Create a subdomain on web hosting

Create a subdomain on web hosting

One sub-domain (blog.votredomaine.fr, shop.votredomaine.fr) allows you to host a separate application on your web hosting Anthony IT Solutions without buying a new domain name.

This guide details the creation of the vhost, DNS recording and SSL certificate for a functional subdomain in minutes.

What you need

• Main active domain on web hosting
• Access panel and DNS area
• Content to host (site, app)
• DNS controlled

Select subdomain name

1. Convention

   Short prefix: blog, api, staging.

2. Avoid

   No special characters; max 63 characters per DNS label.

3. Wildcard

   *.domain.fr requires wildcard certificate, support contact.

4. Multisite

   WordPress network, multisite.

Configure DNS

1. Registration A

   Type A, host blog, value = IP hosting (same as the main domain).

2. Alternative CNAME

   CNAME blog → votredomaine.fr if dynamic IP.

3. Propagation

   15 minutes at 2 o'clock, test with dig blog.votredomaine.fr.

4. TTL

   300 s during tests, 3600 in production.

Create subdomain in panel

1. Panel

   My Services → Manage → Subdomains or Domains.

2. Add

   Enter blog.votredomaine.fr, root folder created automatically.

3. Root document

   Note the path (public_html/blog or dedicated).

4. SFTP

   Same SFTP access, SFTP, drop files in the right folder.

Deploy Site

1. Files

   Index to the root of the subdomain, not at the root of the main domain.

2. WordPress

   Install in the subdomain folder or configure URL, WordPress.

3. MySQL base

   Recommended dedicated base, MySQLbase.

4. HTTP test

   Visit http://blog.votredomaine.fr before SSL.

Enable HTTPS

• Respect supply quotas
• One SSL per subdomain or SAN
• E-mails: possible separate subdomain

1. SSL

   SSL subdomain Let's Encrypt.

2. Inclusion of certificate

   Check the subdomain when generating SSL.

3. Redirection

   Forcing HTTPS.

4. STS

   Advanced option after full validation.

Troubleshooting

• Subdomain does not resolve, DNS not propagated or bad IP.
• 404, Files in wrong root folder.
• SSL fails, DNS must point before generation.
• Main site fiche, uncreated Vhost or bad root document.

Frequently Asked Questions

How many subdomains?
According to web hosting formula, see panel Offer.

Subdomain and e-mail?
MX of the main domain; addresses @blog.domain possible.

staging.domain.fr ?
Ideal for pre-production testing.

Wildcard?
Not standard on mutualized; create each subdomain.

Related guides

• SSL subdomain
• Multiple Domains
• DNS
• WordPress

See also our web hosting offer and all the procedures on wiki web hosting.