With one API call get exhaustive information on the IP range that a given IP address belongs to, with detailed ownership information regarding each range.Get started
1,000 free API requests. No credit card required.
We provide exhaustive IP netblocks data gathered and parsed from RWHOIS servers and RIR WHOIS data feeds (Regional Internet Registries). We determine the company, organization, and network records from different sources and combine them into a single data entry. For more info about provided fields see our API docs.
Threat investigation and an essential component of any network security solution. Having IPs collected from your or your clients’ firewall logs, you can identify the networks where they have come from as well as their owners.
Trace malicious actors with contact & location details for the IP netblock.
By collecting IPs from your web server’s log and supplementing them with IP Netblocks whois data, you obtain a data set from which you can deduce the structure and dynamics of your traffic. Such information can have significant marketing implications, e.g. from which networks you are visited most frequently.
Having a network you can possibly be interested in extending, by purchasing neighboring netblocks or find other free blocks for purchase.
Provide access to your clients via network filtering (e.g. a software license or a journal subscription), you can identify their networks from netblocks data.
Monitor your brand’s trademark or copyright and notify you of infringement when they are used on fraudulent network.
Address various interesting scientific research problems based on the observation of the structure and dynamics of netblocks.
Enrich indicators of compromise (IoCs) within Threat Intelligence Platform, SIEMs with IP netblocks WHOIS data.
Map visitors’ IP addresses to organizations to gain insights and provide personalized experiences as part of customized advertising campaigns.
Check which repositories of IP addresses and their ranges have become available.
We provide daily updated database of the registered IP Netblocks (IP ranges) with detailed ownership information regarding each range in the unified and consistent JSON or CSV formats.Order database
“WhoisXML API builds out data sets that help users correlate attack infrastructure with related IP and WHOIS information.”
Our APIs are available in an enhanced version that offers better performance with a dedicated load balancer and a premium endpoint to enable faster throttling for large-scale API deployments.Learn more
API access through WhoisXMLAPI can be purchased as an annual subscription. The access pricing is based on the number of queries, which is measured monthly with per-minute rate limits. The pricing structure gives predictability to business planning and solution architecture.Learn more