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TLD Lookup

How to use TLD Lookup

  1. Type a domain extension (like .com, .io, or .dev) or search by keyword.
  2. See details about that top-level domain — registry, typical use, and general registration notes.

Limitations

  • This is a reference lookup, not a live domain availability checker — to see if a specific domain is registered, use a registrar's search or the Domain Age Checker.

About this tool

TLD Lookup is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.

Category: Developer Tools — Advanced. Browse more Developer Tools — Advanced tools.