Worked on the is-a-dev/register repository to deliver domain configuration and DNS setup for ignaciobiran.is-a.dev, enabling branded development domain usage and verified hosting readiness. The approach involved creating a JSON-based domain configuration with owner details, establishing CNAME records, and updating DNS to support both A records and VerceI domain verification via TXT records. Focused on DNS management, domain verification, and configuration management, the work improved deployment reliability and streamlined onboarding for domain-based previews. All changes were traceable through specific commits, and DNS hygiene was enhanced to reduce deployment risks, ensuring the repository was prepared for reliable preview deployments and access control.