OpenAPI Directory | Cenit Admin

Registered domains search checks the lists of registered domains for names containing particular words/phrases/numbers or symbols. Technically it's just a GUI interface for domains-index.com database containing more than 260M of registered domains and 1000+ TLDS including newGTLDs. It's free to use and could be helpful domains/marketing research tool. Search results are limited to 50 results. You can have up to 100 results via API (link in footer) and full list by

API documentation for redirection.io

Sheerseo API has 2 stages:
First stage - initiating the task: You fill in your task and receive in return the task id.
Second stage - collecting the results: send a request containing the task ids you got at the first stage and collecting the results.

Discover the hosting provider for any web site

5 api specs