Discover, generate, and check domains in seconds.
Free mass domain search and AI startup naming. Directly checks registries over RDAP without retail markup, bots, or front-running.
Tell the AI what you're building, your target audience, or relevant keywords.
💡 Candidate Names (0 generated)
Free Bulk Domain Search with AI — Check Multiple Domains at Once
OneDomain is a high-speed, free mass domain search tool and AI bulk domain name generator designed for founders, marketers, and developers looking to verify domain availability across 1,200+ extensions without retail markups or rate-limit blocks.
Bulk Domain Availability Checker
Need to verify 50 to 500 domain ideas? Paste your full list into our bulk domain search tool. Queries execute in parallel batches directly against central ICANN registries, giving you instantaneous certain vs. taken results with zero front-running.
AI Bulk Domain Name Generator
Describe your product, startup, or SaaS idea and our AI generator suggests 20+ catchy, brandable roots across your chosen extensions (.com, .ai, .io, .dev). You approve the best candidate pills, and the tool checks live availability instantly.
Check Multiple Domains at Once
Use the Keyword Matrix to take core brand concepts and cross-check them across up to 10 top-level domains simultaneously. Compare first-year registration vs. true annual renewal rates side-by-side to prevent unexpected renewal price jumps.
Frequently Asked Questions
What is a bulk domain search tool?
A bulk domain search tool allows users to check the availability of dozens or hundreds of domain names simultaneously rather than typing them one by one into registrar search boxes. OneDomain connects directly to registry RDAP endpoints, making lookups rapid and reliable.
How can I check multiple domains at once for free?
Simply navigate to the "Bulk Paste" tab, paste your list of domains (one per line or separated by commas), and click "Check All Domains". The browser queries registries in parallel batches of 10 without requiring any API keys or subscriptions.
Why do some domains show different registration and renewal prices?
Many registrars offer steep first-year discount promotions that increase significantly upon yearly renewal (for instance, $2 introductory vs. $15/year renewal). OneDomain surfaces both numbers upfront so you always understand the true multi-year cost of ownership.