Questions or comments about the service can be sent to the email address ipapi.is.info@gmail.com

ipapi.is was created to address an internal need for accurate and up-to-date IP address data. IP address data serves as the fundamental data source for numerous IT products and services. As such, it is crucial that this data is accurate and continuously updated. Some examples of how IP address data is utilized:

  • IP reputation: In online business, IP reputation plays a crucial role, particularly for consumer-oriented websites. Such websites generally prefer traffic from mobile and residential ISPs over traffic originating from data centers and proxy networks due to the reputation of IP addresses associated with such traffic. IPs associated with spam, malware, or other malicious activities are often linked to data centers, proxy networks or VPN networks.
  • Geolocation: The importance of geolocation has been increasing for service providers, who must now know the country or geographical region from which their visitors originate. This knowledge is crucial in targeting specific regions for advertising and restricting access to content based on geographical restrictions.
  • IT security: In the field of IT security, understanding the ownership of IP addresses associated with a particular company network or Autonomous System (AS) can be critical during an ongoing cyber attack. This information can help security personnel identify the scope and extent of the attack, which can then be addressed surgically with appropriate countermeasures.

Most existing services either have a very limited free plan or don't include ASN and WHOIS information in their basic plan. With ipapi.is, you have access to all API output regardless of the subscription plan you chose. The only difference is in the request volume.

Up to 1,000 daily API requests are free. If you have a larger API volume, please consider subscribing to a billing plan. Subscriptions are cancelable at any point in time.

API Strengths

Ipapi.is has several unique strengths:

  • IP Geolocation: By parsing WHOIS data and using Open Source Geolocation projects, a accurate and frequently updated geolocation database is compiled.
  • Accurate Hosting Detection: A proprietary hosting and datacenter detection algorithm uses WHOIS data to detect thousands of hosting and cloud providers around the globe.
  • WHOIS Data: WHOIS data is the primary data source for IP address data. Since not all possible use cases for IP address data are known, ipapi.is provides raw and updated WHOIS records for all active ASN's and IP networks.
  • IP to ASN: The API provides accurate and frequently updated ASN information for all autonomous systems. If the ASN is active (at least one route assigned to it), WHOIS information is returned on top of it.
  • IP to Organization: Each IP address is owned (or allocated) by a company or organization. Knowing which organization is responsible for a certain IP range helps to classify traffic originating from it in a better way.