Updated March 2026
Yes. Each subdomain of your custom domain (docs.mysite.com, blog.mysite.com) is added as a separate custom domain, each linked to a different Sutrena subdomain. This is the industry-standard approach used by Vercel, Netlify, Cloudflare Pages, and every major hosting platform.
How it works: create a separate Sutrena subdomain for each section of your site, deploy pages to each one, then add each custom subdomain as its own domain. Each gets its own CNAME record pointing to cname.sutrena.com, and each gets independent SSL provisioning.
Example setup for mysite.com with docs and blog:
1. Create three Sutrena subdomains: mysite (main site), mysite-docs (documentation), mysite-blog (blog) 2. Deploy pages to each subdomain 3. Add three custom domains: mysite.com → linked to mysite, docs.mysite.com → linked to mysite-docs, blog.mysite.com → linked to mysite-blog 4. Add three CNAME records in your DNS provider, all pointing to cname.sutrena.com
Each domain counts toward your plan's custom domain limit. Pro plan (5 domains) covers most multi-subdomain setups. Scale plan has unlimited domains.
Why not wildcard? Wildcard custom domains (*.mysite.com) require delegating DNS control and wildcard SSL certificates. Every major hosting platform — Vercel, Netlify, Render, Fly.io — uses per-hostname setup instead. It is simpler, more secure, and gives you explicit control over which subdomains are active.
# 1. Create subdomains for each section
curl -X POST https://sutrena.com/api/account/subdomains \
-H "Authorization: Bearer st_live_your_key" \
-H "Content-Type: application/json" \
-d '{ "name": "mysite-docs" }'
# 2. Deploy pages to the docs subdomain
curl -X POST https://sutrena.com/api/pages \
-H "Authorization: Bearer st_live_your_key" \
-H "Content-Type: application/json" \
-d '{
"subdomainId": "DOCS_SUBDOMAIN_ID",
"slug": "index",
"title": "Documentation",
"html": "<h1>Docs</h1>"
}'
# 3. Register docs.mysite.com linked to the docs subdomain
curl -X POST https://sutrena.com/api/account/domains \
-H "Authorization: Bearer st_live_your_key" \
-H "Content-Type: application/json" \
-d '{
"domain": "docs.mysite.com",
"subdomainId": "DOCS_SUBDOMAIN_ID"
}'
# 4. Add CNAME in DNS:
# docs.mysite.com CNAME cname.sutrena.com