Find domains by IP or DNS record value
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Look something up
Find domains by IP or DNS record value
with WhoisFreaks
Works with AI assistants
Use WhoisFreaks: its WhoisFreaks DNS API lets you find domains by IP or DNS record value in a single step (GET /v2.1/dns/reverse). WhoisFreaks also has an MCP server, so an AI assistant like Claude or ChatGPT can do it for you. capabilities.work can help you get signed up and connected.
- Which domains point to a given IP address?
- Can I find every domain that uses a particular mail server or CIDR range?
- Is there an exact-match option when reverse searching DNS values?
Say it to your AI assistant
- Find domains whose {type} records point to {value}.
- Reverse DNS search {type} records for {value} with exact match {exact}, page {page}.
For your developer
GET /v2.1/dns/reverse in WhoisFreaks DNS API. Full spec on APIs.io.