# Discovery

Search Deepinfo's internet-wide domain dataset: find subdomains, associated domains, domains registered at the same time, and domains that share a WHOIS…

Source: https://docs.deepinfo.com/reference/discovery/

Last updated: 2026-09-27

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Search Deepinfo's internet-wide domain dataset: find subdomains, associated domains, domains registered at the same time, and domains that share a WHOIS email, name server, IP or mail server.

Finder endpoints support `export=true` to get a **download link** for the full result instead of a page (`export_format`: `json` or `csv`; `export_scope`: `basic`, `default` or `extended`).

Pagination: `page` ≤ 400, `page_size` 25–100. At most **10,000** results per query.

| Method | Endpoint | Path |
|---|---|---|
| POST | [Domain Search](/reference/discovery/domain-search/) | `/discovery/domain-search` |
| GET | [Domain Detail](/reference/discovery/domain-detail/) | `/discovery/domain-detail` |
| GET | [All TLDs](/reference/discovery/all-tlds/) | `/discovery/all-tlds` |
| GET | [Associated Domain Finder](/reference/discovery/associated-domain-finder/) | `/discovery/associated-domain-finder` |
| GET | [Reverse IP](/reference/discovery/reverse-ip/) | `/discovery/reverse-ip` |
| GET | [Reverse MX](/reference/discovery/reverse-mx/) | `/discovery/reverse-mx` |
| GET | [Reverse NS](/reference/discovery/reverse-ns/) | `/discovery/reverse-ns` |
| GET | [Reverse WHOIS Email](/reference/discovery/reverse-whois-email/) | `/discovery/reverse-email` |
| GET | [Same-Time Registered Domain Finder](/reference/discovery/same-time-registered-domain-finder/) | `/discovery/sametime-domain-finder` |
| GET | [Subdomain Finder](/reference/discovery/subdomain-finder/) | `/discovery/subdomain-finder` |