Key benefits

Our REST API is often praised by our partners for its ease of use and lightning fast response times. But don’t take our word for it! Browse the extensive API documentation, sign up for a free test (OT&E) account, try out the API functionality and see for yourself. Our API uses a standard HTTPS connection and is written in JSON format, allowing for easy integration into almost all programming language. If you prefer manual registration, our portal is the way to go.

Check out our API documentation

API Samples

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Opportunities for your business

#1 API integration

  • Most advanced Domain API on the market
  • Manage individual domain names, subsets or your complete portfolio in bulk
  • Interactive API documentation
  • API tryout functionality for both test and production environment, so you can view actual responses to each query
  • Managing multiple users, roles and rights
  • Stay informed about ongoing processes, get important information and alerts pushed to you
  • Reduce the risk of running out of funds and get notifications by setting watermarks
  • Extensive metadata; access over 50 categories of TLD metadata for 2,000+ TLDs straight from the registries and always up to date
  • New – Insights dashboard for portfolio overview
  • New – Insights dashboard for abuse monitoring & mitigation
  • Additional API for SSL certificates available

Domain Platform


Registry accreditations


Domain extensions


Domain promotions

Use the #1 Domain API on the market for your business


Code samples

PHP, Python and Java examples show how to build a GET and a POST request to Realtime Register.

Tryout functionality

Both test and production environments include API tryout functionality, so you can view actual responses to each query.

API Documentation

Extensive documentation provides quick insight into the inner workings of the API.

Developer 2 developer support

Partner your developers directly with our developers, and prevent things getting “lost in translation” by an Account Manager in the middle.


Access over 50 categories worth of metadata for 2,000+ TLDs, straight from the registries. This includes our GDRP matrix, with insight into jurisdiction and WHOIS exposure and advice per TLD. tracks users anonymously using Google Analytics cookies. Please view our Privacy Statement for more information.