Bulk Domain Availability & WHOIS Checker (RDAP)

Check thousands of domains at once: available or registered, plus registrar, creation and expiry dates, days until expiry, and nameservers. Check a name across many TLDs, or find domains expiring soon. Uses official RDAP, the modern WHOIS. Free.

Domain Availability Checker — Bulk DNS & WHOIS Lookup

automation-lab/domain-availability-checker

Check exact domain names in bulk and return available/registered verdicts with DNS/WHOIS method, registrar, creation/expiry dates, name servers, timing, and errors in structured JSON.

Domain Registration Lookup Scraper

automation-lab/domain-rdap-lookup

Look up domain registration, registrar, status, nameserver, and expiry data through authoritative public RDAP services.

Domain Age Checker — Bulk RDAP + WHOIS Lookup

prodiger/domain-age-checker

Bulk-check domain age, registration date, expiry, registrar, nameservers, DNSSEC, and EPP status codes via IANA-bootstrapped RDAP with port-43 WHOIS fallback for ccTLDs (.de, .ru, .jp, .kr, .cn, .it, .br, .es, .pl, .nl).

Domain Availability Checker (bulk)

bgfc97/domain-availability-checker

Check in bulk whether domains are available or already registered, via official RDAP. Expand a name across many TLDs, or pass a domain list. Shows expiry and registrar for taken ones. For domainers and brand protection. No key, no proxy.

Check domain availability and fetch WHOIS records, DNS records, and SSL certificate details in one call. Supports bulk domain lists — useful for domain research, brand monitoring, and infrastructure audits.

Domain Availability Checker

ozito/domain-availability-checker

Fast, reliable domain availability checker using RDAP with automatic WHOIS fallback. Check one domain across up to 10 TLDs in a single request. Supports .com, .net, .org, .io, .ai, .dev, .app + custom RDAP endpoints. Structured JSON output with status, source & response time.

Look up domain registration data via modern RDAP (JSON WHOIS). Get registrar, creation/expiry/updated dates, status, nameservers & DNSSEC. Bulk, no API key.

🌐 Domain Intelligence Scraper - WHOIS & Domain Age

benthepythondev/domain-intelligence-scraper

Extract domain registration data including age, expiry dates, registrar, nameservers, and DNSSEC status using free RDAP/WHOIS APIs. Perfect for SEO, lead generation, and security research

Whois RDAP Lookup & Domain Ownership Checker API

dev00/whois-rdap-lookup-domain-ownership-checker-api

Query domain registration details (WHOIS) via standard RDAP with automatic fallback and clean JSON responses.