Onymu - Find and check domain name availability across 1,400 TLDs in milliseconds, no account required

Core Domain Search Features

Onymu runs availability checks across 1,400 top-level domains in milliseconds. Results update in real time as you type, no form submission needed.

• Type a bare domain name to check it against every supported TLD

• Type name.tld to prioritize that specific extension in results

• Enter up to 100 comma-separated names to compare all their availability statuses side by side

• All registry data is refreshed daily to keep availability information up to date

• Green status marks available names, grey status marks already registered names

• Filter results by availability status, and mark favorite TLDs to appear at the top of result grids when you are logged in

Built-in Domain Name Generator

The generator takes a single input word and outputs brandable, pre-checked candidate names. It applies deterministic naming patterns including prefixes, suffixes, word blends, synonyms, and short forms, so no user input is sent to an LLM. All generated candidates are already checked against popular TLDs, so you can skip redundant manual verification steps.

Additional Built-in Tools

Onymu includes several auxiliary pages to support domain selection without redirecting to third-party sites:

• Brand preview: Render any name as a sample App Store listing, Google search result, email sender, and popular social media profile

• Full TLD directory: View pricing, historical context, and common use cases for every supported extension

• Quick lookup links from every result: Direct access to WHOIS, DNS data, archive records, and domain appraisals

• All availability results link directly to third-party registrars for purchasing. Onymu does not sell domains or display registrar pricing on its own pages.

MCP Server for Claude Integration

The official MCP server gives any MCP-capable LLM assistant full access to Onymu's core tools inside a chat session. Supported operations include:

• Generate domain name candidates from a single input word

• Run bulk availability checks across all 1,400 TLDs

• Save domain names to a persistent shortlist that remains accessible after the chat ends The MCP server requires a registered user account to use, while all public browser-based search and generation features work with no account required. There are no paid tiers on the platform.

Usage Notes

A small number of names marked as available on Onymu may still be reserved or tagged as premium by individual registries. Always confirm final availability and pricing directly through the selected registrar before completing a purchase.