Domain check

Is a company domain real? Whether it exists, receives email, is a throwaway provider, and when it was registered.

POST /v1/domain/check · 1 credit

Good for B2B signups ("is acme-corp.io a real company?"), lead qualification, and vetting a website before you trust it.

Request

Field	Type	Required	Description
`domain`	string	yes	A domain (`acme.com`), a URL (`https://www.acme.com/pricing`) or an email address. We extract the domain.

curl https://veqen-app.com/v1/domain/check \
  -H "Authorization: Bearer $VEQEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"domain": "https://www.example.com/about"}'

r = requests.post(
    "https://veqen-app.com/v1/domain/check",
    headers={"Authorization": f"Bearer {VEQEN_API_KEY}"},
    json={"domain": "example.com"},
    timeout=10,
)

const r = await fetch("https://veqen-app.com/v1/domain/check", {
  method: "POST",
  headers: { Authorization: `Bearer ${VEQEN_API_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({ domain: "example.com" }),
});

Response

{
  "input": "https://www.example.com/about",
  "valid": true,
  "domain": "example.com",
  "disposable": false,
  "free_provider": false,
  "exists": true,
  "accepts_mail": false,
  "mx": [],
  "null_mx": true,
  "spf": true,
  "dmarc": true,
  "registered_at": "1995-08-14",
  "age_days": 11390,
  "registrar": "RESERVED-Internet Assigned Numbers Authority",
  "risk": {
    "score": 60,
    "level": "medium",
    "verdict": "review",
    "reasons": [
      { "code": "domain_refuses_mail", "impact": 60, "message": "example.com accepts no email." }
    ]
  }
}

Fields

Field	What it tells you
`exists`	`false` when the domain isn't registered.
`accepts_mail`	The domain has somewhere to deliver email.
`null_mx`	The domain says it never accepts email (RFC 7505).
`spf`, `dmarc`	Email authentication records. Established businesses almost always publish them.
`registered_at`, `age_days`	From RDAP, the modern WHOIS. Some country registries don't publish it, so it can be `null`.
`disposable`, `free_provider`	Same meaning as in the email check.