Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.
Look into all current and historical DNS / IP connections between domains and A, MX, NS, and other records. Monitor suspicious changes to DNS records.
Get detailed context on an IP address, including its user’s geolocation, time zone, connected domains, connection type, IP range, ASN, and other network ownership details.
Access our web-based solution to dig into and monitor all domain events of interest.
Get access to a web-based enterprise-grade solution to search and monitor domain registrations and ownership details for branded terms, fuzzy matches, registrants of interest, and more.
Predictive threat intelligence is your best first line of defense. Subscribe to the feeds to strengthen your cybersecurity posture. Contact us today for more information.
Unlock integrated intelligence on Internet properties and their ownership, infrastructure, and other attributes.
Our complete set of domain, IP, and DNS intelligence available via API calls as an annual subscription with predictable pricing.
Offers complete access to WHOIS, IP, DNS, and subdomain data for product enrichment, threat hunting and more.
Multi-Level API User Administration Now Available - Manage individual API keys for team members in your organization.
Learn MoreRegardless of whether you are a startup, a small business or a global one, our team is always ready to help you. Enterprises operating on a scale can also choose special premium support management with high priority 24/7 email and telephone responses and other professional services.
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WHOIS API provides customers with technical support services as an annual subscription in accordance with the support tiers as defined below.
Severity level 1
Severity level 2
Severity level 3
Severity level 4
Response time
Business hours*
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Support access
Response time
Business hours*
Business hours*
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Support access
Response time
Higher priority**
Higher priority**
Support access
Response time
Higher priority**
Higher priority**
Support access
* Whois API personnel will work on resolution during business hours, which are generally defined as 11:00 AM to 4:00 PM PST, excluding holidays and weekends.
** Whois API personnel shall work on it during normal business hours with heightened priority until resolution.
Whois API support staff will make commercially reasonable efforts to resolve material, reproducible bugs in the services provided, as reported by Customer (“Technical Support”). Reported bugs must be reproducible using the services as provided to Customer by Whois API. Customer must provide all support and information reasonably necessary for the bug’s reproduction, such as hardware and operating system information, and software logs. Customer may report such bugs to Whois API by e-mail and/or phone in accordance with the selected plan level.
Whois API shall have no obligation of any kind to provide assistance to Technical Support with regard to any problems in the operation or performance of services caused by any of the following customer-generated errors:
If it is necessary to provide Technical Support for a problem caused by a Customer-Generated Error, Whois API shall notify Customer of it as soon as Whois API is aware of suchCustomer-Generated Error, and WHOIS API shall have the right to invoice Customer at Whois API’s then-current time and materials rates for all such Technical Support performed,and Customer shall agree to settle this invoice.
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