domain report

Is example-unknown-xyz123.nl a business email?

Q: Is example-unknown-xyz123.nl a business email?

No — example-unknown-xyz123.nl: This domain can't receive email.

No. This domain can't receive email.

GET /v1/check?domain=example-unknown-xyz123.nlchecked 26 Oct 2026

isBusinessEmail("example-unknown-xyz123.nl")

false

This domain can't receive email.

category: invalid
recommendation: block
confidence: 99%

Google Workspace: not detected
Microsoft 365: not detected

reasons

invalid_domain

Mail setup

Receives mail: No
Mail provider: —
SPF: —
DMARC policy: None

Workspace

Google WorkspaceNot detected
Microsoft 365Not detected

Detected per company domain from public DNS and Microsoft's documented tenant discovery — never per person.

Why this verdict

invalid_domain

Confidence 99% · recommendation block under the default b2b policy.

Learn more

Check another address or domain

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via the API

Check example-unknown-xyz123.nl in your code

curl -X POST https://api.isbusinessemail.com/v1/check \
  -H "Authorization: Bearer $IBE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"domain": "example-unknown-xyz123.nl"}'

Get a free API key Read the docs

domain reputationFull reputation report for example-unknown-xyz123.nl →

Data as of 26 October 2026. Verdicts are probabilistic — keep a review path.