Bulk Domain RDAP Checker — Check Domain Age, Registrar & Expiry for Any List of Domains

The problem:WHOIS lookups are manually one-at-a-time, blocked by privacy redaction, or require paid API access. If you need registration data for a list of domains — for SEO research, domain investing, or competitor analysis — there's been no easy free option.What this does:✅ Checks any domain (or a list of hundreds) for: registrar, registration date, expiry date, last updated, status, and nameservers✅ Uses RDAP — the modern public replacement for WHOIS, standardized by ICANN — completely free, no auth required✅ Accepts a .txt or .csv file with one domain per line, exports everything to CSV✅ Handles errors gracefully — unregistered domains, unsupported TLDs, and rate limits are all logged with clear error messages✅ Zero external dependencies — just Python's built-in librariesWho it's for:- SEO professionals evaluating domain age and authority before buying or recommending a domain- Domain investors checking registration history and expiry dates on expired/expiring domains- Entrepreneurs researching competitors' domain ages as part of due diligence- Developers bulk-checking a client's domain portfolio- Marketers building lists and needing to verify domain healthWhat you get:- Python script (main.py) — runs on Windows, Mac, Linux- No external dependencies — uses Python's built-in libraries only- Step-by-step README.md — no coding experience neededRequirements:- Python 3.8+ installed (free at python.org)- Nothing elseSetup takes 2 minutes:1. Install Python (if you haven't — it's free)2. Create a domains.txt file with one domain per line3. Run: python main.py --input domains.txt --output results.csv4. Open the CSV in Excel or Google Sheets30-day refund policy. If it doesn't work on your machine, email me and I'll fix it or refund you.

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