isthiswebsiteavailable.com
Free domain availability checker
isthiswebsiteavailable.com lets you check whether a domain name is registered and compare what it would cost to register it across the major registrars — all in one place, instantly.
Availability is checked using RDAP (Registration Data Access Protocol), the modern standard that replaced WHOIS. Rather than scraping registrar websites, the tool queries the authoritative registry for each TLD directly, giving accurate results for any domain extension with RDAP coverage.
Prices are fetched live where APIs are available. Cloudflare, Dynadot, NameSilo, and Name.com prices are pulled in real time on every search. For registrars without accessible APIs — Porkbun, Namecheap, and others — the tool shows clearly labeled estimates based on current published pricing.
The site runs on Cloudflare Workers, meaning searches are handled at the edge closest to you rather than a single origin server. No account required, no search history stored on our servers. Recent searches are saved locally in your browser only.
What it does
Domain availability
Via live RDAP — any TLD with registry coverage
Registrar prices
Live or estimated, sorted cheapest first with renewal costs
TLD alternatives
Checks .com, .io, .dev, .ai, .co and more in parallel
Social handle check
Instagram, X, TikTok, YouTube, and GitHub in one go
Name Idea Generator
Enter keywords, get available domain combinations instantly
Bulk domain check
Check up to 20 domains at once
Built by
Rishav Mukherjee
Software Engineer · Bay Area, California
I am a software engineer based in the Bay Area, California, with a focus on AI pipelines, developer tools, and cloud deployment. I build systems that connect large language models to real-world workflows, from data ingestion and preprocessing through to model serving and output integration.
I care about tools that are genuinely useful: fast, clear, and honest about what they do and do not know. isthiswebsiteavailable.com is an example of that, a straightforward utility that gives you accurate information without friction.