domain-research

You can check domain availability and retrieve WHOIS data using free, zero-credential RDAP lookups and a whois CLI fallback. This approach queries registry servers directly via an IANA bootstrap to output registrar, dates, status, and nameservers without paid APIs.

The best way to perform bulk domain availability checks is using parallelized queries with rate-aware batching. This method applies keyword searches across common and custom TLDs, returning clear AVAILABLE, TAKEN, or UNKNOWN reporting for single or bulk domain lookups.

RDAP lookup works by querying registry-accurate JSON results across 1195+ gTLDs using an IANA bootstrap. It directs queries to the correct registry servers to retrieve structured registration details including registrar, expiry dates, status, and nameservers.

Yes, you can retrieve WHOIS data for ccTLDs without RDAP support using a whois CLI fallback. This mechanism uses pattern parsing to detect domain availability, registrar information, expiry dates, and nameservers when registries lack RDAP endpoints.

No, this domain research approach requires zero credentials or API keys to check expiry dates. It applies free registry RDAP servers and a whois CLI fallback to extract expiry dates and nameserver information without signing up for paid services.

Limitations during nameserver discovery include UNKNOWN reporting when RDAP servers are unavailable and whois CLI pattern parsing fails. Accuracy depends on registry support for RDAP or consistent CLI output formatting for ccTLDs.