WHOIS Lookup via a domain, email, or IP address | WhoisXML API

Use WHOIS Lookup to search for the owner of a domain name, IP address, or email account

A single lookup on our service allows you to gather all the information available from a domain’s or an IP address’s corresponding WHOIS records. Find the name, email address, and physical location of a registrant as well as the domain’s creation, expiration, and last update dates and registrar to assess its current or future availability and age.

Why use WHOIS Lookup?

  • Ample reach across TLDs

    WHOIS Lookup contains the records of about 440 million currently active domains spanning more than 2,864 generic (gTLDs) and country-code top-level domains (ccTLDs).

  • Readily available and easy to use

    WHOIS Lookup reports are parsed and normalized so professionals can easily access and make sense of the information they provide. Query results are available in seconds for faster decision-making.

  • Shareable results

    WHOIS Lookup’s domain search query results come with custom URLs that users can readily share with relevant parties with just a few clicks.

  • Fresh and accurate data

    We gather and refresh data in near-real-time so users can act on the most recent WHOIS insights on domain names and IP addresses of interest.

Practical usage

  • Search WHOIS records to detect cybercriminal activities

    Threat detection specialists, digital forensics & incident response (DFIR) teams, or even non-technical users can use WHOIS lookups to find out more about domain names, IPs, and email addresses. Suspicious hosts and their WHOIS records can be investigated further to reduce the risk of malware-driven and phishing-led attacks.

  • Make WHOIS lookups part of your MDR efforts

    WHOIS Lookup lets external cybersecurity consultants, including managed detection and response (MDR) firms quickly check for unknown domain names and IP addresses entering their clients’ networks. These may be used for spamming, spoofing, and other domain-related attacks. Service providers can also use the tool to update their blocklists with reliable WHOIS data.

  • Support law enforcement efforts

    Law enforcement agencies can rely on WHOIS Lookup to quickly check if a particular domain name’s registration details share patterns with known or emerging online criminal networks. WHOIS History can also give them a historical perspective on domain ownership.

  • Search for the right domain name investments

    Domain investors and brokers can use WHOIS Lookup to get an overview of a web domain’s availability and current ownership information.

  • Facilitate domain transfers

    Domain brokers and registrars can double-check a domain name’s latest details and verify ownership before finalizing a sale and proceeding with the domain transfer.

  • Anticipate product launches and entrepreneurial moves

    Conducting regular WHOIS domain and website searches can give business professionals an edge as new web name registrations may be indicative of competitors’ future product launches or international expansions.

  • Detect fraudulent payment requests

    Users can check the credibility of a person’s email address for telltale signs of spoofing and business email compromise (BEC) fraud, such as very recent registration, too frequent updates, or other anomalies.

  • Protect your brand with an adequate website and domain search

    Users can benefit from WHOIS Lookup’s outputs to investigate possible instances of brandjacking and typosquatting as well as prepare for Uniform Domain-Name Dispute Resolution Policy (UDRP) cases.

  • Start off new business relationships on the right foot

    Business professionals can use the information contained in WHOIS records to carry out background checks on new suppliers, customers, and partners before committing to contractual agreements or putting in large orders.

Bulk WHOIS Lookup can help you search domain names faster

Easily upload domain lists in a file or as text and execute WHOIS lookups in bulk for faster results.

Learn more about Bulk WHOIS Lookup
WHOIS Lookup | WhoisXML API

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Enterprise API Packages

Our WHOIS data is only a part of the intelligence we make available in API form. WhoisXML API offers annual subscriptions priced based on query volume, so you no longer have to worry about running out of credits to fulfill business requirements.

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