Find your perfect domain name instantly
Check domain availability, discover smart alternatives, and continue registration in seconds.
Built for a fast, confident domain hunt
From the first keystroke to checkout, every step is designed to feel instant and trustworthy.
Instant Domain Check
Type a name and get a clear yes or no in a heartbeat — no refreshes, no clutter.
Smart Name Suggestions
Taken? We generate readable, brandable alternatives that are actually available.
Same Extension Suggestions
Search a .com, get .com ideas. Your TLD stays consistent across every suggestion.
Fast Checkout Redirect
One tap sends you straight to registration with your domain already pre-filled.
Server-Side Lookup
Availability is checked on the server via RDAP — API keys never touch the browser.
Secure Input Validation
Every domain is sanitized, normalized, and validated before it is ever looked up.
Four steps to your domain
- 01
Enter your domain
Type any name and extension, like tokoku.com or brand.id.
- 02
Check availability
We validate, normalize, and look it up server-side in real time.
- 03
Choose a domain
Grab it if it's free, or pick a smart same-TLD alternative.
- 04
Continue to checkout
Head to registration with your domain already attached.
Questions, answered
What is CekDomain.ink?
CekDomain.ink is a modern domain availability checker. Type a domain, find out instantly if it's free or taken, and get brandable alternatives when it's already registered — all in one clean screen.
How does the domain checker work?
Your input is cleaned and validated, then sent to a server-side API route that checks availability using the RDAP protocol. RDAP is the standardized successor to WHOIS and needs no API keys, so nothing secret is ever exposed to the browser.
Are suggestions using the same extension?
Always. If you search a .com and it's taken, every suggestion is also a .com. Search a .id and you get .id ideas. The TLD you chose is respected across all suggestions, and available names are surfaced first.
What happens after I click checkout?
You're redirected to the registration page with your chosen domain passed along as a query parameter, so it's ready to complete without retyping.
Does availability guarantee ownership?
No. A domain is only yours once registration is fully completed and confirmed by the registrar at checkout. Availability is a strong signal, not a reservation.
Why can availability change?
Domains are registered by people all over the world every second. A name that reads as available now can be taken moments later, which is why we confirm the final state at checkout.
Your domain is one search away
Check availability, explore alternatives, and register in seconds.
Check a domain now