Heroku DNS

herokudns.com is a domain operated by Heroku, a subsidiary of Salesforce, that functions as core infrastructure for the Heroku cloud platform, providing managed Domain Name System (DNS) services for customer applications. Registered in March 2016, the domain has been in active legitimate operation for more than 10 years, serving as the authoritative root for nameservers that resolve traffic to millions of applications hosted on Heroku’s Platform as a Service (PaaS) offering. Unlike public-facing end-user websites, herokudns.com is an infrastructure-only domain, not intended for direct public access, supporting core connectivity for Heroku customers that use custom domain names for their deployed applications. Heroku is one of the earliest and most widely used developer-focused PaaS platforms, enabling teams to build, deploy, and scale web applications without managing the underlying server or network infrastructure. The herokudns.com domain is a critical component of this service, allowing customers to map their own branded custom domains to Heroku-hosted apps, rather than relying on the default herokuapp.com subdomain. With a confirmed global traffic rank of 783, placing herokudns.com in the top 1000 most active domains globally, it handles billions of DNS queries annually from end users accessing Heroku-hosted applications across the world. The domain is registered through MarkMonitor Inc., a leading enterprise-grade domain registrar trusted by major global brands, and is set to expire in 2027, confirming long-term active ownership and management by Salesforce. Its nameserver infrastructure combines Heroku-owned resources and NSone-managed services, designed for high availability and low-latency resolution across all global geographic regions.