DNS Inspector is a powerful utility application designed for iPhone users, enabling advanced DNS queries with ease. Users can input a query and a server address to receive results within seconds. The app remembers recent queries and the last used DNS server, facilitating quick access and efficiency. Additionally, it allows users to save a list of DNS servers for convenient retrieval.

The application supports a wide range of DNS servers, including traditional DNS over UDP and TCP, as well as secure options like DNS over TLS (DoT) and DNS over HTTPS (DoH). DNS Inspector also emphasizes data integrity with full DNSSEC support for message authentication and zone trust verification, making it suitable for power users. With a user-friendly interface, the app presents results clearly and concisely, all while being free and open-source, ensuring no ads or intrusive tracking.