Search more than a domain
Type a company, an email, an IP address and much more. You get every domain registered to it, or seen answering to it historically.
| Searched | Found |
|---|---|
| spotify ab | niland.iosonantic.iospotifynewsroom.jp |
| domains@apple.com | thinkdifferent.usappsto.reicloud.com.cn |
| 76.76.21.21 | where.ski0x1c.dev0.new |
Every change, kept
When a registrar, owner or nameserver changes, the old value stays beside the new one with the date it changed.
| Field | Change |
|---|---|
roq.vlaanderenOctober 19, 2026 | |
| contact.owner.organization | willemen groep nv→ jan de nul dredging nv |
| registrar.name | ascio technologies inc, danmark→ combell nv |
roq.vlaanderenOctober 12, 2026 | |
| nameserver | ns1.cloud.telenet.be→ ns1.combell.eu |
Live DNS, subdomains included
Each lookup resolves A, AAAA, CNAME, MX and TXT live, checks DNSSEC, and probes common subdomains like mail and api.
| Type | Name | Value |
|---|---|---|
| A | snusbase.com | 104.21.83.13 |
| A | api.snusbase.com | 104.21.83.13 |
| MX | snusbase.com | 10 mail.protonmail.ch |
| TXT | snusbase.com | v=spf1 include:_spf.protonmail.ch mx ~all |
One name, every extension
Check a name against up to 450 extensions in one request. Results stream in as each registry answers.
| Domain | Status |
|---|---|
| quietharbor.com | taken |
| quietharbor.dev | taken |
| quietharbor.io | available |
| quietharbor.sh | available |
| quietharbor.ai | available |
Query the whole index
Filter 291 million domains on 58 fields, sort, and page with a cursor. Counts come back in about a second.
POST /v1/query
{
"resource": "domains",
"where": {
"nameserver": {
"$ew": "ns.cloudflare.com"
}
},
"sort": [
{
"field": "meta.updated",
"dir": "desc"
}
]
}41.5 million domains in 1.0s
A free API, no key needed
Single and bulk lookups, live DNS, availability and the query engine. No account, no key, no quota. This site uses the same API.
curl https://api.tld-api.com/v1/domains/example.com
{
"domain": "example.com",
"tld": "com",
"nameserver": [
"elliott.ns.cloudflare.com",
"hera.ns.cloudflare.com"
],
"dnssec": { "signed": true },
"meta": { "sources": ["czds", "rdap", "dns"] }
}