How to connect an IONOS (1&1) domain

Recommended: One-click connection with Entri

RebelSites uses Entri to auto-configure your DNS — no manual record editing needed. When you click "Connect Domain" in the app, an Entri modal opens and handles everything automatically for IONOS (1&1) and most other registrars.

1. In RebelSites, go to your site settings and click "Connect a custom domain."

2. Enter your domain name.

3. Click "Connect" — the Entri modal will open.

4. Sign into your registrar when prompted.

5. Entri configures the DNS records automatically. Done.

The whole process takes about 30 seconds. If Entri can't connect to your registrar automatically, it will show you manual instructions instead.

Manual setup (if Entri didn't work)

If the automatic connection didn't work, follow these manual steps.

Step 1: Access IONOS DNS

1. Go to ionos.com → "Domains & SSL" → click domain → "DNS" or "Edit DNS Settings."

Step 2: Add the CNAME

1. Add Record → CNAME | Host: www | Points to: paste CNAME target | TTL: 3600 → Save.

Step 3: Root domain redirect

Go to domain overview → Forwarding → redirect yourdomain.com to www.yourdomain.com (301 permanent).

Propagation: 15–60 minutes. Still stuck? Hit the chat icon.