Some users may want to configure their custom domain using an A record instead of a CNAME record. However, Arcadier does not support A record redirection. This article explains why, and what type of DNS setup Arcadier requires.
Why A Record Redirection Is Not Supported
Arcadier’s infrastructure uses a dynamic IP addressing system. This means the platform’s IP address changes periodically, especially during system updates or server maintenance.
Because of this:
- An A record is not suitable—it maps a domain directly to a fixed IP address.
- If Arcadier’s IP changes, your A record becomes outdated and your site will break until you manually update the DNS.
How CNAME Redirection Works (and Why Arcadier Uses It)
Arcadier instead uses CNAME redirection for all custom domains.
A CNAME record points a domain to another domain name, not to an IP address.
This is ideal for Arcadier because:
- The CNAME can point to Arcadier’s stable DNS target.
- Even if Arcadier’s underlying IP changes, your domain remains correctly routed.
- No manual DNS updates are required after Arcadier system updates.
In short:
| DNS Record Type | Points To | Suitable for Arcadier? | Why |
|---|---|---|---|
| A Record | IP address | No | Arcadier’s IP changes frequently. |
| CNAME Record | Domain name | Yes | Automatically adapts to infrastructure updates. |
What You Should Do
When setting up your custom domain for Arcadier:
- Always create a CNAME record.
- Point it to the Arcadier-provided DNS target (e.g.,
marketplace.arcadier.io).
This ensures stability, compatibility, and zero downtime during system updates.