The domain desk · ten instruments, one rule
Ask the registry.
Then read all of it.
Any name on any ending, put to its own registry — RDAP where the ending has it, port-43 WHOIS where it does not — and the whole record set out below. Then the other instruments ask the rest of the world: its DNS, its mail, its certificates, its past, its look-alikes, its price.
Paste anything with a name in it — https://www.bbc.co.uk/news, ops@nic.io — and the registrable domain is found.
/ field B batch H history V instrument
What a report holds
Twelve panels, in this order, for every name that turns out to be registered. A name nobody has registered gets a different page: where to check it, and the ending's own facts.
Registration
Created, updated, expires; its age, the days left, and the whole lifecycle drawn to scale.
Registrar
Who sold it, their IANA number, their servers, and where abuse is reported.
Status
Every EPP code as a lit key, what each one stops, and whether the name is registry-locked.
Nameservers
The delegation, who runs it, the glue addresses, and whether DNS agrees with the registry.
Mail & security
Who takes the mail, and how SPF, DMARC, MTA-STS, TLS-RPT and DNSSEC defend it — graded.
Where it lives
Each address traced to its network: AS number, operator, prefix, country, registry.
Contacts
Registrant, admin, tech, billing and abuse, with redaction and privacy services flagged.
DNS
A, AAAA, CNAME, NS, MX, TXT, CAA, SOA, HTTPS, DS and DNSKEY, every row copyable.
The ending
What kind of TLD it is, who runs it, its servers and its IANA record.
Sources
Every server asked, in what role, how long it took, and what it said back.
Every field
Each line the registry and registrar published, in order, with a filter.
Raw
The untouched RDAP JSON and WHOIS text, registry, registrar and IANA.
Batch — paste, drop, or choose a file
Text, CSV, TSV, JSON, Markdown, HTML, logs or XML, up to 5 MB. The file never leaves this browser; only the names found in it are sent, one at a time.
Nothing yet. Names appear here as you type — de-duplicated, reduced to the registrable domain, with anything that is not a domain set aside and the reason given.
Up to 1,000 names a run. Ctrl+Enter runs, Esc stops.
Results
No names in this state.
History — kept in this browser
Nothing checked yet. Every single lookup lands here — the newest first, up to 300 — and stays in this browser's storage, nowhere else.
DC‑1000 Band scale · ten instruments
Nothing kept yet — what you keep stays in this browserNothing on your board yet. What you add stays in this browser.
The same on screen, three different names to a registry. The scanner tries these, swapped and missing letters, and other endings.
Your WHOIS history and the generator’s shortlist live here and nowhere else. Nothing was sent to show you this.
Four instruments that answer here
DC‑P1 · C1 · H1 Know a name
UDP 53 · 14 resolversI have a name in mind.
The desk above reads its registry record. These ask the rest of the world about the same name — whether the resolvers agree, what certificates say, what it used to be.
Every record type → Certificates → Its archive →
crt.sh and the Wayback Machine take ten to twenty-five seconds, so they answer on their own pages.
Asked only when you press the key — nothing is sent before.
Asked by this site’s server over UDP 53. Public resolvers are anycast: each answer is from the node our server reached.
DC‑W2 · W3 Keep your names
Kept in this browserI hold names.
Paste them — a list, a CSV, an invoice, any text with names in it. They go onto a board in this browser; the board dates each one and warns when a transfer lock is off.
Nothing added yet — the board is only written when you press a key.
Read by the same parser as the watchlist’s import. Only the names are sent — one lookup at a time, when the board checks them.
DC‑L1 · M1 Guard your brand & mail
SPF · DMARC · DKIM · MTA-STSI protect a brand and its mail.
Grade its email here — the policies that stop someone sending as you. Then scan for the names built to be mistaken for it.
Give it a brand’s domain and a look-alike of it is drawn here, without asking anyone.
Asked only when you press the key — nothing is sent before.
DNS read by this site’s server. STARTTLS is not tested: outbound port 25 is blocked on this host.
DC‑R1 · G1 Buy well
Porkbun · one registrarI am buying.
The first year is the advert; the renewal is the price. Ask what an ending costs every year after the first.
Asked only when you press the key — nothing is sent before.
One registrar’s public prices (Porkbun), list prices in US dollars, no promotions, no affiliate links. Ten years = first year + 9 × renewal.
The rules
One rule, ten instruments.
01
The registry, asked directly.
RDAP from IANA’s own bootstrap, port-43 WHOIS where an ending has no RDAP, DNS beside both. No redirector — the one this site used to rely on took 4.7, 13.0 and 31.7 seconds to answer — and no scraped forms.
02
Not registered is not for sale.
Registries hold names back — reserved, premium, blocked for brands — and those answer the same way. Not registered is the most any instrument here says; a registrar’s search has the last word.
03
Silence is “probably”, in amber.
No record and no nameservers is Probably unregistered — never green, because a parked, undelegated name looks exactly the same.
04
A failure is Unknown.
A timeout, a refusal, a slow crt.sh: Unknown, with a way to ask again. Nothing is cached as good news.
05
Every figure names its source.
CT logs show certificates issued, not hosts that exist. The Wayback Machine is partial. Porkbun is one registrar. Public resolvers are anycast. Lifecycle dates are estimates by a stated rule; country codes publish no timetable, so none is drawn.
06
What you keep stays here.
Watch lists, your WHOIS history and the shortlist live in this browser; only the names you ask about are sent. The WHOIS and the tools run on this host, which asks the registries, resolvers, crt.sh, the Wayback Machine and Porkbun for you and caches their answers so each is asked once. No accounts, no affiliate links.
10 · The generator — the original
Make some names.
3 modes · 5 sets of endings · 110 endings · works offline · nothing is sent until you ask
DC‑G1 Name generator
Ten neighbours: prefixed, suffixed, doubled, devowelled, numbered.
Every ending keeps the word and replaces the suffix, checking it across whichever set is selected below — three names on Classic, a hundred and ten on All.
One per line, or separated by commas. A word with no ending is read as
.com. Up to 100 at a time; anything over that is reported rather
than dropped. Ctrl+Enter checks the list.
Nothing generated yet.
Press Generate, or give the first field a word to work from. Names appear here; each row has a lookup, a star and a copy.
What the five answers mean
- Not registered — the registry for a contracted gTLD holds no record, so nobody holds the name. Registries also keep names back — reserved, blocked for brand owners, premium — that answer the same way, so a registrar’s search has the last word.
- Registered — there is a record, and it is shown: registrar, dates, nameservers. Or there is no readable record but the name is delegated, which settles it just as well.
- Probably unregistered — the ending publishes no registration data, and the name has no nameservers. Both signals point one way; neither is a guarantee.
- No RDAP — the ending published nothing and DNS was inconclusive too.
- Unknown — the request timed out, was refused, or the registry errored. Worth retrying.
The whole page works offline except the lookups, and no name you generate leaves the browser unless you ask for one to be checked.
A social handle cannot be checked from a browser: every platform refuses the request. The social links open the profile address; a 404 there means no profile at that address, and the platform’s own sign-up has the last word.
The five sets of endings
A set is only a pool the generator draws its ending from. What matters to the lookup is which kind of ending a name lands on — a contracted gTLD answers, and a country code may not.
Where to register — six, no affiliate links
When a name comes back not registered, its row offers Spaceship, Porkbun, Namecheap, GoDaddy, IONOS and Hostinger, each opening its own search for that exact name — the plain search URLs, with no affiliate parameters.