, as the traffic will be redirected.
Create a Single Redirect: In the Cloudflare dashboard, go to the "Rules" section and create a new Single Redirect. This will define the redirect rule.
Set the redirect condition: In the "When incoming requests match" section, use the Expression Editor to set the condition for the redirect. For example, you can use
```
(lower(http.host) eq "example.com")
```
(lower(http.host) eq "example.com")
```
(lower(http.host) eq "example.com")
```
(lower(http.host) eq "example.com")
to match requests to your main domain.
Set the redirect target: In the "Then" section, set the target URL for the redirect. Use the
```
concat
```
concat
```
concat
```
concat
function to construct the URL, like this:
```
concat("https://","subdomain.example.com",http.request.uri.path)
```
concat("https://","subdomain.example.com",http.request.uri.path)
```
concat("https://","subdomain.example.com",http.request.uri.path)
```
concat("https://","subdomain.example.com",http.request.uri.path)
. This will redirect requests to your main domain to your subdomain.
Set the status code: Set the status code for the redirect to
```
301
```
301
```
301
```
301
, which is a permanent redirect.

Here's an example of what the redirect rule might look like:

When incoming requests match

(lower(http.host) eq "example.com")

(lower(http.host) eq "example.com")

(lower(http.host) eq "example.com")

(lower(http.host) eq "example.com")

Then

Expression:
```
concat("https://","subdomain.example.com",http.request.uri.path)
```
concat("https://","subdomain.example.com",http.request.uri.path)
```
concat("https://","subdomain.example.com",http.request.uri.path)
```
concat("https://","subdomain.example.com",http.request.uri.path)
Status code:
```
301
```
301
```
301
```
301

You can find more information on setting up redirects in the Cloudflare documentation: https://developers.cloudflare.com/fundamentals/manage-domains/manage-subdomains/#redirect-the-apex-domain-to-a-subdomain

Sources

This is an AI generated response, it may not be 100% accurate. Please validate the output. You can ask followups by replying to this message or mentioning me.

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- ℝ𝕠𝕟𝕘𝕚𝕧𝕚𝕝𝕖 -OP•12/21/25, 8:45 PM

Could someone explain it better to me because I don't understand anything?

-- ℝ𝕠𝕟𝕘𝕚𝕧𝕚𝕝𝕖 -Could someone explain it better to me because I don't understand anything?

L

Laudian•12/21/25, 9:01 PM

Hi, still here?

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- ℝ𝕠𝕟𝕘𝕚𝕧𝕚𝕝𝕖 -OP•12/22/25, 8:41 AM

Hi

-

- ℝ𝕠𝕟𝕘𝕚𝕧𝕚𝕝𝕖 -OP•12/22/25, 8:42 AM

I apologize in advance that my English is very poor, but the kind of text that this robot gives is very difficult to translate with a translation program.

LLaudian Hi, still here?

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- ℝ𝕠𝕟𝕘𝕚𝕧𝕚𝕝𝕖 -OP•12/23/25, 8:22 AM

Hello?

-

- ℝ𝕠𝕟𝕘𝕚𝕧𝕚𝕝𝕖 -OP•12/23/25, 8:22 AM

I need help

-- ℝ𝕠𝕟𝕘𝕚𝕧𝕚𝕝𝕖 -I need help

L

Laudian•12/23/25, 12:44 PM

Hi, sorry for the late response. Is your domain already using Cloudflare?

L