How do I set up a DNS record to connect my website to Fasterize?

Introduction

To integrate Fasterize into your website, an essential step is to update your DNS settings.

👉 The goal: to redirect your subdomain (usually www) to the Fasterize infrastructure in order to enable optimizations.

Good news: this process is quick and requires editing just one record.

Which DNS record needs to be changed?

To connect your site to Fasterize, you need to edit (or create) a record of type CNAME on the subdomain www.

Here is the expected configuration:

• Subdomain: www
• Type: CNAME
• Value: www.example.com.fasterized.com
• TTL: 3600 (approximate value)

💡 A CNAME record allows you to point one domain to another, in this case to the Fasterize infrastructure.

How do I set up a CNAME record step by step?

1. Access your DNS manager

Log in to your DNS provider's control panel (OVH, Cloudflare, Gandi, etc.).

2. Find (or create) the entry www

• If the entry already exists → edit it
• Otherwise → create a new DNS record

3. Set up recording

Please fill in the following fields:

• Type: CNAME
• Name / Subdomain : www
• Target value : www.example.com.fasterized.com
• TTL : default value or 3600

💡 Example: for mysite.com, you need to configure www.monsite.com to Fasterize.

Important points to note

The period (.)

The CNAME value ends with a period (.) :

• It is required by the DNS standard
• Some providers add it automatically

💡 You can enter the value with or without a period, depending on your interface.

TTL (Time To Live)

The TTL corresponds to the cache duration of your DNS record.

• 3600 (1 hour) is a common value
• You can use a different value without any major impact

Common mistakes to avoid

⚠️

• Use an A record instead of a CNAME record
• Edit a subdomain other than www
• Enter an incorrect value
• Delete an existing record without verification

How long does it take to work?

After making changes, the DNS update requires some time to propagate.

👉 This may take up to 24 hours (often much less).

How can I verify that the configuration is correct?

You can check the propagation of your record using the tool:

• www.whatsmydns.net

Steps:

• Enter your domain (e.g., www.monsite.com)
• Select the CNAME type
• Check that the returned value is indeed:www.example.com.fasterized.com

💡 This tool lets you view DNS propagation from different regions around the world.

Conclusion

To connect your site to Fasterize:

• Set up a CNAME to www
• Point to the Fasterize infrastructure
• Wait for the DNS to propagate
• Check the configuration using a dedicated tool

👉 Once this step is complete, your site is ready to benefit from Fasterize's optimizations.

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