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Domain WHOIS, DNS & Availability API (RDAP)

Everything about a domain in one call: WHOIS via official RDAP registries, DNS records, SPF/DMARC email security score, HTTPS check and domain availability, single or bulk.

What you get

  • WHOIS: registrar, created, expiry, age, status, nameservers
  • DNS: A, AAAA, CNAME, MX, NS, TXT, SOA, CAA
  • Email security: provider, SPF, DMARC, 0-100 score
  • HTTPS: status, response time, HSTS, CDN
  • Availability: one domain or 20 per call
  • Accepts domains, URLs or email addresses

Use cases

  • Lead enrichment
  • Fraud and phishing checks
  • Domain expiry monitoring
  • Email deliverability audits
  • Brand-name generators

Quick start

Subscribe on either marketplace to get a key, then call the endpoint. The same API runs behind both.

API.market (curl)

curl "https://prod.api.market/api/v1/rasareka/domain-info/domain/v1/whois?domain=github.com" \
  -H "x-api-market-key: YOUR_API_MARKET_KEY"

RapidAPI (curl)

curl "https://domain-info-whois-dns-spf-dmarc-availability.p.rapidapi.com/v1/whois?domain=github.com" \
  -H "x-rapidapi-key: YOUR_RAPIDAPI_KEY" \
  -H "x-rapidapi-host: domain-info-whois-dns-spf-dmarc-availability.p.rapidapi.com"

JavaScript

const res = await fetch("https://prod.api.market/api/v1/rasareka/domain-info/domain/v1/whois?domain=github.com", {
  headers: { "x-api-market-key": process.env.API_MARKET_KEY },
});
console.log(await res.json());

Example response

{
  "domain": "github.com",
  "registered": true,
  "registrar": "MarkMonitor Inc.",
  "created": "2007-10-09T18:20:50Z",
  "age_days": 6968
}

Pricing

PlanAPI.market
Free trial100 calls
Pro$9.99 / month for 10,000
Pay as you go$0.003 per call

RapidAPI has its own free Basic plan and monthly tiers. See the listing for current prices.

FAQ

Why is WHOIS empty for some domains?

Some country-code TLDs (for example .de, .jp and .my) do not publish RDAP. DNS, email security and availability still work for them.

Who runs this API?

Rasa Reka Enterprise, a registered software studio in Malaysia. It runs on Cloudflare's global edge network. Questions: hello@rasareka.com.

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