Domain Availability Checker
ServerCheck if a domain name is registered or available.
How it works
Checks whether a domain is already registered. We query RDAP (with WHOIS as a fallback) — a "not found" means it's available to register.
This confirms availability; to actually buy it, use any domain registrar.
About the Domain Availability Checker
Before you buy a domain, you need to know if it's taken. This free domain availability checker tells you instantly whether a domain name is registered or available, using RDAP with a WHOIS fallback for an accurate answer.
No signup, no upsells.
How to check domain availability
- Enter the domain name you want.
- See whether it's registered or appears available.
- If registered, view registrar and expiry via WHOIS/RDAP.
If the domain you want is taken
- Try a different TLD — .io, .dev, .app or a country code.
- Add or change a word to keep it brandable.
- Check whether it's parked or genuinely in use (WHOIS/RDAP dates hint at this).
- Use a backorder service to try to catch it if it expires.
Frequently asked questions
How does the availability check work?
It queries RDAP (with a WHOIS fallback). If registration data exists, the domain is taken; if none is found, it's likely available to register.
Does 'available' guarantee I can buy it?
It's a strong indicator, but premium pricing, registry holds or reservations can still apply. Confirm at a registrar before purchase.
Which extensions can I check?
Most common TLDs are supported through their RDAP/WHOIS services. Some niche TLDs may return limited data.
Why do some available domains cost far more?
Registries mark certain names as "premium" and price them well above the standard rate. A domain can be unregistered yet still carry a premium price, so always confirm the actual cost at a registrar.