All APIs Syndaq WHOIS

Intelligence API

Age and ownership signals for any domain.

Return registrar, creation/expiry dates, domain age in days, status flags, and nameservers—structured JSON over HTTPS for lead quality, abuse review, and investigations.

At a glance

  • 3 REST endpoints
  • JSON Request & response
  • HTTPS TLS required
  • Free tier available Starting price

Use cases

Where teams use Syndaq WHOIS

Lead quality

Down-rank brand-new domains during signup or affiliate onboarding.

Abuse review

Flag throwaway brand-lookalike domains created in the last few days.

KYC context

Attach registrar and age context to business domain claims.

Investigations

Pull nameservers and registration status for any domain in one call.

Integration

Up and running in three steps

1

Get an API key

Subscribe to a WHOIS plan and copy your wh_sec_ secret key.

2

Pass a domain

Call /v1/whois/lookup/{domain} or ?domain=.

3

Use registration signals

Apply domain_age_days, registrar, and status to your risk or scoring rules.

Example

Copy, paste, ship

Every response includes a request_id for support correlation. Rate limit and quota headers are returned on authenticated routes so you can backoff gracefully.

Authenticated with your Syndaq secret key over HTTPS. Field availability can vary by TLD.

Request
curl -s "https://api.syndaq.com/v1/whois/lookup/example.com" \
  -H "Authorization: Bearer wh_sec_YOUR_SECRET_KEY"
Response
{
  "success": true,
  "domain": "example.com",
  "cached": true,
  "registrar": "RESERVED-Internet Assigned Numbers Authority",
  "created_at": "1995-08-14T04:00:00Z",
  "expires_at": null,
  "domain_age_days": 11263,
  "nameservers": ["a.iana-servers.net", "b.iana-servers.net"],
  "request_id": "c3d4e5f6789012345678901234abcdef"
}

Reference

API endpoints

Included with your Syndaq WHOIS plan.

Method Path Description
GET /v1/whois/lookup Lookup domain registration data by ?domain= query parameter.
GET /v1/whois/lookup/{domain} Lookup domain registration data for a domain in the URL path.
GET /v1/whois/status Returns plan limits and quota for the authenticated key.

Pricing

Plans for every stage

Transparent limits. Upgrade when your traffic grows—no surprise overages without a plan change.

Starter

Free

Development and light production lookups.

  • 120 requests / minute
  • 10,000 lookups / month
  • Secret key authentication
  • WHOIS JSON REST API
  • Domain age, registrar & nameservers
  • Rate limit & quota headers
Get started

Enterprise

monthly
$99.00 USD

High-volume lookups with priority limits.

  • 3,000 requests / minute
  • Unlimited monthly lookups
  • Secret key authentication
  • WHOIS JSON REST API
  • Domain age, registrar & nameservers
  • Rate limit & quota headers
Get started

FAQ

Common questions

Send your wh_sec_ secret key as a Bearer token in the Authorization header on every request to https://api.syndaq.com.

Registrar, creation and expiry dates, domain age in days, status flags, and nameservers—ideal for scoring new or suspicious domains.

Yes. Plans include rate limits and monthly quotas so you can wire domain age and registrar signals into signup, KYC, and abuse workflows.

Ready to integrate Syndaq WHOIS?

Pick a plan, create your keys in the client area, and start calling the API in minutes.

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