Multi-tenant Limits

This page provides an overview of the limits and feature availability for Vercel for Platforms across different plan types.

• To prevent abuse, Vercel implements soft limits of 100,000 domains per project for the Pro plan and 1,000,000 domains for the Enterprise plan. These limits are flexible and can be increased upon request. If you need more domains, please contact our support team for assistance.

• All plans: Support for wildcard domains (e.g., *.acme.com)
• Requirement: Must use Vercel's nameservers for wildcard SSL certificate generation

• All plans: Unlimited custom domains per project
• SSL certificates: Automatically issued for all verified domains
• Verification: Required for domains already in use on Vercel

Multi-tenant preview URLs are available exclusively for Enterprise customers. This feature allows you to:

• Generate unique preview URLs for each tenant during development
• Test changes for specific tenants before deploying to production
• Use dynamic subdomains like tenant1---project-name-git-branch.yourdomain.dev

To enable this feature, Enterprise customers should contact their Customer Success Manager.

Custom SSL certificates are available exclusively for Enterprise customers. This feature allows you to:

• Upload your own SSL certificates for tenant domains
• Maintain complete control over certificate management
• Meet specific compliance or security requirements

Learn more about custom SSL certificates.

Domain management operations through the Vercel API are subject to standard API rate limits:

• Domain addition: 100 requests per hour per team
• Domain verification: 50 requests per hour per team
• Domain removal: 100 requests per hour per team

After configuring domains or nameservers, DNS typically takes 24-48 hours to propagate globally. Use tools like WhatsMyDNS to check propagation status.

Each DNS label has a 63-character limit. For preview URLs with long branch names and tenant subdomains, keep branch names concise to avoid resolution issues.