Domain Availability Checker
Is the name free? Ask DNS and the official registries for many TLDs at once.
Check domain names
Results
“Available” means the registry has no record of the name (RDAP 404). Some names are reserved or sold at premium prices, so the registrar’s search shows the final word and price. Register links open the registrar’s own search; MySmartCoPilot has no affiliation with them.
About the Domain Availability Checker
Type a name once and see whether it is free under the TLDs you care about — .com, .net, .org, .in, .io, .ai, .dev, .app and more — or paste a list of up to 50 full domain names. Every name gets two checks: a DNS lookup that answers in a fraction of a second, then a question to the registry that runs the TLD, over RDAP. A registry answering “not found” (HTTP 404) is the strongest public evidence that a name is free; for taken names you see the expiry date and the registrar.
Names go from your browser straight to Cloudflare’s DNS resolver and to the registries — the official sources registrars use too. MySmartCoPilot does not store, log or share them, so a search here cannot tip anyone off to register the name first (“front-running”).
How to use it
- Pick One name, many TLDs and type the name you want (for example
myshop), or pick List of domains and paste up to 50 full names. - Tick the TLDs to check — Popular, All and None are shortcuts — and add others such as
.tvor.com.auunder More TLDs. - Press Check availability. Each name updates live: first the DNS hint, then the registry’s answer.
- For a free name, open a registrar’s search to see the price and register it. For a taken one, WHOIS details shows when it expires and who the registrar is.
- Use Copy available for a list of the free names, or CSV for the full results.
Examples
myshop-zz91 — .com .in .io .ai
myshop-zz91.com — Available myshop-zz91.in — Available myshop-zz91.io — Available myshop-zz91.ai — Available
Each “Available” is a 404 from that TLD’s registry — Verisign, NIXI and Identity Digital here.
google.com
google.com — Registered · expires 2028-09-14 · MarkMonitor Inc.
Taken names link to the WHOIS lookup for full details.
Common uses
- Choosing a name for a business, product or project and seeing every TLD at once.
- Checking a shortlist of brand names pasted from a spreadsheet.
- Finding out when a taken name expires, or whether it is already being deleted.
- Confirming a domain is still free just before you buy it at a registrar.
How the check works
- DNS hint: an NS query to Cloudflare’s DNS-over-HTTPS resolver. NXDOMAIN means nothing exists at or below that name (RFC 8020); nameservers mean it is delegated, so it is registered. DNS alone cannot prove a name is free: a registered name can have no nameservers.
- Registry answer: IANA’s bootstrap file (RFC 9224) names the RDAP server for each TLD. HTTP 404 means the name is not in the registry’s database (RFC 7480 §5.3); 200 means it is registered, with its status and expiry date.
- Disagreements — DNS has nameservers but the registry says not found — are flagged as Check with a registrar instead of guessed.
- TLDs without public RDAP, such as .co, get the DNS hint only and are labelled Probably available or Registered (DNS).
- Names no registry accepts are not looked up at all: public suffixes such as co.uk, and labels with hyphens in the 3rd and 4th positions such as ab--cd, which RFC 5890 reserves for internationalised (xn--) names. A registry answers “not found” for those, but they still cannot be bought.
“Available” is not a guarantee
RDAP does not show everything a registry knows. A name can be missing from the database and still be reserved, blocked or sold at a premium price, and some country-code TLDs have eligibility rules — .us, for example, requires a connection to the United States. The registrar’s search is the final word on whether you can buy a name and for how much.
Names that are being deleted
“Registered — being deleted” means the registry lists the name in its redemption period or pending delete stage: the owner let it expire. During redemption only the current owner can still restore it; once it is purged anyone can register it — often within seconds, by services that try to catch dropping names.
HTTPS-only TLDs
The whole .dev, .app and .page TLDs are on the HSTS preload list built into browsers, so sites on them only open over HTTPS. You will need a TLS certificate from day one — most hosts issue one automatically.
Limitations
- A registry “not found” cannot reveal reserved or premium names; the registrar’s search shows the real availability and price.
- TLDs without a public RDAP service (for example .co) are checked with DNS only, so a registered name without nameservers would look free there.
- Up to 50 names per run. Registries limit how many lookups they answer, so rows marked Unknown can be checked again a minute later.
- Prices are not shown: they differ between registrars, and MySmartCoPilot uses no registrar APIs or affiliate links.
- Names under registries that block browser requests (such as .de) are checked through MySmartCoPilot’s server, which allows a limited number of checks per hour.
Privacy
Names are sent from your browser to Cloudflare’s DNS-over-HTTPS resolver (cloudflare-dns.com), IANA and the registries’ RDAP servers, without cookies; those services see your IP address and the names, as they do for registrars’ own searches. Names under registries that do not accept browser requests (for example .de) are relayed through MySmartCoPilot’s server. MySmartCoPilot does not store, log or share the names you check, and the registrar links send a name to a registrar only when you click them.
Frequently asked questions
Is it safe to search for a domain name here?
MySmartCoPilot does not store, log or share your searches, and the lookups go to Cloudflare’s DNS resolver and to the registries themselves — the official sources. “Front-running” worries usually concern search boxes run by sellers; here, nothing reaches a registrar unless you click a registrar link.
What does “Check with a registrar” mean?
The registry’s RDAP service says the name is not registered, but DNS has nameservers for it. The registry’s RDAP data may be lagging, or the name was just registered. A registrar’s search will tell you for certain.
What does “Probably available” mean?
The TLD has no public RDAP service (for example .co), so only DNS could be checked and the name does not exist in DNS. That is a good sign, but a registered name without nameservers looks the same — confirm at a registrar.
The name I want is registered. Can I still get it?
Open WHOIS details to see the expiry date and status. You can contact the owner through the registrar’s contact form shown there, use a backorder service, or watch for the redemption and pending delete stages after it expires. Many owners renew automatically, so expiry alone does not mean it will become free.
Why can I check only 50 names at a time?
Each name costs a lookup at the registry, and registries limit how many they answer from one visitor. Fifty per run keeps the results reliable; run the tool again for more.
Why are prices not shown?
Prices differ between registrars, change with promotions and can be premium for some names. MySmartCoPilot does not use registrar APIs or affiliate deals, so it links to the registrar’s own search, where the price is shown before you buy.