Bulk Domain Lookup – Availability, Age, Registrar & Expiry (RDAP)

Check domain availability, registration date, domain age, registrar, expiry date, nameservers and DNSSEC for hundreds of domains in one run. Built as a fast bulk WHOIS / RDAP lookup and bulk domain availability checker for domain investors, SEO teams, brand-protection, lead enrichment and security research.

No login, no proxy, no API key. It uses RDAP, the official JSON replacement for WHOIS, and finds the right registry server for each TLD through the IANA RDAP bootstrap file, so data comes straight from the registry (Verisign, PIR and others).

What you get for every domain

• Available: true when the registry reports the domain as not registered.
• Registered / expires / last changed dates, age in days and years, days until expiry, expiringSoon (30 days) and expired flags.
• Registrar name and IANA registrar ID.
• Status codes (e.g. client transfer prohibited), nameservers, DNSSEC signed or not.

Use cases

• Find expiring or expired domains to backorder.
• Check hundreds of brand-name ideas for availability at once.
• Filter old domains (age in years) for SEO and link building.
• Enrich lead lists with registrar and domain age as a trust signal.
• Monitor your own portfolio for upcoming expiries on a schedule.

Input

Field	Description	Default
domains	Domains, URLs or emails (domain is extracted, subdomains are reduced to the registrable domain)	required
maxDomains	Cap per run (also caps cost)	1000
concurrency	Parallel lookups	5
includeRaw	Attach the raw RDAP JSON	false

{ "domains": ["google.com", "my-new-brand.com", "https://www.example.org/page"] }

Output (one item per domain)

{
  "domain": "github.com", "tld": "com", "available": false,
  "registeredAt": "2007-10-09T18:20:50Z", "expiresAt": "2028-10-09T18:20:50Z",
  "ageYears": 19, "daysUntilExpiry": 723, "expiringSoon": false, "expired": false,
  "registrar": "MarkMonitor Inc.", "registrarIanaId": "292",
  "nameservers": ["dns1.p08.nsone.net"], "dnssecSigned": false
}

Download as JSON, CSV or Excel, or call it via the Apify API.

Limits to know

• Some TLDs have no public RDAP (for example many country codes such as .io and .sa). Those domains are listed in the ERRORS record with the reason and are not charged.
• "Available" means the registry has no record. Premium or reserved names can still be unavailable to register.
• Registries rate-limit RDAP; the Actor retries and keeps concurrency low by default.

Pricing

Pay per event: you are charged per domain successfully looked up (one result each), plus a tiny start fee. Failed lookups are not charged.