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This tutorial provides an in-depth explanation of how to use ipapi.is to protect your website or app from unwanted or malicious traffic. The article discusses the strengths and weaknesses of ipapi.is honestly and explains how to use the API most effectively from an IT security perspective.

This blog article explores whether using Reverse DNS lookups across the entire IPv4 address space can enrich IP API data. The idea is to utilize Reverse DNS data to enhance IP Geolocation accuracy and to determine the connection type of IP addresses.

WHOIS data is the most crucial data source for ipapi.is, as it allows the derivation of the organization that owns a specific IP address. Additionally, WHOIS records can be used to derive useful metadata such as domain names, email addresses, and geolocation intelligence.

In this blog post, we describe in depth how the IP ranges of a substantial part of the hosting providers on the Internet can be detected. Knowing whether an IP address belongs to a hosting provider or not helps in making better IT security decisions.