
Description: DNSchecker is a free open-source tool for checking the configuration of DNS servers and mail servers. It can validate records like MX, NS, SOA, SPF, and more across multiple DNS servers.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Nslookup is a network administration command-line tool for querying DNS servers to obtain domain name or IP address mapping or for troubleshooting DNS issues. It allows administrators to test and diagnose DNS problems and verify DNS configurations and records.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API