WHOIS Domain Lookup

ConvertICO WHOIS Lookup retrieves domain registration information, DNS records, SSL certificates, hosting details, and website status. Supports single and bulk lookups.

Enter Domain Name

Enter a domain without http:// or www

Looking up domain information...


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How to Use WHOIS Lookup

  1. Single Lookup: Enter a domain name (e.g., example.com) in the input field.
  2. Bulk Check: Switch to bulk mode and enter up to 5 domains, one per line.
  3. Click "Lookup Domain" to retrieve comprehensive information.
  4. View registration details, DNS records, SSL info, and hosting data.
  5. Export results as JSON or CSV for further analysis.

WHOIS Lookup Features

  • WHOIS/RDAP Data: Registration dates, registrar info, domain status, and age.
  • DNS Records: A, AAAA, MX, NS, TXT, CNAME, and SOA records.
  • SSL Certificate: Issuer, validity dates, and expiration status.
  • Website Status: HTTP response code, response time, and server info.
  • IP Geolocation: Server location, ISP, and ASN information.
  • Email Provider: Detect email hosting from MX records.
  • Technology Detection: Server software, CDN, and frameworks.
  • SEO Checks: robots.txt and sitemap.xml availability.

FAQ - WHOIS Domain Lookup

What is WHOIS? +

WHOIS is a protocol used to query databases that store information about registered domain names. It reveals the registrar, registration dates, nameservers, and sometimes owner contact information (when not privacy-protected).

What is RDAP? +

RDAP (Registration Data Access Protocol) is the modern replacement for WHOIS. It provides structured JSON responses, better internationalization support, and standardized access to domain registration data.

Why is registrant information hidden? +

Due to GDPR and other privacy regulations, most registrars now redact personal information in WHOIS records. Domain owners can also purchase privacy protection services to hide their contact details.

What DNS records are shown? +

We display A (IPv4), AAAA (IPv6), MX (mail), NS (nameservers), TXT, CNAME, and SOA records. These reveal how the domain's traffic is routed and what services are configured.

How accurate is the SSL information? +

SSL information is retrieved in real-time by connecting to the domain's server. It shows the current certificate issuer, validity period, and days until expiration.