Domain Name Checker APIs can be used to research website domain names and their availability. Some Domain APIs also provide other information, like domain reputation.
Pricing varies depending on the API. For example, Domain Availability Checker is only $1 per month for unlimited calls. Domainr is free up to 10000 calls per month. Domain tools API has a tiered pricing plan, so you can choose which subscription level is best for you.
Be sure to browse the APIs in this collection to find the best Domain Checker API for your application or website.
All of these APIs are available in multiple popular SDKs including:
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